Xinje VB3 - Fault Diagnosis and solution; Fault Diagnosis and Solution Table

V5 series inverter
86
5 Fault Diagnosis and solution
5-1. Fault diagnosis and solution
When fault occurs, the error code will show in LED display, the inverter stops outputting and the fault relay contactor is acti-
vated. If the motor is running when the fault occurs, motor will free stop. Table 5-1 is the fault inverter may happen. Please
check the fault according to the table or contact us for service.
Table 5-1 Fault and solution
Fault Code
Fault Type Possible reason Solution
E-01
Over-current
when
accelerating
Too heavy the load and too short the Acc time Increase the accerlation time
V/F curve is not suitable Adjust V/F curve setting
Restart the motor when it is running Set to restart after speed detection
torque boost value is too large
Adjust the value of manual torque boost or change to auto
torque boost
Inverter power is too low Select higher power inverter
E-02
Over-current when
decelerating
Too short Dec time Increase the Dec time
Potential or big inertia load Increase the brake power of external brake unit
Inverter power is too low Select higher power inverter
E-03
Over-current when
constant speed run-
ning
Sudden change of load Check and reduce the change of load
Too short Acc/Dec time Increase the Acc/Dec time
Abnormal load Check the load
AC supply voltage is low Check AC supply voltage
Inverter power is too low Select higher power inverter
E-04
Over-voltage when
accelerating
Abnormal input voltage Check input power supply
Too short Acc time Increase the Acc time
The rotating motor restarts after stop Set to restart after speed detection
E-05
Over-voltage when
decelerating
Too short Dec time Prolong Dec time
Potential or big inertia load Increase the brake power of external brake unit
E-06
Over-voltage
when constant speed
running
Abnormal input voltage Check input power supply
Too short Acc/Dec time Increase the Acc/Dec time
Abnormal change of input voltage Install input reactor
Too big the load inertia Connect suitable braking unit
E-07
Inverter power supply
over-voltage
Abnormal input voltage Check input power or ask for service
E-08
Inverter overheat
Duct blockage Clean the duct and improve ventilation condition
Ambient temperature too high
Improve ventilation condition and decrease carrier fre-
quency
Fan is broken Change the fan
IGBT module is abnormal Ask for help
E-09
Inverter overload
Too short Acc time Increase the Acc time
DC braking current is too big Reduce DC braking current and increase braking time
V/F curve is not suitable Adjust V/F curve and torque boost value