HEIDENHAIN iTNC 530 Service Manual page 353

Comparison of
noml. and actl.
speed in the
integrated
oscilloscope
July 2010
Adjust tachometer generator at the servo amplifier using the servo lag display as follows:
Operation with ...
Velocity with feedforward control Ideally 0
Following error
Note
Read the traverse speed from the display.
The kv factor for the lag mode is defined in MP 1810.x.
It is possible that a multiplication factor for the kv factor is active for the displayed traverse
speed (MP 1820.x). A characteristic curve kink point is entered in MP 1830.x. Contact the
machine manufacturer!
Repeat the adjustment for all axes.
Reset machine parameter MP 7290.x to its original value.
Note
It might be helpful to use the integrated oscilloscope. The signals V (nom rpm) and V (act
rpm) can be recorded and compared. The quality of the speed adjustment can thus be
controlled and improved, if required.
Servo-lag displayed
According to the following formula:
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