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5 SETUP AND PREPARATION
5.2 Implementation and Installation
5.2.1 Handling precautions
5.2.2 Installation environment
5 - 4
This section describes handling precautions to be taken from unpacking to mounting
the QJ71DN91.
For more details, refer to the User's Manual of your programmable controller CPU.
(1) Do not drop the module casing or connector, or do not subject it to strong
impact.
(2) Do not remove the printed-circuit board of the module from its case.
Doing so may cause a failure.
(3) Be careful to prevent foreign matter such as wire chips from entering the
module.
It may cause a fire, failure or malfunction.
(4) The module has an ingress prevention label on its top to prevent foreign
matter, such as wire chips, from entering the module during wiring. Do not
peel this label during wiring. Remove it for heat dissipation before system
operation.
(5) Tighten the screws such as module fixing screws within the following ranges.
Screw location
Module fixing screw (usually not required)
*1
(M3 screw)
DeviceNet connector screw (M2.5 screw)
DeviceNet connector wiring screw
*1: The module can be easily fixed onto the base unit using the hook at the top of the
module.
However, it is recommended to secure the module with the module fixing screw if the
module is subject to significant vibration.
(6) Be sure to insert the module fixing projection into the hole in the base unit.
Then, securely mount the module.
Incorrect module mounting may cause the module to malfunction, fail or fall
off.
For more details on the installation environment, refer to the User's Manual of your
programmable controller CPU.
MELSEC-Q
Tightening torque range
0.36 to 0.48 N•m
0.20 to 0.30 N• m
0.608 to 0.823 N• m
5 - 4
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Troubleshooting
