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CV3100 series and MINI series high performance general purpose inverter instruction manual
7-2
7.4 Fault code and countermeasure
7-1 Table of fault code and solution
Fault
code
Fault name
Possible cause
Solution
Er00
Over current at
accelerating
operation
①
Too short accelerating time
②
Ultra large load inertia.
③
Unsuitable V/F curve
④
Ultra low main voltage
⑤
Too small inverter power
⑥
Restart the rotating motor
①
Extend accelerating time
②
Reduce the load inertia
③
Reduce torque boost value
or adjust V/F curve
④
Examine input power
supply
⑤
Choose the inverter of large
power
⑥
Set the speed-detection start
function
Er01
Over current at
decelerating
operation
①
Too short decelerating time
②
Ultra large load inertia.
③
Too small inverter power
①
Extend decelerating time
②
Reduce the load inertia
③
Choose the inverter of large
power
Er02
Over current at
constant speed
operation
①
Abnormal input voltage
②
Load occurs abrupt change or
abnormity
③
Too small inverter power
①
Examine input power
②
Examine load or reduce the
abrupt change of load
③
Choose the inverter of large
power
Er03
Over voltage at
accelerating
operation
①
Abnormal input voltage
②
Restart the rotating motor
①
Examine input power
②
Set the speed-detection start
function
Er04
Over voltage at
decelerating
operation
①
Too short decelerating time
②
There is energy feedback load
③
Abnormal input power supply
①
Extend decelerating time
②
Add braking power of
external energy
consumption braking unit
③
Examine input power
Er05
Over voltage at
constant speed
operation
①
Abnormal input voltage
②
Ultra large load inertia.
①
Examine input power
②
Choose energy
consumption braking unit
Er06
Over voltage at
stopping
①
Abnormal input supply voltage
①
Examine input supply
voltage
Er07
Under voltage
at operating
①
Abnormal input voltage
①
Examine supply voltage
Er08
Phase failure
of input power
①
Input power occurs phase failure
or abnormity
①
Examine input power
supply