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Chapter 5 Trouble shooting and maintenance
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Check parameters of the inverter
Perform parameter initializations
Specify operation control method
Set up frequency commands
Is the frequency
value displayed in
the operating unit
NO
Replace the control board
YES
Are there voltage
outputs in output
terminals T1,T2
and T3.
NO
Replace the control
board
NO
YES
Connect the motor to run
Is there any
abnormal
display?
YES
Is the control
board working
well after
replacement?
YES
NO
Are output
currents of
each phase
even?
•
NO
YES
The inverter is OK
The inverter faults
Perform detailed checks
5-8