4 - 5 4 - 5
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 precautions
In order to optimize the functions of the D/A conversion 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 alternating current and the external output signal for the
D/A conversion module in order to avoid AC surges and induction effects.
(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 PLC. This may increase the
effects of noise, surges and induction.
(3) Perform a 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.
POINT
When using Q68DAV or Q68DAI, if it is difficult to wire FG terminals due to the
limited installation space, use FG terminal L-shaped metal fitting.