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MCD Modbus Module Instructions
INSTALLATION INSTRUCTIONS: MCD MODBUS MODULE
Order Code: 175G9000
1. Introduction
Danfoss soft starters can be controlled and monitored across an RS485 serial communication
network using the Modbus RTU and AP ASCII protocols.
For users requiring simple control of MCD 200 and MCD 500 soft starters using Modbus RTU or AP
ASCII, the instructions below describe the installation and operation of the Modbus Module.
MCD 3000 soft starters have AP ASCII protocol support built in - see the MCD 3000 Users Manual for
details of message formats. The MCD 3000 supports Modbus RTU control when used in conjunction
with a Remote Operator.
This document describes Modbus and AP ASCII messaging and
the Remote Operator and use it as a Modbus RTU or AP ASCII slave device.
2. Installation
1.
Remove control power and mains supply from the soft starter.
2.
Attach the Modbus Module to the starter as shown.
3.
Apply control power to the soft starter.
Remove the Modbus Module using the following procedure:
1.
Disconnect the RS485 cable from the module.
2.
Remove control power and mains supply from the soft starter.
3.
Push a small flat-bladed screwdriver into the slots at the top and
bottom of the module and depress the retaining clips.
4.
Pull the module away from the soft starter.
MCD 200
CAUTION
Remove mains and control voltage from the soft starter before attaching or removing
accessories. Failure to do so may damage the equipment.
MG.17.F5.02 - VLT® is a registered Danfoss trademark
Appendix A
describes how to connect
MCD 500
Introduction
1