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The over current stall
prevention
parameters are set
improperly.
Ensure that current limit is enabled
(P3-19).
The setting of current limit level (P3-
18) is too large. Adjust it
between 120% and 150%.
The setting of current limit gain (P3-
20) is too small. Adjust it
between 20 and 40.
The AC drive power class
is small.
If output current exceeds rated motor
current or rated output
current of the
AC drive during stable running,
replace a drive of
larger power class.
The drive suffers external
interference.
View historical fault records. If the
current value is far from the
over
current level, find interference
source. If external interference does
not exist, it is the drive board or hall
device problem.
Over
voltage
during
acceleration
FU05
Input voltage is too high.
Adjust input voltage to normal
range.
An external force drives
motor during
acceleration.
Cancel the external force or install a
braking resistor.
The over voltage stall
prevention
parameters are set
improperly.
Ensure that the voltage limit function
is enabled (P3-23 ).
The setting of voltage limit (P3-22)
is too large. Adjust it between700 V
and 770 V.
The setting of frequency gain for
voltage limit (P3-24) is too small.
Adjust it between 30 and 50.
Braking unit and braking
resistor are
not installed.
Install braking unit and braking
resistor.
Acceleration time is too
short.
Increase acceleration time.
Over
voltage
during
deceleration
FU06
The over voltage stall
prevention
parameters are set
improperly.
Ensure that the voltage limit function
is enabled (P3-23 ).
The setting of voltage limit (P3-22)
is too large. Adjust it between 700 V
and 770 V.
The setting of frequency gain for
voltage limit (P3-24) is too small.
Adjust it between 30 and 50.
An external force drives
motor during
deceleration.
Cancel the external force or install
braking resistor.