5.8 Special Wiring
5 -109
5.8.2 Wiring for Noise Control
J
J
Wiring Example
This Servopack uses high-speed switching elements in the main circuit. It may receive “switch-
ing noise” from these high-speed switching elements if wiring or grounding around the Servo-
pack is not appropriate. To prevent this, always wire and ground the Servopack correctly.
ThisServopack hasa built-in microprocessor (CPU), so it is necessary to protect it from external
noise as much as possible by installing a noise filter in the appropriate place.
The following is an example of wiring for noise control.
Note 1.
For ground wires connected to the casing, use a thick wire with a thickness of at least 3.5
mm
2
(0.005 in
2
) (preferably, plain stitch cooper wire).
2
.
For wires indicated by P , use twisted-pair wires whenever possible.
3
.
When using a noise filter, follow the precautions in
J
Using Noise Filters
.
M
(FG)
U
W
V
L2
L1
L3
L2C
L1C
CN2
CN1
Servomotor
D
Operation relay
sequence
D
Signal generation
circuit (provided
by user)
P
P
P
1L
F
AVR
(Ground)
*2
.
(Casing)
(Casing)
(Casing)
Wires of 3.5 mm
2
(0.005 in
2
) or more
*1.
(Casing)
((Ground plate)
2LF
3.5 mm
2
(0.005 in
2
)
min.
*1
(Casing)
AC200V
PG
Noise filter*3
*3
.
2 mm
2
(0.003 in
2
) min.
3.5mm
2
(0.005 in
2
) min.
*1
2.0 mm
2
(0.003 in
2
)
min.
Ground: Ground to an independent ground
(at least class-3 ground (100
W
max.))
3.5 mm
2
(0.005 in
2
)
min.
Servopack
SGDH-
5
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : [email protected]