Mitsubishi QD75P1N User Manual

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MELSEC-Q
4 INSTALLATION, WIRING AND MAINTENANCE OF THE PRODUCT
4.3 Wiring
The precautions for wiring the QD75 are given below. Refer to this section as well as
"4.1.3 Handling precautions" when carrying out the work.
4.3.1 Wiring precautions
(1) Always confirm the terminal layout before connecting the wires to the QD75.
(For the terminal layout, refer to Section 3.4.2 "Signal layout for external device
connection connector".)
(2) Correctly solder the external wiring connector. An incomplete soldering could lead
to malfunctioning.
(3) Make sure that foreign matter such as cutting chips and wire scraps does not
enter the QD75. Failure to observe this could lead to fires, faults or
malfunctioning.
(4) A protective label is attached on the top of the QD75 to avoid foreign matter such
as wire scraps from entering inside during wiring process. Do not remove the label
until the wiring is completed. Before starting the system, however, be sure to
remove the label to ensure heat radiation.
(5) Tighten the connector screws within the specified torque range.
Undertightening can cause short circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short
circuit, fire, or malfunction.
(6) When disconnecting the cable from the QD75 or the drive unit, do not pull the
cable by the cable part. Hold the connector part of the cable. Pulling the cable
connected to the QD75 or the drive unit may result in malfunction or damage to
the module, drive unit, or cable.
(7) Do not bundle or adjacently lay the connection cable connected to the QD75
external I/O signals or drive unit with the main circuit line, power line, or the load
line other than that for the programmable controller. Separate these by 100mm as
a guide. Failure to observe this could lead to malfunctioning caused by noise,
surge, or induction.
(8) The shielded cable for connecting QD75 can be secured in place.
If the shielded cable is not secured, unevenness or movement of the shielded
cable or careless pulling on it could result in damage to the QD75 or drive unit or
shielded cable or defective cable connections could cause mis-operation of the
unit.
(9) If the cable connected to the QD75 and the power line must be adjacently laid
(less than 100mm), use a shielded cable. Ground the shield of the cable securely
to the control panel on the QD75 side.
(A wiring example is given on the next
page.)

Mitsubishi QD75P1N Specifications

General

Brand	Mitsubishi
Model	QD75P1N
Category	Controller
Language	English