Omron SJDE-ANA-OY - Noise Prevention

3.3 Precautions on Wiring
23
and short-circuit, or install an ground fault detector combined with a wiring circuit breaker for
ground protection.
3.3.6 Noise Prevention
 Example of Wiring for Noise Prevention
* 1. For the wires connected to the casings for installation purposes, use wires with a diameter of 3.5 mm
2
or
larger. Flat braided copper wires are recommended.
* 2. Use twisted pair wires for section P.
 Correct Grounding
• Servomotor frame grounding:
Be sure to connect the FG grounding terminal on the frame of the servomotor to the grounding ter-
minal on the SERVOPACK.
• Be sure to ground the grounding terminal of the SERVOPACK.
• If the wires of the servomotor’s main circuit are laid in a metal conduit, ground the conduit and the
grounding box.
One-point grounding must be used.
M
(FG)
U
W
V
L2
L1
CN2
CN1
SJDE
SERVOPACK
Servomotor
Operation relay sequence
P
P
P
1LF
AVR
(Grounding)
*2.
Casing
Casing
Casing
*1.
*1.
Casing
Grounding plate
Groudning: Ground to one point only.
Min. grounding resistance: 100 Ω
2LF
Min. wire
size
: 3.5 mm
2
Min. wire
size
: 3.5 mm
2
Min. wire
size
: 3.5 mm
2
Min. wire size:
3.5 mm
2
Min. wire size: 3.5 mm
2
2 mm
2
or larger
Casing
200 VAC
PG
Noise filter
*
1.
User signal generating circuit
TOEP_C710806_03A_1_0.book Seite 23 Montag, 2. Juli 2007 3:55 15