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6.4.2 Linear axis error compensation
July 2013
The reversal error is compensated dynamically depending on the acceleration.
The reversal error is compensated more rapidly at high acceleration, and more
slowly at low acceleration. MP708 is used to define the distance within which
the complete reversal error is to be compensated. This dynamic compensation
is active only if no time constant is defined in MP752. The bandwidth of the
compensation value can be limited in MP2690.
Note
Linear axis error compensation is not available for rotary axes!
For every linear axis you can compensate a linear axis error.
Positive linear axis error: The table moves too far.
Negative linear axis error: The table moves short.
Error
[mm]
0.02
0.01
0
Ref. mark
-0.01
-0.02
Compensation:
In MP720, enter the axis error in [mm/m].
With MP730, activate the linear axis error compensation.
MP720.x
Linear axis error compensation
Input:
–1.000 to +1.000 [mm/m]
MP730
Selection of linear/nonlinear axis error compensation
Format:
%xxxxxxxxxxxxxxxxx
Input:
0 to 17 represent axes 1 to 18
0: Linear axis error compensation
1: Nonlinear axis error compensation
6.4 Axis-error compensation
500
1000
Encoder
[mm]
651
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