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12
CONTROL AUXILIARY FUNCTIONS
12.3 Functions for compensating the control
12.3.1 Backlash compensation function
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.
The "backlash compensation function" compensates the backlash amount in the
mechanical system. When the backlash compensation amount is set, an extra amount
of pulses 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.
Fig. 12.8 Backlash compensation amount
Worm gear
Workpiece
Pr.12 Backlash compensation amount
12 - 11
MELSEC-A
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