Current Limit Value Controller - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

18.4.2

Current limit value controller

Via a load-dependent speed control, the current limit value controller ensures that the drive system
is not overloaded. This is extended by the intelligent current limits described in the previous chapter.
The current limit value controller reduces the load on the drive, e.g. during acceleration, by stopping
the acceleration ramp. The switch-off of the frequency inverter which happens when the
acceleration ramps have been set at an excessive gradient is prevented in this way.
The current limit value controller is switched on and off via parameter
Operation Mode 610
0 - off
1 - On
Behavior in motor operation:
If the current set via parameter
controller will reduce the output frequency until the current limit is no longer exceeded. The output
frequency is reduced as a maximum to the frequency set by the parameter
the current value drops below the
setpoint again.
Behavior in generator operation:
If the current set via parameter
controller will increase the output frequency until the current limit is no longer exceeded. The output
frequency is increased, as a maximum, to the set
drops below the
Current Limit
again.
Parameter
No. Description
613 Current Limit
614 Frequency Limit
The control behavior of the current limit controller can be set via the proportional component,
parameter
Amplification
optimization of the controller parameters is necessary in exceptional cases, a setting should be made
by way of erratic changes of parameter
Parameter
No. Description
611 Amplification
612 Integral Time
The dynamism of the current limit value controller and the voltage controller is
influenced by the setting of the parameter
222
The current limit value controller functions and the intelligent current
limits have been deactivated.
The current limit value controller is active.
Current Limit
Current Limit
Current Limit
613, the output frequency is reduced to the required reference value
Min.
0.0 A
0.00 Hz
611, and the integrating component, parameter
Current Limit
Min.
0.01
1 ms
Operating Instructions ACU
Operation Mode
Function
613 is exceeded, the activated current limit value
613 the output frequency is increased to the
613 is exceeded, the activated current limit value
Maximum Frequency
Setting
Max.
oI
FIN
599.00 Hz
613.
Setting
Max.
30.00
10000 ms
Dyn. Voltage Pre-Control
610.
614. If
Frequency Limit
419. If the current value
Factory setting
oI
FIN
0.00 Hz
612. If an
Integral Time
Factory setting
1.00
24 ms
605.
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