Function To Compensate Control; Backlash Compensation Function - Mitsubishi Electric MELSEC iQ-R-RD75P4 User Manual

7.3

Function to Compensate Control

The functions to compensate the control include Backlash compensation function, Electronic gear function, Near pass
function, and Output timing selection of near pass control. Each function is executed by setting parameters or creating and
writing a program.

Backlash compensation function

This function compensates the backlash amount in the machine system.
When the backlash compensation amount is set, pulses for an extra amount equivalent to the set backlash amount are output
every time the movement direction changes.
Pr.11 Backlash compensation amount
Control details
The following figure shows the operation of the backlash compensation function.
Forward run pulse
Backlash pulses are output for
1.77ms when the movement
direction is reversed.
Reverse run pulse
7 CONTROL SUB FUNCTIONS
218
7.3 Function to Compensate Control
Worm gear
Workpiece
Reverse timing
1.77ms
t