BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual page 143

ment.
In operation modes 10 to 15, it cannot be ruled out that a wrong direction of rotation
is determined in quick synchronization. For example, a frequency not equal to zero
may be determined although the drive is at a standstill. If there is no overcurrent, the
drive is accelerated accordingly. The direction of rotation is defined in operation
modes 11, 14 and 15.
The synchronization changes the parameterized starting behavior of the selected
configuration. First, the start command activates the search run in order to determine
the rotary frequency of the drive. In operation modes 1 to 5, the
motor current
371.
rent
No.
647 Current / Rated Motor Current
The sensor-less control is extended for the search run by a PI-Controller, which regu-
lates the parameterized
integrating part of the current controller can be set via the parameters
648 and
tion
the parameters to 0.
No.
648 Amplification
649 Integral time
If the
Operation mode Synchronization
to 5 (search run), the search run is not started before the
has elapsed.
If synchronization to the drive mechanism is not possible, the
impressed into the motor in operation modes 1 to 5 for the duration of the
time after search run
the direct current brake (DCB) leads to a heating of the motor and should only be
done for a short period in internally ventilated motors.
No.
646 Brak. time after search run
NOTE
The Flying Start (or Search) function is designed for the operation of motors without
brake. Brake motors may not be operated optimum in individual cases (depending of
parameterization and brake control) with the Flying start function.
Operating Instructions ACU
06/13
647 is used for synchronization as a percentage of the
Parameter
Description
Current / Rated Motor Current
649. The control functions can be deactivated by setting
Integral Time
Parameter
Description
646. The impress of the direct current set in the parameters of
Parameter
Description
Settings
Min. Max.
1.00 % 100.00 %
647. The proportional and
Settings
Min. Max.
0.00 10.00
0 ms 1000 ms
645 parameter was set to operation mode 1
Demagnetization time
Braking current
Settings
Min. Max.
0.0 s 200.0 s
Current / Rated
Rated cur-
Fact. sett.
70.00 %
Amplifica-
Fact. sett.
1.00
20 ms
633
631 is
Braking
Fact. sett.
10.0 s
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