Limitation Of Speed Controller - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

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 op-
timization of the PI controller should be done at the maximum admissible reference
figure change rate. First, the amplification is increased until the actual value over-
shoots 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 (ac-
celeration, deceleration). The frequency at which a switch-over of the controller pa-
rameters is affected can be set via parameter

17.5.4.1 Limitation of Speed Controller

The output signal of the speed controller is the torque-forming current component
Isq. The output and the I component of the speed controller can be limited via pa-
rameters
730,
Torque limit generator operation
tor operation
component torque upper limit
733.
The output value of the controller is limited by an upper and a lower current lim-
−
it, parameter
tion
troller can be linked to the fixed limits and analog input parameters. The assign-
ment is done via the parameters
limit source generator operation
− The output value of the controller is limited by an upper and a lower torque limit,
parameter
tion.
The assignment of fixed values or analog limit values is done via the parameters
Torque limit source, motor op.
The output value of the P component is limited with parameter
−
upper limit
as torque limits as a 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
739 and
it
in kW.
234
728,
Current limit Current limit generator operation
740. The limits of the proportional component are set via parameter
732 and parameter
728 and parameter
Current limit
729
The limit figures are entered in Amperes. The current limits of the con-
.
730 and parameter
Torque limit
731. The limit values are input as a percentage of the rated motor torque.
732 and
P comp. torque lower limit
Power limit generator operation.
Operating Instructions ACU
Speed control switch-over limit
731 or
Power limit
P component torque lower limit
Current limit generator opera-
Isq limit source motor operation
735.
Torque limit generator opera-
736 and
Torque limit source, generator op.
733. The limit values are input
740. The power limits are entered
738.
729,
Torque limit
739,
Power limit genera-
P
734 and
Isq
737.
P comp. torque
Power lim-
06/13