YASKAWA SGDA series - Using more than One Servo Drive

3.8 Special Wiring
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3.8.3 Using More Than One Servo Drive
Example of Wiring More than One Servo Drive
Power supply
Noise filter
Power
OFF
Power
ON
Servopack
Servomotor
Servomotor
Servomotor
Servopack
Servopack
1) Connect the alarm output (ALM) terminals for the three Servopacks in series to enable
alarm detection relay 1RY to operate. This is because ALM is a logical complement out-
put signal, so the output transistor is turned OFF when the system enters an alarm state.
2) Since the Servopack power supply is a capacitor input type, connecting P and N termi-
nals in parallel produces high power capacity as a whole, enhancing regenerative perfor-
mance.
3