Troubleshooting
344
8.5 Troubleshooting after a test run
Fault
Remedy
(1) The motor does
not rotate and
the LED flashes
red.
If the LED flashes red:
•
Go to DIS-05, check for trip errors, and if a trip has occurred
reset the inverter.
•
Check for BX terminal input signals received at DIS_03. If an
input signal is ON, change it to OFF and try starting the motor.
Confirm that the command source is set correctly.
•
If the inverter does not operate via terminal input, try to operate it
using the keypad.
•
If the inverter does not operate using keypad input, try to operate
it via terminal input.
•
If these steps do not resolve the problem, refer to Item 6 in this
table.
(2) The motor
does not rotate
and the [REV]
and [FWD]
keys are
illuminated
green.
If the [REV] and [FWD] keys are illuminated green:
•
Confirm the inverter output connections (U, V, W) are in the
correct phase rotation (see wiring diagram).
•
Confirm that a braking device is not preventing motor operation.
•
Check the brake settings and the brake relay settings.
•
Confirm the pre-ramp reference (DIS_01) is not set to “0.” Refer
to Item 7 in this table for more information about setting the
speed reference.
•
Confirm the motor capacity (PAR_09) is set correctly.
•
Confirm the motor base speed (PAR_14) is set correctly.
•
Confirm the motor rated current (PAR_19) is set correctly.
•
Confirm the motor flux current (PAR_52) is set correctly (30-40%
of the value at PAR_19).
•
Confirm the motor rated slip (PAR_18) is set correctly.