RFS Controller DIN Rail Temperature · Common mode rejection: 120dB @ 50/60Hz Normal mode rejection: 60dB @ 50/60Hz Installation: DIN rail mounting Installation category: II EMC/Safety:

High visibility display

3 color backlight

Multiple character sizes

Easy to assemble and wire

Simplified assembly and wiring

Simple connection of the serial link cable

Tool-free, spring clip mounting

Even easier to configure

No training required: startup wizard, standard applications

4 function keys withre-usable labels

1

Advanced temperature control

Smart tune - PID control

Soft start power limiter

3 relay/SSR outputs

CT input - load current monitoring

Simple configuration

OPC based graphical configurationsoftware

Universal TC, 3-wire RTD and linear mA,mV, V input

DIN Rail TemperatureController RFSRFS

Text Display

Easy connectivity

Modular interconnection

RS-485 Modbus®

2

RFS - Compact DIN Rail Mounted Controller

Overview

Designed to offer outstanding control performanceand provide a comprehensive solution for a wide

variety of applications; such as food processing, plasticmanufacturing, and process applications requiring heat/coolcontrol and process protection alarms in a compact DIN railmounted package.

Universal thermocouple or RTD input coupled with aresponsive SMART auto-tuning PID control algorithm that isequipped with special functions, including soft start and non-linear cooling. A complete set of process protection alarmfunctions; high and low limit, band and deviation are included.

Modular interconnection allows simultaneous connection ofall common instrument elements: power supply, serial interface, logic input and open collector output forcommon alarms. The RFS-AL alarm-logic input expansion unit makes use of the modular interconnectionfunction to provide additional I/O capacity.

Smart tuning

Automatically adjusts the PID parameters accordingto the process dynamics. An important characteristicof the Eurotherm Controls continuous self tuningalgorithm is its ability to optimize control

parameters without injecting any artificialdisturbances into the system.

Synchronized pre-heating

Eliminates differential heating during startup dueto different heat rates of individual heaters inapplications such as extruders andinjection hot runner control.

The setpoint ramp rates of all heatingzones within a group aresynchronized by “holding back” theramping setpoint. In order toachieve this, the individual loopband alarms are controlled by thecommon alarm output and isolated logicinput functions.

PC interface port + OPC basedconfiguration software

The integrated configuration port uses specialsoftware and an adaptor allowing:

1. Easy configuration of the instrument, with descriptions of the parameters and therelative limits.

2. Computer storage of the completeconfiguration allowing it to be copied to other RFS units.

3. Copying and cloning of the configuration to a new instrument.

4. The configuration interface port can be used for configuration and formonitoring the process during setup.

Process protection alarms

Process (high or low limit), Band andDeviation alarm outputs are available withthe additional flexibility of latching andmasking functions until the processvariable reaches the alarm threshold.

Band and Deviation alarms are also masked after asetpoint change until the process variable reachesthe alarm threshold. The alarm latching functionholds the alarm on until it is acknowledged.

Sequential addresses (Modbus) forcommonly accessed parameters

To maximize the data transfer rates between theRFS and the host supervisory system, importantoperating parameters are grouped. Digital statusinformation is transferred as data words toincrease efficiency. The RFS is able tocommunicate relevant parameter informationwith a single data request, instead of a series ofseparate address operations.

3

Startup energy management

To reduce the maximum electrical loading at machine startup, the sequence of theRFS control outputs is scheduledaccording to the selectedinstrument Modbus address. Thissignificantly reduces maximumstartup current requirements andoffers potential savings in electricalinstallation capacity and cablingspecification requirements.

Communication availability of I/O

All RFS I/O can be read directly over the Modbuscommunication interface by the host supervisorysystem. Additionally, the communication host can write to RFS outputs that are not assigned as alarm or status functions. This expands availablePLC and host supervisory system I/O, simplifiesmachine troubleshooting and provides the ability toperform remote diagnostics.

OFD - output failure detection(optional)

Using the CT input, the output failure detectionfunction monitors the current in the load driven by output 1. Load and actuator protection isprovided in the following manner:

During the ON period of the output, theinstrument measures the current through the loadand generates an alarm condition if the current islower than a pre-programmed threshold. A lowcurrent indicates a partial or total breakdown ofthe load or actuator SSR.

During the OFF period of the output, the instru-ment measures the leakage current through theload and generates an alarm condition if thecurrent is higher than a pre-programmed thresholdvalue. A high leakage current indicates a short circuit of the actuator.

Specifications

Case: PC/ABS grey

Self-extinguishing degree: V0 according to UL 746C

Front protection: IP20

Dimensions: 131 x 117 x 22.5mm

Weight: 250g max.

Power supply: switching 24VAC/VDC(±10% of nominal value)

Power consumption: 6VA

Insulation: reinforced insulation is guaranteedbetween supply input, instrumentinputs and outputs

Common mode rejection: 120dB @ 50/60Hz

Normal mode rejection: 60dB @ 50/60Hz

Installation: DIN rail mounting

Installation category: II

EMC/Safety: CE certified; compliant with regs89/336/EEC (harmonized referencestandard EN-50081-2 and EN-50082-2) and 73/23/EEC e93/68/EEC (harmonized referencestandard EN 61010-1)

Sampling time: 250mSec for linear inputs500mSec for TC or RTD inputs

Accuracy: ±0.2% f.s.v. @ 25°Cwith nominal supply voltage

Operating temperature: 0 to +50°C

Storage temperature: -20 to +70°C

Humidity: 20% to 85% RH, non-condensing

Measurement inputs

All inputs are configurable andcalibrated at the factory.

RTD Input

Type: 3-wire Pt100

Calibration: according to DIN 43760

Measuring current: 130µA

Line resistance: auto-compensation up to 20 ohmsper wire with no measurable error

Engineering units: programmable ºC or ºF

Sensor break: indicates break of sensor or one ormore wires; indicates short circuitwhen sensor resistance <12 ohms

Pt100 3-wireRTD°C°F

-200.0/400.0-200.0/400.0

-200/800-330/1470

4

Linear Inputs

Scaling: programmablefrom keyboard-2000 to 4000

Decimal point: programmable to any position

Thermocouple Input

Sensor break: open circuit sensorbreak detection

Cold junction compensation: automatic compensation

of temperature beween 0 and 50ºC

Cold junction compensation error: 0.1ºC/ºC

Input impedance: 1M ohms

Calibration: according to IEC 584-1:1995; DIN 43710-1977for TC type L

Current Transformer Input

Input current: 50mA,50/60Hz

Full scale range: 0-10A, 0-100A(configurable)

Resolution: 0-20A: 0.1A21-100A: 1A

Programmable output: NO or NC relay controloutput; Logic level 1 or 0;SSR control output

Minimum period: On and Off: 400mSec

Input 0-20 mA 4-20 mA 0-60 mV 12-60 mV

Impedance <5 ohms <5 ohms >1M ohms >1M ohms

TC L L J J K K N R S T

ºC 0/400.0 0/900 -100.0/400.0 -100/1000 -100.0/400.0 -100/1370 -100/1400 0/1760 0/1760 -200.0/400.0

ºF 0/1650 -150/1830 -150/2500 -150/2550 0/3200 0/3200 -330/750

Output 1 and 2 - SSR

Function: control output

Type: non-isolatedLogic level 1:

27VDC max. @ 1mA; 14VDC min. @ 20mA

Logic level 0: < 0.5V

Logic Input

Function: selection of the operatingsetpoint (SP or SP2) or ofthe temporary block ofsetpoint ramp

Type: dry contact excitation 8V,8mA

Insulation: functional insulation

Insulation voltage: 50Vrms

Relay Type

Output 1

Function: control output

Type: SPST

Contact load: 3A @ 250VAC max. onresistive load

Output 2

Function: control output or alarm

Type: relay with SPSTcontact

Contact load: 3A @ 250VACmax. on resistiveload

Output 3

Function: alarm output

Type: relay with SPDTcontact

Contact load: 3A @ 250VACmax. on resistiveload

Output 4

Function: group alarm(common output)

Type: open collector

Contact load: 20mA max. @ 48V

Outputs

5

Control Action

Type: one (heating) or two(heating/cooling) controloutputs

Output action: time proportioning

Control action: ON/OFFPI or PID + SMART

Proportional band: 1.0% to 100.0% of the inputrange for one controlelement;1.5% to 100.0% of the inputrange for two controlelements;Setting PB = 0 causesON/OFF control

Hysteresis: programmable from 0.1% to10.0% of the input span

Integral time: programmable from 1 secondto 20 minutes (or none)

Derivative time: programmable from 1 secondto 10 minutes (or none)

Integral offset: for one control element(heating), the offset isprogrammable from 0 to100% of the output range;for two control elements(heating/cooling) the offset isprogrammable from -100% to+100% of the output range

Output 1 cycle time: 1 second to 200 seconds

Manual to Auto: bumpless

Output 2 relative gain: Programmable from 0.20 to1.00 of the proportional band

Output 2 cycle time: 1 second to 200 seconds

Overlap/deadband: programmable from -20%(deadband) to +50% (overlap)of the proportional band

(for ON/OFF control)

Alarms

Alarm action: direct or inverse

Alarm functions: configurable asprocess, band ordeviation alarms

Alarm reset: programmable asautomatic or manual

Alarm masking: configurable as maskedor unmasked alarms

Hysteresis: 0.1 to 10.0% of input

Dual Setpoint Selection

Two user configurable operation setpoints are selectable through logic input or thecommunication interface. For ON/OFF controlaction, this provides a method for fast andconvenient run-hold switching, either by anexternal switch or by a host supervisory system.

Serial Interface

Type: isolated RS-485

Protocol: Modbus (2-wire)

Baud rate: 600 to 19200 BAUD

Byte format: 8 bit

Parity: even, odd or none

Stop bit: one

Address: 1 to 254

Voltage levels: according to EIA comm standard

Line loading: 1/4 unit load

24V power supply/comms

CPI connector

status indicator

OUT 3 relay

CT input

Dig input

1 2 3 4 5

678910111213

141516

171819

20212223

OUT 2 relay

OUT 1 SSR

PV

sen

sor

input

modula

r buss

ed

inte

rconnec

tion

Dimensions Connections

117 (4.606)

101 (3.976)22.5

(0.886)

8.5 (0.335)

131

(5.1

57)

120

(4.7

24)

6

RFS-AL Compact Alarm Expansion Module

Specifications

Output

Function: alarm output

Type: relay with SPDT contact

Contact load: 8A @ 250VAC max. on resistive load

Logic Input

Function: selection of theoperating setpoint (SP or SP2) or temporaryhold of setpoint ramp

Type: dry contact excitation8V, 8mA

Insulation: functional insulation

Insulation voltage: 50Vrms

117 (4.606)

101 (3.976)22.5

(0.886)

8.5 (0.335)

131

(5.1

57)

120

(4.7

24)

24V power supply/comms

status indicator

OUT 4 relay

Dig input

1 2 3 4 5

modul

ar b

usse

d

inte

rconn

ection

Dimensions Connections

7

Text Display

Easy to use

High visibility display• Display unit with 122 x 32 pixels and

up to 4 lines of 20 characters• Large characters (up to 17mm high),

1 line of 5 characters• Three color backlighting for better

alarm indication

Extended graphics• Multiple languages, including

Cyrillic and katakana• 128 customizable characters• Text import/export for translation

User interface• Easy navigation between messages • Two contextual command keys• Six service keys• Three passwords

Specifications

Operating temperature: 0 to 55ºC

Humidity: 20% to 85% RH

Communication port: DB25 female, RS-232, RS-485,Modbus Master,RTU up to 19.2K baud

Supply Voltage: 24VDC (18-30VDC, 5W max.)

Protection: IP65 (front)

Certification: CE, uL CSA

Dimensions

Enhance the design of your machine, overcomeproblems connected with difficult environmentsand increase user-friendliness for the operator!

Connections

9. Modbus10. 24VDC11. Not used

132(5.196)

118(4.645)7

(0.275)7

(0.275)

74(2

.913

)

104

(4.0

9)

31(1

.22)

43(1

.693

)

Ordering codes

Configuration Fields

1 2 3 4 5 6 7 8 9

RFS 5 3 5 0 0ER

1 - Model Code

RFS Base RFS

2 - Input

5 TC, RTD

4 - Output 1

1 relay

6 SSR

5 - Output 2

0 none

1 relay

6 SSR

6 - Options

0 none

4 OFD + logic in

5 alm2 + OFD + logic in

7 - Power Supply

5 24VDC

Connector Kit . . . . . . . . . . . . . . . . . . . . . . .ARFSKITC0N0002 x 2 Pin Connector2 x 3 Pin Connector1 x 5 Pin Connector1 x 8 Pin Connector

Interconnecting Bus Cable . . . . . . . . . . . .ARFSFLAT13000Current Tranformers

Current Transformer 10A . . . . . . . . . . . . . .7ERR10000000Current Transformer 25A . . . . . . . . . . . . . .7ERR20000000Current Transformer 50A . . . . . . . . . . . . . .7ERR40000000Current Transformer 100A . . . . . . . . . . . . .7ERR50000000

PC Configurator for RFS . . . . . . . . . . . . . . . .CPI12210000NRFS Alarm Unit . . . . . . . . . . . . . . . . . . . . .ARFSAL00000ERRFS User Manual CD . . . . . . . . . . . . . . . . . . . . . . .HA136732

3 - Control Action

3 PID + smart

RFS

Text Display4 Line Text Operator Station . . . . . . . . . . . . . . . . . . .71-1165Text Display Config Software and Cable . . . . . . . . .71-1166Cable (RFS to 4 Line Text Display) . . . . . . . . . . . . . .A-60222

May 2004 HA136733

©2004 Eurotherm Controls Incorporated. All rights reserved. Everyeffort has been taken to ensure the accuracy of this specification.However, in order to maintain our technological lead we are con-tinuously improving our products which could, without notice, result in amendments or omissions to these specifications. We cannot accept responsibility for damage, injury, or loss expenses resulting fromthis document.

741-F Miller Drive, Leesburg, Virginia 20175, Phone 703 443 0000, Fax 703 669 1300, [email protected], www.eurotherm.com

For more information contact your local representative:

A c t i o n I n s t r u m e n t s • B a r b e r - C o l m a n • E u r o t h e r m C h e s s e l l • E u r o t h e r m C o n t r o l s