Handling Precautions; Wiring; Wiring Precautions - Mitsubishi MELSEC-Q Q62DAN User Manual

4. Handling Precautions

(1) Do not drop the module case or subject it to heavy impact.
(2) Do not remove the PCB of the module from its case. Doing so may cause
the module to fail.
(3) Be careful not to let foreign particles such as swarf or wire chips enter the
module. They may cause a fire, mechanical failure or malfunction.
(4) The top surface of the module is covered with a protective film to prevent
foreign objects such as wire burrs from entering the module during wiring.
Do not remove this film until the wiring is complete. Before operating the
system, be sure to remove the film to provide adequate heat ventilation.
(5) Tighten the screws such as module fixing screws within the following
ranges.
Loose screws may cause short circuits, failures, or malfunctions.
Module fixing screw (M3 screw)
Terminal block screw (M3 screw)
Terminal block mounting screw (M3.5 screw)
FG terminal screw (M3 screw)
*1: The module can be easily fixed onto the base unit using the hook at the
top of the module.
However, it is recommended to secure the module with the module
fixing screw if the module is subject to significant vibration.
*2: Q68DAVN, Q68DAIN only

5. Wiring

5.1 Wiring precautions

In order to optimize the functions of the D/A 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 D/A converter module 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 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.
Screw location
*1
*2
6
Tightening torque
range
0.36 to 0.48 N·m
0.42 to 0.58 N·m
0.66 to 0.89 N·m
0.42 to 0.58 N·m