Chapter6 Pre-Operational Procedures And Settings; Handling Precautions; Pre-Operational Procedures And Settings - Mitsubishi Electric QJ71MB91 User Manual

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PRE-OPERATIONAL PROCEDURES AND SETTINGS

CHAPTER6 PRE-OPERATIONAL PROCEDURES AND
This chapter explains the procedures and setting method for operating the QJ71MB91 in a
system.

6.1 Handling Precautions

This section explains the precautions for handling the QJ71MB91.
Screw
Terminal screw for RS-422/485 terminal block
(M3 screw)
Mounting screw for RS-422/485 terminal block
(M3.5 screw)
RS-232 cable connector screw (M2.6 screw)
Module fixing screw (normally not required)
*1
(M3 screw)
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- 1 6.1 Handling Precautions
SETTINGS
POINT
1. For use of the QJ71MB91, read the safety precautions provided in the first
pages of this manual.
2. The QJ71MB91 implementation and installation environment are the same as
those of the programmable controller CPU.
Refer to the following manual regarding the QJ71MB91 implementation and
installation environment.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
1) Since the case of the QJ71MB91 is made of resin, do not drop or give it hard
impact.
2) Before handling modules, touch a grounded metal object to discharge the
static electricity from the human body.
Failure to do so may cause failure or malfunctions of the module.
3) Tighten the screws such as module fixing screws within the following ranges.
Table6.1 Tightening torque
Tightening torque range
* 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.
0.42 to 0.58 N m
0.66 to 0.89 N m
0.20 to 0.39 N m
0.36 to 0.48 N m
Remarks
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-
Screw hole depth:L=3.2mm or less
(Internal length from the surface)
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