Wiring; Wiring Precautions - Mitsubishi Electric Melsec Q Series User Manual

4 SETUP AND PROCEDURES BEFORE OPERATION

4.4 Wiring

4.4.1 Wiring precautions

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The wiring precautions and examples of module connection are provided below.
In order to optimize the functions of the A/D converter module and ensure system
reliability, external wiring that is protected from noise is required.
Please observe the following precautions for external wiring:
(1) Use separate cables for the AC control circuit and the external input signals of
the Q64AD and Q68ADV(I) to avoid the influence of the AC side surges and
inductions.
(2) Do not mount the cables close to or bundle them with the main circuit line, a
high-voltage cable or a load cable from other than the programmable controller.
This may increase the effects of noise, surges and induction.
(3) Perform an one-point grounding for shielded lines and the shields of sealed
cables.
(4) A solderless terminal with insulating sleeve cannot be used for the terminal
block. Covering the cable-connection portion of the solderless terminal with a
marked tube or an insulation tube is recommended.
MELSEC-Q
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