Mitsubishi A1SD75M1, User Manual

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MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
12.3 Functions for compensating the control
The auxiliary functions for compensating the control include the "backlash
compensation function", "electronic gear function", and "near pass mode function".
Each function is executed by parameter setting or sequence program creation and
writing.
12.3.1 Backlash compensation function
The "backlash compensation function" compensates the backlash amount in the
mechanical system. When the backlash compensation amount is set, an extra amount
of position/speed commands equivalent to the set backlash amount is output every
time the movement direction changes.
The details shown below explain about the "backlash compensation function".
(1) Control details
(2) Precautions during control
(3) Setting the backlash compensation function
(1) Control details
The following drawing shows the operation of the backlash compensation
function.
Pr.12 Backlash compensation amount
Worm gear
Workpiece
Fig. 12.9 Backlash compensation amount