106 Chapter 7 - Parameters Description User Manual
Overvoltage Configuration
P.360 OV prevention (Overvoltage prevention)
During fast deceleration or in case of deceleration with high inertia load, it is possible to prevent the drive trip for
overvoltage alarm, by the enabling of this function.
Performing this control, the drive will act as follows:
detection of the overvoltage level, without storing and displaying the alarm.
disabling the inverter output bridge; the motor will coat to stop and DC-link will decrease toward safe values.
automatic enabling of the Autocapture function, and engaging of the motor at the last frequency value,
detected before the alarm.
For corrent operations it is necessary to enter the proper settings of the Autocapture parameters:
P.321 Autocapture Ilim
P.322 Demagnetiz time
P.323 Autocap f scan t
P.324 Autocap V scan t
normal operation is rersumed and the motor will be stopped following the programmed ramp.
if during the stop, the load inertia leads again the DC bus at the limit level, the procedure described above
will be iterated.
P.223
n
t
Coast to Stop
VDClink
t
0V Thr
Rated
DClink
Pickup
Ramp Profile Set
Figure 7.6.13: Overvoltage Prevention
The "overvoltage " alarm will be displayed with the message "OV".
A signalling of the "overvoltgae" condition is available on the digital output as "Alarm state".
Code Name [Code] & Function. Default MIN MAX Unit Variation IPA
P.360 OV prevention [0] Disable 0 0 1 465
[1] Enable
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