3.1 Wiring Precautions
3.1.2 Countermeasures against Noise
3
Wiring and Connection
s
3-7
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.
*1.
For the ground wire, use a wire with a thickness of at least 2.0 mm
2
(preferably, flat braided copper wire).
*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.
Noise Filter Wiring and Connection Precautions
Noise Filter Wiring
and Connection Precautions
Always observe the following precautions when wiring or connecting Noise Filters.
•
Separate input lines from output lines. Do not place input lines and output lines in the same
duct or bundle them together.
UA/UB
WA/WB
VA/VB
L2
L1
L
3
L2C
L1C
CN2A/
CN2B
CN1
S
ERVOPACK
S
ervomotor
Operation relay
s
equence
U
s
er
s
ignal generator
DC
power
s
upply
(Grounding plate)
External ground: U
s
e a dedicated ground.
2.0 mm
2
min.
200 VAC
Noi
s
e Filter
*3
*1
*2
2.0 mm
2
min.
2.0 mm
2
min.
ENC
(FG)
M
Noi
s
e
Filter
*3
Noi
s
e
Filter
Noi
s
e
Filter
Noi
s
e
Filter
Noi
s
e
Filter
S
eparate the circuit
s
.
×
Grounding plate
Grounding plate
Grounding
plate
Grounding plate