Mitsubishi Electronics QD75D ユーザーズマニュアル

12 - 11

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", and "near pass 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 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.

Pr.11 Backlash compensation amount

Worm gear

Workpiece

Fig. 12.8 Backlash compensation amount