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64
Position control (Pr. 419 to Pr. 430,
Pr. 464 to Pr. 494)
2.7.12 Position control is not exercised normally
(1) Position control
REMARKS
The speed command of position control relates to speed control. Refer to the Instruction Manual (basic) for details.
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Y
Position control is not
exercised normally.
Have you checked the
speed control items?
Is the motor or
machine hunting?
Is machine operation
unstable?
Check the speed
control techniques.
Have you made the
electronic gear setting?
Has the forward (reverse)
rotation stroke end signal
turned off before
completion of positioning?
Is the position loop gain
(Pr. 422) high?
Decrease the position
loop gain (Pr. 422).
Torque is insufficient.
Increase the excitation
ratio (Pr. 854).
Set the electronic gear
(Pr. 420, Pr. 421).
Do not turn off the forward
(reverse) rotation stroke end
signal before completion of
positioning.
The speed control gain is high.
Decrease the speed control
P gain (Pr. 820).
Increase the speed control
integral time (Pr. 821).
Please contact your sales
representative.
Perform easy gain tuning.
Does a position
shift occur?