Integral Time Speed Synchronization; Acceleration Pre-Control - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

17.5.4.3 Integral time speed synchronization

For speed synchronization and in order to increase the speed accuracy, the integrat-
ing portion of the speed control can be set via parameter
chronization
tion DG 1" and „5 – speed synchronization DG 2" for parameter
766.
source
No.
515 Integral time speed synch.

17.5.5 Acceleration Pre-Control

The acceleration pre-control is active in the speed-controlled configurations and can
be activated via parameter
Operation mode
0 - Off
1 - On
The acceleration pre-control controlled parallel to the speed controller reduces the
reaction time of the drive system to a change of reference values. The minimum ac-
celeration time defines the modification speed of the reference speed value as from
which a torque necessary for acceleration of the drive is pre-controlled. The accelera-
tion of the mass is a function of the
value calculated from the increase of the reference value and the multiplication factor
of the torque required is added to the output signal of the speed controller.
No.
726 Minimum acceleration
727 Mech. time constant
For optimal setting, the acceleration pre-control is switched on and the mechanical
time constant is set to the minimum value. The output value of the speed controller
is compared to the minimum acceleration time during the acceleration processes. The
frequency ramp is to be set to the highest value occurring in operation at which the
output figure of the speed controller is not yet limited. Now, the value of the
mum acceleration
that the acceleration pre-control is active. The acceleration pre-control is not raised
by increasing the
time modification of the drive during the acceleration processes.
236
515. The setup is effective in operation modes „4 – speed synchroniza-
Parameter
Description
Operation mode
725
The control system is not influenced.
The acceleration pre-control is active according to
the limit values.
Parameter
Description
726 is set to half the set acceleration ramp so that it is ensured
Mech.time constant
Operating Instructions ACU
Integral time speed syn-
Settings
Min. Max.
1 ms 60000 ms
725.
Function
727 of the system. The
Mech. time constant
Settings
Min. Max.
0.1 Hz/s 6500.0 Hz/s
1 ms 60000 ms
727 until the output figure corresponds to the
Actual speed
Fact. sett.
5000 ms
Fact. sett.
1.0 Hz/s
10 ms
Mini-
06/13