Handling Precautions - Mitsubishi Electric MELSEC Q Series User Manual

5
SETTINGS AND PROCEDURES BEFORE
OPERATION
5.1.2
This section explains handling precautions for the Q series safety relay module.
(1) Module fixing screw
5
- 3 5.1 Q Series Safety Relay Module

5.1.2 Handling precautions

Handling precautions
Do not touch the terminals while power is on.
DANGER
Doing so could result in electric shock.
Turn off all phases of the external supply power used in the
system when cleaning the module or retightening the
terminal block mounting screws, terminal screws, or module
mounting screws.
Not doing so could result in electric shock.
Tighten a terminal block mounting screw and module
mounting screw within the specified torque range.
If the terminal block mounting screw is too loose, it may
cause a short-circuit, fire or malfunctions.
If too tight, it may damage the screw and/or the module,
resulting in a drop of the screw or module, a short circuit or
malfunctions.
If the module mounting screw is too loose, it may cause a
drop of the screw or module.
Over tightening the screw may cause a drop due to the
damage of the screw or module.
Be sure there are no foreign substances such as sawdust or
CAUTION
wiring debris inside the module.
Such debris could cause a fire, failure, or malfunctions.
Do not disassemble or remodel the module.
Doing so could cause a failure, malfunctions, injury, or fire.
If the product is repaired or remodeled by other than the
specified FA centers or us, the warranty is not covered.
Do not directly touch the module's conductive parts or
electronic components.
Doing so may cause malfunctions or a failure.
When disposing of this product, treat it as industrial waste.
Tighten the module fixing screws and terminal block mounting screws within the
following torque range.
Screw
Module fixing screw (M3)
Terminal block mounting screw (M2.6)
Specified torque range
0.36 to 0.48N m
0.40 to 0.50N m