Handling; Handling Precautions - Mitsubishi QD75M1 User Manual

3. Handling

Use the PLC within the general specifications environment given in the CPU module
User's Manual to use.
Using the PLC outside the general specification range environment could lead to
electric shocks, fires, malfunctioning, product damage or deterioration.
While pressing the installation lever located at the bottom of module, insert the
module fixing tab into the fixing hole in the base unit until it stops. Then, securely
mount the module with the fixing hole as a supporting point.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the module in the environment of much vibration, tighten the module
with a screw.
Tighten the screws within the specified torque range.
Undertightening can cause a drop, short circuit or malfunction.
Overtightening can cause a drop, short circuit or malfunction due to damage to the
screws or module.
Completely turn off the externally supplied power used in the system before
installing or removing the module. Not doing so may damage the product.
Do not directly touch the module's conductive parts and electronic components of
the module. Touching the conductive parts and electronic components of the
module could cause an operation failure or give damage to the module.

3.1 Handling Precautions

(1) Since the module case is made of resin, do not drop it or subject it to strong impact.
(2) The module can easily be secured to the base unit using the hooks located at the top of
the module. However, if the module is to be placed in an area that is subject to strong
vibration or impact, we recommend that it is secured with module mounting screws (to
be provided by the user). In this case, tighten the module mounting screws within the
following torque range.
Module mounting screws (M3 12): Tightening torque range is from 0.36 to 0.48 (N m).
CAUTION
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