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Chapter V Basic Operation Instructions
147
Fault
code
Fault type
Possible cause of
failure
Countermeasures
Large load inertia
Consider using an energy-saving brake
component.
E007
Undervoltage during
running
Abnormal input voltage Check the power voltage.
E008
Motor
overload
alarm
The
V/F
curve
is
improper.
Set the V/F curve and the torque boost
correctly.
Extremely low power
grid voltage
Check the power grid voltage.
The
general
motor
operates for a long time
at a low speed with a
large load.
Special motor can be selected for
long-term and low-speed operation.
Incorrect motor rated
current
Set the motor rated current correctly.
Motor stalled or a large
sudden change of load
Check the load.
E009
Drive
overload
alarm
The acceleration time is
too short.
Extend the acceleration time
Excessive DC braking
capacity
Reduce the DC braking current, and
extend the braking time.
The
V/F
curve
is
improper.
Adjust the V/F curve and the torque
boost.
When an instant stop
occurs, restart the motor
in rotation.
Set the start mode F2.00 to speed
tracking restart function.
Extremely low power
grid voltage
Check the power grid voltage.
Excessive load
Select a drive with a larger power.
E010
Drive
module
protection
Instantaneous
overcurrent of drive
See overcurrent countermeasures
The output three phases
have
phase-to-phase
short circuit
Or grounded short circuit
Rewiring
Blocked air duct or
damaged fan
Clear the air duct or replace the fan
Too
high
ambient
temperature
Reduce the ambient temperature.
Loose wire connection or
plug-in of control board
Check and reconnect the wire
Abnormal
current
waveform caused by
output phase loss etc.
Check wiring
Damaged
auxiliary
power
supply,
undervoltage of drive
Seek for service.