product line - a junction box FOUNDATION FIELDBUS PROFIBUS PA Junction BOX
product line - a junction box
FOUNDATION FIELDBUSPROFIBUS PA
Junction BOX
2 Sense
IntroductionThis catalog contains information about the Profibus PA and Foundation Fieldbus network and has the main goal to show thejunction box line for the field instrument. The junction box in this catalog can be passive, with protection against short-circuit orintrinsic safety barrier to protection for up to 8 Ex I field equipment and are available in plastic or metallic material.
Profibus PA and Foundation Fieldbus H1With fieldbus technology, users can have several benefits offered by digital technology and also they can take advantage and getoptimization and cost savings with the network distribution bringing safety and reliability in the operations. For the success of any automation and control network, the installation should be done carefully and within the specifications.Precautions and practices are required when designing, installing or testing Profibus PA networks and also adopted for theFoundation Fiedbus H1 network, since the physical layer of these protocols are defined by the same international standardIEC61158-2.
The Profibus PA and Foundation Fieldbus H1 protocol is a bi-directional digital communication that allows the networkinterconnection of several equipment in the field, doing acquisition execution and functions, as well as the procedures andmonitoring stations (IHMs) through supervisor softwares. The protocol is based on OSI standard, which has the following layers:Physical Layer, Communication Stack and User Application. We can mention the management in a global way with the applicationsand advent models based on Function Blocks and Device Descriptions, which recently was standardized according to IEC, the EDDL concept including HART, Foundation Fieldbus and Profibus. The Physical Layer is defined by international standards (IEC, ISA). It receives messages from the Communication Stack andconverts them into physical signals in the middle of the fieldbus transmission including and removing preambles, delimiters ofbeginning and end of messages.
The physical layer is based on the IEC61158-2, we can cite the following features:
• Data transfer using Manchester code with transmission rate 31.25Kbit / s
• For a full signal communication, each product must have at least 9 volts. The H1 physical layer allows that the fieldequipment is powered by bus. The same pair of wires that feed the equipment also provides the communication signal.
• Maximum length is 1900m (trunk and spurs) without repeaters.
• Using up to 4 repeaters, the maximum length can be 9.5 km.
• Non safety buses in Profibus PA and no external power for trunk line can support the communication of 2 to 32connected field equipment.
• Profibus PA trunk must be able to support various equipments in accordance with intrinsic safety standards and withoutexternal power: - Explosion Group IIC: 9 equipments - Explosion Group IIB: 23 equipments Note: It can connect more equipments than the specified, depending on the equipment consumption, the power supply, the intrinsic safety barrier characteristics and the FISCO model.
• No interrupting trunk line in operation while connection and disconnection equipments on the spurs.
• Topology: bus, tree, star or mixed (a combination of all supported technologies).
The FISCO model has the following features:
a) a single active element (power supply) on the Fieldbus, located in non-classified area; b) the others equipments are in classified area; c) each field equipment must have minimum consumption of 10mA; d) in Ex ia areas the maximum bus length must be 1000m and 1000m in Ex ib areas; e) For the cable (no cabling restriction until 1000) must take the following parameters:- R´:15 ... 150 Ohm/Km- L´: 0.4 ... 1 mH/Km- C´: 80 ... 200 nF/KmCable type A: 0.8mm2(AWG18) (*)
f) Termination:a. R = 90 ... 100 ohmsb. C = 0 ... 2.2 µF.
Physical Layer
3Sense
The FISCO concept was optimized allowing a greater number of the field equipments, according to the bus length, taking intoaccount the cable variation parameters (R, ‘L’, C ‘) and using terminators. The concept is in accordance with gases categories andgroups that make a simple evaluation of the complete installation involving intrinsic safety. This increased the current capability per segment and the evaluation for users became easier. Furthermore, when purchasing certified products they don't have to worry with calculations, even changing them in operation.
15 a 20mA p-p
Fieldbus Device
Devi
ce C
urr
ent
H1 - 31.25 Kbit/s Voltage Mode
Receiving Transmitting0.75 a 1.0V p-p
Voltage
PowerSupply
C
100 Ohm
C
100 Ohm
Fieldbus Network
Terminator
C is sized to pass 31.25Kbit/s
0 1 1 0 0+
0
1
-
1 Bit Time
CLOCK
DATA
MANCHESTERBIPHASE-LENCODING
Fieldbus signal in voltage mode Manchester code
The data transmission of a field equipment is typically 10mA in 31.25Kbit / s at an equivalent resistive load of 50 Ohms creating amodulated voltage signal in 1.0 Volt peak to peak. The power supply can provide 9 to 32 VDC, but in secure applications (IS) it´snecessary to follow the intrinsic safety barriers requirements.
PHYSICAL LAYER
USERAPPLICATION
COMMUNICATION“STACK”
v
tFieldbus Media
(wire)
The total cable length is the sum of the trunk length (bus master) and all the Spurs (larger than 1m) which the maximum length ofthe cable type A (*) is the 1900m in unsafe areas. In safe areas the maximum length is 1000 m using cable type A and the spurscannot exceed 30m.
31.25 Kbit/s Voltage mode
4 Sense
TopologyWe can have the following topologies below, remembering that these examples are for Profibus PA Network, but for H1 Networkthey also apply to the Foundation Fieldbus: star, line and point-to-point. Normally, in practice is used a mixed topology:
15 a 20mA p-p
Fieldbus Device
Devi
ce C
urr
ent
H1 - 31.25 Kbit/s Voltage Mode
Receiving Transmitting0.75 a 1.0V p-p
Voltage
PowerSupply
C
100 Ohm
C
100 Ohm
Fieldbus Network
Terminator
C is sized to pass 31.25Kbit/s
0 1 1 0 0+
0
1
-
1 Bit Time
CLOCK
DATA
MANCHESTERBIPHASE-LENCODING
PHYSICAL LAYER
USERAPPLICATION
COMMUNICATION“STACK”
v
tFieldbus Media
(wire)
Network CablesSeveral cable types can be used (it is recommended to use the twisted-pair with the shield). The maximum length can changedepending on the diameter and others cable components. Below we show four cable types, but there are more options. No specialcable type is required. Usually the cables that connect the instruments can be used for the trunk line. The network cable forProfibus PA and Foundation Fieldbus are produced by several manufacturers becoming easy the choice.
Star Line Point-to-point
Cable options
Pair Diameter Max. length(m) Type
single 0.75mm2 1900 A
mult 0.32mm2 1200 B
mult 0.13mm2 400 C
mult 1.25mm2 200 D
- Zo @ 31,25KHz = 100 Ohm ± 20%- Max. Attenuation @ 39KHz = 3dB/ Km- Max.capacitance unbalance to earth = 2 nF/ Km- Max. DC resistance per conductor = 22 W/ Km- Max. propagation delay change 7.8 - 39KHz = 1.7 ms/ Km- Conductor transversal area: 0.75mm
2.
Cable Type A
Note: only the shield must be grounded, never the communication wires. If the cable has no shielding wire, it should be inside ametal conduit that works as a shield.
A spur is a branch off the trunk and can vary in length between 1 and 120m. Spurs length is basically independent of the cable typeand the total length can´t not exceeded the specifications, but depends on the amount of equipment connected in it. Never connect more than four devices on the spurs. The spurs are used to connect the equipments to the trunk so they can be removed withoutinterrupting the network operation.
Spurs
Number ofSpurs
amount of the equipments
1 equipment
2 equipments
3 equipments
4 equipaments
25 - 32 1 m 1 m 1 m 1 m
19 - 24 30 m 1 m 1 m 1 m
15 - 18 60 m 30 m 1 m 1 m
13 - 14 90 m 60 m 30 m 1 m
1 - 12 120 m 90 m 60 m 30 m
Equipment x Spur lengthThe maximum segment length is the sum of the trunks and spurs lengths and the lengths less than 1 m are not considered spurs.The amount of spurs and the number of equipment should be in accordance with the table below.
Note 1: For Ex installations you should not exceed the 9 equipments in group IIC and the lengthshould be up to 30m with one equipment per spur and the consumption less than 110 mA.Note 2: It is important to pay attention to the spur length when using the star topology, sincethe Spurs in this case are often longer when compared with the bus line topology.
TerminadorThe terminator is designed tomatch the network impedance and for this must be installed onall edges of trunk line, so thereflection effect will beeliminated and the networkworks normally.
5Sense
FD - Passive Junction Box - General Purpose
Provide a simple and secure way the distribution of the points for the network of up to four equipments. The case is plastic material and has internal terminal forconnecting the spurs allowing the field installation with protection against liquidpenetration (IP66). The input and output network is connected in a dual plug-in connector, allowingthe distributor board disconnection without interrupting the rest of the network,being de-energized only their spurs.
Junction box for general purpose
Network Points General Purpose
Profibus PA2 PA-MD-2D
4 PA-MD-4D
Foundation Fieldbus2 FF-MD-2D
4 FF-MD-4D
2 or 4 points available
General purpose module, plastic house
Internal network terminator
Passive junction box only for spurs of thenetwork trunk line
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Provide a simple and secure way the distribution points for a network of up to eight equipments. The case is in plastic or metal material with terminals forspur connections allowing the field installation with protection against liquidpenetration (IP66).The input and output network connector is a dual plug-in, allowing thedistributor board disconnection without interrupting the rest of the network,being de-energized only their spurs.
4, 6 or 8 points available
Passive junction box only for spurs.
General purpose in plastic or metallic case
Junction box for general purpose
Network FD4 FD6 FD8
Profibus PAPlastic general
purpose
PA-FD-4D PA-FD-6D PA-FD-8D
Metallic PA-FDM-4D PA-FDM-6D PA-FDM-8D
FoundationFieldbus
Plastic generalpurpose
FF-FD-4D FF-FD-6D FF-FD-8D
Metallic FF-FDM-4D FF-FDM-6D FF-FDM-8D
MD - Passive Junction Box - General Purpose
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6 Sense
Specifications
Features PROFIBUS PAPlastic Metallic
FOUNDATION FIELDBUSPlastic Metallic
2 points MD model PA-MD-2D FF-MD-2D
4 points MD model PA-MD-4D FF-MD-4D
4 points FD model PA-FD-4D PA-FDM-4D FF-FD-4D FF-FDM-4D
6 points FD model PA-FD-6D PA-FDM-6D FF-FD-6D FF-FDM-6D
8 points FD model PA-FD-8D PA-FDM-8D FF-FD-8D FF-FDM-8D
Signaling power no no
Short electronic protection for spurs no no
Terminator yes yes
Terminator signaling no no
Ex protection - -
Fault monitoring - -
Network connection 3 ways double plug-in terminal 2.5 mm² 3 ways double plug-in terminal 2.5 mm²
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output for trunk cable cable gland PG16 cable gland PG16
Cable disconnection allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 2, 4, 6 or 8 2, 4, 6 or 8
Spur connections 3 ways plug-in terminal 2.5 mm² 3 ways plug-in terminal 2.5 mm²
Housing material Plastic (MD and FD) aluminum (FDM) Plastic (MD and FD) aluminum (FDM)
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Approx. 1600g Approx. 1600g
Accessories included terminal, isolator tube, cover, cable gland terminal, isolator tube, cover, cable gland
Mechanical Dimensions
8 points
Dimensions - FD
FDA
(mm)B
(mm)C
(mm)
Plastic 200 120 57,5
Metallic 200 120 65
Topology
PLC
Fieldbus or
Profibus PA
Segment ProtectorGeneral Purpose
Segment ProtectorGeneral Purpose
* Dimensions for 4, 6 and 8 pointsmodels.
7Sense
Segment Protectors are fieldbus distributor which incorporate electronic protectionagainst short-circuit for each network segment and its spurs. They are available with 2or 4 points of derivations and mounted in plastic box. All versions are mounted with cable gland and double plug-in connector for the trunk line connection and plug-in connectors for the derivations (Spurs).
Segment Protector for general purpose
Network PointsGeneralPurpose
Profibus PA2 PA-MD-2P
4 PA-MD-4P
Foundation Fieldbus2 FF-MD-2P
4 FF-MD-4P
4 or 6 points available general purpose in plastic house
Network terminator inside themodule
Protection against short-circuit
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MD - Segment Protector - General Purpose
FD - Segment Protector - general purpose
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Electronic Protection and Network terminatorThe network modules for Profibus PA and Foundation Fieldbus haveelectronic protection against short circuit in each spur. FF and PA modules also incorporate the network terminator and to enable it turn on a dipswitch located inside the module.
Segment Protectors are fieldbus distributor which incorporate electronic
protection against short-circuit and overload for each spur. They are available
with 4, 6 or 8 derivation points and can be mounted in plastic or metal box.They
have double plug-in connector for trunk line connection and plug-in connectors for
the derivations (Spurs). All versions are mounted with cable glands.
Electronic Protection and Network terminatorThe network modules for Profibus PA and Foundation Fieldbus have ElectronicProtection against short-circuit in each spurs. FF and PA modules also incorporate the network terminator for switching it onlyturn on the dipswitch located inside the module.
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Segment Protector general purpose
Rede FD4 FD6 FD8
Profibus PAPlastic general
purpose
PA-FD-4P PA-FD-6P PA-FD-8P
Metallic PA-FDM-4P PA-FDM-6P PA-FDM-8P
FoundationFieldbus
Plastic generalpurpose
FF-FD-4P FF-FD-6P FF-FD-8P
Metallic FF-FDM-4P FF-FDM-6P FF-FDM-8P
8 Sense
Specifications
Mechanical Dimensions
Protector 8 points
Tabela de Dimensões - FD
FDA
(mm)B
(mm)C
(mm)
Plastic 200 120 57.5
Metallic 200 120 65
Topology
* Dimensions for 4 and 6 pointsmodels.
Features PROFIBUS PA FOUNDATION FIELDBUS
House Plastic Metallic Plastic Metallic
MD 2 points model PA-MD-2P FF-MD-2P
MD 4 points model PA-MD-4P FF-MD-4P
FD 4 points model PA-FD-4P PA-FDM-4P FF-FDM-4P FF-FDM-4P
FD 6 points model PA-FD-6P PA-FDM-6P FF-FDM-6P FF-FDM-6P
FD 8 points model PA-FD-8P PA-FDM-8P FF-FDM-8P FF-FDM-8P
Power supply 9 to 32 Vdc 9 to 32 Vdc
Current per channel 40 mA ± 5% 40 mA ± 5%
Internal signaling red led red led
Electronic Protection for short-circuitin spurs
yes yes
Terminator yes yes
Terminator signaling no no
Ex protection - -
Consumption without load fieldbus distributor: 2points: < 12mA / 4 points: < 18mA / 6 points: < 25mA / 8 points: < 38mA
Fault monitoring Red Led blinking : short-circuit in the spurs
Network connection double 3 ways plug-in terminal 2.5 mm² double 3 ways plug-in terminal 2.5 mm²
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output for trunk cable cable gland PG16 cable gland PG16
cable desconnexion allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 2, 4, 6 or 8 2, 4, 6 or 8
Spur connections 3 ways plug-in terminal 2.5 mm² 3 ways plug-in terminal 2.5 mm²
Housing material Plastic (MD e FD) aluminum (FDM) Plastic (MD e FD) aluminum (FDM)
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Aprox. 1600g Aprox. 1600g
Accessories included terminal, isolator tube, cover, cable gland terminal, isolator tube, cover, cable gland
9Sense
Segment Protectors are fieldbus distributors which incorporate electronic protectionagainst short-circuit for each network segment and its spurs. They are available with 2or 4 points of derivations and are mounted in a plastic box. All versions are mounted with cable glands, double plug-in connector for trunk lineconnection and plug-in connectors for the derivations (Spurs).
Segment Protector Ex e
Network PointsGeneralPurpose
Profibus PA2 PA-MD-2P-Exe
4 PA-MD-4P-Exe
Foundation Fieldbus2 FF-MD-2P-Exe
4 FF-MD-4P-Exe
4 or 6 points available Ex e model in plastic house
Switchable integrated Networkterminator
Short-circuit protection
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Module internal view
1
2
3
4
MD - Segment Protector Increased Safety Ex e
FD - Segment Protector Increased Safety Ex e
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Electronic Protection and Network terminatorThe network modules for Profibus PA and Foundation Fieldbus haveElectronic Protection against short-circuit in each spurs. FF and PA modules also incorporate the network terminator for switching itonly turn on the dip switch located inside the module.
Segment Protectors are fieldbus distributors which incorporate electronic
protection against short-circuit for each network segment and its spurs. They are
available with 4, 6 or 8 derivation points and can be mounted in a plastic or metal
box. All models are mounted with cable glands, double plug-in connector for the
trunk line cable and plug-in connectors for the derivations (Spurs).
Electronic Protection and Network terminatorThe network modules for Profibus PA and Foundation Fieldbus have ElectronicProtection against short-circuit in the spurs. FF and PA modules also incorporate the network terminator for switching it turns on the dip switch located inside the module.
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Segment Protector Ex e
Network FD4 FD6 FD8
Profibus PAPlastic
Ex ePA-FD-4P-Exe PA-FD-6P-Exe PA-FD-8P-Exe
Metallic PA-FDM-4P-Exe PA-FDM-6P-Exe PA-FDM-8P-Exe
FoundationFieldbus
PlasticEx e
FF-FD-4P-Exe FF-FD-6P-Exe FF-FD-8P-Exe
Metallic FF-FDM-4P-Exe FF-FDM-6P-Exe FF-FDM-8P-Exe
10 Sense
Specifications
PROFIBUS PAPlastic Metallic
FOUNDATION FIELDBUSPlastic Metallic
MD 2 points model PA-MD-2P-Exe - FF-MD-2P-Exe -
MD 4 points model PA-MD-4P-Exe - FF-MD-4P-Exe -
FD 4 points model PA-FD-4P-Exe PA-FDM-4P-Exe FF-FD-4P-Exe FF-FDM-4P-Exe
FD 6 points model PA-FD-6P-Exe PA-FDM-6P-Exe FF-FD-6P-Exe FF-FDM-6P-Exe
FD 8 points model PA-FD-8P-Exe PA-FDM-8P-Exe FF-FD-8P-Exe FF-FDM-8P-Exe
Power supply 9 to 32 Vdc 9 to 32 Vdc
Current per channel 40 mA ± 5% 40 mA ± 5%
Internal indicator red led red led
Short Electronic Protection in thespurs
yes yes
Terminator yes yes
Terminator signaling não não
Ex protection Ex e Ex e
Consumption without load fieldbus distributor 2 points: < 12mA / 4 points: < 18mA / 6 points: < 25mA / 8 points: < 38mA
Fault monitoring Red led blinking: short-circuit in the spurs
Network connection double 3 ways plug-in terminal 2.5 mm² double 3 ways plug-in terminal 2.5 mm²
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output for trunk cable cable gland PG16 cable gland PG16
Cable desconnexion allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 2, 4, 6 or 8 2, 4, 6 or 8
Spur connections 3 ways plug-in terminal 2.5 mm² 3 ways plug-in terminal 2.5 mm²
Housing material Plastic (MD e FD) aluminum (FD) Plastic (MD e FD) aluminum (FD)
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Aprox. 1600g Aprox. 1600g
Accessories included terminal, isolator tube, cover, cable gland terminal, isolator tube, cover, cable gland
Mechanical Dimensions
Protector 8 points
Tabela de Dimensões - FD
FDA
(mm)B
(mm)C
(mm)
Plastic 200 120 91
Metallic 200 120 65
Topology
PLC
Fieldbus or
Profibus PA
Segment Protector Ex e
Segment Protector Ex e
* Dimensions for 4 and 6 pointsmodels.
11Sense
MD - Passive Derivator Ex iProvide in a simple and secure way the network equipment connection of up tofour points using a plastic box with internal terminal connections to spurs thatallows the installation in field with protection against liquid penetration (IP66). The input and output connector of the trunk line is a double plug-in connectorallowing the distributor board disconnection without interrupting the rest of thenetwork, being de-energized only their spurs.
Intrinsic safety modules
Network Spur points Modules Ex i
Profibus PA2 PA-MD-2D-Exi
4 PA-MD-4D-Exi
Foundation Fieldbus2 FF-MD-2D-Exi
4 FF-MD-4D-Exi
4 or 6 points available
Intrinsic safety modules in plastic house
Internal network terminator
Derivators for hazardous areas
FD - Passive Derivators Ex i
Module internal view
Provide in a simply and secure way the network equipment connection of up to eight equipments, using a plastic or metallic box with internal connectionterminals to spurs allowing the installation in field with protection against liquid penetration (IP66). The input and output connector of the trunk line is a double plug-in connectorallowing the distributor board disconnection without interrupting the rest of the Network being only their spurs de-energized.
4, 6 or 8 points available
Passive derivators only for spurs.
Intrinsic safety module in plastic or metallic house
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Intrinsic safety modules
Network FD4 FD6 FD8
Profibus PAPlastic
Ex iPA-FD-4D-Exi PA-FD-6D-Exi PA-FD-8D-Exi
Metallic PA-FDM-4D-Exi PA-FDM-6D-Exi PA-FDM-8D-Exi
FoundationFieldbus
PlasticEx i
FF-FD-4D-Exi FF-FD-6D-Exi FF-FD-8D-Exi
Metallic FF-FDM-4D-Exi FF-FDM-6D-Exi FF-FDM-8D-Exi
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12 Sense
Specifications
PROFIBUS PAPlastic Metallic
FOUNDATION FIELDBUSPlastic Metallic
Modelos MD 2 points PA-MD-2D-Exi - FF-MD-2D-Exi -
Modelos MD 4 points PA-MD-4D-Exi - FF-MD-4D-Exi -
FD 4 points model PA-FDM-4D-Exi PA-FDM-4D-Exi FF-FD-4D-Exi FF-FDM-4D-Exi
FD 6 points model PA-FDM-6D-Exi PA-FDM-6D-Exi FF-FD-6D-Exi FF-FDM-6D-Exi
FD 8 points model PA-FDM-8D-Exi PA-FDM-8D-Exi FF-FD-8D-Exi FF-FDM-8D-Exi
Function junction box for network junction box for network
Power supply indicator no no
Short Electronic Protection in thespurs
no no
Terminator yes yes
Terminator signaling no no
Ex protection Ex i Ex i
Fault monitoring - -
Network connection 3 ways double plug-in terminal 2.5 mm² 3 ways double plug-in terminal 2.5 mm²
Cable type PA cable Fieldbus cable
Input/Output for trunk cable cable gland PG16 cable gland PG16
cable desconnexion allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 2, 4, 6 or 8 2, 4, 6 or 8
Spur connections 3 ways plug-in terminal 2.5 mm² 3 ways plug-in terminal 2.5 mm²
Housing material Plastic (MD e FD) aluminum (FD) Plastic (MD e FD) aluminum (FD)
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Aprox. 1600g Aprox. 1600g
Accessories included terminal, isolator tube, cover, cable gland terminal, isolator tube, cover, cable gland
Mechanical Dimensions
8 points
2255
C
A
B
Tabela de Dimensões - FD
FDA
(mm)B
(mm)C
(mm)
Plastic 200 120 91
Metallic 200 120 65
Topology
Ex i field equipments
Ex i
SDCD
Fieldbus or
Ex i
Profibus PA
Ex i Derivator
ExiBarrier
Ex i Ex i
Ex i Derivator
Ex i field equipments
* dimension for 4 and 6 pointsmodels.
13Sense
Field Instruments Ex i
Ex i
Barrier Ex i
PLC
Fieldbus or
Trunk line Ex e
Ex i
Profibus PA
Intrinsic Safety Spurs( Ex i)
Field Instruments Ex i
Ex i Ex i
Barrier Ex i
It´s a fieldbus distributor that integrates an intrinsic safety barrier foreach individual output (Spur), providing the signaling and communication signal to each field instrument connected in the spur. Manufactured with high technology the field barrier allows theequipments disconnection in the spurs with the bus line energized. Available for Profibus PA and Foundation Fieldbus the barrierincorporates an intrinsical safe protection to each individual spuravailable in 2, 4, 6 or 8 points of derivations.
Field Barrier Exi
Total Security Módulos MD Módulos FD
The power sent to the field instrument is limited by the intrinsic safety barrier thatprovides a smart protection against short-circuit that turns off the output when thefault is detected and maintained the spur output current to a minimum value nocontributing to the communication collapse in the trunk line due to the high currentconsumption.
7
12
40
I (mA)
t (s)Short-Circuit
Sense field barrier
* Device connected to spur with 12mA current consumption
7
12
40
I (mA)
t (s)Short-Circuit
Product offer in the market
FeaturesConnectivity with safety and practicality
Available in Plastic or Metallic materialwith 2, 4, 6 or 8 points
One barrier required for each derivationpoint (spur).
Modules certified for intrinsic safety
Used in explosive atmospheres, zones 1and 2
Fieldbus distributors (network andspurs) in all models
Intrinsic Safety DefinitionsThe intrinsic safety definition is a representative prevention concept of the ignition by power limiting of the incoming bus supply aswell as installation components in the field. The working principle is based on manipulating and storing electric low-power incapable of producing a detonation of the explosiveatmosphere due to heating effects or electrical sparks. In general it can be applied to several equipments and instrumentation systems, and the electric power only can be controlled atlow levels in instruments such as electronic current transmitters, pneumatic converters, limit switches, signaling, etc. The basicprinciple of the intrinsic safety is handle and storage low energy, so the circuit installed in the safe area never has enough energyrated (manipulated or stored) capable of causing ignition in the potentially explosive atmosphere. The great advantage of intrinsicsafety is to allow the instruments disconnection even energized.
Topology in Safe Network (Ex i)
14 Sense
MD - Field Barrier ExiThe MD field barrier is fieldbus distributor which incorporates an intrinsicsafety barrier for each spur. It´s available with 2 points of derivation in aplastic house.The input and output connector of the line trunk is a double plug-in terminal block, allowing the distributor board disconnection without interrupting therest of the network being only their spurs de-energized (spurs).
Module internal view
Allow the exchange of field equipment with the network working.
Terminator
ne
two
rl p
lug
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te
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spur plug-interminal
Intrinsic Safety Barrier
Network Modelo
Profibus PA PA-MD-2B-Exei
Foundation Fieldbus FF-MD-2B-Exei
Mechanical Dimensions
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1
IN
OUT
2
SpecificationsPROFIBUS PA FOUNDATION FIELDBUS
Function Intrinsic Safety Intrinsic Safety
Operating voltage 16 to 35 Vcc 16 to 35 Vcc
Consumption without load 16V - < 37mA / 35V - < 30mA 16V - < 37mA / 35V - < 30mA
Protection reverse polarity and short-circuit I < 20mA reverse polarity and short-circuit I < 20mA
Voltage output 13,6V / 1% - without load, 13.4 to 13.8 and<10V to 40mA 13,6V / 1% - without load, 13.4 to 13.8 and<10V to 40mA
Max. current per output 40mA 40mA
Led signaling led verde: Power supply / vermelho piscando: curto-circuito na saída
Electronic Protection nos seg. yes yes
Fault monitoring Red led blinking: short-circuit in the spurs
Ex protection Ex i (a barrier for each segment) Ex i (a barrier for each segment)
Terminator yes yes
Terminating indicator no no
Network connection 3 ways double plug-in terminal 3 ways double plug-in terminal
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output of the main cable by cable gland PG16 by cable gland PG16
cable disconnection allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of the spurs 2 points 2 points
Spur connections bornes plug-in 3 vias bornes plug-in 3 vias
Housing material Plastic Plastic
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20ºC to +55ºC -20ºC to +55ºC
Accessories included terminals, isolator tube, cover, cable gland terminals, isolator tube, cover, cable gland
15Sense
FD - Field Barriers Exi
The FD Field Barrier is a Fieldbus
distribution module that
integrates an intrinsic safety
barrier for each spur. It´s
available with 4, 6 or 8 points for
the spurs in a plastic or metallic
box. The input and output
network (trunk) is connected in a
double plug-in connector that
allows the distributor board dis-
connection without interrupting
the rest of the network, and being
turns off only in their derivations
(spurs).
Module FD4 Module FD6 Module FD8
Network FD4B FD6B FD8B
Profibus PAPlastic Ex i PA-FD-4B-Exei PA-FD-6B-Exei PA-FD-8B-Exei
Metallic Ex i PA-FDM-4B-Exei PA-FDM-6B-Exei PA-FDM-8B-Exei
FieldbusPlastic Ex i FF-FD-4B-Exei FF-FD-6B-Exei FF-FD-8B-Exei
Metallic Ex i FF-FDM-4B-Exei FF-FDM-6B-Exei FF-FDM-8B-Exei
Terminator
Network plug-in terminal
Pression terminal for the Spurs
Protection of the network terminal in Increased Safety
Allow the exchange of field equipment with the network energized.
Spur Status Led
(blink in short-circuit)
Ground terminal
Spur Status Led
(blink in short-circuit)
weiv l
anr
etni
elu
do
M
16 Sense
Features PROFIBUS PA FOUNDATION FIELDBUS
Modelo 4 points PA-FDM-4B-Exei FF-FDM-4B-Exei
Modelo 6 points PA-FDM-6B-Exei FF-FDM-6B-Exei
Modelo 8 points PA-FDM-8B-Exei FF-FDM-8B-Exei
Function Intrinsic Safety Intrinsic Safety
Operating voltage 16 to 35 Vcc 16 to 35 Vcc
Consumption without load 16V - < 37mA / 35V - < 30mA 16V - < 37mA / 35V - < 30mA
Protection reverse polarity and short-circuit I < 20mA reverse polarity and short-circuit I < 20mA
Output voltage13,6V / 1% - without load, 13.4V to 13.8 and >10 to40mA
13,6V / 1% - without load, 13.4V to 13.8 and >10 to40mA
Max. channel output current 40mA 40mA
Led indication Green Led: Power Supply / red blinking: output short-circuited
Short-circuit electronic protection in thesegments
yes yes
Terminator yes yes
Termination resistor indicator no no
Fault monitoring Red led blinking: short-circuit in the spurs
Ex protection Ex i (a barrier for each segment) Ex i (a barrier for each segment)
Network connection 3 ways double plug-in terminal 2.5 mm² 3 ways double plug-in terminal 2.5 mm²
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output for trunk cable cable gland PG16 cable gland PG16
cable disconnection allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 4, 6 or 8 4, 6 or 8
Spur connections 3 ways pression terminals 2.5 mm² 3 ways pression terminals 2.5 mm²
Housing material aluminum aluminum
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Aprox. 1600g Aprox. 1600g
Accessories included terminal, isolator tube, cover, cable gland terminal, isolator tube, cover, cable gland
Specifications
Barrier 4 points Barrier 6 points
Mechanical Dimensions
Dimension table
FDA
(mm)B
(mm)C
(mm)
PlasticEx i
220 120 91
MetallicEx i
200 120 65
C
A
B
C
A
B
C
A
B
Barrier 8 points
17Sense
FD - Field Barrier Exi with ConnectorThe FD Field Barrier is a fieldbus distributin module that integrates a intrinsic safety barrier for each spur. It´s available with 4, 6 or8 points for spurs with 7 / 8 “or M12 connectors in plastic or Metal box.
MV-4
DF el
ud
oM
7/8" connector model
Network FD4B FD6B FD8B
PA
Plastic PA-FD-4B-VM-Exei PA-FD-6B-VM-Exei PA-FD-8B-VM-Exei
Metallic PA-FDM-4B-VM-Exei PA-FDM-6B-VM-Exei PA-FDM-8B-VM-Exei
FFPlastic FF-FD-4B-VM-Exei FF-FD-6B-VM-Exei FF-FD-8B-VM-Exei
Metallic FF-FDM-4B-VM-Exei FF-FDM-6B-VM-Exei FF-FDM-8B-VM-Exei
Terminator
Networ plug-in terminal
Pression terminal
Protection to the networkterminals in Increased Safety
7/8” Spurconnector
7/8” network connector
Spur Status Led
(blink for short-circuit)
Ground terminal
Module internal view
M12 connector model
Network FD4B FD6B FD8B
PA
Plastic PA-FD-4B-V1-Exei PA-FD-6B-V1-Exei PA-FD-8B-V1-Exei
Metallic PA-FDM-4B-V1-Exei PA-FDM-6B-V1-Exei PA-FDM-8B-V1-Exei
FFPlastic FF-FD-4B-V1-Exei FF-FD-6B-V1-Exei FF-FD-8B-V1-Exei
Metallic FF-FDM-4B-V1-Exei FF-FDM-6B-V1-Exei FF-FDM-8B-V1-Exei
MV-
6DF
elu
do
M
MV-
8DF
elu
do
M
1V-4
DF el
ud
oM
1V-
6DF
elu
do
M
1V-
8DF
elu
do
M
18 Sense
Mechanical Dimensions
Dimension table
FDA
(mm)B
(mm)C
(mm)
PlasticEx i
220 120 91
MetallicEx i
200 120 65
18
A
B
C
Barrier 8 points
Specifications
31
2 4
Macho 7/8” Fêmea 7/8”
Rede IN Spur
Profibus PAPino 1 = Bus +Pino 2 = Not UsedPino 3 = Bus -Pino 4 = S (dreno)
Foundation FieldbusPino 1 = Bus -Pino 2 = Bus +Pino 3 = S (dreno)Pino 4 = Not Used
Rede OUT
13
4 2
Fêmea 7/8”
13
4 2
31
2 4
Macho 7/8” Fêmea M12
Rede IN
13
4 2
Spur
Profibus PAPino 1 = Bus +Pino 2 = Not UsedPino 3 = Bus -Pino 4 = S (dreno)
Foundation FieldbusPino 1 = Bus -Pino 2 = Bus +Pino 3 = S (dreno)Pino 4 = Not Used
Rede OUT
Fêmea 7/8”
13
4 2
MV r
eirra
B1
V reirr
aB* Dimensions for 4 and 6 points
models.
Features PROFIBUS PA FOUNDATION FIELDBUS
Modelo 4 points PA-FDM-4B-VM-Exei FF-FDM-4B-VM-Exei
Modelo 6 points PA-FDM-6B-VM-Exei FF-FDM-6B-VM-Exei
Modelo 8 points PA-FDM-8B-VM-Exei FF-FDM-8B-VM-Exei
Function Intrinsic Safety barrier Intrinsic Safety barrier
Operating voltage 16 to 35 Vdc 16 to 35 Vdc
Consumption without load 16V - < 37mA / 35V - < 30mA 16V - < 37mA / 35V - < 30mA
Protection reverse polarity and short-circuit I < 20mA reverse polarity and short-circuit I < 20mA
Output voltage13,6V / 1% - without load, 13,4V to 13,8V and >10 to40mA
13,6V / 1% - without load, 13,4V to 13,8V and >10 to 40mA
Max. channel output current
Led indication Green Led: power supply / red blinking: output short-circuited
Short-circuit electronic protection in thesegments
yes yes
Terminator yes yes
Terminating resistor indicator no no
Fault monitoring Red led blinking: short-circuit in the spurs
Ex protection Ex i (a barrier for each segment) Ex i (a barrier for each segment)
Network connection 3 ways double plug-in terminal 2.5 mm² 3 ways double plug-in terminal 2.5 mm²
Cable type Profibus PA cable Foundation Fieldbus cable
Input/Output for trunk cable via 7/8" connector via 7/8" connector
cable disconnection allowed without interrupting the rest of the network allowed without interrupting the rest of the network
Number of spurs 4, 6 or 8 4, 6 or 8
Spur connections via 7/8" connector via 7/8" connector
Housing material aluminum aluminum
Mounting cover 4 screws with rubber gasket 4 screws with rubber gasket
Protection class IP 66 IP 66
Operation temperature -20°C to +55°C -20°C to +55°C
Weight Approx. 1600g Approx. 1600g
Accessories included kit terminal,tubo isolador, tampão kit terminal, tubo isolador, tampão
19Sense
Code Key
PA - FD M - 8 B - VM - Ex
PA - Profibus PAFF - Foundation Fieldbus
Network
- : PlasticM : Metal
Material
MD - 2 or 4 points FD - 4, 6 or 8 points
Housing2 - 2 points 4- 4 points 6 - 6 points 8 - 8 points
Spurs
D- Derivador PassivoP - Protector deSegmentoIntrinsic Safety
Tipo
- TerminalV1 - M12 Connector VM - 7/8" Connector
Connetion
D- Passive DerivatorP - Segment ProtectorB - Intrinsic Safety Barrier
Type
- general purposeEx - For PotentiallyExplosive Atmospheree - Increased Safetyi - Intrinsic Safety
Version
Available:
Cable Gland (PG16 available)
11
GP
11
ex
E G
P
11 i
xE
GP
11 -
e x
E-P
Tr
otc
en
no
C
rot
ce
no
C
rot
ce
no
C
general purpose Ex e Ex i
Covers ( PG16 available)
Connectors
7/8" male 7/8" Female M12 Male
20 Sense
www.sense.com.br
20000000049 Rev.B - 05/14 - All information above may be modified with no previous notice..
Contact us:
HEADQUARTERSRua Tuiuti, 1237 - Tatuapé
São Paulo - SP - Cep: 03081-000Fone: 55 11 6190-0444
Fax:(11) [email protected]
FACILITY Av. Joaquim Moreira Carneiro. 600 - SantanaSanta Rita do Sapucaí - Minas Gerais - Cep:
37540-000Fone: 55 35 3471-2555Fax: 55 35 3471-2033