BONFIGLIOLI Vectron ACTIVE CUBE - Page 56

The position controller evaluates the positioning operation (target/actual position) and
tries to control the drive such that it comes as close as possible to the specifications.
For this purpose, an
additional frequency is calculated for compensation of position
deviations. By setting the corresponding parameter, this frequency can be limited. The
parameter settings of the position controller determine how quick and to what extent
position deviations are to be compensated.
Via Time Constant 1104
, you can define the maximum time in which the position
deviation is to be compensated.
Via parameter Limitation 1118
, you can define to which value the speed is limited for
compensation of the position deviation.
Parameters
Settings
No.
Description
Min.
Max.
Factory setting
1104 Time constant 0.00 ms 300.00 ms
10.00 ms
1)
100.00 ms
2)
1118
Limit
0 u/s
2
31
-1 u/s
327 680 u/s
1)
Factory parameter setting Configuration 30 = 240 or 540
2)
Factory parameter setting Configuration 30 = 440
Example:
Position deviates by 1 motor shaft revolution, time constant is set to 1 ms. The posi-
tion controller will increase the motor frequency by 1000 Hz in order to compensate
the position deviation. Parameter
Limitation
1118 must be set sufficiently.
Controller block diagram
In order to avoid oscillations of the drive while it is at standstill, amplification is re-
duced to 50 % of the parameterized value for small position deviations.
Amplification [%]
Control deviation
of position [°]
0.25-0.25 0.00
50
100
0.50
-0.50
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