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Drehmo i-Matic Installation And Operating Manual

Electrical actuator with integral controls
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Supplement operating manual for DREHMO i-Matic actuators with integrated
   
DREHMO
Electrical actuator with integral controls
Supplementary operating manual for actuators with MODBUS interface
MODBUS
Modbus redundant interface electronic
built in the electronic housing
Installation Manual
Operating Manual
INFORMATION
This installation manual should only be used in conjunction with the operating manual for drives!
This manual must be kept for future use.
Wenden, 21.03.12
Prepared by: Ste
MODBUS fieldbus interface
i - Matic
Electronic housing
Compact plug
Gearbox
Drive output
Handwheel
part number: 166 671
Version 03
Date: Oct. 18
Local controls
Motor
th
, 2006
Page 1 of 18

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Summary of Contents for Drehmo i-Matic

  • Page 1 Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface     DREHMO i - Matic Electrical actuator with integral controls Supplementary operating manual for actuators with MODBUS interface Electronic housing MODBUS Compact plug Local controls...

  • Page 2: Table Of Contents

    Grounding of the cables´ shields in case of copper cable use ..........14 2.5.1.4 Interface with fibre optic connection ..................15 2.5.2 Actuator i-Matic for Ex-Zone acc. ATEX device category 2 G – DiM-X1X ......16 2.5.2.1 Connection with copper cable ....................16 2.5.2.2 Connection with fibre optic cable ...................

  • Page 3: Introduction

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 1 Introduction This document describes the expansion of modbus RTU functionality for i-Matic actuator. 2 Interface technology 2.1 Physical interface The physical interface is in accordance to the MODBUS over Serial Line Specification & Implementation guide that can be found on the following web site: http://www.modbus.org/...

  • Page 4: Supported Function Codes

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.2 Supported function codes Among the list of possible modbus functions as described in the modbus guidelines, the following function codes are supported: FC 01 Read Coil Status...

  • Page 5: Accesses For Master Input Data ( Actuator Feedback Signals)

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.3.1 Accesses for master input data ( actuator feedback signals) The following table gives detailed information about the addresses of the actuator feedback signals. Register Bit Coil Signal...
  • Page 6 Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface Register Bit Coil Signal Meaning 0x204 Torque warning OPEN Torque higher than torque warning level Torque warning CLOSED Torque higher than torque warning level No signal of reference value...
  • Page 7 Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface telegram example FC02 read 128 bit as input to master (128 bit feedback) Request C8 02 00 00 00 80 68 33 Checksum number of inputs (discrete feedback bits - 128)

  • Page 8: Accesses For Master Output Data ( Actuator Command Signals)

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.3.2 Accesses for master output data ( actuator command signals) Register Bit Coil Signal Meaning 0x201 0..7 1..8 Reference value low byte Reference value 0...1000 ppt 8..15 9..16...
  • Page 9 Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface database address (decimal 512) function code 06 write single register (commands as integer) slave address 200 in example The actuator commands can also be read back for checking purposes with the function codes FC 01 (Read Coil Status) or FC 03 (Read Holding Registers).

  • Page 10: Parameterisation

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.4 Parameterisation The modbus relevant settings can be changed menu driven using the local control unit. The parameters are to be found in the menu tree under Menu\Parameters\Interface\Modbus.

  • Page 11: Fault Messages

    MODBUS fieldbus interface 0.1seconds in the range from 1 to 255 (0.1 to 25.5 seconds). In case of fail-safe the actuator action can be parameterised as explained in the i-Matic instruction manual. 2.4.5 Fault messages Fault messages can be reset depending on the active fault by :...

  • Page 12: Electrical Connection

    As an example for explanation, the cable assembly for i-Matic with redundant field bus and optional two analogue and four digital process inputs as inner parts of the compact plug is given below.
  • Page 13 Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface Insight view on DREHMO i-Matic compact plug Compact plug housing Mounting plate with electric assembly (front side view) Power connector Control connector Wiring board Slide switches for bus termination...

  • Page 14: Bus Termination

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.5.1.2 Bus termination The termination of the bus line can be done individually for the channels 1, 2 by setting the slide switches S3, S4 on the connection board DiM-19 in the compact plug. If the termination on one of the channels is activated, the outgoing line of this channel is disconnected from the master.

  • Page 15: Interface With Fibre Optic Connection

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.5.1.4 Interface with fibre optic connection Actuators for ordinary surroundings (Non EX) may have an extended compact plug to incorporate a special fibre optic interface board. The connection of the fibre optic cables to the interface board is shown in the...

  • Page 16: Actuator I-Matic For Ex-Zone Acc. Atex Device Category 2 G - Dim-X1X

    The bus terminator always has to be provided near or downstream of the last bus device for correct bus termination. If the last bus device is an i-Matic type DREHMO actuator, the terminator can be activated by connecting terminals Tx+ with Bx and Tx- with Ax (see next picture), (x = number of channel).

  • Page 17: Connection With Fibre Optic Cable

    Supplement operating manual for DREHMO i-Matic actuators with integrated MODBUS fieldbus interface 2.5.2.2 Connection with fibre optic cable Devices of category 2 G/D for explosive areas have the connection solely by rail mounted screw terminals. The fibre optic converter inside the extended safety compartment is powered by the electronic unit. The converter is pressure proof sealed, and the optical interface is intrinsically safe.

  • Page 18: Interface To External Sensor - Process Inputs

    MODBUS fieldbus interface 2.6 Interface to external sensor - process inputs Actuators of type i-Matic can be equipped with an optional interface for an external sensor. The interface consists of four discrete inputs (24 V DC), and two analogue inputs (4...20mA).

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