Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 142)

6.4 Others
6-23
6
6.4.4 Using More Than One SERVOPACK
The following diagram is an example of the wiring when more than one SERVOPACK is used.
Connect the alarm output (ALM) terminals for the three SERVOPACKs in series to enable alarm detection relay
1RY to operate.
When the alarm occurs, the ALM output signal transistor is turned OFF.
Multiple servos can share a single molded-case circuit breaker (QF) or noise filter. Always select a QF or noise
filter that has enough capacity for the total power capacity (load conditions) of those servos. For details, refer to
2.5.2 Molded-case Circuit Breaker and Fuse Capacity.
Power supply
Power
ON
Power
OFF
SERVOPACK
Servomotor
Servomotor
Servomotor
SERVOPACK
SERVOPACK
R T
QF
1KM
1KM 1RY
SUP
1KM
1RY
+24V
L1
L2
C1
CN1
34 ALM+
35 ALM -
0V
C2
Noise
filter
M
L1
L2
C1
CN1
34 ALM+
35 ALM -
C2
L1
L2
C1
CN1
34 ALM+
35 ALM -
C2
M
M
AC/DC
converter
Note: Wire the system, so that the phase-S power supply wil be the ground phase.