Mitsubishi Electric MELCEC Q Series User Manual page 141

9. LOADING AND INSTALLATION
(2)
CAUTION
Installing/removing modules other than the QCPU-A
Insert the module fixing projection into the fixing hole in the base unit and then
tighten the module fixing screw within the specified torque.
When no screw is tightened, even if the module is installed correctly, it may cause
malfunctions, a failure or a drop of the module.
Tightening the screw excessively may damage the screw and/or the module,
resulting in a drop of the module, a short circuit or malfunctions.
Be sure to shut off all phases of the external power supply used by the system
before mounting or removing the module.
Failure to do so may damage the module.
Do not directly touch the conductive part or electronic components of the module.
Doing so may cause malfunctions or a failure of the module.
(a) Installing modules other than the QCPU-A
Insert the module
fixing projection into
the fixing hole on the
base unit.
Press the module in
the direction of the
arrow and attach it to
Module fixing
the base unit.
hole
Check that the module
is securely inserted into
the base unit. Secure
the module with a
module mounting
screw.
Completion
Base unit
Module
connector
Module mounting screw
Base unit
9 - 9
Module
Module fixing
projection
Module