BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual page 210

The time required until the motor has come to a standstill results from the regenerative energy of
the system which results in an increase in the DC link voltage. The DC link voltage set with the
parameter
Reference Shutdown Value
kept constant. The voltage rise enables optimization of the braking behavior and the time until the
drive has come to a standstill. The behavior of the controller can be compared to stopping behavior
2 (Shutdown and Stop), as the voltage controller brings the drive to a standstill at the maximum
deceleration ramp and supplies it with the remaining DC link voltage.
If the DC-Link Voltage is restored before the drive has stopped, but after dropping below the
675, the drive will be decelerated until it stops.
Shutdown Threshold
If the mains voltage is restored after the shutdown of the drive but before the undervoltage switch-
off has been reached, the frequency inverter signals a fault. The control unit displays the error signal
"F0702".
If the mains failure without shutdown (
frequency has been reduced to 0 Hz, the drive is accelerated to the reference frequency when the
mains supply is restored.
If the mains failure with or without shutdown takes so long that the frequency inverter shuts off
completely (LED's = OFF), the frequency inverter will be in the "Standby" state when the mains
supply is restored. If the inverter is released again, the drive will start. If the drive is to start
automatically after restoration of the mains supply if the inverter is released permanently,
651 of Auto Start must be switched on.
Mode
Parameter
No. Description
675 Shutdown threshold
676 Reference shutdown value
The
Shutdown Threshold
Threshold
210
676 is used by the voltage controller as a control figure and
Shutdown Threshold
ACU
all 0.00 Hz
201 225.0 V
401 425.0 V
501 550.0 V
601 725.0 V
676 becomes effective below the frequency value
675.
Operating Instructions ACU
675 = 0 Hz) takes so long that the
Setting
Min. Max.
599.00 Hz
387.5 V
775.0 V
875.0 V
1175.0 V
Operation
Factory setting
0.00 Hz
365.0 V
730.0 V
830.0 V
1130.0 V
Shutdown
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