Goodrive300-01A series VFD for air compressor
Fault information and fault handling
-105-
Fault
code
Fault type
Possible cause
Solution
ETH2
To-ground
short-circuit fault 2
faulty.
• Actual motor power setup
differs sharply from the
VFD power.
• Replace the hall.
• Replace main control
board/drive board.
• Reset correct motor
parameters.
dEu
Speed deviation
fault
Load is too heavy or stall.
• Check the load and ensure
it is normal, increase the
detection time.
• Check whether control
parameters are proper.
STo
Mal-adjustment
fault
• Control parameters of
synchronous motor is set
improperly.
• Autotuning parameters are
inaccurate.
• VFD is not connected to
the motor.
• Check the load and ensure
the load is normal.
• Check whether control
parameters are set
correctly.
• Increase maladjustment
detection time.
LL
Electronic
underload fault
The VFD reports underload
pre-alarm according to the
set value.
Detect the load and underload
pre-alarm threshold.
PSF
Phase sequence
fault
The phase sequence on
power input side is negative.
Swop any two of the power
input cables.
SPOF
3PH current
imbalance of the
fan
• Phase loss occurs to the
connection of three phases
of the fan.
• Stator winding of three
phases of the fan is
abnormal.
• The quality of the power
grid is poor.
• Check whether the fan
wiring is disconnected or
poorly contacted.
• Measure whether the
impedance of the
three-phase winding of the
fan is balanced.
• Increase the set value
properly in P21.03 to
reduce the sensitivity of the
imbalance judgment.
OLF
Fan overload
• Rated fan current is set
improperly.
• Fan power is too small.
• Fan stalls.
• Check whether the set
value of P21.00 is the same
with the rated current of the
fan nameplate, and whether
Содержание GD300-01A
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