V5 series inverter
91
DC injection braking current is too big
Reduce DC injection braking current and prolong braking
time
V/F curve is not suitable
Adjust V/F curve and torque boost value
The rotating motor restarts after stop
Set “start of fly” function
Low AC supply voltage
Check AC supply voltage
Too heavy load
Select a high power inverter
E-10
Motor overload
V/F curve is not suitable
Adjust V/F curve and torque boost value
Low AC supply voltage
Check AC supply voltage
Common motor has operated with heavy load
at low speed for a long time
Select motor with frequency conversion if it requires to
operate for a long time
Unsuitable motor’s overload protection
coefficient
Set motor’s overload protection coefficient correctly
The motor is blocked or the load is too big
Check load
E-11
Low voltage durning
operating
Too low AC supply voltage
Check AC supply voltage
E-12
IGBT protection
Instant over current of inverter
Refer to countermeasure of over current
Short-circuit among 3-phase output or
line-to-ground short circuit
Rewiring
Vent is obstructed or fan is damaged
Clean the vent or change the fan
Over-temperature
Reduce environment temperature
Wires or connectors of control board are loose
Check and rewiring
Current waveform distorted due to output phase
loss
Check wiring
Auxiliary power is damaged and inverter
voltage is low
Seek factory or agent for service
Abnormal control board
Seek factory or agent for service
E-13
Peripheral equipment
fault
Emergency stop for peripheral equipment
terminal close
Break external fault terminal after dealing with the
external fault
E-14
Current
detection circuit
has fault
Wires or connectors of control board are loose
Check and rewiring
Auxiliary powe is damaged
Seek factory or agent for service
Hall sensor is damaged
Seek factory or agent for service
Amplifying circuit is abnormal
Seek factory or agent for service
E-15
RS485
Communication error
Baud rate is not suitable
Set suitable baud rate
Serial port communication error
Press
key to reset
，
or seek service
Improper setting of alarm parameter
Modify the setting of P3.09
～
P3.12
Host PC does not work
Check host PC, check the wiring
E-16
System disturbance
Severe disturbance
Press
key to reset or install power filter at the input
side of the inverter
W/R error of DSP in main control board
Press keys to reset or seek service
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