Instructions / Assembly

A2
Inverter (0.75-30kW)
Chapter 9 Error Message and Fault Diagnosis
9.1 Fault table
Display Meaning
Cause
Diagnosis
Check voltage of power
source
Check voltage of power
source
OU –o
OU –u
OU –d
Overvoltage Overvoltage of
power source
Acceleration Overvoltage of
overvoltage
Deceleration Overvoltage of
power source
Overvoltage of power
overvoltage
Steady state
Overvoltage power source
Stop state
power source or source, increase
large inertia
deceleration time, add
brake components
OU –r
LU –o
LU–u
Overvoltage of Check voltage of power
source
Undervoltage of Check voltage of power
undervoltage power source source
Acceleration Undervoltage of Check voltage of power
undervoltage power source,
small
source, increase
acceleration time
acceleration time
LU –d
LU –r
Deceleration Undervoltage of Check voltage of power
undervoltage power source source
Steady state Undervoltage of Check voltage of power
undervoltage power source or source, decrease load
large inertia
OC –o
Stop state
Component fail, Push “RESET”.
overcurrency interference
Component fail if it
happens again.
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