BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual page 207

Operation mode overvoltage control,
Voltage controller: Parameter
Ud, f
680
Ud
f
The overvoltage controller prevents a switch-off of the frequency inverter in generator operation.
The reduction of the drive speed by a ramp gradient selected via the parameter
421 and
(Clockwise) Deceleration Anticlockwise
the voltage exceeds the figure set by the parameter
deceleration is reduced in such a way that the DC link voltage is regulated to the set value. If the DC
link voltage cannot be regulated to the set reference value by the reduction of the deceleration, the
deceleration is stopped and the output frequency raised. The output frequency is calculated by
addition of the parameter value
the controller intervention.
Parameter
No. Description
Reference DC
680
limitation
681 max. frequency rise
For reliable operation of the overvoltage control, Bonfiglioli Vectron MDS GmbH recommends setting
the motor chopper
Trigger Threshold
Chapter 19.7.1 "19.7.1".
12/16
670 = 1
Operation Mode
Overvoltage controller active
421 or 423
Max. Frequency Rise
ACU Min.
201 225.0 V
401 425.0 V
link
501 550.0 V
601 725.0 V
all 0.00 Hz
507 < (
Reference DC-Link Limitation
Operating Instructions ACU
681
423 can lead to an overvoltage in the DC link. If
Reference DC-Link Limitation
681 to the frequency at the operating point of
Setting
Max.
387.5 V
775.0 V
875.0 V
1175.0 V
599.00 Hz
t
Deceleration
680, the
Factory setting
380.0 V
760.0 V
860.0 V
1160.0 V
10.00 Hz
680 – 10 V) . Refer to
207