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4 Troubleshooting
22
Load inertia is a bit big
Use energy consumption
subassembly
E007 controlpower
supply overvoltage
Unwonted input voltage
Check input power supply or look for service
Accel time is set to too
short
Prolong accelerating time
DC injection braking is
too big
Reduce DC injection braking
current
，
prolong braking time
improper V/F curve
Adjust V/F curve and torque
boost
Restart rotating motor
Set speed checking restart
function
power source voltage is
too low
check power source voltage
E008 Inverter
overload
Load is too big
Choose inverter with high-power
improper V/F curve
Adjust V/F curve and torque boost
power source voltage is
too low
check power source voltage
General motor run at low
speed with big load
Can choose frequency conversion
motor for long time low speed run
motor overload
protection factor set
incorrectly
to set motor overload protection
factor correctly
E009 Motor
overload
motor blocked up or load change
too suddenly and
quickly
Check the load
Air-path blocked
To clear air-path or improve
ventilation condition
Ambient temperature is too high Improve ventilation condition,
lower carrier frequency
E010 inverter
over
heating
Run with large load long time
Use fan outside to radiate
E011
reserved
E012
reserved
Transient overcurrent of the
inverter
Refer to countermeasure for overcurrent
phase to phase short
circuit or earthing short
circuit of output 3 phase
wiring again
Air-path blocked or fan damaged To clear air-path or replace the fan
Ambient temperature is too high Lower ambient temperature
Connecting wire or insert on
control board loose
Check and connect the wire again
Unwonted current wave caused
by missing output phase etc.
Check wiring
Assistant power supply damaged
and drive voltage lacking
Look for service from manufacturer or agent
E013 Inverting module
protection
Unwonted control board
Look for service from manufacturer or agent
Summary of Contents for EDS780 Series
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