Limitation Of Speed Controller - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

Parameter
No. Description
721 Amplification 1
722 Integral Time 1
723 Amplification 2
724 Integral Time 2
754 Filter time constant
738 Speed Control Switch-Over Limit
748 Backlash damping
1)
The default setting is relative to the recommended machine data for the amplification and
integral time. This enables a first function test in a large number of applications. Switch-over
between settings 1 and 2 for the current frequency range is done by the software according to
the selected limit value.
The optimization of the speed controller can be done with the help of a reference value leap. The
amount of the leap is defined by the set ramp or limitation. The optimization of the PI controller
should be done at the maximum admissible reference figure change rate. First, the amplification is
increased until the actual value overshoots distinctly during the control process. This is indicated by
a strong oscillation of the speed and by the running noises. In the next step, reduce the
amplification slightly (1/2 ...3/4 etc.). Then reduce the integral time (larger I component) until the
actual value overshoots only slightly in the control process.
If necessary, check the speed control settings in the case of dynamic operations (acceleration,
deceleration). The frequency at which a change-over of the controller parameters takes place can be
set via the parameter
Speed Control Switch-Over Limit

18.5.4.1 Limitation of speed controller

The output signal of the speed controller is the torque-forming current component Isq. The output
and the I portion of the speed controller can be limited via parameters
729,
Limit Generator Op.
739,
Limit Power Limit Generator Operation
parameters P-Comp. Torque Upper Limit
 The output value of the controller is limited by an upper and a lower current limit, parameters
728 and
Current Limit
Amperes. The current limits of the controller can be linked to the fixed limits and analog input
parameters. The assignment is done via the parameters
and
Isq Limit Source Generator Op.
 The output value of the controller is limited by an upper and a lower torque limit, parameter
730 and parameter
Torque Limit
input as a percentage of the rated motor torque. The assignment of fixed values or analog limit
values is done via the parameters
737.
Gen. Op.
 The output value of the P component is limited with parameter
732 and
P-Comp. Torque Lower Limit
percentage of the rated motor torque.
 The power output by the motor is proportional to the product of speed and torque. This output
power can be limited at the controller output with a
Generator Operation
228
Min.
0.00
0 ms
0.00
0 ms
0 ms
0.00 Hz
0 %
730,
Torque Limit Torque Limit Generator Operation
740. The limits of the proportional portion are set via
732
and P-Comp. Torque Lower Limit
Current Limit Generator Op.
735.
Torque Limit Generator Operation
Torque Limit Source Motor Op.
733. The limit values are input as torque limits as a
740. The power limits are entered in kilowatt.
Operating Instructions ACU
Setting
Max. Factory setting
200.00
60000 ms
200.00
60000 ms
128 ms
599.00 Hz
300 %
738
.
Current Limit
729. The limit figures are entered in
Isq Limit Source Motor Operation
731. The limit values are
736 and
P-Comp. Torque Upper Limit
739 and
Power Limit
1)
-
1)
-
1)
-
1)
-
0 ms
55.00 Hz
100 %
728,
Current
731
and Power
733.
734
Torque Limit Source
Power Limit
12/16