BONFIGLIOLI active cube 201 User Manual

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Operating Instructions ACU
209
If the mains voltage is restored before a switch-off is effected by the mains undervoltage detection
system, the drive is accelerated to its reference frequency at the set acceleration or according to
parameter Acceleration on Mains Resumption 674. If the value of parameter Acceleration on Mains
Resumption 674 is set to the default value of 0.00 Hz/s, the drive is accelerated at the values set
for the ramp parameters Acceleration (Clockwise) 420 or Acceleration Anticlockwise 422 .
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
671
Mains failure threshold
-200.0 V
-50.0 V
-100.0 V
672
Reference mains support value
-200.0 V
-10.0 V
-40.0 V
The frequency inverter reacts to the signals at the control inputs both when the power
failure regulation is switched on and in normal operation. A control via externally
supplied control signals is only possible in the case of a no-break supply. As an
alternative, supply of the control signals through the frequency inverter is to be used.
Operation mode power failure regulation
The DC link voltage which is available in the case of a power failure is supplied by the motor. The
output frequency is continuously reduced and the motor with its rotating masses is switched over to
generator operation. The reduction of the output frequency is done at a current not exceeding the
maximum set with parameter Gen. Ref. Current Limit 683 or the ramp Mains Support Deceleration
673. Mains Support Deceleration 673 is active only if the actual frequency is lower than the
Shutdown Threshold 675.

BONFIGLIOLI active cube 201 Specifications

General

Brand	BONFIGLIOLI
Model	active cube 201
Category	DC Drives
Language	English