Yaskawa DR2 Sigma Servo - Manual (Page 161)

APPLICATIONS OF Σ-SERIES PRODUCTS
3.8.4 Using Regenerative Units
148
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) Multiple servos can share a single MCCB or noise filter. Always select a MCCB or noise
filter that has enough capacity for the total power capacity (load conditions) of those ser-
vos. For details, refer to page 142.
MCCB Noise filter
3.8.4 Using Regenerative Units
Note Regenerative unit can be applied only to 200V 30W to 200W (types DR2-A3A,
A5A, 01A, 02A). For 200V 400W, 750W and all types of 100V, regenerative unit
cannot be used.
1) “What is a Regenerative Unit?”
A regenerative unit is designed to safely consume electric energy that is generated when
the servomotor is rotated by the load.
Servopack Electric energy
Force
Energy
consumption Regenerative unit
3