Yaskawa SGDB - Manual (Page 161)

3.8 Special Wiring
149
3.8.3 Using More Than One Servo Drive
J Example of Wiring More than One Servo Drive
Power supply
Noise filter
Power
OFF
Power
ON
SGDB
SERVOPACK
SGMj
servomotor
Note Wire the SERVOPACK
so that terminal S is the
grounding phase.
SGMj
servomotor
SGMj
servomotor
SGDB
SERVOPACK
SGDB
SERVOPACK
Connect the alarm output (ALM) terminals for the three SERVOPACKs in series to en-
able alarm detection relay 1RY to operate. This is because ALM is a logical complement
output signal, so the output transistor is turned OFF when the system enters an alarm
state.
The output transistor is turned OFF when the ALM output signal invokes alarm state.
3