Table of Contents
Advertisement
4.3
Wiring
The precautions for wiring the LD75 are given below. Refer to this section as well as Page 82, Section 4.1.3 when
carrying out the work.
4.3.1
Wiring precautions
(1) Check the terminal layout before wiring to the LD75, and connect the cables
correctly.
For the terminal layout, refer to Page 73, Section 3.4.2.
(2) Connectors for external devices must be crimped with the tool specified by the
manufacturer, or must be correctly soldered. Incomplete connections may
cause short circuit, fire, or malfunction.
(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 LD75 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 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 LD75 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 LD75 or the drive unit may result in malfunction or damage to
the module, drive unit, or cable.
(7) Do not install the external I/O signal lines of the LD75 or connection cable to
the drive unit together with the main circuit line, power line, or load line other
than that for the programmable controller. Keep a distance of 100mm or more
between them. Failure to do so may result in malfunction due to noise, surge,
or induction.
84
Advertisement
Table of Contents
Troubleshooting
