Mitsubishi QD75P1N - Functions for Compensating the Control; Backlash Compensation Function

12 - 12
MELSEC-Q
12 CONTROL SUB FUNCTIONS
12.3 Functions for compensating the control
The sub functions for compensating the control include the "backlash compensation
function", "electronic gear function", "near pass function", and "output timing selection
of near pass control". 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 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] Control Precautions
[3] Setting method
[1] Control details
The following drawing shows the operation of the backlash compensation
function.
Pr.11 Backlash compensation amount
Worm gear
Workpiece
Fig. 12.8 Backlash compensation amount