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MELSEC-Q
4 SETUP AND PROCEDURES BEFORE OPERATION
4.4 Wiring
The wiring precautions and examples of module connection are provided below.
4.4.1 Wiring Instructions
In order to optimize the functions of the Q64RD/Q64RD-G 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
Q64RD/Q64RD-G to avoid the influence of the AC side surges and inductions.
(2) Do not run the module cables near, or bundle them with, the main circuit and high-
voltage cables and the load cables from other than the programmable controller.
Not doing so will make the module more susceptible to noises, surges and
inductions.
(3) Earth the shielded of the shielded cable to FG of the programmable controller.
However, depending on the external noise conditions, external earthing on the
RTD side may be recommended.
(4) Insulation-sleeved crimping terminals cannot be used with the terminal block.
It is recommended to fit mark tubes or insulation tubes to the wire connection
parts of the crimping terminals.
Summary of Contents for q64rd
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