6
3. IMPLEMENTATION AND INSTALLATION
3.1 Handling Precautions
(1) Do not drop or give a strong impact to the case.
(2) Do not remove the printed-circuit board of the module from the
case.
Doing so may cause a failure.
(3) Prevent foreign matter such as dust or wire chips from entering the
module.
Such foreign matter can cause a fire, failure, or malfunction.
(4) A protective film is attached to the top of the module to prevent
foreign matter, such as wire chips, from entering the module during
wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
(5) Tighten the screws such as module fixing screws with the following
ranges
*1
The module can be easily fixed onto the base unit using the hook at the top of
the module.
When using the programmable controller in an environment of frequent
vibrations, however, fix the module with a module fixing screw.
(6) When mounting the module to the base unit, insert the module
fixing projection into the fixing hole in the base unit, and mount the
module with using the hole as a supporting point.
Incorrect module mounting may cause a malfunction, failure, or
drop of the module.
(7) Before handling the module, touch a grounded metal object to
discharge the static electricity from the human body.
Failure to do so may cause the module to fail or malfunction.
3.2 Installation Environment
Refer to the user's manual of the CPU module used.
Table3.1 Tightening torque
Screw location
Tightening torque range
Module fixing screw (M3 screw)
*1
0.36 to 0.48N•m
Connector screw (M2.6 screw)
0.20 to 0.29N•m
