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Chapter 5 Trouble shooting and maintenance
3. Errors which can only be recovered manually but cannot be auto-recovered
Display
OC
OL1
OL2
OCL
LVC
Error
Over-current
during stop
Motor overload
Cause
1. Detection circuit
malfunctions
2. Bad connection for CT
signal cable
Send the inverter back for
repair
1. Increase motor capacity
1. Heavy load
2. Improper settings of F43
Inverter overload Heavy load
Over current
limit
Remedy
2. Set F43 correctly according
to motor nameplate.
Increase inverter capacity
1. Heavy Load
1. Increase motor capacity
2. Continuous over load
2.Increase ACC/ DEC time
F02~F03
3.set stall prevention function
C1~C6
1. Power voltage too low
Under voltage
2. Power voltage varies
during operation
widely
1.Improve power quality.
2.Set a longer acceleration time
3. Add a reactor at the power
input side
4. Increase inverter capacitor
Note： 〝@ 〞means when the inverter broken ,the failure contact does not action.
5-3