7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 30
(d) Adjusting the lost motion compensation
When protrusions still occur, the compensation is insufficient. Increase the lost motion compensation
by approximately 0.5% until the protrusions are eliminated. When notches occur, the compensation
is excessive. Decrease the lost motion compensation by approximately 0.5% until the notches are
eliminated. Different values can be set as the compensation for each of when the forward rotation
(CCW) switches to the reverse rotation (CW) and when the reverse rotation (CW) switches to the
forward rotation (CCW).
The locus before compensation
The locus after compensation
Compensation
Travel
direction
(e) Adjusting the lost motion compensation timing
When the machine has low rigidity, the speed loop gain is set lower than the standard setting value,
or the servo motor is rotating at high speed, quadrant projections may occur behind the quadrant
change points. In this case, you can suppress the quadrant projections by delaying the lost motion
compensation timing with [Pr. PE49 Lost motion compensation timing]. Increase the setting value of
[Pr. PE49] from 0 ms (initial value) by approximately 0.5 ms to adjust the compensation timing.
Before timing delay compensation
After timing delay compensation
Compensation
Travel
direction
(f) Adjusting the lost motion compensation non-sensitive band
When the lost motion is compensated twice around a quadrant change point, set [Pr. PE50 Lost
motion compensation non-sensitive band]. Increase the setting value so that the lost motion is not
compensated twice. Setting [Pr. PE50] may change the compensation timing. Adjust the lost motion
compensation timing of (2) (e) in this section.
Before timing delay compensation
After timing delay compensation
Compensation
Travel
direction
Содержание MR-JE-_A
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Страница 29: ...1 FUNCTIONS AND CONFIGURATION 1 14 MEMO ...
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Страница 259: ...8 TROUBLESHOOTING 8 8 MEMO ...
Страница 264: ...9 DIMENSIONS 9 5 2 SCR connector system 3M Receptacle 36210 0100PL Shell kit 36310 3200 008 Unit mm 34 8 39 5 22 4 11 0 ...
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Страница 339: ...12 COMMUNICATION FUNCTION MITSUBISHI ELECTRIC GENERAL PURPOSE AC SERVO PROTOCOL 12 34 MEMO ...