Technical information

7 – TROUBLESHOOTING
97
7.1.2 During starting, motor rotates but does not reach full speed
Condition Cause Solution
Fault Displayed. Fault Occurred. See fault code troubleshooting table
for more details.
Maximum Motor Current setting
(P7/QST07) set too low.
Review acceleration ramp settings.
Motor loading too high and/or current
not dropping below 175% FLA
indicating that the motor has not
come up to speed.
Reduce load on motor during
starting.
Motor FLA (P1/QST01) or CT ratio
(P68/FUN03) parameter set
incorrectly.
Verify that Motor FLA and CT ratio
parameters are set correctly.
Abnormally low line voltage. Fix cause of low line voltage.
Display shows Accel or Run.
A mechanical or supplemental brake
is still engaged.
Verify that any external brakes are
disengaged.
Motor Hums before turning
Initial current to low Increase initial current
FLA or CT incorrect Verify FLA or CTs
7.1.3 Acceleration not operating as desired
Condition Cause Solution
Ramp time (P8/QST08) too short. Increase ramp time.
Initial current (P6/QST06) set too
high.
Decrease Initial current.
Maximum current (P7/QST07) set
too high.
Decrease Maximum current.
Kick start current (P13/CFN10) too
high.
Decrease or turn off Kick current.
Kick start time (P14/CFN11) too
long.
Decrease Kick time.
Motor FLA (P1/QST01) or CT ratio
(P68/FUN03) parameter set
incorrectly.
Verify that Motor FLA and CT ratio
parameters are set correctly.
Motor accelerates too quickly.
Starter Type parameter (P64/FUN07)
set incorrectly.
Verify that Starter Type parameter is
set correctly.
Maximum Motor Current setting
(P7/QST07) set too low.
Review acceleration ramp settings.
Motor loading too high. Reduce load on motor during
starting.
Motor FLA (P1/QST01) or CT ratio
(P68/FUN03) parameter set
incorrectly.
Verify that Motor FLA and CT ratio
parameters are set correctly.
Abnormally low line voltage. Fix cause of low line voltage.
Motor accelerates too slowly
Ramp time to long Decrease ramp time