Chapter 7 Fault Diagnosis and Trouble Shooting
7.1 Faults and Solutions
The inverter has a total of 34 warning information and protection functions. Once
a fault occ-urs, the protection function will act, the inverter will stop output, the
inverter fault relay contact will act, and the fault code will be displayed on the
inverter display panel. user before seeking service, you can conduct selfexamin-
ation according to the prompts in this section, analyze the cause of the fault, and
find out the solution. If it belongs to the reasons stated in the dot-ted box, please
seek service, contact the agent of the inverter you purchased or directly con-tact
our company.
Among the 21 warning messages, E033 is a hardware overcurrent or overvoltage
signal. Under normal circumstances, a hardware overvoltage fault causes E033
to alarm.
Display
Fault name
Possible Causes
Solutions
E001
Bus under-
voltage
u
instantaneous power failure;
u
input voltage of the inverter
is not within the specified
requirements;
u
bus voltage is abnormal;
u
rectifier bridge and buffer
resistance is abnormal;
u
drive board is abnormal;
u
main control board is
abnormal.
u
fault reset
u
adjust to normal voltage
u
seek technical support
u
seek technical support
u
seek technical support
u
seek technical support
E002
Over-voltage
during
acceleration
u
input voltage is too high
；
u
external force dragging
motor running in the process
of acceleration
；
u
acceleration time is too
short
；
u
have no install brake unit or
brake resistance.
u
adjust to normal
voltage
；
u
cancel external force or
add a brake resistance
；
u
increase acceleration
time
；
u
install brake unit or brake
resistance.
E003
Over-voltage
at constant
speed
running
u
input voltage is too high
；
u
external force dragging
motor running in the process
of running.
u
adjust to normal voltage
u
cancel external force or
add a brake resistance.
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C
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