Wiring; Wiring Precautions - Mitsubishi QD60P8-G User Manual

4 SETUP AND PROCEDURE BEFORE OPERATION

4.4 Wiring

4.4.1 Wiring precautions

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This section explains how to wire the pulse generator to the QD60P8-G.
The following are the precautions for wiring the QD60P8-G. Read these precautions
together with "Section 4.1 Handling precautions" to ensure work safety.
In order to fully utilise the functions of the QD60P8-G and ensure system reliability,
external wiring having a minimum of noise effect must be provided.
The precautions regarding external wiring are described below.
(1) Use separate cables with the AC control circuit and QD60P8-G's external input
signals to avoid the influence of AC side surges and induction.
(2) Do not run the cable close to, or bundle them with, the main circuit and high-
voltage cables and the load cables from other than the programmable controller.
Failure to do so will make the cables susceptible to noise, surges and induction.
(3) If there may be the effect of noise when a cable to be connected to the QD60P8-G
and the power line are installed close to each other, use a general shielded
twisted pair cable as a countermeasure against noise.
The shield must be grounded on the QD60P8-G side.
(4) No soldereless terminals with insulation sleeves can be used on the terminal block.
It is recommended to cover the electric wire connecting section of each solderless
terminal with a marking tube or insulating tube.
(5) The cables connected to the QD60P8-G should be placed in a duct or fixed. Not
doing so can cause the QD60P8-G or cables to be damaged when the cables
swing, move or are pulled carelessly, for example, or to malfunction due to poor
cable connection.
MELSEC-Q
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