ero electronic RFS User Manual
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ero electronic RFS User Manual

Din rail mounting temperature controller
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TITLE: RFS – User Manual
USER MANUAL
ERO Electronic, division of Eurotherm s.r.l.
Via Enrico Mattei 21
I-28100 Novara ITALY
Tel. +39-0321-481111
Fax. +39-0321-481112
170.IU0.RFS.101
RFS
DIN Rail Mounting
Temperature
Controller

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  • Page 1 TITLE: RFS – User Manual 170.IU0.RFS.101 USER MANUAL DIN Rail Mounting Temperature Controller ERO Electronic, division of Eurotherm s.r.l. Via Enrico Mattei 21 I-28100 Novara ITALY Tel. +39-0321-481111 Fax. +39-0321-481112...
  • Page 2 Page GB 2/51 TITLE: RFS – User Manual 170.IU0.RFS.101...

  • Page 3: Table Of Contents

    Page GB 3/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Index MOUNTING REQUIREMENTS ...................... 4 OUTLINE DIMENSIONS ........................ 4 CONNECTION DIAGRAMS ......................4 ACCESSORIES..........................8 FUNCTIONALITY ......................... 11 SPECIAL FUNCTIONS DURING OPERATIVE MODE ..............11 GENERAL NOTES ON THE MODBUS RTU PROTOCOL ............13 TRANSMISSION FORMAT ......................

  • Page 4: Mounting Requirements

    Page GB 4/51 TITLE: RFS – User Manual 170.IU0.RFS.101 MOUNTING REQUIREMENTS Select a mounting location having the following Fig. 1.B characteristics: OUTLINE DIMENSIONS 1) it should be easy accessible 2) there is no vibrations or impact 22.5 3) there are no corrosive gases (sulphuric gas, ammonia, etc.).
  • Page 5 Page GB 5/51 TITLE: RFS – User Manual 170.IU0.RFS.101 2) Pay attention to the line resistance; a high line resistance (higher than 20 Ω/wire) may cause measurement errors. 3) If shielded cable is used, it should be grounded at one point only.
  • Page 6 Page GB 6/51 TITLE: RFS – User Manual 170.IU0.RFS.101 LOGIC INPUT Safety note: 1) Do not run logic input wiring together with RELAY OUTPUTS power cables. 2) Use an external dry contact capable of OUT 1 switching 5 mA, 7.5 V DC.
  • Page 7 RC network across the external NOTES: contact as show in Fig. 10 1) The RFS is equipped with an RS-485 driver The value of capacitor (C) and resistor (R) are with an input impedance fore time higher than shown in the following table.
  • Page 8 Page GB 8/51 TITLE: RFS – User Manual 170.IU0.RFS.101...

  • Page 9: Accessories

    Page GB 9/51 TITLE: RFS – User Manual 170.IU0.RFS.101 POWER LINE WIRING ACCESSORIES BUS cable It is possible to use a screw connector instead of POWER LINE 24 V A.C/DC the flat cable, allowing the normal wiring of a single controller.
  • Page 10 Fig. 18/B Common logic input CLOSE NOTE: As shown in Fig 18, the logic input of a group of RFS can be driven singularly (using terminals 6 and 7 of the specific instrument) or collectively (using terminals 24 and 25 of the Common I/O unit).
  • Page 11 Page GB 11/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Common alarm output Fig 21 – 2 wires connector Phoenix model MSTB 2.5/2-ST-5.08 Fig. 19 COMMON ALARM OUTPUT WIRING O F F Fig. 22 - 3 wires connector N . C .

  • Page 12: Functionality

    If a power down occurs when the control output The CPI and the RFS configuration program are is disabled, at instrument power up the control described in a specific manual.
  • Page 13 Availability of the not used I/O by serial link close the common logic input and the ramp All RFS I/O may be read directly over the execution of all the loops will be hold. Modbus communication interface by the host The ramp execution will restart when all supervisory system.
  • Page 14 Page GB 14/51 TITLE: RFS – User Manual 170.IU0.RFS.101 leakage current shows a short circuit of the The energy applied is restricted (by [1514]) for a actuator. programmable time [1515]. “Soft start” function This function allows to gradually warm up the machine during start up in order to delete thermal strength and to protect the raw material.

  • Page 15: General Notes On The Modbus Rtu Protocol

    Page GB 15/51 TITLE: RFS – User Manual 170.IU0.RFS.101 GENERAL NOTES ON THE MODBUS RTU PROTOCOL This half duplex protocol accepts one master and one or more slaves. The physical interface should be of the RS-485 type. A single multidrop link can take up to 120 devices having the same "High input impedance" as the transceiver used.
  • Page 16 Page GB 16/51 TITLE: RFS – User Manual 170.IU0.RFS.101 ERROR CHECK (CRC-16 Cyclical Redundancy Check) The CRC-16 value is calculated by the transmitting device. This value is appended to the message. The receiving device recalculates a CRC-16 and compares the calculated value to the received value.
  • Page 17 Page GB 17/51 TITLE: RFS – User Manual 170.IU0.RFS.101 An example of a C language function performing CRC generation is shown below. /* --------------------------------------------------------------- crc_16 calculate the crc_16 error check field Input parameters: buffer: string to calculate CRC length: bytes number of the string This function returns the CRC value.

  • Page 18: Function Code 1 And 2: Bits Reading

    Page GB 18/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 1 and 2: Bits reading These function codes are used by the master unit to request the value of a consecutive group of bits (max 24) which are representing the status of the slave unit.

  • Page 19: Function Code 3 And 4: Words Reading

    Page GB 19/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 3 and 4: Words reading These function codes are used by the master unit to read a consecutive group of words (16 bit) which contain the value of the variable of the slave unit.

  • Page 20: Function Code 5: Single Bit Writing

    Page GB 20/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 5: Single bit writing By using this command, the master unit can change the state of one bit of the slave unit. Command from master to slave Reply from slave to master...

  • Page 21: Function Code 6: Single Word Writing

    Page GB 21/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 6: Single word writing By using this command, the master unit can change the value of one word (16 bit) of the slave unit. Command from master to slave...

  • Page 22: Function Code 8: Diagnostic

    Page GB 22/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 8: Diagnostic By using this command, the master unit can check the communication system to Slaves. Request from master to slave Reply from slave to master Range Byte Range...

  • Page 23: Function Code 15: Multiple Bits Writing

    Page GB 23/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 15: Multiple bits writing This function code is used by master unit to set/reset a consecutive group of bits (Max 24). Command from master to slave Reply from slave to master...

  • Page 24: Function Code 16: Multiple Words Writing

    Page GB 24/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Function code 16: Multiple words writing This function code is used by the master unit to write a consecutive group of words . The master unit can change a maximum of 20 words at a time.

  • Page 25: Notes

    [1524] access allowed in factory test mode 5. Local/remote status In this controller, unlike other Ero Electronic devices, the “Local/remote status” setting isn’t required. This means that the master unit can modify any parameters without set any local/remote status bit, moreover no “3...
  • Page 26 Page GB 26/51 TITLE: RFS – User Manual 170.IU0.RFS.101 11. Communication parameters at start Due to the lack of frontal panel, no one protection scheme is available for this When it is desired to regain the control of an device.

  • Page 27: Error Reply

    Page GB 27/51 TITLE: RFS – User Manual 170.IU0.RFS.101 ERROR REPLY If the "error check" is wrong or the function code is not implemented or a buffer overflow has been received, the slave does not send any reply to the master.

  • Page 28: Device Identification Group (117)

    Page GB 28/51 TITLE: RFS – User Manual 170.IU0.RFS.101 DEVICE IDENTIFICATION GROUP (117) Modbus DESCRIPTION Address FIRMWARE DEVICE CLASS Availability: Always Value: 413 for RFS FIRMWARE DEVICE LETTER Availability: Always Value: ‘A’ (41h) FIRMWARE REVISION Availability: Always Value: Nr. of firmware revision...

  • Page 29: Operative Group (900)

    Note: On this group are repeated some information present in other groups. The purpose of this is to have these information at consecutive address. This solution allows to maximize the data transfer rates between the RFS and the host supervisory system.
  • Page 30 Page GB 30/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default Address DESCRIPTION Value Filtered Input variable (in engineering units) Notes: When a measure error is detected, the "Data field" contains one of these error codes: 30004 (7534h) = Under-range...

  • Page 31: Device Management Group (1000)

    Page GB 31/51 TITLE: RFS – User Manual 170.IU0.RFS.101 DEVICE MANAGEMENT GROUP (1000) Modbus DESCRIPTION Address Device mode Range: 0 = Operative mode 1 = Configuration mode 2 = Calibration mode 3 = reserved Note: When operative mode is set a “Parameter 1000 Check Operation”...

  • Page 32: Process Variable Input Group (1100)

    Page GB 32/51 TITLE: RFS – User Manual 170.IU0.RFS.101 PROCESS VARIABLE INPUT GROUP (1100) Modbus Default DESCRIPTION Address Value Measured value without filter (in engineering units) Notes: When an measure error is detected, the "Data field" contains one of these error codes:...
  • Page 33 Page GB 33/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value -2000/4000 (for linear) TB1=0 1103 Initial scale value (*) Range TB2=0 limits (for Tc/Rtd) -2000/4000 (for linear) TB1=400 1104 Full scale value (*) Range TB2=1000 limits (for Tc/Rtd) Decimal point position PV (Process variable).

  • Page 34: Current Transformer Input And Alarm Group (1200)

    Page GB 34/51 TITLE: RFS – User Manual 170.IU0.RFS.101 CURRENT TRANSFORMER INPUT AND ALARM GROUP (1200) Modbus Default DESCRIPTION Address Value CT alarm status ( “Load” and “Leakage” alarms) Range: 1200 0 = No alarm 1 = Alarm Note: Available only when the option is...
  • Page 35 Page GB 35/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value Active period of the load (for the current transformer) Range: 0 = Option not provided TB1 = 0 1207 1 = The load is energized when Out1 is TB2 = 0 active (Relay "ON"...

  • Page 36: Digital Input Group (1300)

    Page GB 36/51 TITLE: RFS – User Manual 170.IU0.RFS.101 DIGITAL INPUT GROUP (1300) Modbus Default DESCRIPTION Address Value Digital input status Range 1300 0 = Input not active (contact open) 1 = Input active (contact closed) Digital input function Range...

  • Page 37: Setpoint Group (1400)

    Page GB 37/51 TITLE: RFS – User Manual 170.IU0.RFS.101 SETPOINT GROUP (1400) Modbus Default DESCRIPTION Address Value Selected set point 1400 Range: 0 = Main set point 1 = Auxiliary set point 1401 Target set point (in engineering units) 1402 Working set point (in engineering units) SP L.
  • Page 38 Page GB 38/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value Operative set point alignment at start-up Range: 0 = The operative set point will be aligned to the set point selected by digital input or by the serial link...
  • Page 39 Page GB 39/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Notes about set point management NOTE 1 In order to make clear the result of different set of the various parameter, we have added the following diagram. M a i n S P [ 1 4 0 3 ]...

  • Page 40: Control (Output 1) Group (1500)

    Page GB 40/51 TITLE: RFS – User Manual 170.IU0.RFS.101 CONTROL (OUTPUT 1) GROUP (1500) Modbus DESCRIPTION Default Value Address Main set point (volatile) SP L. Limit/ TB1 = 0 1498 (Same as address 1404) SP H.Limit TB2 = 0 Main set point SP L.
  • Page 41 Page GB 41/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus DESCRIPTION Default Value Address Dead band/overlap between H/C outputs % of the proportional band) TB1 = 0 Notes: 1512 -20 / 50 TB2 = 0 1) Available only for HC control...
  • Page 42 Page GB 42/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus DESCRIPTION Default Value Address Condition for output safety value Range: 0 = No safety value (Standard setting) 1 = Safety value applied when over range or TB1 = 0 1522...

  • Page 43: Smart Group (1600)

    Page GB 43/51 TITLE: RFS – User Manual 170.IU0.RFS.101 SMART GROUP (1600) Modbus Default DESCRIPTION Address Value Tune status Range: 1600 0 = No tune 1 = Tune Adaptive status Range: 1601 0 = No adaptive 1 = Adaptive Smart enable/disable...

  • Page 44: Alarm 1 (Output 2) Group (1700)

    Page GB 44/51 TITLE: RFS – User Manual 170.IU0.RFS.101 ALARM 1 (OUTPUT 2) GROUP (1700) Modbus Default DESCRIPTION Address Value Alarm 1 status Range: 0 = No alarm 1700 1 = Alarm Note: Available only if AL1 is configured L. Scale / H.
  • Page 45 Page GB 45/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value Alarm 1 action Range: 0 = Direct action (relay energized in TB1 = 1 alarm condition) 1706 1 = Reverse action (relay TB2 = 1 de-energized in alarm condition)

  • Page 46: Alarm 2 (Output 3) Group (1800)

    Page GB 46/51 TITLE: RFS – User Manual 170.IU0.RFS.101 ALARM 2 (OUTPUT 3) GROUP (1800) Modbus Default DESCRIPTION Address Value Alarm 2 status Range: 0 = No alarm 1800 1 = Alarm Note: Available only if AL2 is configured L. Scale / H.
  • Page 47 Page GB 47/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value Alarm 2 action Range: 0 = Direct action (relay energized in alarm condition) TB1 = 1 1806 1 = Reverse action (relay TB2 = 1 de-energized in alarm condition)

  • Page 48: Alarm 3 (Output 4) Group (1900)

    Page GB 48/51 TITLE: RFS – User Manual 170.IU0.RFS.101 ALARM 3 (OUTPUT 4) GROUP (1900) Modbus Default DESCRIPTION Address Value Alarm 3 status Range: 0 = No alarm 1900 1 = Alarm Note: Available only if AL3 is configured L. Scale / H.

  • Page 49: General Specifications

    Page GB 49/51 TITLE: RFS – User Manual 170.IU0.RFS.101 Modbus Default DESCRIPTION Address Value Alarm 3 action Range: 0 = Direct action (relay energized in TB1 = 1 alarm condition) 1906 1 = Reverse action (relay TB2 = 1 de-energized in alarm condition)

  • Page 50: Digital Outputs Group (2000)

    Page GB 50/51 TITLE: RFS – User Manual 170.IU0.RFS.101 DIGITAL OUTPUTS GROUP (2000) Modbus DESCRIPTION Address Output 1 status Range 2000 0 = Output not energized 1 = Output energized Output 2 status Range 0 = Output not energized 1 = Output energized...

  • Page 51: Communication Group (2100)

    Page GB 51/51 TITLE: RFS – User Manual 170.IU0.RFS.101 COMMUNICATION GROUP (2100) Modbus Default DESCRIPTION Address Value Serial link device address Note: When you set a new value, it will become operative after an instrument resets or removing the CPI. If you made a request before the reset...
  • Page 52 T y p e S T D R a n g e Weight: - of the RFS = 140 g. u n i t d r i f t - of the common I/O unit = 110 g.
  • Page 53 Page GB 53/51 TITLE: RFS – User Manual 170.IU0.RFS.101 C) LINEAR INPUTS Read-out: programmable from -2000 to +4000. Decimal point: programmable in any position CONTROL ACTIONS Burn out: the instrument shows the burn out condition as an underrange condition for 4-20 Control action: PID + SMART mA, 0-60 mV and 12-60 mV input types.

  • Page 54: Maintenance

    Function: Alarm 2 output. parity or 8 bit odd parity Type: relay with SPDT contact Slave number: up to 120 RFS unit could be Contact rated: 3 A at 250 V AC on resistive connected to the same RS-485 load.

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