User Manual Of EL7-EC** AC Servo
132
Dynamic braking method. Status after stopping: Free moving
Servo status
SRV-ST
Dynamic
brake
Motor power
Servo enabled
SRV-ON
Motor
rotation
Disabled
Enabled
Deactivated
Activated
Power OFF
Power ON
Input coupler
OFF
Input coupler
ON
Input coupler
OFF
Power OFF
Disabled
*1
*2
*3
Activated
Deactivated
t
Brake ON
BRK-OFF
Brake OFF
BRK-ON
Brake ON
BRK-OFF
Holding brake status
BRK
** 1. Status after stopping is as defined in Pr5.06.
2. SRV-ST signal is received when servo driver is enabled. Command input is not allowed yet.
3. Servo stopping method is as defined in Pr5.06; braking torque in opposite direction to decelerate
the motor is as defined in Pr5.11. 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).
4. BRK-ON signal doesn’t indicate the activation of holding brake but the validation of the signal.
Holding brake is not applied when BRK-ON signal is valid. Same idea goes for BRK-OFF signal.