YASKAWA SGD7S-1R9D Product Manual page 81

4.1 Wiring and Connecting SERVOPACKs
4.1.2 Countermeasures against Noise
Noise Filters
You must attach Noise Filters in appropriate places to protect the SERVOPACK from the
adverse effects of noise. The following is an example of wiring for countermeasures against
noise.
400 VAC
*1.
For the ground wire, use a wire with a thickness of at least 2.0 mm
*2.
Whenever possible, use twisted-pair wires to wire all connections marked with
*3.
Refer to the following section for precautions when using Noise Filters.
4-6
*3
Noise Filter
Noise Filter
2.0 mm 2
min.
Operation relay sequence
User signal generators
Noise Filter
Noise Filter Wiring and Connection Precautions on page 4-7
SERVOPACK
L1
L2
L3
*3
DC
24 V
power
0 V
supply CN1
*3 *2
DC
power
supply
2
2.0 mm min.
(Grounding plate)
*1
External ground: Use a dedicated ground.
2
(preferably, flat braided copper wire).
Servomotor
U
M
V
(FG)
W
CN2
ENC
2
2.0 mm
min.
.