Mitsubishi QJ71MB91, User Manual

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[WIRING PRECAUTIONS]
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DANGER
Be sure to shut off all phases of the external power supply used in the system before wiring.
Failure to do so may result in an electric shock or damage to the product.
When powering up the system for operation after completing the wiring, make sure that supplied
terminal covers are correctly attached. Not attaching the terminal covers could result in an electric
shock.
CAUTION
Properly crimp, press-fit or solder the wires of the connector for external connections using the
manufacturer-specified tools.
Incomplete connection may cause a short circuit, fire, or malfunction.
Fully connect the connector to the module.
Before wiring the module, check the rated voltage and the terminal layout. Connecting a power
supply that is different from the rating or incorrectly wiring the product could result in fire or damage.
Make sure to place the communication and power cables to be connected to the module in a duct or
fasten them using a clamp. If the cables are not placed in a duct or fastened with a clamp, their
positions may be unstable or moved, and they may be pulled inadvertently.
This may damage the module and the cables or cause the module to malfunction due to poor cable
connection.
Wire the module correctly after confirming the type of the connected interface. If the cable is
connected to a different interface or wired incorrectly, it may cause a fire or breakdown.
Tighten the terminal screws within the range of the specified torque. If the terminal screws are loose,
it may result in a short circuit or malfunction. If the screws are tightened too much, it may cause
damage to the screw and/or the module, resulting in a drop of the module, short circuit or
malfunction.
When removing a communication or power cable from the module, do not pull the cable part. For the
cable with connector, hold the connector part connected to the module. When removing the cable
connected to the terminal block, first loosen the screws on the terminal block. Pulling a cable
connected to the module may damage the module and/or cable and cause a malfunction due to poor
contact.
Carefully prevent foreign matter such as wire chips from entering the module.
Failure to do so may cause a fire, breakdown or malfunction of the module.
A protective film is attached onto the module top in order to prevent foreign matter such as wire chips
from entering the module while wiring.
Do not remove this protective film during wiring work. However, be sure to remove it for heat
dissipation before system operation.