Lenze L-force HighLine C 8400 Series Reference Manual page 553

8.12.3 Process when brake is released
1. The controller inhibit is deactivated.
2. The magnetic field required for the holding torque is created in the motor (is already
available when a synchronous machine is used).
3. The bMBrakeReleaseOut trigger signal for holding brake switching element is set to
TRUE for releasing the brake.
4. After the brake opening time has elapsed:
– The bMBrakeReleased status signal ("brake released") is set to TRUE.
– In the
accelerated speed setpoint.
– In the operating modes with setpoint request via control signal (operating modes
"Homing",
brake release at 0.
5. After the waiting time set in
starts again (if activated via bit 5 in C02582).
Time diagram
 Feedforward control
 Setpoint synchronisation
 Follow setpoint
nSpeedSetValue_a
Œ 
Œ Ž
bMBrakeReleaseOut
bMBrakeReleased
C02581/1: Switching threshold
C02581/2: Hysteresis for release
C02581/3: Hysteresis for application
Time slot for feedforward control/magnetising
C02589/2: Release time
C02610/1: Ramp time for approaching the setpoint speed
[8-32] Release holding brake in automatic mode via speed threshold
Related topics:
Feedforward control of the motor before release
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
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"Speed follower" operating mode, the drive synchronises to the already
"Manual jog" and "Positioning"), the ramping process starts after the
C02589/3
0
Œ
0

CINH
L
8400 HighLine C | Reference manual
Basic drive functions (MCK)
has additionally expired, the status monitoring
0
nMotorSpeedAct_a
nSpeedSetValue_a_
  ‘
( 557)
Holding brake control
t
t
t
t
553