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User Manual of EM730/EM730E Series Inverter
303
E10
Inverter overheat
1.
The ambient temperature is too
high.
2.
The inverter is subject to poor
ventilation.
3.
The cooling fan fails.
1.
The operating environment of the
inverter should meet the
specifications.
2.
Improve the ventilation
environment and check whether
the air duct is blocked.
3.
Replace the cooling fan.
E11
Parameter setting
conflict
1.
There is a logic conflict in
parameter settings.
1.
Check whether parameters set is
illogical before the protection.
E13
Motor overload
1.
The acceleration and
deceleration time is too short.
2.
In the V/F drive mode, the V/F
curve setting is unreasonable.
3.
The load is too heavy.
1.
Increase the acceleration and
deceleration time.
2.
Reasonably set the V/F curve.
3.
Use a motor matching the load.
E14
External
protection
1.
The protection terminal of the
external device acts.
1.
Check the external device.
E15
Inverter memory
protection
1.
Interference results in memory
reading and writing errors.
2.
The internal memory of the
controller is read and written
repeatedly, causing damage to
the memory.
1.
Press the STOP/RESET key to
reset the controller and try again.
2.
For the parameters (e.g. frequency
setting) to be modified frequently,
set F10.56 to 11 after debugging.
E16
Communication
error
1.
Communication timeout is
enabled in the discontinuous
communication system.
2.
Communication is
disconnected.
1.
F10.03 is set to 0.0 in the
discontinuous communication
system.
2.
Adjust the F10.03 communication
timeout.
3.
Check whether the communication
cable is disconnected.
E17
Abnormality of
inverter
temperature
sensor
The inverter temperature sensor is
disconnected or short-circuited.
1.
Check whether the inverter
temperature sensor is connected
properly.
2.
Seek technical support.
E18
The soft start
relay is not
engaged.
1.
The power supply fails during
operation.
2.
The input power supply is
subject to phase loss.
3.
The terminals of the input
power supply are loose.
4.
The voltage of the input power
supply drops too much.
5.
The switch contacts of the
input power supply are aging.
1.
Stop the inverter before power-off,
or directly reset the protection.
2.
Check the input power supply and
wiring.
3.
Tighten the screws of input
terminals.
4.
Check the air circuit breaker and
contactor.