SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual, Page: 194 / 260

192 Operating Instructions ACU 09/08
If the mains voltage is restored after the shutdown of the drive but before the under-
voltage switch-off has been reached, the frequency inverter signals a fault. The con-
trol unit displays the fault message "F0702".
If the mains failure without shutdown (
Shutdown threshold
675 = 0 Hz) takes so
long that the 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 inver-
ter shuts off completely (LED's = OFF), the frequency inverter will be in the "Stand-
by" 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,
Operation mode
651 of Auto Start
must be switched on.
Parameter Settings
No. Description ACU Min. Max. Fact. sett.
675 Shutdown Threshold 0.00 Hz 999.99 Hz 0.00 Hz
676 Reference Shutdown Value
201 225 387.5 365
401 425 770 730
The voltage controller uses the limit values of the DC link voltage. The frequency
change necessary for this is parameterized by the generator reference current value
or the ramp. The
Gen. ref. current limit
683
or the ramp
Mains support deceleration
673 defines the maximum deceleration of the drive necessary in order to reach the
voltage value
Reference mains support value
672. The
Acceleration on mains re-
sumption
674 replaces the set values of the ramp parameters
Acceleration (clock-
wise)
420 or
Acceleration anticlockwise
422
if the figure set in the factory is
changed. The voltage control in a mains failure changes from the frequency limit
Shutdown threshold
675 from
Reference mains support value
672 to the
Reference
shutdown value
676.
Parameter Settings
No. Description Min. Max. Fact. sett.
683 Gen. ref. current limit 0.0 A ü
⋅
I
FUN
I
FUN
673 Mains support deceleration 0.01 Hz/s 9999.99 Hz/s 50.00 Hz/s
674 Acceleration on mains resumption 0.00 Hz/s 9999.99 Hz/s 0.00 Hz/s
The proportional and integrating part of the current controller can be set via parame-
ters
Amplification
677 and
Integral time
678 . The control functions are deactivated
by setting the parameters to 0. The controllers are P and I controllers in the corres-
ponding settings.
Parameter Settings
No. Description Min. Max. Fact. sett.
677 Amplification 0.00 30.00
1
1)
2 2)
678 Integral time 0 ms 10000 ms
8 ms
1)
23 ms
2)
The factory settings depend on the selected configuration and control procedure.
According to the setup of parameter
Configuration
30
there is the following assign-
ment.
1)
Configurations 1xx
2)
Configurations 4xx, 2xx, 5xx
Operating Instructions ACU 09/08 192