BONFIGLIOLI Agile Operating Instructions Manual page 234

Parameters
No. Description
721 Amplification 1 (|f|<P738)
722 Integral Time 1(|f|<P738)
723 Amplification 2 (|f|>P738)
724 Integral Time 2 (|f|>P738)
738 Speed Control Switch-Over Limit
748 Backlash Damping
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 os-cillation 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, decel-
eration). The frequency at which the switch-over of the controller parameters is effected can be set
via parameter
Speed Control Switch-Over Limit
7.9.5.3.1 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,
Power Limit Generator Operation
eters
P-Comp. Torque Upper Limit
728 Current Limit
729 Current Limit Generator Op.
The output value of the speed controller is limited by an upper and a lower current limit. From the set
values for
Current limit
considering the set magnetizing current. The parameter values are entered in 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
735.
Op.
Parameters
No. Description
728 Current Limit
729 Current Limit Generator Op.
I : Nominal value of frequency inverter
FIN
o : Overload capacity of frequency inverter
c
1)
If the minimum value is set, the value of
1
The default settings for amplification and integral time refer to the recommended machine data. This enables a
first function test in a large number of applications. Switch-over between settings 1 and 2 for the current fre-
quency range is done by the software ac-cording to the selected limit value.
Agile
Operating Instructions
Min.
0.00
0 ms
0.00
0 ms
0.00 Hz
0%
738.
730,
Torque Limit Torque Limit Generator Operation
740. The limits of the proportional portion are set via param-
732 and
P-Comp. Torque Lower Limit
728 and
Current limit generator operation
Isq Limit Source Motor Operation
Min.
0.0 A
-0.01 A
Current Limit
234
06/2013
Setting
Max. Fact. sett.
200.00
60000 ms
-
200.00
60000 ms
999.99 Hz 55.00 Hz
300% 100%
Current Limit
733.
729, the limits are calculated,
734 and
Isq Limit Source Generator
Setting
Max. Fact. sett.
o o
⋅I
c FIN c
1)
o -0.01 A
⋅I
c FIN
728 is used.
Parameter descriptions
1)
728,
Current
731 or
Power Limit
⋅I
FIN
Control functions