Using More Than One Servopack - YASKAWA SGDH User Manual

6.4.5 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
2.6.2 Molded-case Circuit Breaker and Fuse Capacity.
Power supply
R S T
QF
Noise
filter
1KM
Note: Wire the system, so that the phase-S power supply will be the ground phase.
Power
Power
ON
OFF
1RY 1KM
1KM
SUP
L1
L2
L3
SERVOPACK
L1C
L2C
+24V
CN1
1RY
31 ALM+
32 ALM -
L1
L2
L3
SERVOPACK
L1C
L2C
CN1
31 ALM+
32 ALM -
L1
L2
L3
SERVOPACK
L1C
L2C
CN1
31 ALM+
32 ALM -
0V
6-27
6.4 Others
Servomotor
M
Servomotor
M
Servomotor
M
6