User Manual of A90 Series Inverter
260
1
2
3
4
5
6
7
8
9
0
9.2 Failure Analysis
If the motor does not work as expected due to errors in function setting and external
control terminal connection after the inverter is powered on, refer to the analysis in this
section for the corresponding solutions. If a fault code is displayed, see the solutions in 0.
9.2.1 Failure in parameter setting of function codes
The displayed parameters remain unchanged during the forward or reverse spinning of
the digital potentiometer.
When the inverter is in the running status, some code parameters cannot be modified
without stopping the inverter.
The displayed parameters can be modified but cannot be stored during the forward or
reverse spinning of the digital potentiometer.
Some function codes are locked and cannot be modified.
When F12.02 is set to 1 or 2, parameter changes are restricted. Please set F12.02 to 0.
Or, this occurs after the user password is set.
9.2.2 Abnormality of motor rotation
When the RUN key
RUN
on the keyboard is pressed, the motor does not rotate.
Terminal control of the start and stop: Check the setting of the function code
F00.02.
The free stop terminal FRS and COM are closed: Disconnect the free stop
terminal FRS from COM.
Switching of the running command to terminal is valid. In this case, the running
command is only subject to terminal control. This will be invalid if modified.
The status combination of the running command channel is terminal control:
Change it to keyboard control.
The reference input frequency is set to 0: Increase the reference input frequency.
The input power supply is abnormal or the control circuit fails.
The control terminals RUN and F/R are ON, and the motor does not rotate.
Enabling of the stop function by the external terminal is invalid: Check the
setting of function code F00.02.
