User Manual of A90 Series Inverter
256
E03
Instantaneous
overvoltage
1.
The deceleration time is too
short, and the motor has too
much regenerated energy.
2.
The braking unit or braking
resistor forms an open
circuit.
3.
The braking unit or braking
resistor does not match.
4. The power voltage is too
high.
5. The energy consumption
braking function is not enabled.
1.
Increase the deceleration
time.
2.
Check the wiring of the
braking unit and braking
resistor.
3.
Use a suitable braking
unit/braking resistor.
4.
Reduce the power voltage to
the specified range.
5.
For the model of the built-in
braking unit, set F15.30 to 1,
and enable the energy
consumption braking
.
E04
Steady-state
overcurrent
The same as E02
The same as E02
E05
Steady-state
overvoltage
Same with E03
Same with E03
E06
Steady-state
undervoltage
1.
The input power supply is
subject to phase loss.
2.
The terminals of the input
power supply are loose.
3.
The voltage of the input
power supply drops too
much.
4.
The switch contacts of the
input power supply are
aging.
1.
Check the input power
supply and wiring.
2.
Tighten the screws of input
terminals.
3.
Check the air circuit breaker
and contactor.
E07
Input phase loss
1.
The input power supply is
subject to phase loss.
2.
The input power supply
fluctuates greatly.
1.
Check the input power
supply.
2.
Check the wiring of the
input power supply.
3.
Check whether the terminal
is loose
4.
Use a voltage regulator on
the input side.
E08
Output phase loss
1.
The output terminals U, V
and W have phase losses.
1.
Check the connection
between the inverter and
motor.
2.
Check whether the output
terminal is loose.
3.
Check whether the motor
winding is disconnected.
E09
Inverter overload
1.
The acceleration and
1.
Increase the acceleration and
