Starting Current; Frequency Limit; Brake Release Time - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

12.1.1.1 Starting Current

The
Starting current
torque until the
Applications in which high current is permanently needed at a low speed are to be
realized using forced-ventilated motors to prevent thermal overload.
No.
623 Starting Current
I = Nominal Output current of Frequency inverter
FIN
o: Overload capability of Frequency inverter
In the following settings, the starting current impression is used for the starting be-
havior:
−
Configuration
Operation mode
−
Configuration
−
Configuration
chronous motor

12.1.1.2 Frequency Limit

The
Starting current
in the selected configuration until the
operating points below the frequency limit are only admissible if forced-ventilated
motors are used.
The transition to the control method of the selected
above the frequency limit.
The
Frequency limit
sioning in field oriented control configurations 4xx and 6xx. In V/f control configura-
tions 1xx the parameter
commissioning.
No.
624 Frequency Limit

12.1.1.3 Brake release time

In order to protect the motor holding brake against damage, the motor may only
start after the brake has been released. Startup to reference speed is affected only
after the
at least as long as the time required for releasing the holding brake. By using nega-
tive values for the parameter, release of the brake is delayed. This can be done in
order to prevent loads from falling down, for example.
No.
625 Brake release time
136
623 ensures, particularly for high-torque start, a sufficient
624 is reached.
Frequency limit
Parameter
Description
30 = 1xx (V/f control of asynchronous motor),
620 =2, 4, 12 or 14
30= 4xx (FOC of an asynchronous motor)
30= 610 (PMSM: sensor-less field-orientated control -DMC), syn-
623 is impressed in configurations 1xx, 4xx and 6xx for control
624 is set up automatically during the guided motor commis-
Frequency limit
Parameter
Description
625 has elapsed. The time should be set such that it is
Brake release time
Parameter
Description
Operating Instructions ACU
Settings
Min. Max.
0.0 A o ⋅ I
FIN
624 is reached. Permanent
Frequency limit
configuration
624 is not changed by the guided motor
Settings
Min. Max.
0.00 Hz 100.00 Hz
Settings
Min. Max.
-5000 ms 5000 ms
Fact. sett.
I
FIN
30 takes place
Fact. sett.
2.60 Hz
Fact. sett.
0 ms
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