INVT Goodrive300-01A Series, Руководство по эксплуатации

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Goodrive300-01A series VFD for air compressor Fault information and troubleshooting
-93-
Fault
code
Fault type Possible cause Solution
DNE
[28] Parameter
download error

Keypad line is poorly
contacted or disconnected.

Keypad wire is too long or
suffers strong interference.

Storage data in the keypad
is wrong.

Check the environment and
rule out the interference
source.

Replace the hardware, ask
for maintenance service.

Re-copy the data in the
keypad.
ETH1
[32] To-ground short
circuit fault 1

VFD output is short
circuited to ground.

Current detection circuit is
faulty.

Actual motor power setup
differs sharply from the
VFD power.

Check whether motor wiring
is normal/motor is short
circuited to ground.

Replace the hall.

Replace main control
board/drive board.

Reset correct motor
parameters.
ETH2
[33] To-ground short
circuit fault 2
dEu
[34] 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
[35] Maladjustment
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
[36] Electronic
underload fault

The VFD reports underload
pre-alarm according to the
set value.

Detect the load and
underload pre-alarm
threshold.
PSF
[38] Phase
sequence fault

The phase sequence on
power input side is
negative.

Swop any two of the power
input cables.
SPOF
[39] 3PH current
imbalance of
power-frequency fan

Phase loss occurs to 3PH
wiring of the fan.

Stator winding of 3PH of
the fan is abnormal.

Poor grid quality.

Check whether the fan is
disconnected or poorly
contacted.

Measure whether the 3PH
winding impedance of the
fan is balanced.