Filter
Top Products
86
IPM motor control <IPM>
5
Acceleration/deceleration
time is different from the
setting.
(1) Torque shortage
(2) Load inertia is too high.
(1) Raise the stall prevention operation level. (Refer to
page 91.)
(2) Set acceleration/deceleration time suitable for the
load.
6
Machine movement is
unstable.
(1) Speed control gain is not
suitable for the machine.
(2) Response is slow because of
the inverter's acceleration/
deceleration time setting.
(1) Adjust Pr.820 and Pr.821 (Refer to page 84.)
(2) Set the optimum acceleration/deceleration time.
7
Rotation ripple occurs
during the low-speed
operation.
(1) High carrier frequency is
affecting the motor rotation.
(2) Speed control gain is too low.
(1) Lower Pr.72 PWM frequency selection.
(2) Raise Pr.820 Speed control P gain 1.
Condition Possible cause Countermeasure