Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 225)

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Firmware 1.37 - 09/2006 225
9400 HighLine | Parameter setting & configuration
Basic drive functions
Brake control | Mode 2/12: Automatic control of the brake
9.11.4.2 Process when brake is released
The following process occurs when a basic function is requested which causes the drive to
traverse:
1. The controller inhibit is deactivated.
2. A magnetic field is created in the motor required for the holding torque (is already
available in synchronous machines).
3. The precontrol torque is loaded in the speed controller.
4. When the actual torque has reached 90 % of the precontrol torque:
– The output BRK_bReleaseBrakeOut is set to TRUE for releasing the brake.
– Monitoring of the brake module is deactivated temporarily.
– Monitoring of the status input is deactivated temporarily (if switched active via
C02583 ).
– The lapse of brake opening time starts.
5. After the brake opening time has elapsed:
– The output BRK_bBrakeReleased is set to TRUE.
– The requested basic function is enabled.
6. After the additional waiting time set for the status monitoring in C02591 has elapsed:
– Monitoring of the brake module is active again.
– Monitoring of the status input is active again (if switched active via
C02583 ).