Wiring - Mitsubishi Electric MELSEC Q Series User Manual

4 INSTALLATION, WIRING, START-UP, AND MAINTENANCE

4.2 Wiring

Completely turn off the externally supplied power used in the system before installation or wiring.
Not doing so could result in electric shock or damage to the product.
Check the layout of the terminals and then properly route the wires to the module.
Solder connector for external input signal cable properly. Insufficient soldering may cause malfunction.
Be careful not to let foreign matters such as sawdust or wire chips get inside the module.
These may cause fires, failure or malfunction.
The top surface of the module is covered with protective films to prevent foreign objects such as cable
off cuts from entering the module when wiring. Do not remove this film until the wiring is complete.
Before operating the system, be sure to remove the film to provide adequate ventilation.
When removing the cable or power supply cable from the module, do not pull the cable.
When removing the cable with a connector, hold the connector on the side that is connected to the
module. Pulling the cable that is still connected to the module may cause malfunction or damage to the
module or cable.
The external input signal cable of the QD74MH and SSCNET cable should not be routed near or
bundled with the main circuit cable, power cable and/or other such load – carrying cables other than
those for the PLC. These cables should be separated by at least 100mm (3.94inch) or more.
They can cause electrical interference, surges and inductance that can lead to mis-operation.
The shielded cable for connecting QD74MH can be secured in place.
If the shielded cable is not secured, unevenness or movement of the shielded cable or careless pulling
on it could result in damage to the QD74MH, servo amplifier or shielded cable or defective cable
connections could cause mis-operation of the unit.
The precautions for wiring are given below.
DANGER
CAUTION
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MELSEC-Q