12 basic drive functions – Lenze E94AxPExxxx User Manual
Page 573
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
573
12
Basic drive functions
12.12
Brake control
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Only activate brake below threshold for brake activation
When
= "1", the brake remains released until the threshold set in
for brake
activation has been reached to protect the brake from excessive wear.
• The braking action only takes places due to the friction in the load mechanics.
• Only when the motor speed has reached the threshold for brake activation, the brake will be
closed.
Stop!
Do not set the threshold for brake activation in
too high to protect the motor
holding brake from wear!
Note!
The following applies to the encoderless motor control types :
If V/f control without encoder or sensorless vector control is selected, there is no speed
information for the controller in the case of pulse inhibit, therefore the threshold set in
for the brake activation is not effective in this case.
In order to avoid that the motor holding brake is closed in case of pulse inhibit, a waiting
time for the brake activation can be parameterised in
. In case of pulse inhibit,
the motor holding brake is then only triggered to close after this application time has