Loading And Installation; Module Installation; Handling Instructions - Mitsubishi Electric MELSEC-Q Series User Manual

4. LOADING AND INSTALLATION

4.1

Module Installation

4.1.1

Handling instructions

The precautions when using the CPU, I/O module, special function
module, power supply module and base unit are provided below.
(1) Do not drop or allow any impact to the module case, memory card,
terminal block connector, or pin connector.
(2) Do not remove the printed-circuit board from the module case.
Doing so may cause failure.
(3) Use caution to prevent foreign matter, such as wire chips, from
entering the module during wiring.
If any foreign matter has entered the module, remove it.
(4) When using the extension base unit (QA1S6B), be sure to install
the power supply module. Although modules with light load may
operate without the power supply module, stable operation is not
guaranteed.
(5) Tighten the screws such as module fixing screws within the
following ranges.
QCPU-A module fixing screw (M3×12)
AnS series module mounting screw (M4)
I/O module terminal block mounting screw
(M3.5)
Power supply module terminal screw (M3.5)
(6) When using extension cables, do not install them together with the
main circuit cables (high voltage, large current), or bring them
close to each other.
(7) When installing the programmable controller in a control panel,
fully consider its operability, maintainability, and environmental
resistance. Securely mount all the MELSEC-Q series modules
used on the base unit. For details on the mounting method, refer to
the QCPU-A (A mode) User's Manual.
Screw
29
Tightening Torque
36 to 48 N•cm
78 to 118 N•cm
59 to 88 N•cm