Lenze E94AxPExxxx - Manual (Page 568)

12 Basic drive functions
12.12 Brake control
568
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
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12.12.2.8 Speed feedforward control via ramp function for V/f control
For the V/f control there is the possibility of carrying out a feedforward control by means of a speed
which is generated via a parameterisable ramp.
Settings:
1. Go to C02602 and set the selection "1: Speed" as source for the feedforward control.
2. Go to C02603 to set the speed threshold from which on the brake is to be opened.
• C02604 can be used to parameterise a second speed threshold which can be activated by
setting BRK_bStartingTorque2 to TRUE.
3. Go to C02600 and set the acceleration time for the feedforward control.
4. Go to C02601 and set the reference for the acceleration time
(0: Motor reference value, 1: Starting current value).
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Note!
The operation of vertical drives/hoists is only supported up to 55 kW by the V/f control!