Trouble Shooting For When Position Control Is Not Exercised Normally - Mitsubishi Electric FR-A700 Instruction Manual

Position control by vector control
4.6.7

Trouble shooting for when position control is not exercised normally

the speed control items?
Please contact your sales
representative.
REMARKS
The speed command of position control relates to speed control. (Refer to page 97 )
140
Position control is not
exercised normally
Have you checked
N
Check the speed
Y
control measures.
Y
Position shift occurs.
Have you made
N
the electronic gear
The forward (reverse)
rotation stroke end signal has
turned off before completion
Y
Motor or machine is
hunting.
N
The position loop gain
(Pr. 422) is high.
Decrease
the position loop gain
(Pr. 422).
Y
Machine operation is
unstable.
Insufficient torque.
Increase the excitation
N
ratio (Pr. 854).
N
setting?
Set the electronic gear.
Y
(Pr. 420, Pr. 421)
Y
of positioning.
Do not turn off the forward
(reverse) rotation stroke end
N
signal before completion of
positioning.
N
Y
Perform easy gain tuning.
The speed control gain is high.
Decrease the speed control
proportional gain (Pr. 820).
Increase the speed control
integral time (Pr. 821).
Vector Vector Vector