User Manual Of EL7-EC** AC Servo
138
Dynamic braking. Status after stopping: Free moving
Error
occurrence
Servo status
SRV-ST
Dynamic
brake
Motor power
Servo Ready
S-RDY
Servo Alarm
ALM
Motor
rotational
velocity
Normal
Error
Enabled
Disabled
Deactivated
Activated
Power ON
Power OFF
Ready
Not Ready
No Alarm
Alarm
*2
*1
Deactivated
t
Brake OFF
BRK-ON
Brake ON
BRK-OFF
Holding brake
status
BRK
**
1. Status after stopping is as defined in Pr5.10.
2. Servo stopping method is as defined in Pr5.10. Deceleration time t is determined by whichever
comes first between time set in Pr6.14 and time needed for motor to drop below velocity set in Pr4.39.
After deceleration time t, dynamic braking will be off and holding brake signal will be set to OFF
(Holding brake is activated. Although BRK-OFF signal is valid, actual activation of holding brake is
dependent on whether the motor comes with holding brake).
3. BRK-ON signal doesn’t indicate the activation of holding brake but the invalidation of the signal.
Holding brake is not applied when BRK-ON signal is valid. Same idea goes for BRK-OFF signal.