Implementation And Installation - Mitsubishi QJ71PB92V-U-HW User Manual

3. Implementation and Installation

This section provides the handling precautions, from unpacking to installation
of the QJ71PB92V.
For details on implementation and installation of the QJ71PB92V, refer to the
"QCPU User's Manual (Hardware Design, Maintenance and Inspection)."
3.1 Handling precautions
The following are precautions for handling the QJ71PB92V as a unit.
(1) Do not drop the module case or subject it to heavy impact since it is
made of resin.
(2) Do not remove the printed-circuit board of each from its case.
This may cause a failure in the module.
(3) Be careful not to let foreign objects such as wire burrs enter the
module during wiring.
In the even any foreign object enters, remove it immediately.
(4) The module has an ingress prevention label on its top to prevent
foreign matter, such as wire offcuts, from entering the module during
wiring.
Do not peel this label during wiring.
Before starting system operation, be sure to peel this label because
of heat dissipation.
(5) Before touching the module, always touch grounded metal, etc. to
discharge static electricity from human body, etc.
Not doing so can cause the module to fail or malfunction.
(6) Tighten the screws such as module fixing screws within the following
ranges.
Module fixing screw (M3 screw) *1
PROFIBUS cable connector screw (#4-40 UNC
screws)
*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.
Table 3.1 Screw tightening torque
Screw location
4
Tightening torque range
0.36 to 0.48N•m
0.20 to 0.28N•m