Mitsubishi MELSEC-Q Series User Manual page 96

5
PROCEDURES AND SETTINGS BEFORE
OPERATION
(8) When the QD72P3C3 connection cable is located close to the power line
Connector
(A6CON1)
T o the
QD72P3C3
5
- 8 5.4 Wiring
5.4.1 Wiring precautions
(less than 100mm (3.94inch)), use a shielded cable for noise
suppression. Be sure to ground the shield of shielded cables to a
control panel on the QD72P3C3 side. (A wiring example is shown on the
next page.)
[Wiring example of shielded cables]
Wiring example for noise suppression using the A6CON1
To external
device
(For three
drive units)
The length between the connector
and the shielded cables should be
the shortest possible.
[Processing example of shielded cables]
Connecting FG wire and shielded cables
Take off the insulating tube of each shield and
electrically connect the shields of the cables
with conductive tapes.
Cover the conductive part
with insulating tape.
Connector
Shielded
cable
T o external
device
T o drive unit t
Ground the FG wire of 2 mm or more at the
2
shortest length (Securely provide grounding
on the QD72P3C3 side to the control panel).
Solder the shield of any of the
shielded cables to the FG wire.
Drive unit