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Siemens Energy & Automation, Inc.Industrial Controls Catalog
Siemens / Industrial Controls Previous folio: 9/3
Position switches, molded plastic enclosure
Position switches, metal enclosure
Position switches, open type
Switch width 31 mm acc. to EN 50 047, switch width 40 mm acc. to EN 50 041 special width 50 mm
Switch width 40 mm acc. to EN 50041, special width 56 mm
2 or 3 contacts, switch width 30 mm
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Selection and ordering data13/71,13/82 Selection and ordering data 13/87 Selection and ordering data 13/99• Actuator heads 13/75, 13/83 • Actuator heads 13/95, 13/96• Accessories, spare parts 13/98 • Accessories, spare parts 13/98
99/31noitpircseD58/31noitpircseD96/31noitpircseDTechnical data 13/70 Technical data 13/86 Technical data 13/86Operation & travel 13/76, 13/84 Operation, travel 13/100 Operation & travel 13/99, 13/112Dimension drawings 13/81, 13/84 Dimension drawings 13/113 Dimension drawings 13/114
Position switches, metal enclosure, with molded cable
North American limit switches, modular, pre-wired, metal housing
North American enclosed limit switches
Compact switch, switch widths 30 and 40 mm
Switch width 39 mm
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Selection and ordering data 13/115 Selection and ordering data 13/119 Selection and ordering data 13/12913/130
• Actuator heads 13/122• Accessories, spare parts 13/122
Why do you want to use machine safety products?Are you a global supplier?Are you aware of the Machinery Directive? The Machinery Directive was implemented in 1993 in the European market to harmonize the national standards and regulations of all of the European Communities. The definition of a machine according to the Machinery Di-rective is:"Machinery also means an assembly of ma-chines which, in order to achieve the same end, are arranged and controlled so that they function as an integral whole."Basically, the Machinery Directive defines the objectives of machine design in terms of the basic health and safety requirements mandatory for the safety of new machines so that they may be sold within the European Union. The manufacturer of a machine must prove that the basic requirements are ful-filled. The CE mark is the only marking which certifies that the industrial product conforms to the EU machinery directive. (See Figure 1.)
The key requirements of the EU are:• A file must be established containing the
technical construction of the machine.• The machinery’s compliance must be
certified with the technical requirements.• An instruction manual must be provided
with each machine.To obtain the requirements for the CE mark, the Machinery Directive describes the steps for the machine builder.Siemens’ SIRIUS safety devices have been specifically designed to meet and exceed the stringent safety requirements mandated by the European Machinery Directive 98/37/EC for machine safety.(For further explanation of the Machinery Di-rective and Standards, reference the SIE-MENS Safety Integrated Application Manual).The European Standards of CENa for the safety of machines are hierarchically struc-tured as follows:
What are the main CE-Standards according to Machine Safety?• Type A Standards: Fundamental safety
standards giving basic terminology and general design principles that can be applied to all machines.
• Type B Standards: Group safety standards dealing with one aspect or one type of safety related device that can be used across a wide range of machinery. Type B Standards are divided into higher level aspects (B1-Standards) and safety devices (B2-Standards).
• Type C Standards: Requirements regarding to a specific group of machinery
Type C Standards often include require-ments which, under certain circumstances, deviate from the Basic- and Group Standards. For the ma-chine OEM, type C Standards have the high-est priority.
Declaration of conformity / CE-Mark
Meetharmonized
EN-Standards?
Annex IV98/37/EC
Self-operative machine to in
optional
Verification(by notified body)
or certification
Certification
Mfr . documentation (self - certification )
acc . to Annex V
yesno
yesno
referred
CEN: European Committee for Standardization
Figure 1: Evaluation Process for Obtaining the CE Mark
The need for machine safety products in totalintegrated automation
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Type A standardsEN 292 Basic principles, general design principlesEN 1050 Risk assessmentEN 414 Rules for elaboration and presentation of safety standards
Type C standards
Type B1 standards Type B2 standards
EN 60204 Machines-electrical equipmentEN 954 Safety related parts of control systemsEN 294 Safety distances to prevent upper limbs from
reaching danger zonespr EN 811 Safety distances to prevent lower limbs from
reaching danger zonespr EN 999 Hand/arm speed – approach speeds of parts of
the human body for positioning protective de-vices
IEC/pr EN 61496-2 Electrosensitive protective equipment-active optoelectronic area protective devices
EN 1760 Pressure-sensitive protective devicesEN 1088 Locking and interlocking devicesEN 418 Emergency stopping equipmentEN 574 Two-hand controlsIEC/EN 60947-5-1 Electromechanical control circuit devices
Cold working of metalspr EN 692 Mechanical pressespr En 693 Hydraulic pressesMachines for plastic and rubberpr EN 201 Injection presses, injection moulding machinespr EN 289 Compression and transfer pressespr EN 1114 Extrusion machines and extrusion linespr EN 1417 Two-cylinder mixerspr EN 422 Mould blowing machinesPackaging machinespr EN 415-2 Machines for pre-formed rigid packagingpr EN 415-3 Form, fill and seal machinespr EN 415-4 Palletizers, depalletizerspr EN 415-5 Wrapping machinespr EN 415-6 Machines to form collective packagingpr EN 415-7 Machines to ensure cohesion of load unitsGraphic and paper machinespr EN 1010 Graphic machinespr EN 1034 Paper machines
Machines for woodpr EN 691 Common requirementspr EN 859 Surfacing machines with manual feedpr EN 860 One-side planing machinespr EN 861 Surfacing and planing combined ma-
chinespr EN 1807 Bandsawspr EN 848 Milling machines with spindlepr En 940 Combined machinespr EN 1218 Tenoning machinesTanning machinespr EN 972 Reciprocating machine with rollerpr EN 1035 Machines with mobile tablespr EN 930 Carding, sandpapering, polishing and
milling machinespr EN 931 Assembling, folding, nailing machinesMiscellaneouspr EN 11553 Safety of laser machines for treatment of
slairetam EN 775 Safety of manipulating robotspr EN 1525 Industrial trucks without drivers and their
systems
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The need for machine safety products in totalintegrated automation
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Are your customers requiring safety de-signs for their machines?Have you been asked or required to imple-ment safety in the design of new machines? With an increased concern for personnel safety and required legal standards, incor-porating safety has become a priority in the US market.There are many organizations that affect safety in the US. Two such bodies oversee-ing the "control reliability" of machinery in the United States are the American National Standards Institute (ANSI) and the Occupa-tional Safety and Health Administration (OSHA). ANSI is an association of industry representatives who, working together, de-velop safety and technical standards. OSHA is a government agency responsible for monitoring and regulating workplace safety. ANSI and OSHA have provided the following definitions for control reliability:"Control reliability" means that when a com-ponent, module, device or system failure oc-curs, such that it or a subsequent failure of another component, module, device or sys-tem would lead to the inability of the safety-related function(s) to respond to a normal stop command or an immediate stop com-mand, the safety-related function shall:• Prevent initiation of hazardous machine
motion (or situation) until the failure is corrected or until the control system is manually reset; or,
• Initiate an immediate stop command and prevent re-initiation of hazardous machine motion (or situation) until the failure is corrected or until the control system is manually reset; or,
• Prevent re-initiation of hazardous machine motion (or situation) at the next normal stop command until the failure is corrected or until the control system is manually reset. (ANSI B11.19 -- 2003, 6.1)
"The control system shall be constructed so that a failure within the system does not pre-vent the normal stopping action from being applied to the press when required but does prevent initiation of a successive stroke until the failure is corrected. The failure shall be detectable by a simple test, or indicated by a control system." (OSHA 29 CFR 1910.217)OSHA regulations and definitions for ma-chine safety can be found in OSHA 1910. ANSI standards for machine safety can be found in ANSI B11 series.
Where is safety used today?• Automotive Industry• Pulp, Paper, and Paperboard Mills• Packaging and Wrapping Industry• Machine Tooling• Molding and Power Presses• Robotic Work Cells• Automated Production Equipment• Pipe, Tube and Shape Bending Machines• Gear Cutting Machines• Metal Sawing Machines• Assembly Lines
Most common applications for safeguard-ing machines:• Emergency-STOP Circuit• Protected Doors or Gates• Sliding Edges• Access Protection• Perimeter Protection• Two-Hand Control
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The need for machine safety products in totalintegrated automation
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Is increased safety for your personnel and equipment a priority?
As a result of their general design and functionality, machine and plants represent potential risks. Risk assessment is a sequence of steps which allows hazards caused by machines to be systematically investigated. Risk is a function of the severity of possible harm for the considered hazard and the probability of occurrence of that harm. The following Standards may be applied to assess risks:
EN 292 "Safety of machinery – Basic concepts, general principles for design." This standard mainly handles the risks to be evaluated and design principle to reduce risks.
EN 1050 "Safety of machinery – Principle for risk assessment." This standard basically handles the iterative process with risk assessment and risk reduction to achieve safety.
EN 954 "Safety related parts of control systems." This standard provides the safety requirements and guidance for the design of the safety related parts of control systems. It gives guidance on the specification, design process and validation including the selection of categories as reference points.
After following the risk assessment process (see Figure 2), a risk category or level of risk can be assigned. The requirements of the safety related parts of the control system are then determined from the risk category. Risk Assessment in America for machine tools is covered by the ANSI B11 TR3 part of the ANSI B11 series of technical reports and standards pertaining to the design, construction, care and use of machine tools. The ANSI B11 TR3 report defines a method of conducting a risk assessment and risk reduction for machine tools, provides some guidance in the selection of appropriate protective measures (safeguarding) to achieve tolerable risk, and describes the risk assessment and risk reduction responsibilities of both the machine tool supplier and user.
Risk Assessment in America for robotic applications is covered by the ANSI / RIA 15.06.
(Please refer to the SIEMENS Safety Integrated Application Handbook for furtherinformation regarding Risk Assessment).
S - Severity of the injury
F - Frequency and /or exposure timeto the hazardous condition
Many components make up a safety system. A safety device may consist of a sensor or switch, which initiates the "safety condition." Switches or sensors used in safety circuits are control devices with high reliability. They interrupt the control circuit of the machine in order to create a safe condiiton.
Devices with "direct opening action" contacts are specified in circuits where the safety of machine operators and equipment depend on the opening of one or more contacts when actuated in safety situations. Devices meeting these requirements are marked with the symbol shown below and must be installed in circuits protected by a short-circuit protective device specified by the manufacturer. This will avoid welding of the contact in case of a fault condition.
Devices with "direct opening action" contacts:• Emergency-Stop Pushbuttons• Limit Switches, All Types • Rope-Pull Switches• Foot Switches
The term, positive opening operation, was previously used in the IEC and EN standard, but is now replaced by the term "direct opening action."
Redundancy is incorporated in the safety circuit to ensure safety functionality even if a failure disables one channel.
A safety relay unit performs fault detection and evaluation. It opens the circuit when it detects a failure. The feedback loop monitors the correct operation of the output device. In some safety circuits, a start sensor or switch is incorporated to reactivate the safety circuit. See example of the functionality of a safety circuit below. (See Figure 3.)
The overall safety category depends on the components used in the safety circuit as well as on the wiring and installation. Beside the relay units, sensors and contactors also may affect the overall safety category required for the whole circuit.
"Positive opening action" or "mechanical linked contacts" are requirements which are essential for machine safety products. Command devices as well as our SIRIUS contactors meet these requirements and can be used in any safety circuit up to Cat.4, acc. to EN954-1.
For correct wiring examples and usage of the components please refer to the wiring examples and the proper product instruction sheet.
Symbol for Direct Opening Action:
Figure 3: Principle of a Safety Circuit
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The need for machine safety products in totalintegrated automation
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
What is a “Category” and which impact does it have on the circuitry?
“Category” acc. to EN954-1 is a terminology very often used to express the requirements for a particular safety level. EN954-1 divides the safety levels into 5 Categories (B, 1, 2, 3 and 4) with B being the lowest and 4 the highest level.
All parts and devices, from the origin of the command ultimately down to the lockout or stop of the machine, have to at least meet the requirements of the selected Category.
With the increase of the Category, the degree of the failure detection rises. That entails additional effort in product functionality as well as in wiring.
The following table should give a brief overview of the requirements of each Category:
For safety circuits from Category 3 and higher, EN954-1 requires a redundant structure to avoid the loss of the safety function in case of a failure. This requirement of single fault detection does not mean that all faults will be detected. The accumulation of undetected faults still may lead to an unintended output signal. For Category 4 any single fault should be detected and will not lead to the loss of the safety function.
To meet the requirements acc. to EN954-1 redundancy shall affect every component of the safety circuit. • Two contactors or even two interlocking
switches, wired in series, should be used and connected to the safety relay unit.
• For Category 4 in addition one NC auxiliary contact from each of the two contactors should be integrated in the feedback loop. Without both of these NC contacts wired in series in the feedback loop, the safety circuit is reduced to a maximum Category 3 level.
• The two NC safety contacts for a Emergency-STOP pushbutton should be seperated within two contact blocks
• If manual restart is used the device should be monitored from the safety relay unit.
B
1
2
3
4K2
on K1K2K1
3TK283SB3
onK1
K1
3TK283SB3
onK2K1
3TK28
+-
3SB3
K13TK28
3SB3
M
M
M
M
M
K13SB3Possibility of loss of safety function after a
single fault
Possibility of loss ofsafety function after a
single fault
Possibility of loss of safety function if a fault
appears between 2 test circle
Safety functionmaintained in case of a
single fault.
Safety functionmaintained in case of
multiple faults
Equipment designedaccording to basic principlesintended to ensure reliability
Design based on wellestablished components and
principles
The integrity of the safety function is based upon a periodic
test. A failure should be detected at the following test circle
Accumulation of undetected and non-dangerous faults
may lead to the loss of the safety function
Same as Category 3, but accumulation of undetected faults never leads to the loss
of the safety function
Conventionalrelays
Safety relays;mechanically linked
contacts (direct topening; reliabilbility)
Safety relays;cyclical test
Safety relays;redundancy (dual
channel)
Safety relays;redundancy;
feedback loop;cross fault detection
CategoriesEN 954-1
Consequencesof faults
Requirements of thecontrol system
Circuitry examples (not contractual)
Techniques forcircuitry examples
Table 1: Categories Acc. to EN954-1
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The need for machine safety products in totalintegrated automation
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
What is the advantage in using SIRIUS in the complete safety application?
Machine Safety, not only because of the existing regulations, is a need in today’s world of total automation. Very often, Machine Safety is considered a separate application serviced only by specially trained personnel with detailed knowledge.
Siemens, as a worldwide solution provider, offers a complete range of standard control products. Safety Integrated, Machine Safety will be integrated within the standard automation process. Siemens strengths include:• Worldwide Certifications• Complete Product Lines• Global Support and Service• Technical Leadership• International Experience
Within our Siemens Safety Integrated product range we will provide the link between standard automation and machine safety.
When setting up a machine design, the potential risk should be determined and reduced to a tolerable level. The particular risk level, called "Category" in the EN954-1 Standard, always refers to the whole safety circuitry of the special part of the machine.
This includes safety related Sensors, Command Devices, Evaluation Units and Contactors. One single product can not meet the intended safety level and does not solve the problem.
Only the combination of correct risk determination, mechanical protection equipment, failsafe evaluation, correct wiring and reliable devices will provide the required solution. (See Figure 4.)
Safety Integrated products encompass:• a wide variety of applications• all levels of machine safety• latest requirements in standardization• electromechanical and optical sensors• complete line of safety relays• wiring and application examples• contactors and circuit breakers designed
for machine safety • applications
and will help your company shape a safer, more productive workplace by integrating machine safety into standard automation processes.
Figure 4: Complete Safety Circuit
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General Information
Safety Systems—Safety Integrated
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Access Time: The time taken to access the hazardous machine parts after the initiation of the stop command by the interlocking device, as calculated on the basis of an approach speed chosen for each particular case, taking into account the parameters listed in prEN999, Safety of machinery—The positioning of protective equipment with respect to approach speeds of parts of the human body.
Signaling Output: A non–safety related contact closure or semiconductor output primarily used for signaling component or system status to a PLC, audible alarm or visual indicator (such as a stack light). Also called an "auxiliary contact" or "auxiliary monitoring contact".
ANSI (American National Standards Institute): An association of industry representatives who, working together, develop safety and other technical standards.
BG (Berufgenossenschaft): An independent German insurance agency whose legislative arm recommends industry safety practices. One of many "notified bodies" authorized to certify that safety products comply with all relevant standards.
Category: A classification of the safety related parts of a control system with respect to its resistance to faults and its subsequent behavior in the fault condition, and which is achieved by the structural arrangement of the parts and/or by their reliability.
CE (Conformite Europeene) mark: A symbol (CE) applied to finished products and machinery indicating it meets all applicable European Directives. For electrical and electronic "finished products", such as a safety relay module, these include the Low Voltage Directive and, where relevant, the ElectromagneticCompatibility (EMC) Directive.
Coded-Safety Magnet Sensor: A two-piece position sensor consisting of an array of reed switches and a multiple magnet array-actuating element. Such devices will only deliver an output signal when the reed switch element is in the presence of a matched, multiple-magnetic field array. Coded- magnet sensors cannot be actuated using a simple magnet. Hence they are far more difficult to defeat/bypass than a simple magnetic switch or proximity sensor.
Control Reliability: The capability of the machine control system, the safeguarding, other control components and related interfacing to achieve a safe state in the event of a failure within their safety related functions.
Declaration of Conformity: A manufacturer's self-certified document, signed by a highly positioned technical manager, which lists all the Standards and Directives to which a product conforms. A Declaration of Conformity is mandatory for all CE-marked products, and for machine components which, if they fail, could lead to a dangerous or hazardous situation on a machine.
Dual-Channel Safety System: A safety control system characterized by two inputs—each connected to one of two independent safety circuits. Dual-channel systems are typically capable of detecting interconnection wiring faults such as open circuits, short-circuits and ground faults. As such they provide a higher level of safety than single-channel systems (see "Redundancy").
European Machinery Directive (EMD) 98/37/EC: A set of machine safety design requirements that must be satisfied to meet the Essential Health and Safety standards established by the European Economic Community. This Directive and other relevant European Directives (such as the Low Voltage Directive, EMC Directive, et al) must be satisfied for the machine to bear the CE mark.
Hazardous Area: An area of a machine or process that presents a potential hazard to personnel.
Monitoring: The checking of system components to detect a failure of a component, subassembly or module that affects the performance of the safety-related functions.
Muting: A temporary automatic suspension of a safety function by safety related parts of the control system.
Notified Body: An independent testing laboratory that a member state has determined to be qualified to perform testing and certification functions relating to specified EU Directives.
OSHA (Occupational Safety Health Administration): A U.S. Department of Labor Federal agency responsible for monitoring and regulating workplace safety. OSHA enforcement may reference their own regulations, as well as those of other industry standards-making groups (e.g. ANSI, NFPA, UL, et al).
Direct Opening Contacts:Normally closed (NC) contacts which, upon actuation, are forced to open by a non-resilient mechanical drive mechanism. Also called "positive-opening" contacts.
Positively-Driven Contacts:Normally open (NO) and normally closed (NC) contacts which operate interdependently such that the NO and NC contacts can never be closed at the same time. They are designed such that if one of the contact welds/sticks closed, the other contacts cannot change state. The interdepen-dent operation between NO and NC contacts permits self-checking/ monitoring of the functioning of relays and contactors featuring positive-guided contacts. Hence they are desirable in machine safety circuits where "fail-to-safe" or "control reliability" is desired. Also called "Mechanically Linked" contacts.
Redundancy: The use of multiple means to perform the same function.
Safety Interlock Switch: A switch designed expressly to safely monitor the position of a machine barrier guard. Such switches typically feature positive-break contacts and are designed to be more tamper-resistant than conventional position/presence-sensing switches.
Safety Related Function(s):That portion of the control system or safeguarding device that either eliminates exposure to a hazardous situation or reduces exposure to a hazard or hazard-ous situation to a tolerable level.
Single-Channel Safety System: A safety control system characterized by one safety interlock switch whose normally-closed contact is the sole input to a safety relay module or controlling a motor contactor. Such systems are unable to detect a short circuit failure in the interconnection wiring and are only recommended for addressing Safety Categories B, 1 and 2 (see "Risk Assessment").
Tamper-Resistant: A term applied to safety interlock switches referring to their relative ability to be defeated or bypassed using simple, readily available means such as a screwdriver, paper clip, piece of tape or wire, etc. Switches and sensors designed expressly for use as machine guard safety interlocks are designed to be more "tamper-resistant" than conventional switches/sensors (e.g. proximity switches, reed switches, conventional limit switches).
Two-hand Control Device: An actuating control that requires the concurrent use of the operator’s hands to initiate or control machine motion during the hazardous portion of the machine cycle.
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Reference for additional information on machine safety:
Classification of a machine in categories acc. to EN 954-1European machinery directive 98/37/EG stipulates that every machine must comply with the applicable guidelines and stan-dards. Measures must be taken to keep the risk to persons below acceptable limits.
In the first step taken, a risk anal-ysis is conducted by the project engineer in accordance with EN 1050. For example,the ambi-ent conditions of the machine have to be considered. Then any overall risk must be evaluated. Risk evaluation must be per-formed in such a manner that the procedure and conclusions can be retraced. The dangers and
possible technical measures for reducing risk must also be spec-ified.Once the extent of the risks has been determined, the category according to which the safety circuits will be designed and im-plemented is specified with the aid of EN 954-1, "Safety-related parts of control systems".
This category defines the techni-cal requirements for the configu-ration of the safety equipment. There are five categories (B, 1, 2, 3 and 4), B (standing for basic category) being the category with the lowest risk and the one which also defines the minimum demands made on the control system.
Possible selection of the categories according to EN 954-1
Selection of the category
B, 1 to 4: Categories for parts of controllers with relevance for safety
Preferred categories for refer-ence points
Possible categories, which demand additional measuresMeasures that may be exces-sive with respect to the partic-ular risk
Summary of the requirements for categories acc. to EN 954-1
Starting point for risk assessment of the safety-related part of the control
S Severity of the injury F Frequency and/or duration of the exposure to danger
P Ability to avert the danger
S1 Minor (usually reversible) injury
F1 From rarely to often and/or short duration of exposure
P1 Possible under certain conditions
S2 Serious (normally irreversible) injury including death
F2 From frequently to constantly and/or long duration of exposure
P2 Hardly possible
Category 1) Summary of requirements System response 2) Principles for achieving safety
B The parts of controllers with relevance for safety and/or their protective devices as well as their components must be designed, constructed, selected, assembled and combined in accordance with the applicable standards in such a way that they can resist the expected external influences.
The occurrence of a fault can result in loss of the safety function.
Mainly characterised by the selection of components.
1 The requirements of B must be met.
Well-proven components and well-proven safety principles must be implemented.
The occurrence of a fault can result in loss of the safety function but the probability of it occurring is less than for Category B.
2 The requirements of B must be met and well-proven safety principles must be implemented.
The safety functions must be tested at regular intervals by the machine controller.
• The occurrence of a fault can result in loss of the safety function between tests.
• The loss of the safety function will be detected by the test.
Mainly characterised by the structure.
3 The requirements of B must be met and well-proven safety principles must be implemented.
Parts with relevance for safety must be implemented such that:
• A single fault in any of these components does not result in loss of the safety function.
• Whenever reasonably possible, the individual fault is detected.
• When the single fault occurs, the safety function is always maintained.
• Some but not all faults are detected.
• An accumulation of undetected faults may lead to loss of the safety function.
4 The requirements of B must be met and well-proven safety principles must be implemented.
Parts with relevance for safety must be implemented such that:
• A single fault in any of these components does not result in loss of the safety function.
• The individual fault is detected during or before the next activation of the safety function or, if this is not possible, an accumulation of faults will not result in loss of the safety function.
• When faults occur, the safety function is always maintained.
• The faults are detected early to prevent loss of the safety function.
1) The categories are not intended to be applied in a specific sequence or hi-erarchy with reference to the safety requirements.
2) The risk assessment will establish whether complete or partial loss of the safety function(s) due to faults is acceptable.
3TK28 safety relays
Safety Systems—Safety IntegratedSafety Relays
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Standards for "Safety of ma-chines"• NFPA 79 "Electrical Standard
for Industrial Machinery"• ANSI B11.19 "Performance
Criteria for Safeguarding Machine Tools"
• ANSI B11 TR3 "Risk Assessment and Risk Reduction Associated with Machine Tools"
• EN 60204-1 "Electrical equipment of industrial machines"
• EN 418 "EMERGENCY-STOP equipment, functional aspects, basic design principals"
• EN 574 "Two-hand switching"• EN 954-1 "Safety-related parts
of controls"• EN 1050 "Guidelines for risk
assessment"• EN 1088 "Locking facilities in
combination with isolating protective devices"
• IEC 61508 "Functional safety of electrical/programmable solid-state safety related systems"
Stop categories
Potential dangers posed by a machine must be eliminated as quickly as possible.
As a rule, the "danger-free sta-tus" with respect to hazardous motions is standstill. All 3TK28 Safety Relays are de-energized in the event of danger or a fault, i. e. the machine drives are switched to standstill. The EN 60204 standard requires that every machine must be equipped with the Stop function of Category 0. Stop functions of Categories 1 and/or 2 must be implemented when this is neces-sary for the safety and/or func-tional requirements of the ma-chine.
There are 3 categories of Stop functions:• STOP Category 0:
Shutdown by immediate switch-off of the energy infeed to the machine drives.
• STOP Category 1: Controlled shutdown, whereby the energy infeed to the ma-chine drives is maintained dur-ing shutdown and is only switched off when standstill has been achieved.
• STOP Category 2: Controlled shutdown, whereby the energy infeed to the ma-chine drives is maintained.
The devices support autostart or monitored start depending on their versions.
Autostart
The device is active when the sensor circuit is closed. If the ON button is connected in the return circuit, this will not be monitored for crossover. Crossover moni-toring is not required by EN 954-1 for Categories B, 1, 2 and 3.
If an autostart device is used for Category 4 and EMERGENCY-STOP, the user must ensure that faults are prevented (e. g. by safe routing of the ON button lead) in the ON button circuit.
Monitored start
A safety relay is activated follow-ing power supply failure or safety-related shutdown by pressing the ON button.
For Category 4 in accordance with EN 954-1 it is necessary that the ON/feedback circuit is monitored for crossover.
The ON button must be operated after connecting the sensor lead.
Crossover protection
Crossover protection is the abil-ity of the safety relay to detect faults (e.g. through cable com-pression or ground faults) in the safety chain to be monitored and to suppress the enabling of the enabling circuits until the exter-nal fault has been rectified.
EMERGENCY-STOP
EMERGENCY-STOP devices must have priority over all other functions.
The energy infeed to the ma-chine drives that can cause dan-gerous situations must be switched off as quickly as possi-ble without causing any further danger. Resetting of the drives must not result in restarting of the equipment. EMERGENCY-STOP must either function as a Stop Category 0 or Stop Category 1.
Resetting of the command de-vice must only be possible as a result of a manual action on the command device. Resetting of the command device must not initiate a restart command. Re-starting of the machine must not be possible until all operated po-sitioning components have been reset deliberately and individu-ally by hand (EN 418 "Safety of machines, EMERGENCY-STOP equipment, functional aspects, design guidelines").
The basic units of the 3TK28 Safety Relay can be imple-mented for EMERGENCY-STOP applications up to Category 4 of EN 954-1. Category 3 or 4 of EN 954-1 can be achieved de-pending on the external circuit and routing of the sensor leads.
Protective door monitoring
EN 1088 distinguishes between interlocked, isolating protective devices and interlocked, iso-lating protective devices with locking.
3TK28 Safety Relays are also used in this case for EMER-GENCY-STOP applications. Control systems for up to category 4 of EN 954-1 are pos-sible.
Pressing and stamping
The two-hand control unit is a device that requires both hands of the operator to be used simul-taneously as a means of protect-ing the operator from danger.
The overtravel test apparatus is used with linearly driven presses (e. g. hydraulic, pneumatic and spindle presses) in accordance with VBG 7n5.2. It only tests once on the test stroke for:• Correct connection of the oper-
ation elements• External cable interruption• Any failure of the cyclically
monitored components
The overtravel test unit can only be implemented in conjunction with a two-hand control unit.
The press control units and the overtravel test units are suitable for installation in control systems for eccentric, hydraulic and screw presses. They can be used up to Category 4 of EN 954-1. Type III C acc. to EN 574 is possible specifically for presses.
3TK28 safety relays
Safety Systems—Safety IntegratedSafety Relays
Siemens Energy & Automation, Inc.Industrial Controls Catalog
In the product series 3TK28 21 to 3TK28 27, 3TK28 30, 3TK28 34, 3TK28 35 press con-trol units, safety relays with posi-tively-driven contacts are used. This product series is character-ized by its space-saving width (22.5 mm + 45 mm).
Enabling contacts
Safety-related operation must be performed by safe output con-tacts, known as enabling con-tacts. Enabling contacts are al-ways NO contacts and switch off without delay.
Signaling contacts
An NC contact is used as the signaling contact, provided that a function with relevance for safety is not performed. An en-abling contact can also be used as a signaling contact. A signal-ing contact cannot be used as an enabling contact.
Delayed enabling contacts
Machine drives that overrun for a long time must be externally braked in the event of danger. For this purpose, the power sup-ply for electrical braking can be maintained (Stop Category 1 acc. to EN 60 204-1).
3TK28 basic units have off-delay enabling contacts in addition to instantaneous enabling con-tacts. Time delays of between 0.5 and 300 s are available with the different versions. A 3RP19 02 sealable covering cap (see Selection and Ordering Data, Accessories) can be fitted to protect against unauthorized adjustment of the set delay time.
Expansion units
If the number of enabling con-tacts of the basic unit are inade-quate, expansion units can be used. Expansion units provide either 4 (relay) or 7 (solid state) enabling contacts depending on the version selected. Up to six 3TK2830 relay expansion units can be connected to one 3TK282 safety relay base unit or one 3TK283 press control unit. Also, up to six 3TK2856 or 3TK2857 solid state expansion units can be connected to one 3TK284 solid state safety relay base unit or one 3TK285 solid state with contactor relay base unit.
Expansion units are not allowed to be operated separately in safety-related switching circuits; they must be combined with a basic unit. An enabling contact of the basic unit is required for connecting an expansion unit. The category of a control system with expansion unit corresponds to that of the basic unit.
Solid-state safety relays
The European foreword of EN 60204-1, Edition 11/98 per-mits safe solid-state solutions for safety tasks in addition to the generally applicable switching elements with contacts. This is conditional on the resulting de-gree of safety being as high as that met by the devices using contacts. The solid-state safety relays comply with Categories up to 4 according to EN 954-1 and SIL 3 (Safety Integrity Level) according to IEC 61508.
Description of functions
For internal circuit diagrams, see page 13/23.• The internal circuit is con-
structed with redundancy and diversity. The processors mon-itor each other dynamically.
• The output drivers are also re-dundant and diverse and are monitored by a cyclic self-test.
• All sensor signals are dynami-cally tested, so faults can be detected on the sensors, wires (crossovers), etc.
• The field-effect transistor (FET) is activated by both proces-sors. The output driver must be activated simultaneously by one of the two processors. Only then is the voltage con-nected safely from power sup-ply terminal A1 to output termi-nals 14 + 24.
• All solid-state switches (FET + output driver) are dynamically monitored by the processors.
• The required functionality (1-channel or 2-channel), moni-tored start or autostart, EMER-GENCY-STOP, protective door and cascading is set by means of bridges at the connection terminals.
Solid-state safety relays with floating, positively-driven enable contacts
With these devices, solid-state safety combinations are con-nected with contactor relays. The combination is supplied as a complete self-contained unit, fully wired and tested for snap-ping onto a standard rail. This unit combines the advantages of a solid-state safety combination and those of contactor relays with positively-driven contacts in a single device. Approvals and certificates have been awarded by the appropriate authorities.
Installation
For snap-on mounting on a stan-dard mounting rail acc. to EN 50 022. Screw mounting is also possible for the devices by means of 2 additional 3RP19 03 plug-in tabs.
Application manual
If you would like more informa-tion, please request the applica-tion manual "Safety Integrated: The Safety System for the Indus-tries of the World". Important in-formation on safety standards and regulations is provided here. You can select the right systems and products for use in modern safety installations from the complete, totally integrated safety concept "Safety Inte-grated", ranging from• Safety Integrated (command
• The fail-safe SIMATIC PLC• SINUMERIK Safety Integrated
or SIMODRIVEthrough to• Applications• Typical circuit diagrams, fail-
safe communication via stan-dard field buses.
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Overview
The safety pilot for safety relays with contacts guides you quickly to the right device
Type 1-channel connection
2-channel connection
Crossover protection
Category acc. to EN 954-1 4)
EMER-GENCY-STOP
Protective door
Enablingcontacts
Signal.contacts
Autostart Monitored start
B 1 2 3 4
Basic units3TK28 21 6) – 3 NO 1 NC –3TK28 22 – 1) 2 NO – –3TK28 23 – 2 NO – –3TK28 24 6) – 2 NO – –3TK28 25 3 NO 2 NC3TK28 27 }
2) 2 NO + 2 NO, delayed
1 NC –
3TK28 28 }2) 2 NO +
2 NO, delayed
1 NC –
Expansion units 3)3TK28 30 – – – – – 4 NO – – –
Press control units 5)3TK28 34 – – – 2 NO +
2 NC– – –
3TK28 35 – – – – – 3 NO + 1 NC
– – –
= available} = available, at additional cost– = not available
1) The ON button is not monitored.2) Only possible for instantaneous enabling contacts.3) The category acc. to EN 954-1 is identical to that of the basic unit.4) The maximum achievable category acc. to EN 954-1 is dependent on the
external connection, the choice of sensors and the physical arrangement on the machine. Compliance with the standards and regulations for safety at the machine is essential.
5) The overtravel test unit can only be used in conjunction with the two-hand control unit.
6) These devices support attainment of category 3 in accordance with DIN EN 954-1. Depending on the hazardous assessment, additional measures in the sensor circuit (e.g. protected routing) may be required.
3TK28 safety relays
Safety Systems—Safety IntegratedSafety Relays
Siemens Energy & Automation, Inc.Industrial Controls Catalog
• for EMERGENCY-STOP ms 200 80 20 200 – 25 25 – –• for supply failure ms 200 100 150 200 2510) 350 100 – –
Recovery time 250 250
• for EMERGENCY-STOP ms 200 200 400 200 – 200 after delay – –• for supply failure ms 200 200 600 200 100 500 1 s – –
Bridging of supply failures ms 60 30 80 60 35 100 30 40 40
Minimum command duration
• EMERGENCY-STOP ms 200 25 25 200 8) – 25 25 – –• ON button ms 150 40 25 150 8) – 25 25 – –
Simultaneity ms 500
Conductor cross-sections
Screw terminals
• finely stranded with end sleeve mm2 2 x (0.5 to 1.5), 1 x (0.5 to 2.5)• solid mm2 2 × (0.5 to 2.5), 1 × (0.5 to 4)
• tightening torque, M 3.5 screw Nm 0.8 to 1.2
Spring loaded (1 or 2 wires)
• solid mm2 2 × (0.25 to 1.5)• finely stranded with end sleeve mm2 2 × (0.25 to 1.0)• finely stranded without end-sleeve mm2 2 × (0.25 to 1.5)
• AWG wires, solid or stranded 2 × AWG 24 to 16
Permissible mounting position any
2 3 4
4 A 3,5 A 3 A4,5 A 4 A 3,5 A5 A 4,5 A 4 A
1) Possible if external measures are implemented. This information is applicable provided that the wires and sensors are reliably connected and mechanically protected. See operating instructions and applications manual.
2) Only applicable to the instantaneous enabling contacts; category 3 applies for time-delay enabling contacts.
3) Signalling circuit for 3TK28 21 = 6 A.4) Other fuses on request.5) Instantaneous/time-delay enabling contacts.
6) 2 A applied to enabl. cont. 13/14.7) With AC 24 V: 300 ms.8) With AC 115 V, 230 V: 300 ms.9) With AC 115, 230 V: 200 ms.10) With AC 115, 230 V: 80 ms.
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3TK28 safety relays
Safety Systems—Safety IntegratedSafety Relays
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Rated control supply voltages US DC 24 V and AC 50/60 Hz, 24, 115, 230 V
Enabling contacts
Signal.contacts
Achievable category
Rated control supplyvoltage US
Widthmm
With screw terminals With spring loaded terminals
acc. to EN 954-1
Order No. ListPrice $
Weightapprox.
Order No. List Price $
Weightapprox.
Preferred type 1 unit kg Preferred type 1 unit kg
Basic units for EMERGENCY-STOP and protective doors2)
3TK28 21 to 3TK28 24, screw terminals
Autostart
3 NO 1 NC B, 1, 2 3) AC/DC 24 V 22.5 3TK28 21-1CB30 159.00 0.276 3TK28 21-2CB30 166.00 0.246
2 NO – B, 1, 2, 3, 4 AC/DC 24 V 22.5 3TK28 22-1CB30 163.00 0.271 3TK28 22-2CB30 170.00 0.250
Monitored start
2 NO – B, 1, 2, 3, 4 AC/DC 24 V 22.5 3TK28 23-1CB30 163.00 0.271 3TK28 23-2CB30 170.00 0.247
Autostart
2 NO – B, 1, 2 3) AC/DC 24 V 22.5 3TK28 24-1CB30 140.00 0.254 3TK28 24-2CB30 145.00 0.230
2 NO – B, 1, 2 3) DC 24 V 22.5 3TK28 24-1BB40 131.00 0.249 3TK28 24-2BB40 138.00 0.228
2 NO – B, 1, 2 3) AC 115 V 22.5 3TK28 24-1AJ20 144.00 0.294 3TK28 24-2AJ20 151.00 0.265
2 NO – B, 1, 2 3) AC 230 V 22.5 3TK28 24-1AL20 144.00 0.288 3TK28 24-2AL20 151.00 0.270
3TK28 25, screw terminals
Autostart/monitored start
3 NO 2 NC B, 1, 2, 3, 4 DC 24 V 45 3TK28 25-1BB40 232.00 0.423 3TK28 25-2BB40 239.00 0.374
3 NO 2 NC B, 1, 2, 3, 4 AC 24 V 45 3TK28 25-1AB20 232.00 0.421 3TK28 25-2AB20 239.00 0.375
3 NO 2 NC B, 1, 2, 3, 4 AC 115 V 45 3TK28 25-1AJ20 232.00 0.519 3TK28 25-2AJ20 239.00 0.472
3 NO 2 NC B, 1, 2, 3, 4 AC 230 V 45 3TK28 25-1AL20 232.00 0.516 3TK28 25-2AL20 239.00 0.475
Monitored start
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) DC 24 V 45 3TK28 27-1BB40 323.00 0.497 3TK28 27-2BB40 334.00 0.455
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 24 V 45 3TK28 27-1AB20 323.00 0.496 3TK28 27-2AB20 334.00 0.454
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 115 V 45 3TK28 27-1AJ20 334.00 0.650 3TK28 27-2AJ20 345.00 0.606
3TK28 27 and 3TK28 28, screw terminals
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 230 V 45 3TK28 27-1AL20 334.00 0.650 3TK28 27-2AL20 345.00 0.604
off-delay, tv 0.5 - 30 s
Monitored start
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) DC 24 V 45 3TK28 27-1BB41 323.00 0.495 3TK28 27-2BB41 334.00 0.454
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 24 V 45 3TK28 27-1AB21 323.00 0.499 3TK28 27-2AB21 334.00 0.454
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 115 V 45 3TK28 27-1AJ21 334.00 0.650 3TK28 27-2AJ21 345.00 0.240
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 230 V 45 3TK28 27-1AL21 334.00 0.650 3TK28 27-2AL21 345.00 0.605
off-delay, tv 0.05 - 3 s
Autostart
3TK28 21, with spring loaded terminals
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) DC 24 V 45 3TK28 28-1BB40 323.00 0.496 3TK28 28-2BB40 334.00 0.457
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 24 V 45 3TK28 28-1AB20 323.00 0.500 3TK28 28-2AB20 334.00 0.468
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 115 V 45 3TK28 28-1AJ20 334.00 0.650 3TK28 28-2AJ20 345.00 0.609
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 230 V 45 3TK28 28-1AL20 334.00 0.650 3TK28 28-2AL20 345.00 0.612
off-delay, tv 0.5 - 30 s
Autostart
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) DC 24 V 45 3TK28 28-1BB41 323.00 0.499 3TK28 28-2BB41 334.00 0.450
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 24 V 45 3TK28 28-1AB21 323.00 0.501 3TK28 28-2AB21 334.00 0.545
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 115 V 45 3TK28 28-1AJ21 334.00 0.657 3TK28 28-2AJ21 345.00 0.240
2 NO + 2 NO 1 NC B, 1, 2, 3, 4 1) AC 230 V 45 3TK28 28-1AL21 334.00 0.650 3TK28 28-2AL21 345.00 0.608
off-delay, tv 0.05 - 3 s
1) Only applicable to the instantaneous enabling contacts.2) For dimension drawings see page 13/22.
3) These devices support attainment of category 3 in accordance with DIN EN 954-1. Depending on the hazardous assessment, additional measures in the sensor circuit (e.g. protected routing) may be required.
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13/21
3TK28 safety relays
Safety Systems—Safety IntegratedSafety Relays
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Rated control supply voltages US DC 24 V and AC 50/60 Hz, 24, 115, 230 V
Accessories
Enablingcontacts 1)
Signal.contacts
Achievablecategory 2)
Ratedcontrol supplyvoltage US
Widthmm
With screw terminals With spring loaded terminals
acc. to EN 954-1
Order No. ListPrice $
Weightapprox.
Order No. ListPrice $
Weightapprox.
Preferred type 1 unit kg Preferred type 1 unit kg
Expansion units 5)
3TK28 30 To increase the number of contacts of the safety relays
(for connecting to the basic unit, 1 enabling contact of the basic unit is required for connection)4 NO4 NO4 NO
– 3)– 3)– 3)
as basic unitas basic unitas basic unit
AC/DC 24 VAC 115 VAC 230 V
22.522.522.5
3TK28 30-1CB30
3TK28 30-1AJ20
3TK28 30-1AL20
175.00
175.00
175.00
0.2670.3060.306
3TK28 30-2CB30
3TK28 30-2AJ20
3TK28 30-2AL20
182.00
182.00
182.00
0.2440.2760.276
Press control units 5)
3TK28 34, 3TK28 35, screw terminal
For use in presses and stamping machines
Two-hand control unit, two-channel2 NO 2 NC 4 DC 24 V 45 3TK28 34-1BB40 364.00 0.432 3TK28 34-2BB40 375.00 0.3832 NO 2 NC 4 AC 24 V 45 3TK28 34-1AB20 364.00 0.424 3TK28 34-2AB20 375.00 0.3762 NO 2 NC 4 AC 115 V 45 3TK28 34-1AJ20 364.00 0.519 3TK28 34-2AJ20 375.00 0.4722 NO 2 NC 4 AC 230 V 45 3TK28 34-1AL20 364.00 0.519 3TK28 34-2AL20 375.00 0.472Overtravel test unit 4)3 NO 1 NC 4 DC 24 V 45 3TK28 35-1BB40 431.00 0.495 3TK28 35-2BB40 442.00 0.4543 NO 1 NC 4 AC 24 V 45 3TK28 35-1AB20 431.00 0.476 3TK28 35-2AB20 442.00 0.4543 NO 1 NC 4 AC 115 V 45 3TK28 35-1AJ20 431.00 0.572 3TK28 35-2AJ20 442.00 0.051
Order No. List Price $ Weightapprox.
Packing
Preferred type 1 packing kgSealable cap
to secure against unauthorized adjustment, for 3TK28 27 and 3TK28 28 devices
3RP19 02 18.00 0.004 5 units
Push-in lugs for screw mounting
for 3TK28 21 to 3TK28 57 (1 set = 2 units)3RP19 03 1.40 0.002 5 sets
1) Enabling contacts are contacts of relevance to safety, which can also be used for signalling purposes.
2) The maximum achievable category acc. to EN 954-1 is the category of the basic unit. The category also depends on the external circuit, the command device selected and their location on the machine. Compliance with the standards and regulations for safety at the machine is essential.
3) Return circuit with NC contact 51 + 52.4) The 3TK28 35 overtravel test unit can only be used in conjunction with the
3TK28 34 two-hand control unit.5) For dimension drawings see page 13/22.6) Discount Code:SIRIUS Relays & Timers.
3TK28 50 3 – – – – 6 A 10 A –3TK28 51 2 – – – 1 NC 6 A 10 A –3TK28 52 6 – – – 1 NC 6 A 10 A –3TK28 53 3 – 1 – – 6 A 10 A – – 13TK28 56 6 – 1 – 1 NC 6 A 10 A – – 13TK28 57 – 3 1 – – 6 A 10 A – – 1
Y11 Y12 Y35 Y21 Y22 Y32 Y34 A1
42412A
µC1 µC2
FET
NS
C 0
0606
1
Output driver
06IC13_019-024.qxd 2/18/06 1:38 PM Page 13/23
13/24
Technical data
1) 1 enabling contact, instanta-neous, floating, up to 230 V, 1.5 A. 1 enabling contact, instantaneous DC 24 V, 1.5 A, source output. 1 enabling contact, delayed, float-ing, up to 230 V, 1.5 A. 1 enabling contact, delayed DC 24 V, 1.5 A, source-sink output.
2) For relay outputs, use a fuse link: NH Type 3NA, DIAZED Type 5SB, NEOZED Type 5SE: 6 A (weld-free protection at IK = 1 kA).
3) When the cascading input is sup-plied from A1, the maximum re-sponse time is applicable to an external EMERGENCY STOP.
4) The drivers are not supplied, inter-nal supply bridging only. SELV/PELV power section buffered.
5) Response time 20 ms also for ex-ternal EMERGENCY STOP (cas-cading input).
6) Electrical equipment for furnaces. Certificate acc. to VDE 0116 for 3TK28 41 and 3TK28 42 only.
7) For instaneous output.
Type 3TK28 40 3TK28 41 3TK28 42 3TK28 45 1)
Specifications EN 60 204-1 (VDE 0113 Part 1) EN 954-1, IEC 61 508, VDE 0116 6), EN ISO 12100
Category acc. to EN 954-1 3 4 4 4
Test certificates TÜV, UL, CSA
Electrical endurance unlimited, due to solid-state switching
OverviewSafe 3RA7 starters consist of safety electronics, MSPs and two series-connected contac-tors. The combination of safety electronics, MSPs and contac-tors form a complete, fully assembled, wired and certi-fied starter with a coordination type 1 or 2. A special case is the 3RA71 .0 . starter without MSP, which is intended for sep-arate or fuse-protected mount-ing.Safe 3RA7 starters are offered for direct starting. Available actuating voltages are 230 V 50/60 Hz (category 3) and DC 24 V(category 3 and 4). Depending on external protec-tion, choice of actuating devices and their local arrangement at the machine, categories 3 or 4 can be reached. Also available in the fuse-protected load feed-ers range are expansion units with and without time delay.
Expansion units can be used only in combination with a basic unit. With the expansion units with time delay, starters of Stop category 1 can be constructed.Because the starter consists of the 3RV1 MSP and the 3RT1 contactors, accessories, such as auxiliary switches, from the SIRIUS range can be used.
MountingThe 3RA7 fused starters can be snapped onto a DIN EN 50 022-35 × 15 mounting rail.
Technical dataFor technical data of the elec-tronics, see page 13/30. The technical data for the power section (MSP and contactors) is found in section 4. For additional technical data for the individual devices, see the circuit-breaker and contactors section.Power for the electronics of the DC 24 V 3RA7 devices should be supplied by a power supply unit acc. to VDE 0106 (PELV) with protection class III.
Overload tripping timesAll 3RA7 fuseless load feeders described here are designed for normal starting, in other words for overload tripping times of less than 10 seconds. (CLASS 10). At rated-load oper-ating temperature the tripping time is shorter, depending on the particular equipment and the setting range. The exact values can be derived from the tripping characteristics of the circuit-breakers.
For further information about safety equipment an application manual is available.
Configuration
Types of coordinationDIN VDE 0660 Part 102 and IEC 60 947-4-1 make a distinc-tion between two different types of coordination (types 1 and 2). Any short-circuits that occur are cleared safely by both types of coordination. The only differ-ences concern the extent of the damage caused to the equip-ment by a short-circuit.
Type of coordination 2There must be no damage to the overload trip or to any other components after a short-circuit has been cleared. The 3RA fuseless load feeder can resume operation without needing to be renewed. At most, it is permissible to weld the contactor contacts if they can be disconnected easily without any significant defor-mation.
Cascading, expansionWith the category 4 devices, several protective devices can be easily connected (cascaded) and expanded to a hardwired safety logic circuit. For this purpose, the category 4 devices each have an electronic, protect-ed output (terminal 2) and a cascading input (termin-al 1). At terminal 1, the de-vices expect and evaluate a protected 24 V signal. If this signal is not present, the de-vice shuts down safely. The startup conditions corre-spond with those of a sensor shutdown (Emergency-Stop actuation).
Operational switchingThrough terminals 3 and 4 of the category 4 devices, opera-tional switching (On/Off) of the contactor is possible. Two methods of operational switch-ing are available. Through
a floating contact (terminals 3 and 4) or with potential (DC 24 V), for example through a PLC (terminal 4 only). Opera-tional switching is subordinate to the safety function.
Example of circuit for cascading with 3TK28 41 and 3RA7 1 (category 4 or expansion units)
3RA7up to 22 A
Safety Systems—Safety IntegratedStarters with Integrated Safety
Inc.talog
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Technical data of the safety electronics of the 3RA7 load feeders .For the technical data of the power section (MSP, contactors), please see the table for starters in Section 4.
Type Basic unit ACCategory 3
Basic unit DCCategory 3
Basic unit DCCategory 4
Expansion unit Expansion unittime-delayed
Specifications EN 60 204-1, EN 292, EN 954-1, IEC 61 508
Test certification TÜV, UL, CSA
Category acc. to EN 954-1 3 3 4 41) 41)
Safety Integrated Level (SIL)acc. to IEC 61 508
2 2 3 31) 31)
Rated insulation voltage 690 V
Impulse voltage withstand level 6 KV
Permissible temperaturein operation
in storage– 20 ... + 60 °C (– 4 ... + 140 °F)– 40 ... + 80 °C (– 40 ... + 176 °F)
Degree of protection IP 20
Shock-hazard protection safe from finger-touch
RatingDC/AC-actuation at 1.0 x Us 2 W2)
Operating rangeAC actuationDC actuation
0.85 ... 1.1 x Us0.9 ... 1.1 x Us
Closing timeMonitored start
Autostart125 ms typical3)250 ms typical3)
400 ms typical3)400 ms typical3)
Opening timeon Emergency-Stop
on supply failure20 ms typical4)
100 ms 25 ms typical
100 msafter time elapsed100 ms
Recovery timeon Emergency-Stop
on supply failure20 ms typical20 ms typical
400 ms typical4 s
Mains failure bridging 5 ms (see technical data of used contactors)
1) The highest achievable category is equal to the cat-egory of the basic unit. The category also depends on the external protection, the choice of actuating devices and the local arrangement at the machine. The normative safety standards at the machine must be observed.
2) Observe power dissipation of each power section (see technical data for circuit-breakers/contac-tors).
3) Observe the pick-up delay of the contactors (see technical data for the contactors).
4) Observe the drop-out delay of the contactors (see technical data for the contactors).
3RA7up to 22 A
Safety Systems—Safety IntegratedStarters with Integrated Safety
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Direct-in-line starting Rated control supply voltage 50/60 Hz AC 230 V for standard 35 mm rail
MSPs, contactors and protective electronics fullyprewired and certified to category 3 acc. to EN 954-1Auxiliary switches on the MSP and the contactorcan be easily fitted due to the modular system
Three-phase standard motor1)4-pole at AC 400 V
Setting range Inverse-time delayed overload release
Starters with integrated safety Size
Order No. ListPrice $
Weightapprox.
Ratedpower
Motor current
P I Basic unitCategory 32)kW A A 1 unit kg
Type of coordination 2 at Iq = 50 kA at 400 V (compatible with type of coordination 1)0.04 0.16 0.11 ... 0.16 3RA71 01-0AA17-0AL2 469.00 0.82 S000.06 0.2 0.14 ... 0.2 3RA71 01-0BA17-0AL2 469.00 1.440.06 0.2 0.18 ... 0.25 3RA71 01-0CA17-0AL2 469.00 0.820.09 0.3 0.22 ... 0.32 3RA71 01-0DA17-0AL2 469.00 1.43
for separate surface mounting of MSPs and contactorsor surface mounting with fuse protection
1) Selection depends on the actual startup and rated data of the protected motor.
2) The highest achievable category acc. to EN 954-1 is equal to the category of the basic unit. The category also depends on the external protection, the
selection of actuating devices and the local arrange-ment at the machine. The normative safety standards at the machine must be observed.
3RA71 02 3RA71 00
Contactor safety combination
3RA7up to 22 A
Safety Systems—Safety IntegratedStarters with Integrated Safety
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Direct-in-line starting Rated control supply voltage DC 24 Vfor standard 35 mm rail
MSPs, contactors and protective electronics fullyprewired and certified to category 4 acc. to EN 954-1Auxiliary switches on the MSP and the contactorcan be easily fitted due to the modular systemExpansion units for multiplication of starters in a safety circuit
Three-phase Setting range,thermal overloadrelease
Starters with integrated safety Sizemotor1) 4-pole,at AC 400 V
Order No. ListPrice $
Weightapprox.
Rated Motorpower current Basic unit Basic unit Expansion2) Expansion, Expansion,P I
for separate mounting of circuit-breakers and contactorsor mounting with fuse protection
1) Selection depends on the actual startup and rated data of the protected motor.
2) The highest achievable category acc. to EN 954-1 is equal to the category of the basic unit. The cate-gory also depends on the external protection, the choice of actuating devices and the local arrange-ment at the machine. The normative safety stand-ards at the machine must be observed.
3RA71 01 3RA71 00
Contactor safety combination
3RA7up to 22 A
Safety Systems—Safety IntegratedStarters with Integrated Safety
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Size S00 · for standard rail mounting Size S0 · for standard rail mounting
3RA71 .1-, size S00 3RA71 .2-, size S0
Size S0 · for standard rail mounting and contactor combination
3RA71 .0-, size S0
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Application Cable-operated switches are used for monitoring or for EMER-GENCY-STOP facilities on par-ticularly endangered system sections. They are available with metal enclosures.
As the effective range of a cable-operated switch is limited by the length of the pull-wire, large sys-tems can also be protected.
Cable-operated switches (re-quiring pulling at both ends) and conveyor belt unbalance track-ers are used primarily for monitoring very long belt sys-tems.
SpecificationsSwitches with latching for imple-mentation in EMERGENCY-STOP equipment correspond to the EN 418 standard.
Principle of operationThe switch contacts of the cable-operated switches and the con-veyor belt unbalance protection devices are positive opening.
Cable-operated switches with one-side operation are held in free position by the pre-tension force on the turnbuckle.
• In the 3SE7 140, -150 and -160 cable-operated switches, both switching contacts are avail-able for cable-break/cable pull signaling. The NO contact is used, for example, for signal-ing purposes.
For switches with latching, with a pretensioned cable, the locking must be deactivated beforehand in order to return the switch to its free position.
Technical data
Travel diagrams
Type 3SE7 120 3SE7 150 3SE7 140 3SE7 141 3SE7 160 3SE7 310Standards IEC 60947-5-1, EN 60947-5-1 (VDE 0660 Part 200); IEC 60204-1, EN 60204-1 (VDE 0113 Part 1); EN 418 (ISO 13850)
Certifications UL / CSA
Electrical design Contacts electrically isolated from each other
Electrical loading• at AC-15 AC 400 V, 6A AC 250 V, 2A AC 400 V, 6A
• minimum AC/DC 24 V, 10 mA
Short circuit protection 6 A (Slow acting)
Mechanical endurance > 1 x 106 operating cycles
Contact material Fine silver
Actuation By pulling or breaking of a rope (cable)
Rope length, maximum Spacing between rope supports, maximum
10 m
3 m
25 m
3 m
50 m
5 m
75 m 1)
5 m
2 x 50 m
5 m
–
–
Enclosure GD alloy, coated (color), dark black RAL 9005
Cover Shock-resistant thermoplastic
Degree of protectionacc. To IEC 60529 IP65 IP66 1P65
Ambient temperature -25C to +70C
Mounting Designed for M 5
Mounting space 30 mm and 40 mm
Cable entry 2x(M20x1.5)2x(M25x1.5)
2x(M20x1.5) 1x(M16x1.5) 3x(M20x1.5) 2x(M25x1.5)
Type of connection M3.5 screw connection; Self-lifting pressure plate terminals
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Discount Code: SIRIUS Safety Switches
Siemens / Industrial Controls Previous folio:
Selection and ordering data
2 contacts · With one-side actuation · Degree of protection IP 65 · Latching according to EN 418 2)
for cable lengths 1)
Maximumspacing between the cablesupports
Design Contacts(NO as signalling contact)
Order No. ListPrice $
Weight approx.
m m 1 unit kg
Cable-operated switches 2)3SE7 120-1BF00 10 3 Metal enclosure
(cover made of molded plastic) • Without latching, only cable pull
monitoringM25 x 1.5 Conduit
1 NO + 1 NC 3SE7 120-2DD01 152.00 0.395
• With latching and button resetM20 x 1.5 Conduit
2 NC 3SE7 120-1BF00 198.00 0.410
3SE7 150-1BD00 25 3 Metal enclosure with M 20 conduit(cover made of molded plastic) with dust protection and alignment window• Without latching
• with LED, RED, 24 VDC1 NO + 1 NC1 NO + 1 NC
3SE7 150-2DD00
3SE7 150-2DD04 5)
152.00
236.000.4250.425
• With latching and button reset 1 NO + 1 NC2 NC
3SE7 150-1BD00
3SE7 150-1BF00
195.00
195.00
0.4450.440
• with LED, RED, 24 VDC 1 NO + 1 NC 3SE7 150-1BD04 5) 278.00 0.450
• with latching and key reset 1 NO + 1 NC 3SE7 150-1CD00 214.00 0.5103SE7 141-1EG10 75 6) 5 Metal enclosure with M 20 conduit
(cover made of molded plastic)
• with EMERGENCY STOP andLockout release
1 NO + 3 NC 3SE7 141-1EG10 245.00 0.790
3SE7 140-1B.00 50 5 Metal enclosure with M 16 conduit(cover made of molded plastic)with dust protection• With latching and button reset 1 NO + 1 NC
2 NC3SE7 140-1BD00
3SE7 140-1BF00
457.00
457.00
0.7920.790
• with LED, RED, 24 VDC 1 NO + 1 NC 3SE7 140-1BD04 510.00 0.820• with latching and key unlatching 1 NO + 1 NC 3SE7 140-1CD00 550.00 0.835
3SE7 160-1AE00 2 × 50 5 Metal enclosure with M 25 conduitwith two-direction actuation, latching andbutton reset
• with LED, RED, 24 VDC
2 NO + 2 NC1 NO + 1 NC2 NO + 2 NC
3SE7 160-1AE00
3SE7 160-1BD00
3SE7 160-1AE04
488.00
419.00
535.00
1.2700.3001.200
Conveyor belt unbalance protection device3SE7 310-1AE00 Metal enclosure with M25 conduit
with latching and pressure unlatching
• with LED, RED, 24 VDC
2 NO + 2 NC
2 NO + 2 NC
3SE7 310-1AE00
3SE7 310-1AE04
612.00
658.00
1.805
1.815
Positive opening acc. to IEC 60 947-5-1, Appendix K, and DIN VDE 0660 Part 200.
1) These cable lengths can be used with max. temperature deviationsof ±15°. 75 m cable length possible probided the ambient temperature range is strictly observed, otherwise, 50 m.
2) For conduit thread adaptors see page 13/97.3) LED, RED, 24 VDC with M 20 x 1.5 thread and 25 mm dia. lens.
4) See page 13/68 for switch with AS-Interface connection.5) Alignment window not included.
6) 75 m rope length possible provided the ambient temperature range is strictly observed, otherwise 50 m max.
3)
3)
4)
3)
3)
4)
4)
3SE7 1.0 / 3SE7 310Molded plastic / metal enclosure
Metal enclosure3SE7 120-2DD.., 3SE7 150-2DD..without latching
3SE7 120-1B..., 3SE7 150-1B...with latching and button reset
Metal enclosure3SE7 140-1B...with latching and button reset
3SE7 140-1CD.with latching and key reset
Metal enclosure3SE7 150-1CD..with latching and key reset
3SE 7141-1EG10.with EMERGENCY STOP and Lockout release
3SE7 160-1AE..with latching and button reset
3SE7 310-1AE.. conveyor belt unbalance protection devicewith latching and button reset
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13/38
Construction
Long lengths of rope up to 50 m 2)
Pulling from both sides up to 2 x 50 m 2)
Actuation forces and distances:
Rope releases Rope pulled
Type Tencing force (at middle point)
Force at operating position
Distance to operating position2)
Force at operating position
Distance to operating position2)
3SE7 150-1CD. , 232 (N) 130 (N) 3 mm 312 (N) 3 mm
3SE7 150-2DD. . 217 (N) 120 (N) 3 mm 311 (N) 3 mm
3SE7 150-1BD. . 210 (N) 133 (N) 2 mm 270 (N) 2 mm
3SE7 140-1CD. . 400 (N) 200 (N) 2.5 mm 550 (N) 3 mm
3SE7 150-1BD. . 400 (N) 250 (N) 3 mm 570 (N) 3 mm 2) 0-Basis at mid-position
Assembly note:
Rope eye ø 43SE7 930-1AD
Rope roller, fixed3SE7 921-1AC
Tension spring 1)35 N3SE7 931-1AD
Tension spring 1)35 N3SE7 931-1AD
Rope rollers, fixed3SE7 921-1AC
EyeboltM 103SE7 920-1AC
Ropeclamp,simplex4 mm,oval4 mm
SIGUARDcable-operatedswitch3SE7 160
Ropeclamp,simplex4 mm,oval4 mm
Ropeclamp,simplex4 mm,oval4 mm
Rope eye ø 43SE7 930-1AD
Rope roller, fixed3SE7 921-1AC
NS
C0
0049
9aTurnbuckleM 6 x 603SE7 950-1AB
Ropeclamp,simplex4 mm,oval4 mm
Ropeclamp,simplex4 mm,oval4 mm
Rope eye ø 43SE7 930-1AD
1) Use of a tension spring is essential for long sections of rope.2) See page 13/35 for maximum spacing between cable supports.3) For Medium lengths of rope, less than 25 m, Eyebolt M8, Order No. 3SE7 920-1AB, can be used.
p3SE7 910
Recommended rope length with Emergency-STOP rope pull switches depending on ambient temperature ranges.
3SE7 1.0 / 3SE7 310Molded plastic / metal enclosure
Rope Pull Switches might be used as Emergency-STOP devices to cover a continuous distance for immediate shut-off instead of using common E-STOP pushbutton devices.SIGUARD rope pull switches with latching meet the requirements according to EN418 and provide NC contacts with direct opening action. Rope pull switches without latching can only be used as normal stop devices.
SIGUARD Rope Pull switches• trip due to a pulled and a bro-
ken rope• are equipped with a manual re-
set to close NC contacts after retensing the rope
• can be mounted in any direc-tion
• cover different rope lengths up to 50m
• support a whole range of ac-cessories and mounting equip-ment
• shall be used with the offered steel rope with red plastic coat-ing
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13/40
3SE2 / SE3 Molded plastic /metal enclosure with separate actuator
ApplicationSafety interlock switches with separate actuator are used where the position of doors, cov-ers or safety screens must be
monitored for safety reasons. For example, they can be used together with 3TK28 safety re-lays up to safety category 4.
ConstructionInterlock switches with separate actuator are available in three versions.• Molded plastic enclosure with
mounting dimensions accord-ing to EN 50 047
• Metal enclosure with mounting dimensions according to EN 50 041
• Molded plastic enclosure out-side of the standards that have arisen in this form in accor-dance with general market re-quirements.
When used as a safety switch mounting at a spacing of 20 mm (molded plastic housings) or 30 mm (metal housing) is neces-sary. Or, the interlock switch must be fitted with a pin or stop.
OperationInterlock switches with separate actuator can only be operated with a matching triple-coded ac-tuator. Actuation by hand or with auxiliary devices is virtually im-possible.The actuators are not included with the interlock switch and must be ordered separately.
Side operating heads can be ro-tated in 90° increments and can-not be replaced with actuators of the standard type.Operating heads for the 3SE2 243 and 3SE2 257 types cannot be changed.
Radius actuatorInterlock switches with radius actuators are particularly suit-able for rotatable protection de-vices. The movable actuation key allows even small radii to be approached. Damage to the switch and the actuator due to inaccurate approach is pre-vented.
Contact reliabilityThe movable contacts of the 3SE2 120, 3SE3 170 and 3SE2 200 switches are designed as double-break contacts. This en-sures extremely high contact stability, even when the devices are switching low voltages and currents, e.g. DC 5V / 1 mA.
• For direct current Ie / DC-12 Ie / DC-13AV 42 ta- 10 10AV 84 ta- 6 4AV 011 ta- 4 1AV 022 ta- 1 0.4AV 044 ta- 0.5 0.2
Short circuit protection1),DIAZED fuse links
• Operational class gL/gG A 6
• Quick response characteristic A 10
Mechanical endurance > 1 x106 operating cycles
Electrical endurance
• With 3RH11, 3RT10 16 to 3RT10 26 contactors
> 1 x106 operating cycles
• For AC-15 duty 0.5 x106 operating cycles when interrupting Ie / AC-15 at 230 V
• For DC-13 duty With DC the contact endurance depends not only on the breaking current but also on the voltage, the circuit inductance and the speed of switching. No generally valid information can be given.
Operating frequencywith 3RH11, 3RT10 16 to 3RT10 26 contactors
3SE2 120 / 2SE3 170Metal enclosure with separate actuator
13/42
Selection and ordering data
2 or 4 contacts · Moving double break contacts1)3)
Operation, operating speed and travel
Actuation/Fixing Enclo-sure width/length of ac-tuator
3SE. position switches 3SE. position switches 3SE. position switches Wght. ap.with 2 slow-action contacts with 2 slow-action contacts with 4 slow-action contacts
6 mm stroke 6 mm stroke 6 mm stroke
Ident. No. 11 acc. to EN 50 013
Ident. No. 02acc. to EN 50 013
Ident. No. 22 acc. to EN 50 013
Order No. ListPrice $
Order No. ListPrice $
Order No. ListPrice $
mm 1 unit 1 unit 1 unit kg
Metal enclosure IP 67, EN 50 0413SE2 120-0XX
Side Entry1)• M 20 x 1.5
connecting thread• 1/2” NPT
connecting thread• 4-pole M12
male receptacle
3SE2 120-0XX
3SE3 170-0XX
3SE2 120-0XX00-0AC4
87.00
92.00
123.00
3SE2 120-6XX
3SE3 170-6XX
3SE2 120-6XX00-0AC4
87.00
92.00
123.00
3SE2 120-4XX
3SE3 170-4XX
-
92.00
92.00
0.350
0.350
0.360
Actuator
• Standard 79 3SX3 197 13.00 0.027
• With transversemounting
• For lateralmounting
50
50
3SX3 206
3SX3 306
13.00
13.00
0.025
0.025
• Universal radius actuator
• Approach fromthe left
80
132
3SX3 203
3SX3 207
77.00
14.00
0.113
0.085
Positive opening acc. to IEC 60 947-5-1,Appendix K.
1) Supplied without actuator.2) Radius actuator (universal): Rmin > 70 mm.
3) For conduit thread adaptors see page 13/97.
Actuator Operation by a separate bar Switch blocks Nominal traveland related terminals
Minimumforce re-quired in operating direction on retraction
vmax max. operating speeddirection of operation
Internal circuit diagramTerminal designation acc. to EN 50 013
contact closedcontact open
Radius actuation: for all approach directions
Actuator in actuator head; NC is closed
Separate actuator Slow-action contacts perpendicular to plunger axis
ApplicationThe SIGUARD interlock switches with solenoid are exceptional, technically safe devices which restrict and prevent an unfore-seen or intentional opening of protective doors, protective grilles or other covers as long as a dangerous situation is present
(i. e. operation of moving parts after the machine has been switched off).The safety switch with solenoid basically has two main func-tions:• Enabling the machine with a
closed and locked protective system
• Locking the machine with a opened protective system.
ApprovalsThe metal-enclosed SIGUARD position switches with solenoid have been awarded a test certif-icate in accordance with Ger-man regulations (BIA).
The switches are approved for use with locking devices that ac-cord to EN 1088 and EN 292, Parts 1 and 2.
ConstructionSIGUARD interlock switches with solenoid are offered in molded plastic or metal hous-ings.The separate actuator operates in a similar way to the coding of a key and protects against ma-nipulation. It transmits the lock-ing force to the protection sys-tem and helps to monitor its po-sition.There are two types of locking:• In the solenoid unlocking ver-
sion, the SIGUARD position switch locks by means of spring force and releases by means of electromagnetic force (closed-circuit principle). When a power failure occurs, it prevents com-
ponents which are still rotating from opening. For emergency situations or in setup mode, the switch is equipped with an auxiliary release which is se-cured against unauthorised use either with a seal or lock. This means that release is still possible even when a power failure occurs.
• The solenoid locking version offers locking by means of electromagnetic force and re-lease by means of spring force (open-circuit principle). This version has an advantage when it is important to get at components when a power fail-ure has occured.
ContactsSwitches with 4 contacts monitor the actuator or position of the protective door, as well as moni-tor the position of the solenoid.The mechanical design of the switches corresponds to the re-quirements of the fail-safe princi-ple of EN 1088, whereby it is not possible to close the NC con-tacts when the door is open.
OperationThe operating mechanism with side actuation can be adjusted through 4 × 90°.The 3SE3 .5. and 3SE3 .6. switches can also be ap-proached from above.A universal radius actuator is available for small actuating ra-dii; the actuator can be moved in all 4 directions.The actuators are not included with the switch and must be or-dered separately.
Functions3SE2 83 and 3SE2 84 interlock switches with solenoid are available with an optical switch indication.
An optical switch indication provides the switching posi-tion of the lock and the protec-tive device by means of 2 LEDs on the enclosure sur-
face. This option is possible only with switches that have 1NO/1NC + 1NO/1NC contact arrangement.
Protective Device Locking Mechanism Indication Meaning
tuo dellup eb ot eerf rotautcAneerG dna wolleYnepOdesolC
dekcol rotautcAneerGdesolCdesolC
dellup rotautcAwolleYnepOnepO
General dataMolded plastic / metal enclosure with solenoid
Safety Systems—Safety IntegratedInterlock Switches with Locking
Siemens Energy & Automation, Inc.Industrial Controls Catalog
• For direct current Ie / DC-12 Ie / DC-13AV 42 ta- 10 3AV 06 ta- 5 1.5AV 011 ta- 2.5 0.7AV 022 ta- 1 0.3
Coil Power Rating W 5.5 5.2
Short circuit protection1),DIAZED fuse links
• Operational class gL/gG A 6
• Quick response characteristic A 10
Mechanical endurance 1 ×106 operating cycles
Electrical endurance
• With 3RH11, 3RT10 16 to 3RT10 26 contactors
1 ×106 operating cycles
• For AC-15 duty 0.5 ×106 operating cycles when interrupting Ie / AC-15 at 230 V
• For DC-13 duty With DC the contact endurance depends not only on the breaking current but also on the voltage, the circuit inductance and the speed of switching. No generally valid information can be given.
Operating frequencywith 3RH11, 3RT10 16 to 3RT10 26 contactors
Application3SE6 magnetic systems are de-signed for mounting on movable protective guards such as cov-ers, flaps, doors, ..., etc. The magnetically operated safety switches stand out due to their
high degree of protection (IP67) and enclosed design. They are particularly suited for areas where cleaning, disinfecting or contamination plays an impor-tant role.
Magnetic switches are offered in either 1 NC / 1 NO or 2 NC con-tacts for applications up to Cate-gory 3 or Category 4 depending on the evaluation unit selected.Up to six 3TK2830 expansion
units can be connected to one 3TK282, 3TK283, 3TK284, or 3TK285 base unit.
ConstructionA complete system consists of a coded switching magnet with switch block and a safety rated evaluation unit. Spacers should
be used for mounting on ferrous metal surfaces. The switch blocks must be actuated in order to enable the safety outputs of
the safety rated evaluation unit. If some inputs are not con-nected, the unused NO inputs of the monitor must be bridged.
Compatible systems consist of the following coded switching magnets with switch blocks and safety rated evaluation units.
Magnetic Switch Overview - Compatible Systems
1) Meets Category 3 acc. to EN 954-1 2) Meets Category 4 acc. to EN 954-1
Magnet Switch Monitor 3SE6806-2CD00
The magnet switch monitor operates as a NO circuit with two floating release circuits (safety circuits); and, as a NC circuit using a floating signal circuit. The number of release circuits can be increased by adding 3TK2830 expansion modules.
Three green LEDs indicate the status of the magnet switch monitor.• LED POWER ON: Rated con-
trol supply voltage Uc is ap-plied
• LED CHA 1 ON: All NO con-tacts of the connected magnet switches are open
• LED CHA 2 ON: All NC con-tacts of the connected magnet switches are closed
Up to six magnet switches can be connected to the magnet switch monitor. Cross-circuits between the magnet switch circuits, faults to earth and wire breaks are detected by the
magnet switch monitor. “Manual start” and “Automatic start” modes can be activated by wiring terminals X1 and X2, or X1 and X3, respectively. The monitor has six current sourcing semiconductor outputs (Y1 through Y6) which indicate the status of the connected safety devices.
SIMATIC ET200 M,PROFIsafeSM326 DI DC 24 V,SM326 DI 8 x NAMUR
3SE6 General data
Safety Systems—Safety IntegratedMagnet Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Inc.talog
Siemens / Industrial Controls Previous folio: New Page
06IC13_051-058.qxd 11/10/05 6:46 PM Page 13/55
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13/56
Technical data
Magnet Switches
Type3SE6 60.-1BA3SE6 60.-2BA 3SE6 60.-3BA
FormM30,25 mm x 88 mm 25 mm x 33 mm
Standards DIN EN 50947-5-3Sensing type MagneticRated voltage AC/DC 100 V DC 24 VRated current 400 mA 100 mAPerformance 10 VA/W 1 WMax. switching frequency 5 HzMax. sensing distance San ... Sab 5 ... 15 mm 4 ... 14 mmHousing material Thermoplastic strengthened with glass fiberDegree of protection acc. to IEC 60529
IP67
Permissible ambient temperature
• Operating –25 to +70 °C• Storage –25 to +70 °CShock resistance 10 g/11msVibration resistance 10 ... 55 Hz, 1 mm amplitude
ConductorCable LiYY 4 x 0.25 mm2
3 m lengthReceptacle, male M12, M8 -Cable length (max for connecting to monitoring unit)
1000 m 100 m
1) Utilization category per DIN VDE 0660, Part 200, IEC 60947-5-1
2) With all release circuits loaded
Magnet Switch Monitoring Unit
Type 3SE6 806-2CD00
Standards EN 954-1, EN 1088Rated control supply voltage Uc DC 24 VRated control supply voltage tolerance 0.85 ... 1.2 x Us
Rated power(without signal outputs Y1 ... Y6) 3 WMaximum load current
• Signaling circuit Y1 ... Y6 20 mA• Signaling circuit 31, 32 2 AInputs 6 sensors (1 NO or 1 NC)Outputs 6 channel status circuits
• Automatic start 150 ms typical• Manual start 25 ms typicalRelease time 20 ms max.Recovery time 350 msDegree of protection acc. to IEC 60529 IP20Switching capacity 1)Release circuits (13, 14 and 23, 24)Continuous current, Ith 6 ARated operational current, Ie
2)• AC-15 @ 203 V 6 A• DC-13
- 24 V 6 A- 115 V 0.2 A- 230 V 0.1 A
Short circuit protection
• Fuse type DIAZED• Duty class
- gL(gC) 6 A- Quick response 10 A
Permissible ambient temperature, Tu
• Operating –25 to +45 °C• Storage –25 to +70 °C
3SE6 General data
Safety Systems—Safety IntegratedMagnet Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
3SE6 604-2BA magnetically operated switch with 3TK28 safety relay, Category 4 acc. to EN 954-1
Switch block connection
The specified switching position refers to the basic position when the cover, flap etc. is closed.
3SE6 604-2BA magnetically operated switch on AS-Interface Safety at Work, safe K45F or K60F compact module, Category 4 according to EN 954-1
Abbrevitions for color designation of the connecting leads acc. to IEC 60757:BK = black BN = brownBL = blue WH = white
Power A1+, L+ Us Sensors S73, S74 Channel 1+2, NO contact (parallel))lellarap( tcatnoc ON ,4+3 lennahC48S ,38S).tnoC(CD V 42-L ,-2A)lellarap( tcatnoc ON ,6+5 lennahC49S ,39Stcatnoc CN ,1 lennahC21S ,11SsrosneS
Two-hand operation consoles are required for use with ma-chines and systems that have hazardous areas, in order to di-rect both hands of the operator to one position.
Operation consoles are primarily used on presses, stamping ma-chines, printing presses and pa-per converting machines, in the chemical industry and in the rubber and plastics industries.
SpecificationsTwo-hand operation consoles fulfill the requirements laid down in DIN 24 980 and EN 574.
Construction
Equipment
All consoles are pre-equipped with SIGNUM 3SB3 control de-vices. The metal version is also available as an unequipped empty enclosure.
The plastic version can be retro-fitted with up to 8 command points, in line with the customer’s requirements. The surface of the console has premachined breaking points for this purpose.
Installation
The two-hand operation con-soles can be mounted either on the stand available or directly on the machine by means of the holes in the rear panel.
Principle of operation
The control command is given by pressing the two operating el-ements simultaneously (within
0.5 s of each other) and must be maintained for as long as a haz-ard exists.
Selection and ordering data
Dimension drawings
Design Order No. List Price $
Weightapprox.
1 unit kg
3SB38 63-4BB SIGUARD two-hand operation console
Degree of protection IP 65, acc. to DIN 24 980 (EN 574),
Standard equipment with 2 black operating elements (mushroom button 3SB30 00-1GA11, Ø 40 mm, 1 NO + 1 NC) and a red EMERGENCY-STOP mushroom button 3SB30 00-1HA20, latching Ø 40 mm, 2 NC
• Metal version
- with standard equipment 3SB38 63-4BB 400.00 2.650
- with standard equipment and 4 additional holes for control devices 22.5 mm
ApplicationHinge switches are used for monitoring and protecting hinged protection equipment such as doors and flaps. They fulfill the function of provid-ing protection against personal injury. The NC contacts are pos-itively opened in accordance with IEC 60 947-5-1.
3SE2 200The 3SE2 200 hinge switches with snap-action contacts 1 NO/1 NC with an angle of operation of either 5° or 15° make "Switch-off" and "Warning" possible for the first time without a time delay with a small opening angle.
3SE2 283The 3SE2 283 hinge switch is particularly suitable for use in the doors and flaps of machines that must be closed to ensure the safety of operating person-nel. Its thin profile and compact design allow it to be directly mounted on a hinged protective cover and the stable frame.
Construction
3SE2 2003SE2 200 hinge switches are available in a molded plastic en-closure acc. to EN 50 047 Switches designed for mounting on hinges must be attached di-rectly to the hinge and guaran-tee ensured cut-off, with a high level of security against manipu-lation, even with very small opening angles. The switch but-
ton can be rotated through 4 x 90° after the four screws are unscrewed.
3SE2 283The 3SE2 283 hinge switch has an integrated electromechanical switch block that is actuated when the hinged protective cover is opened. If the cover is only opened by 4°, the normally closed contact is positively
opened by a direct (not spring-action) mechanism. These posi-tively driven contacts guarantee interruption of the electric circuit and stopping of the machine. The normally open contact is closed when the cover is moved by 13.5° (for signing purposes only).
It is possible to directly connect selected limited, interlock and cable-operated switches via AS-Interface with safety-oriented communication. In these cases the selected switches directly connect to the AS-Interface yellow cable and do not have to be hard-wired separately. All switches with integrated AS-Interface connect directly to the AS-Interface line (yellow cable) via a vam-pire connection (FK connector).
3SF3 Limit Switches with Integrated AS-Interface
Limit switches convert the mechanical positions of moving ma-chine components into electrical signals. These electrical sig-nals are detected by the AS-Interface master and/or safety mon-itor and are transferred to a PLC or network for processing.
3SF3 Interlock Switches with Integrated AS-Interface
Interlock switches with separate actuator are used in applica-tions in which the position of doors covers or guards have to be monitored for safety reasons.
3SF3 Interlock Switches with Integrated AS-Interface
Interlock switches with separate actuator are used in applica-tions in which the position of doors, covers or guards have to be monitored for safety reasons.
Interlock switches with electrical and/or mechanical locking are special safety devices that prevent the inadvertent or intentional opening of protective doors, guards or other covers when a dan-gerous state exists. These types of interlock switches have two main tasks:• Enabling a machine when a protective device is closed or
locked; and,• Disabling a machine when a protective device is open
All 3SF interlock switches can only be switched using a coded actuator. It is virtually impossible to bypass it manually by using a tool.
3SF3 Cable-Operated Switches with Integrated AS-Interface
Cable-operated switches are used for monitoring or for EMER-GENCY STOP functions on particularly endangered systems sections. As the effective range of a cable-operated switch is only limited by the length of the cable, large systems can be pro-tected.
Cable-operated switches with latching for implementation in EMERGENCY STOP equipment correspond to the EN 418 stan-dard.
The safety contacts of the cable-operated switch with AS-Inter-face are positively driven.
06IC13_059-064.qxd 11/10/05 6:49 PM Page 13/64
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Selection and Ordering data
Positive opening acc. to IEC 60 947-5-1, Appendix K.1) Accessories, technical specifications, contact travel, switching diagrams and dimension drawings
can be found for the basic switch in this section.
Version Order No. Basic switch 1) List Price $
1 unit
WeightApprox.kg
General informationAll products of the Section AS-Interface position switches allow positive opening according to IEC 60 947-5-1, Appendix K
AS-Interface position switches, standardvia AS-Interface F adapter with direct AS-Interface connection to Safety at Work IP65
3SF3 200-6EV00-0BA1
• Encapsulated in molded plastic,EN 50 047, 31 mm wide, slow-action contact, two NC contacts
Positive opening acc. to IEC 60 947-5-1, Appendix K.
1) Accessories, technical specifications, contact travel, switching diagrams and dimension drawings. can be found for the basic switch in this section.
Version Order No. Basic switch 1) List Price $1 unit
WeightApprox.kg
AS-Interface position switch, standard, with M12 connector M12 connector for connecting an additional position switch Direct AS-Interface connection to Safety at Work can be used for up to Category 4 acc. to EN 954-1, IP65
3SF3 210-0DV00-0BA2
• Encapsulated in molded plastic, EN 50 047, 50 mm wide, slow-action contact, 1 NC contact- Rounded plungers - 3SF3 210-0CV00-0BA2 3SE2 210-0C 218.00 0.220
• With metal enclosure, fixing acc. to EN 50 041 3SF3 120-6XX00-0BA1 3SE2 120-6XX 210.00 0.440
Actuator for "AS-Interface position switch, with separate actuator"• For AS-Interface position switch, encapsulated in molded
plastic, 52 mm wide
htgnel/htdiw erusolcnEepyT
Standard (rmin = 150 mm) vvv 27 mm 3SX3 218 5.00 0.022Universal radius (rmin = 45mm) 33 mm 3SX3 228 12.00 0.025• For AS-Interface position switch metal enclosure,
mounting to EN 50 041htgnel/htdiw erusolcnEepyT
Standardv 79 mm 3SX3 197 13.00 0.027With transverse mounting 50 mm 3SX3 206 13.00 0.025With vertical mounting 50 mm 3SX3 306 13.00 0.025Universal radius 80 mm 3SX3 203 77.00 0.118
2)
2) Discount Code: Limit Switches.
06IC13_065-068.qxd 2/18/06 1:51 PM Page 13/66
13/67
3SF Interlock switches
Safety Systems—Safety SwitchesSwitches with Integrated AS-Interface
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Positive opening acc. to IEC 60 947-5-1, Appendix K.1) Accessories, technical specifications, contact travel, switching diagrams and dimension drawings
can be found for the basic switch in this section.
Version Order No. Basic switch 1) List Price $1 unit
Weightapproxkg
3SF3 257-6XX00-0BA2
AS interface position switch, with separate actuator and M12 connectorM12 connector for connecting an additional position switchDirect AS-Interface connection to Safety at WorkCan be used for up to Category 4 acc. to EN 954-1IP65Slow-action contact, 1 NC contactEncapsulated in molded plasticLateral and front operation, 52 mm wide
• Extraction force 30 N 3SF3 257-6XX00-0BA2 3SE2 257-6XX 210.00 0.230
• Extraction force 5 N 3SF3 257-6XX40-0BA2 3SE2 257-6XX40 210.00 0.255
Actuator for "AS-Interface position switch, with separate actuator and M12 plug"
Type Enclosure width/length
Standard (rmin = 150 mm)
27 mm 3SX3 218 5.00 0.022
Universal radius(rmin = 45 mm)
33 mm 3SX3 228 12.00 0.025
3SF3 750-6XX00-0BA1
3SF3 830-6XX00-0BA1
AS-Interface position switch, with separate actuator and tumblerWith direct AS-Interface connection to Safety at WorkIP65, Pg 13.5Solenoid voltage 24 V DCMonitoring of actuator and solenoid position
• Plastic enclosure
- Locking force 1200 N, spring-locked 3SF3 760-6XX00-0BA1 3SE3 760-6XX00 400.00 0.600
- Locking force 1200 N, solenoid-locked 3SF3 750-6XX00-0BA1 3SE3 750-6XX00 400.00 0.625
• Metal enclosure
- Locking force 1200 N, spring-locked 3SF3 860-6XX00-0BA1 3SE3 860-6XX00 450.00 0.800
- Locking force 1200 N, solenoid-locked 3SF3 850-6XX00-0BA1 3SE3 850-6XX00 450.00 0.970
- Locking force 2000 N, spring-locked 3SF3 840-6XX00-0BA1 3SE3 840-6XX00 525.00 1.105
- Locking force 2000 N, solenoid-locked 3SF3 830-6XX00-0BA1 3SE3 830-6XX00 525.00 1.075
Actuator for "AS-Interface position switch, with separate actuator and tumbler"
Position switch type Actuator type
Enclosure width/length
Plastic enclosure, metal enclosure 1200 N
Standard 3SX3 252 13.00 0.035
With transverse fixing
3SX3 253 13.00 0.030
Radius 3SX3 254 16.00 0.025
Metal enclosure 2000 N Standard 79 mm 3SX3 197 13.00 0.027
Standard, for approach from the left
132 mm 3SX3 207 14.00 0.045
Standard, with transverse mounting
50 mm 3SX3 206 13.00 0.025
Standard, withvertical mounting
50 mm 3SX3 306 13.00 0.025
Universal radius 80 mm 3SX3 203 77.00 0.118
06IC13_065-068.qxd 2/18/06 1:52 PM Page 13/67
13/68
3SF Cable-operated switches
Safety Systems—Safety IntegratedSwitches with Integrated Safety
Siemens Energy & Automation, Inc.Industrial Controls Catalog
1) Accessories, technical specifications, contact travel, switching diagrams and dimension drawings can be found for the basic switch in this section.
2) Positive opening acc. to IEC 60 947-5-1, Appendix K
Version Order No. Basic switch 1) List Price $1 unit
Weightapprox.kg
General informationAll products of the Section AS-Interface cable-operated switches allow positive open-ing according to IEC 60 947-5-1, Appendix K
AS-Interface cable-operated switcheswith direct AS-Interface connection to Safety at WorkMetal housing with dust protectionCan be used up to category 4 acc. to EN 954-1IP65Latching acc. to EN 418Pushbutton unlatching2 NC contacts 2)
• For cable lengths up to 10 m, with adjustment window
3SF2 120-1BF00-0BA1 3SE7 120-1BF00 353.00 0.620
• For cable lengths up to 25 m, with adjustment window
3SF2 150-1BF00-0BA1 3SE7 150-1BF00 361.00 0.630
• For cable lengths up to 50 m 3SF2 140-1BF00-0BA1 3SE7 140-1BF00 654.00 0.917
• UL Listed, CSA Certified, CE. Meets or exceeds other local and international standards
• Miniature (31mm) or wide miniature (50 mm) housings. Best suited in limited space applications
• Nine field interchangeable operating heads (12 variations). Interchangeable on the miniature (31 mm) and wide miniature (50 mm) styles. Reduces inventory and inventory costs
• Direct opening action (positive opening of the NC contact)
• NEMA A600, Q600 contact ratings
• Designed to EN 50047 and EN 50041 standards. True international acceptance
ApplicationThe function of position switches (limit switches) is to produce electrical signals corresponding to the positions of moving ma-chinery.The units are suitable for use in virtually any climate.The 3SE2 200 and 3SE2 210 po-sition switches with the excep-tion of types 3SE2 2.0-8. are also suitable in accordance with cer-tificate of conformity BVS No.
89.B. 1015 for EEx zones (po-tentially explosive atmosphere) according to EEx ia I.
SpecificationsIEC 60 947-5-1, or EN 60947-5-1The safety requirements of "total insulation" are guaranteed by the use of plastic for the enclo-sure and molded plastic scew glands.3SE2 200 and 3SE2 210 position switches with molded plastic en-closures comply with the acci-
dent prevention guidelines of the Swiss Accident Insurance Authority (SUVA). The following actuator types have been approved:• Plain plunger –. B• Overtravel plunger –. C• Roller plunger –. D• Roller lever –. E• Angular roller lever –. F• Roller crank –. G• Overtr. plunger M 18 × 1 –. L• Roller plunger M 18 × 1 –.M
Safety position switches3SE22 switches can be used as safety position switches in con-trol systems conforming to IEC 60 204-1, or EN 60204-1.For implementation as safety po-sition switches and/or position switches with a safety function, the devices must be mounted at a spacing of 20 mm (30 mm) and the switch must be locked with a pin or fitted with a stop.
Design
3SE2 limit switches meet or exceed the requirements of NEMA, EEMAC, UL, CSA, IEC, VDE and other local, national & international standards.The switch housing consists of a glass-reinforced fiber, flame- retardant molded plastic which is resistant to most shocks, impacts and cutting oils. The cover is captive to the switch body. The threaded cable entry is M20 × 1.5 and may be converted to 1/2”-NPT via a separately provided adaptor (3SX9918 or 3SX1998). The body
has longitudinal holes, permitting mounting with M4 screws. Housing size and mounting dimensions conform to EN 50 041 or EN 50 047. The molded housing does not require grounding. The housing is protected against the penetration of dust and water jets coming from virtually any direction. The contacts are pressed into the switch body. When the cover is opened, the switching chamber is protect by a guard preventing the ingress of contaminates.
ContactsPosition switches (limit switches) are available with snap-action contacts, slow-action contacts or slow-action make-before-break contacts.The movable normally closed and normally open switch contacts are electrically isolated from each other and are suitable for switching voltages of different potentials.The contact blocks for 3SE2230 series are field replaceable and are the same contact blocks used in the 3SE2100, 3SE2120, and 3SE3170 metal series.
Contact reliabilityThe movable switch contacts are double moving contacts. This increases the contact reliability even when the switch has to be operated with low voltages and currents, e. g. DC 5 V/1 mA. The switching point of the snap action contacts is independent of the switching speed.
Principle of operation
Positive opening
The NC contacts of the switch are forced open mechanically, positively-driven and reliably by the plunger (positive opening).
In order to ensure this positive opening, the position switch must be actuated in such a way that the values specified for pos-itive opening under nominal travel (Pages 13/76 to 13/80)have been definitely exceeded.
Position switches that display this symbol are suitable for use in safety applications.
• for AC-15 duty 0.5 ×106 operating cycles when interrupting Ie / AC-15 at 230 V
• for DC-13 duty With DC the contact endurance depends not only on the breaking current but also on the voltage, the circuit inductance and the speed of switching. No generally valid information can be given.
Operating frequency 6 ×10³ operating cycles per hour with 3RH11, 3RT10 16, to 3RT10 26 contactors
Operating accuracy 0.05 mm for repeated switching, measured at the plunger of the switch block.
Operating point with snap-action contacts independent of contact wear constant throughout the life of the switch
Ambient temperature –30 to +85 °C (-22 °F to 185 °F)
Degree of protection DIN VDE 0470 and IEC 60 529 IP 67 (IP 66 for 3SE. 230)
Cable entry
• 3SE2 200, 3SE2 230 M 20 × 1.5
• 3SE2 210 2 × (M 20 × 1.5)
Conductor cross-sections
• solid 2 × 2.5 mm² (2 × 14 AWG)
• finely stranded with end sleeve 2 × 1.5 mm² (2 × 16 AWG)
3SE2 200 / 3SE2 210Molded plastic enclosure, 31 and 50 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Discount Code: Limit Switches SiemIndus
Siemens / Industrial Controls Previous folio:
Positive opening acc. to IEC 60 947-5-1, Appendix K.
1) The actuator heads can be subsequently exchanged (see Page 13/75).
2) For conduit thread adaptors see page 13/97.
3) Switch body with contact block. All operating heads fit on these switch bodies.
Selection and ordering data2 contacts · Moving double break contacts · IP 67 degree of protection · EN 50 047 · Special width 50 mm ·M20 x 1.5 connecting thread
For operation, operating speed and travel, see Pages 13/76 to 13/80.
31 mm wide 50 mm wide 2) Actuator design to EN 50 047
Enclosure width
3SE. position switches 3SE. position switches Weightapprox.with 2 slow-action contacts with 2 slow-action make-before-
2 contacts · Moving double break contacts · IP 66 degree of protection · EN 50 041 · M20 x 1.5 connecting thread
The switch has the same construction as the 3SE2 120-.. metal-enclosed switch detailed on Pages 13/87 to 13/91. For operation, operating speed and travel or angle see Pages 13/100 to 13/105.
3SE. position switches 3SE. position switches 3SE. position switches Weightapprox.
40 mm wide 2) with 2 slow-action contacts with 2 slow-action contacts with 2 slow-action contacts
• UL Listed, CSA Certified, CE. Meets or exceeds most local, national and international standards.
• Standard (40 mm) or Wide (56 mm) die-cast aluminum housing. Offers increased wiring space, additional cable
entry options and corrosion resistant housing
• Standard (40 mm) offerings can accomodate both U.S. 29.4 [1.16] × 59.5 [2.34] and DIN 30 [1.18] × 60 [2.36] mounting dimensions
• Nine field interchangeable operating heads (12 variations). Interchangeable on both the standard (40 mm) and wide (56 mm) styles. Reduces inventory and inventory costs
• Field replaceable, electrically isolated, double bridge
contacts. Provides electrical flexibility and ease of maintenance
• Direct opening action (positive opening) of the NC contact
• NEMA A600, Q600 contact ratings
ApplicationThe function of position switches (limit switches) is to produce electrical signals corresponding to the positions of moving ma-chinery.The units are suitable for use in virtually any climate.
SpecificationsIEC 60 947-5-1.
The 3SE2 100 and 3SE2 120 po-sition switches correspond to Swiss regulations (SUVA). The following actuator types have been approved:
• Plunger –. B• Overtravel plunger –. C• Roller plunger –. D• Roller lever –. E• Angular roller lever –. F• Roller crank –. GWIn addition, the open-type 3SE3 position switches and the 3SE3 switch inserts are also permit-ted.
Safety position switchesThe 3SE. position switches with metal enclosures and snap-ac-tion contacts as well as devices with slow-action contacts can be used as safety position switches in control systems conforming to EN 60 204-1, or IEC 60 204-1.
Construction3SE position switches are avail-able in die-cast standard (40 mm) or wide (50 mm) aluminum enclosures or as open-type units.The 3SE2 120/3SE3 170 position switches with standard enclo-sure, overtravel plunger, roller plunger, rod and roller crank ac-tuators, conform to EN 50 041. These specifications define the most important mounting dimen-sions, operating points, enclo-sure types and actuator types.Position switches have one or three cable entries. The cable entry has a 1/2”-NPT (3SE3) or M20 x 1.5 (3SE2) threaded metal wire opening. (see also Accessories, Page 13/97)
ActuatorsAll actuators can be retro-fitted or exchanged for another ver-sion. They can also be reposi-tioned every 90° so that the switches can be operated from any of the four sides.• The position switches with
roller lever are approached perpendicular to the plunger axis and position switches with angular roller lever are ap-proached in parallel with the plunger axis.
• The roller crank actuators, ad-justable-length roller crank actu-ators and rod actuators can be operated from both sides and be positioned from 10° to 10° on the actuating spindle. The roll-ers of the actuators are made from wear resistant plastic.
• The wobble spring can be ap-proached from any direction.
• The forked lever actuator has two defined switching posi-tions. The actuating element causes changeover from one position to the other. This actu-ator is suitable for two-channel operation.
The open-type 3SE. position switches are available exclu-sively with a plunger actuator.Important: The 3SE. position switches with metal enclosure are not permit-ted to be used as stops.
ContactsThe position switches (limit switches) are available with snap-action contacts, slow-ac-tion contacts or slow-action make-before-break contacts.
The 3SE. position switches with a metal enclosure are available with 2, 3 or 4 contacts.The movable normally closed and normally open switch con-tacts are electrically isolated from each other and are suitable for switching voltages of differ-ent potentials.
Contact reliabilityThe movable switch contacts are double moving contacts. This increases the contact reli-ability even when the switch has to be operated with low voltages and currents, e. g. DC 5 V/1 mA.The switching point of the snap action contacts is independent of the switching speed.The contact chamber is covered to prevent ingress of foreign bodies.
Principle of operation
Positive opening
The opening contacts of the switch are forced open mechan-ically, positively-driven and reli-ably by the plunger (positive-opening).
In order to ensure this positive opening, the position switch must be actuated in such a way that the nominal travel (Pages 13/100 to 13/112) and angle for the positive opening are sub-stantially exceeded.
Position switches that display this symbol are suitable for use in safety applications.
06IC13_083-088.qxd 10/31/05 3:42 PM Page 13/85
SiemIndus
13/86
3SE2 100 to 3SE3 170 / 3SE2 303 / 3SE2 404Metal enclosure and open type, 40 and 56 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
1) Without any welding acc. to DIN VDE 0660 Part 200.
2) 3SE21.0 - and 3SE3170 - 8..00: 0.27A
3) 3SE21.0 - and 3SE3170 - 8..00: 0.10A
4) Refer to Section 19, General Infor-mation for NEMA Control and Circuit Ratings.
s, u and U ratings (with metal enclosure)
• rated voltage AC 600 V
• continuous current 10 A
• switching capacity Heavy Duty, A 600/Q 600
- for 3SE. ...–8. Heavy Duty, A 300/Q 30
Rated insulation voltage Ui 500 V
Pollution degree Class 3
Short circuit protection1), DIAZED-fuse links Utilization category gL/gG 6 A, quick response characteristic 10 A
Rated operational voltage Ue AC 500 V, over 300 V only for equal potential (3SE21.0-and 35E3170-8..00) AC 500 V, over AC 380 V only for equal potential
Electrical endurance 10 ×106 operating cycles with 3RH11, 3RT10 16, 3RT10 17, 3RT10 24 to 3RT10 26 (3TH4, 3TF40 to 3TF43) contactors
• for AC-15 duty 0.5 ×106 operating cycles when interrupting Ie / AC-15 at 230 V
• for DC-13 duty With DC the contact endurance depends not only on the breaking current but also on the voltage, the circuit inductance and the speed of switching. No generally valid information can be given.
Operating frequency 6 ×10³ operating cycles per hour with 3RH11, 3RT10 16, 3RT10 17, 3RT10 24 to 3RT10 26 (3TH4, 3TF40 to 3TF43) contactors
Operating accuracy 0.05 mm for repeated switching, measured at the plunger of the switch block.
Operating point With snap-action contacts independent of contact wear constant throughout the life of the switch
Ambient temperature –30 to +85 °C (-22 to +185°F)
Degree of protection DIN VDE 0470 and IEC 60 529
• with metal enclosure IP 67
• open-type IP 20 (terminals), IP 40 (switching chamber)
• electrical plug and socket connection IP 65
Enclosure cable entry 1 × 1/2”-NPT (3SE3); 1 x M 20 × 1.5 (3SE212) or 3 x M20 x 1.5 (3SE2100, 2303, 2404)
Conductor cross-sections
• solid 2 × 2.5 mm² (2 × 14 AWG)
• finely stranded with end sleeve 2 × 1.5 mm² (2 × 16 AWG)
Installation angle Any
Enclosure material Metal (GD – AlSi 12)
Protective conductor terminal M 3.5 inside enclosure
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3SE2 100 to 3SE3 170Metal enclosure, 40 and 56 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Switch Bodies with replaceable contact block without operating head
3SE2100, 3SE2120, 3SE2230 and 3SE3170 limit switches with field replaceable contact blocks may be provided as complete devices; or, separately as components; switch body, operating head and lever (if applicable).Switch Bodies are complete except for the operating head and lever (if applicable). The contact blocks are field replaceable and have a molded plastic housing in which the fixed contacts and the terminals are located.Operating Heads include the necessary hardware to mount to the selected Switch Body and may require an Operating Lever.
Plunger, Overtravel Plunger, Roller Plunger, Roller Lever, Angular Roller Lever and Wob-ble Spring operating heads are complete so only a Switch Body is required.Side rotary operating heads such as Roller Crank, Adjustable Roller Crank, Fork Lever and Rod Actuator require a side rotary Oper-ating Head and a suitable Lever. Therefore three parts are required for a complete switch; Switch Body, Operating Head, suitable Lever.
Operating heads for the 3SE2100, 3SE2120 and 3SE3170 series are interchangeable with each other and the various contact con-figurations. The same operating heads are also used in the 3SE2303 and 3SE2404 se-ries. These switches are not available in parts.Operating heads for the 3SE2230 series are interchangeable with the various contact configurations and may also require a lever (side rotary operating head).
Metal Housing40 mm 1) 56 mm1)
Molded Plastic Housing40 mm2)
3SE2 1203SE3 170
3SE2 100 3SE2 230
Contact Arrangement
1 NO + 1 NCSlow-action
1 NO + 1 NCSnap-action
1 NO + 1 NC,Slow-action
Make-Before-Break2 NC
Slow-action2 NO
Slow-action2 NC
Snap-action
Order No.
List Price $1 Unit
WeightApprox.
kg Order No.
List Price $1 Unit
WeightApprox.
kg Order No.
List Price $1 Unit
WeightApprox.
kg Order No.
List Price $1 Unit
WeightApprox.
kg Order No.
List Price $1 Unit
WeightApprox.
kg Order No.
List Price $1 Unit
WeightApprox.
kg
56 mm Wide Metal Housing with M20 x 1.5 Threaded Opening
4 contacts · Wide enclosure · Moving double-break contacts · Degree of protection IP 67 · M20 x 1.5 connecting thread
For operation, operating speed and travel, see Pages 13/100 to 13/105.
3SE. position switches 3SE. position switches 3SE. position switches Wghtapprox.56 mm wide 2) with 4 snap-action contacts with 4 slow-action contacts with 4 slow-action make before-
2 contacts · Moving double break contacts · Degree of protection: Terminals IP 20, switching chamber IP 40Tandem arrangement (2 × 2 contacts) is possible when 3SY3 121 adapter is used (see accessories below).
For operation, operating speed and travel, see Page 13/112.
Internal circuit diagram
Order No. List Price $
Weightapprox.
Nominal travel and related terminals Minimum force required along plunger axis
Term. design. acc. to EN 50 013
0-line
***
commencement of plunger travelcontact closedcontact openoperating point on returnpositive opening acc. to IEC 60 947-5-1-3
Preferred type 1 unit kg along plunger axis perpend. to plunger axis α = 30°
Operation, operating speed and travel or angle of actuators
2 contacts · Standard and wide enclosure
Bars, cams, stops, etc. are used as actuating devices. The shape of the actuating device must pro-vide the given angles for the leading and trailing edges.
For operation from the side, sparingly greased steel, POM (polyoxymethylene or polyace-tal) or PA (polyamide) should be used as cam and bar material.
Operating speed along plunger axis
The actuating speed in the case of position switches with slow-action contacts is not permitted
to go lower than 15 mm/s for DC and 1 mm/s for AC. Position switches with snap-action con-tacts should be used when the speeds are lower.
3SE2 404 position switches · 4 contacts · Wide enclosure
The data for operation, operat-ing speed, travel and angle of operation is the same as for the
position switches with 2 switch blocks.
Two switch blocks with 2 con-tacts are used for position switches with 4 contacts.
Operation by a bar Switch blocks Nominal traveland related terminals
Switch blocks Nominal traveland related terminals
vmax0-lineH→
operating pt acc. to EN 50 041max. operating speedref. line acc. to EN 50 041travel differencedirection of operation
Terminal designation acc. to EN 50 013
0-lineS
***
reference line acc. to EN 50 041travel acc. to EN 50 041contact closedcontact openoperating point on returnpositive opening acc. to IEC 60 947-5-1-3
Plunger along plunger axis perpendicular to plunger axis along plunger axis
3SE2 100–.B, 3SE. 1@0–.B,3SE2 404–.B
vmax. = 1.5 m/s
vmax. = 0.5 m/s
Minimum force required in direction of operation: 12 N
Slow-action contacts
1 NC + 1 NO
3SE3 000–0A, 3SE3 010–0A, Ident. No. 11
2 NC
3SE3 000–6A, Ident. No. 02
1 NO + 1 NC with make-before-break
3SE3 000–3A, 3SE3 010–3A, Ident. No. 11
2 NO
3SE3 000–7A, Ident. No. 20
Snap-action contacts
1 NC + 1 NO
3SE3 000–1A, 3SE3 010–1A, Ident. No. 11
2 NC
3SE3 000–1AV00, 3SE3 010–1AV00Ident. No. 02
17 25
18 26
41000C
SN
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3SE2 100 to 3SE3 170 / 3SE2 230 / 3SE2 404Metal enclosure, 40 and 56 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Operation, operating speed and travel or angle of actuators
2 or 4 contacts · Standard and wide enclosure
Operation by a bar Switch blocks Nominal traveland related terminals
Switch blocks Nominal traveland related terminals
αβvmax0-lineSH→
operating pt acc. to EN 50 041approach angletrailing anglemax. operating speedreference line acc. to EN 50 041travel acc. to EN 50 041travel differencedirection of operation
Terminal designation acc. to EN 50 013
0-lineS
***
ref. line acc. to EN 50 041travel acc. to EN 50 041contact closedcontact openoperating point on returnpositive opening to IEC 60 947-5-1-3
Roller crank, type A perpendicular to pl ucidneprepsixa regnu lar to plunger axis
repositionable and finely adjustable from 10° to 10°3SE2 100–.GW, 3SE. 1@0–.GW, 3SE2 230–.GW, 3SE2 404–.GW
vmax. = 3 m/sMinimum torque required in direction of operation: 25 NcmIn special designs, contacts can only be operated from right or left. By twisting the plunger from the right and left.
Slow-action contacts
1 NC + 1 NO
3SE3 000–0A, 3SE3 010–0A, Ident. No. 11
2 NC
3SE3 000–6A, Ident. No. 02
1 NO + 1 NC With make-bef.-break
3SE3 000–3A, 3SE3 010–3A, Ident. No. 11
2 NO
3SE3 000–7A, Ident. No. 20
Snap-action contacts
1 NC + 1 NO
3SE3 000–1A, 3SE3 010–1A, Ident. No. 11
2 NC
3SE3 000–1AV00,3SE3 010–1AV00, Ident. No. 02
Roller crank, adjustable length Deflection in direction of rotation Deflection in direction of rotation
finely adjustable from 10° to 10°3SE2 100–.UW, 3SE. 1@0–.UW, 3SE2 230–.U, 3SE2 404–.UW
vmax. = 1 m/s, αmax = 30°, βmax = 30°Minimum torque required in direction of operation: 25 NcmContact operation either from right or left or from right and left.
Slow-action contacts
1 NC + 1 NO
3SE3 000–0A, 3SE3 010–0A, Ident. No. 11
2 NC
3SE3 000–6A, Ident. No. 02
1 NO + 1 NC With make-bef.-break
3SE3 000–3A, 3SE3 010–3A, Ident. No. 11
2 NO
3SE3 000–7A, Ident. No. 20
Snap-action contacts
1 NC + 1 NO
3SE3 000–1A, 3SE3 010–1A, Ident. No. 11
2 NC
3SE3 000–1AV00,3SE3 010–1AV00, Ident. No. 02
1) Max. operating angle 70°.
Standard
17 25
18 26
41000C
SN
Standard
17 25
18 26
41000C
SN
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3SE2 100 to 3SE3 170 / 3SE2 230 / 3SE2 404Metal enclosure, 40 and 56 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Operation, operating speed and travel or angle of actuators
3 contacts · Wide enclosure
Operation by a bar Switch blocks Nominal traveland related terminals
Minimum force required in direction of operation
vmax0-lineH
operating pt acc. to EN 50 041approach angletrailing angleapproach anglemax. operating speedreference line acc. to EN 50 041travel differencedirection of operation
Terminal designation acc. to EN 50 013
0-lineS
**
reference line acc. to EN 50 041travel acc. to EN 50 041contact closedcontact openpositive opening to IEC 60 947-5-1-3
Roller lever Slow-action contacts perpendicular to plunger axis
3SE2 303–.E
For operation perpendicular to plunger axis :vmax. = 1 m/s at max = 30°vmax. = 2.5 m/s at max = 45°
max = 45°
For operation along plunger axis: vmax. = 1.5 m/s
1 NO + 2 NC
Ident. No. 12
15 N
2 NO + 1 NC
Ident. No. 21
17 N
1 NO + 2 NCmake-before-break
Ident. No. 12
15 N
2 NO + 1 NCmake-before-break
Ident. No. 21
17 N
Angular roller lever Slow-action contacts along plunger axis
3SE2 303–.F
For operation along plunger axis:vmax. = 1 m/s at max = 30°vmax. = 2.5 m/s at max = 45°vmax. = 2.5 m/s at max = 45°
1 NO + 2 NC
Ident. No. 12
15 N
2 NO + 1 NC
Ident. No. 21
17 N
1 NO + 2 NCmake-before-break
Ident. No. 12
15 N
2 NO + 1 NCmake-before-break
Ident. No. 21
17 N
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3SE2 303Metal enclosure, 56 mm width
3SE International Limit SwitchesPosition Switches
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Operation, operating speed and travel or angle of actuators
3 contacts · Wide enclosure
3SE3 020 and 3SE3 023 open-type position switches 2 and 3 contacts · Moving double break contacts · Degree of protection: Terminals IP 20, switching chamber IP 40
Operation by a bar Switch blocks Nominal traveland related terminals
Minimum force required in direction of rotationvmax
0-line→
operating pt acc. to EN 50 041max. operating speedreference line acc. to EN 50 041direction of operation
Terminal designation acc. to EN 50 013
0-lineS
**
reference line acc. to EN 50 041travel acc. to EN 50 041contact closedcontact openpositive opening to IEC 60 947-5-1-3
Rod actuator Slow-action contacts Deflection in direction of rotation
finely adjustable from 10° to 10°
3SE2 303–.WW, 3SE2 303–.VW
vmax. = 3 m/s
In special designs contacts can only be operated from right or left. By twisting the plunger from the right and left.
OverviewIn harsh industrial environments and in installations with limited space, the small 3SE3 160 and 3SE3 180 compact switches are ideal. The switches are already equipped with a molded cable of 2 m in length and can therefore be installed in the smallest spaces.
Both the housing and the actua-tor head are made of metal and therefore meet the high IP 67 de-gree of protection. Various actu-ator heads, in the form of roller plungers, overtravel plungers and roller cranks, are available.
They can be fitted alternatively with snap-action contacts. 1 NO + 1 NC. The NC contact complies with the requirements for positive opening according to IEC 60 947-5-1.The 3SE3 1 position switch with molded cable is available in dif-ferent sizes:
• The 3SE3 180 series complies with the EU standard and fea-tures a 30 mm wide enclosure with drilled holes at a spacing of 20 mm.
• The 3SE3 160 series meets the requirements of the US market and features a 40 mm wide en-closure with drilled holes at a spacing of 25 mm.
Technical data
Selection and ordering data
2 contacts · Degree of protection IP 67
Switch blocks and travel
Switching frequency noitcetorp fo eergeDnim/03 IP 67Rated insulation voltage Ui gninepo tcatnoCV 005 2 x 1.25 mmPollution degree deeps gnitarepO3 ssalC
up to 80% operating distanceConventional thermal current Ith .C.-0.1 3ES3•A 01 ≤ 1 m/sAmbient temperature .D.-0.1 3ES3•C° 58+ ot 03– Vertical ≤ 1 m/sMechanical endurance 10 × 106 operations Lateral ≤ 0.5 m/sElectrical endurance .G.-0.1 3ES3•snoitarepo 000005 ≤ 1.5 m/sConnecting cable (2 m) PVC-5 x 0.75 mm² (18 AWG);
3.Stepped Terminals On Single Pole; Deep Center Trough On Double Pole.
• NEMA Type 6P Submersible1.Completely Sealed With
Epoxy.2.STOOW-A Cable or
Prewired Receptacle With Pin Connector.
DesignModular Plug-In HousingThese heavy duty plug-in limit switches may be provided as complete devices using a composite catalog number; or, separately as components; operating head, plug-in module and base receptacle.Example:Complete Switch:3SE03-AR1
Single Pole, Double Throw contacts with Side Rotary, Momentary Head
Components3SE03-SA
Single Pole, Double Throw Plug-in Module
3SE03-DR1Side Rotary Head, Momentary
3SE03-RAStandard, Single Pole Receptacle, 1 NO + 1 NC
Since components may be interchanged, operating heads, plug-in modules and receptacles may be combined to satisfy most of your everyday limit switch requirements. This leads to less inventory with greater flexibility.Operating heads include side rotary; plain and roller plunger; and, wobble. A variety of levers are available.The die-cast housing has an epoxy finish to protect against corrosion. All screws on the module and head are captive.
NEMA Type 6P SubmersibleThese heavy duty prewired, factory sealed switches meet the demanding enclosure requirements of UL (NEMA) Type 3, 4, 4X, 6P, 11, 12, and 13. They are intended for wet environments where the integrity of the threaded conduit and switch body seals must be assured.The switch body cavity including threaded conduit entry is completely sealed with epoxy. An 8 foot, 5 or 9 conductor STOOW-A cable; or 5 or 9 pin prewired receptacle with pin connector is provided as standard.Switches are provided as complete devices using composite catalog numbers; or, separately as components; operating head and switch body.UL (NEMA) Type 6P switches are designed to provide a degree of protection against the entry of water during prolonged submersion at limited depths (tested with a 6 foot head of water for 24 hours).Both the Modular Plug-in and the (NEMA) Type 6P Submersible styles provide 60 Amp make and 6 Amp break—120V AC and 10 Amp continuous current for 120, 240, 480 and 600V AC. The circuit contact configuration depends on the device selected and the application criteria.Switches are available with momentary or maintained operating heads; and, single pole, double pole or center neutral (modular, plug-in only) contact configurations.3SE03 limit switches offer a new standard of reliability and quality in automatic control circuits under heavy duty applications.
Plug-in module andreceptacle are keyed.
Pre-wired receptacle with pin connector
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Non-safetyModular, plug-in and NEMA type 6P submersible
3SE03 North American Limit SwitchesSpecifications
Siemens Energy & Automation, Inc.Industrial Controls Catalog
1) Temperature ranges below +32°F (0°C) are based on absence of freezing moisture or water.
2) For temperature rating of specific switch, refer to page 13/122, Operating Heads.
Type Modular, Plug-in and NEMA Type 6P Submersible
Mechanical life
Electrical life
Side rotary: 13 x 106 make-break operations minimumAll others: 10 x 106 make-break operations minimumSingle Pole: 1 x 106 operations typical at full loadDouble Pole: 1 x 105 operations typical at full load
Switching frequencyOperating point accuracy
Cable entry
8 x 103 make-break operations per hour (maximum)Side operated: 0.0012 in. (modular, plug-in housing)Side rotary: 0.0014 in. (modular plug-in). Top operated: 0.003 in. (modular, plug-in housing)1/2 in.-NPT, Prewired Cable or Prewired Receptacle with Pin Connector
Ambient temperature
Degree of protection
Without Cable: –10° to +121°C, 14° to 250°FWith Cable: –10° to +105°C, 14° to 221°FNEMA Type 1, 3, 3S, 4, 4X, 6, 6P, 11, 13; IP67
Conductor size
MountingTightening Torque
22–12 AWG (modular, plug-in housing)5 or 9 conductor, 16 AWG yellow jacketed type STOOW-A cable STOOW-A (prewired cable)5 or 9 pin, 0.87 in. (22 mm) diameter receptacle (prewired receptacle with pin connector)Any positionSwitch body screws: 25–30 lb-in.Operating head screws: 14–18 lb-in.
NEMA ratingDC,NEMA R300
AC,NEMA A600
Maximum current at 125V 250V 120V 240V 480V 600V
MakeBreak
Max. volt-ampereMakeBreak
0.22A0.22A
28VA28VA
0.11A0.11A
28VA28VA
60A6A
7200VA720VA
30A3A
7200VA720VA
15A1.5A
7200VA720VA
12A1.2A
7200VA720VA
Rated thermal currentRated operating voltage
DC, 1ADC, 300V
AC, 10AAC, 600V
Temperature rating
Operation Temperature range
Type Return Without cable With cable
1 Side rotaryMomentary CW onlyor CCW only
10°F to 250°F-12°C to 121°C
10°F to 221°F-12°C to 105°C
2
Center neutralSide rotarySide plungerTwo-sided plungerRoller side plunger
Momentary CW or CCWMaintainedMomentaryMaintainedMomentary
14°F to 200°F-10°C to 94°C
14°F to 200°F-10°C to 94°C
3Top plungerTop roller plungerWobble head
MomentaryMomentaryMomentary
14°F to 250°F-10°C to 121°C
14°F to 221°F-10°C to 105°C
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Complete switches without lever - threaded cable entry:
5° pretravel to operate contacts. 15° pretravel to operate contacts.
Plug-In module type
Standard single pole1 NO + 1 NC(3SE03-SA)
Standard double pole2 NO + 2 NC(3SE03-SB)
Receptacle typesurface mount
Single pole(3SE03-RA)
Double pole(3SE03-RB)
Operating head type
Composite catalog number consisting of head, module and receptacle
Catalog NumberList Price $ 1 unit Catalog Number
List Price $ 1 unit
Side rotaryCW and CCW operation convertible to CW only or CCW only
Standard momentary (3SE03-DR1)
3SE03-AR1 111.00 3SE03-BR1 135.00
Standard maintained (3SE03-DM1)
3SE03-AM1 137.00 3SE03-BM1 161.00
Low torqued momentary (3SE03-DL1)
3SE03-AL1 124.00 3SE03-BL1 148.00
Plain side plunger
Momentary(3SE03-DS1)
3SE03-AS1 129.00 3SE03-BS1 153.00
Roller side plunger
Momentary(3SE03-DS3)
3SE03-AS3 143.00 3SE03-BS3 167.00
Two-sided plunger
Maintained(3SE03-DH1)
3SE03-AH1 149.00 3SE03-BH1 172.00
Plain top plunger
Momentary(3SE03-DT1)
3SE03-AT1 122.00 3SE03-BT1 145.00
Roller top plunger
Momentary(3SE03-DT3)
3SE03-AT3 136.00 3SE03-BT3 160.00
Wobble head (without lever)
Momentary(3SE03-DW1)
3SE03-AW1 117.00 3SE03-BW1 141.00
Plug-In module type
Center neutralDouble pole2 NO + 2 NC(3SE03-SN)
Receptacle typesurface mount
Center neutral(3SE03-RB)
Composite catalog numberconsisting of head, module and receptacle
Operating head type Catalog NumberList Price $ 1 unit
Side rotary (momentary)
CenterNeutral
(3SE03-DN1)(3SE03-DN2)
3SE03-NN13SE03-NN2
144.00144.00
CW CCW
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Non-safetyModular, plug-in metal housing
3SE03 North American Limit SwitchesSelection
Siemens Energy & Automation, Inc.Industrial Controls Catalog
For use with 3SE03-DN1, -DN2 operating heads and 3SE03-RB receptacle only.
For use with modular, Plug-in and NEMA Type 6P.
Refer to “Operating Temperature”, Catalog page 13/118 for Temperature Ranges.Without Operating Levers.CW and CCW operation. Convertible to CW or CCW op-eration only.
Convertible—Horizontal to Vertical.Requires Lever.For use with 3SE03-SN plug-in module only.
_
_
_
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Non-safetyModular, plug-in metal housing
3SE03 North American Limit SwitchesSelection
Siemens Energy & Automation, Inc.Industrial Controls Catalog
All dimensions shown in inches and (millimeters). For reference purposes only. Not to be used for de-sign or construction purposes.Roller lever: Length from the operating shaft axis to the roller axis.All other: Length from the operating shaft axis to the tip.
Caution—When selecting lever, required return torque should not exceed minimum return torque in operating head.Cap screw accommodates 3/64 inch Allen wrench.By re-assembling lever minimum can be reduced an-other 0.50 (13).
Applies when lever extended to maximum dimension.See dimensions page 13/128.
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Levers for plug-in and non-plug-in versions—most widely used
Levers for plug-in and non-plug-in versions:
OperatorLength
Inches (mm)
Roller Min.required return torque oz-in
Catalog Number
TypeDiameter In. (mm)
Face width in. (mm)
Stainlesssteel
Castaluminum
List Price $1 unit
Roller levers
Cast aluminum Roller on reverse side
1.50 (38) Nylatron
Nylatron
Ball bearing
0.75 (19)
1.5 (38)
0.69 (17)
0.31 (8)
0.28 (7)
0.25 (6)
0.53
0.96
0.77
_
_
_
3SX03-KL310
3SX03-KL536
3SX03-KL580
13.00
22.00
31.00
Stainless steel Offset lever (Inboard roller shown)
1.50 (38)
Inboard roller
Nylatron
Metal
Ball bearing
0.75 (19)
0.75 (19)
0.69 (17)
0.31 (8)
0.31 (8)
0.25 (6)
0.65
1.20
0.90
3SX03-KL24
3SX03-KL25
3SX03-KL26
_
_
_
13.00
13.00
27.00
1.50 (38)
outboard roller
Nylatron
Metal
Ball bearing
Nylatron
0.75 (19)
0.75 (19)
0.69 (17)
0.75 (19)
0.31 (8)
0.31 (8)
0.25 (6)
1 (25)
0.65
1.20
0.90
1.10
3SX03-KL27
3SX03-KL28
3SX03-KL29
3SX03-KL30
_
_
_
_
13.00
13.00
27.00
22.00
Bantam lever 0.69 (18) Metal 0.88 (22) 0.19 (5) 0.45 3SX03-KL532 31.00
Spring rod 11.62 (295) Metal rod 2.80 3SX03-KL421 22.00
Adjustable wire 12.12 (308) max.
Nylon covered wire 1.50 3SX03-KL533 22.00
Adjustable wide roller lever
3.9 (99) 0.75 (19) Dia. Nylatron Roller
0.19 (30) Dia. Rod
4.50 3SX03-KL37 49.00
Wobble head operators
See dimensions page 13/128 Stainless steel rod _ Rod diameter - 0.06 (2) _ 3SX03-KW3 9.00
Applies when lever extended to maximum dimension. Caution—When selecting lever, required return torque should not exceed minimum return force in operating head.
Length from operating shaft axis to the roller axis. Maximum dimensions, precision adjustable to lesser dimensions.
By re-assembling lever minimum can be reduced by 1/2 in.
All dimensions shown in inches and (millimeters). For reference purposes only. Not to be used for design or construction purposes.
Siemens Energy & Automation, Inc.Industrial Controls Catalog
Siemens / Industrial Controls Previous folio:
Description
Features
• NEMA 1 Enclosed Aluminum Die Cast Housing
• Screw Terminals
• Booted versions for added protection
• 1/2" Conduit Entrance
• NEMA A600, R300 Contacts
• UL Recognized
• CSA Certified
• INO/INC Snap-action contacts (form c)
Application
These switches are designed for accurate repeatability. Their compact size makes them ideal for use in space-restricted areas.
Typical applications include overhead, folding and elevator doors, sliding gates and other automated equipment.
Overall dimensions Specifications CatalogNumber
List Price $ 1 unit
Plunger actuator
OF Max. - 8.82 - 12.3 oz. (250 - 350 g)RF Min. 4.02 oz. (114 g)PT Max. - 0.016 in. (0.4 mm)OT Min. - 0.217 in. (5.5 mm)MD Max. - 0.002 in. (0.05 mm)OP - 1.504 in. (38.2 mm)
3SE03 - EB05 24.00
Booted plunger
OF Max. - 28.22 oz. (800 g)RF Min. 8.46 oz. (240 g)PT Max. - 0.079 in. (2.0 mm)OT Min. - 0.197 in. (5.0 mm)MD Max. - 0.004 in. (0.1 mm)OP - 1.803 in. (45.8 mm)
3SE03 - EB06 28.00
Roller lever
OF Max. - 20.1 oz. (570 g)RF Min. 6.0 oz. (170 g)PT Max. - 0.157 in. (4.0 mm)OT Min. - 0.236 in. (6.0 mm)MD Max. - 0.016 in. (0.4 mm)
3SE03 - EB32 35.00
Booted roller lever
OF Max. - 22.57 oz. (640 g)RF Min. 8.11 oz. (230 g)PT Max. - 0.197 in. (5.0 mm)OT Min. - 0.236 in. (6.0 mm)MD Max. - 0.016 in. (0.4 mm)
3SE03 - EB33 41.00
OF = Operating ForceRF = Return ForcePT = PretravelOT = Operating TravelMD = Movement DifferentialOP = Operating Position
1) Inductive load has power factor of 0.04 minimum (AC) and a time of 7m/second (DC)
2) Lamp load has an inrush current of 6 times steady-state current.
Overall dimensions Specifications Catalog Number List Price $1 unit
Roller plunger
OF Max. - 9.92 - 12.3 oz. (250 - 350 g)RF Min. 4.02 oz. (114 g)PT Max. - 0.02 in. (0.5 mm)OT Min. - 0.142 in. (3.6 mm)MD Max. - 0.002 in. (0.05 mm)OP - 1.957 in. (49.7 mm)
3SE03 - EB07 35.00
Booted roller plunger
OF Max. - 17.64 oz. (500 g)RF Min. 3.53 oz. (100 g)PT Max. - 0.039 in. (1.0 mm)OT Min. - 0.138 in. (3.5 mm)MD Max. - 0.006 in. (0.12 mm)OP - 1.957 in. (49.7 mm)
3SE03 - EB08 41.00
Technical data
Mechanical Life 3,000,000 operations maximum
Electrical Life 500,000 operations minimum
Operating Speed 0.01 m/second to 1m/second
Cable Entry 1/2" NPT
Temperature Range -15° to 80° (5° to 176°F)
Degree of Protection NEMA 1
Mounting Any Position
NEMA Rating A600, R300
Rated Voltage (V)1)2)Non-Inductive Load (A) Inductive load (A)
Inrush current (A)Resistive load Lamp load Inductive load Motor loadNC-NO NO NC NC-NO NO NC NO NC