INVT GD300-01A Series Drive

INVT GD300-01A Series Drive Fault Codes:

Fault Code and MeaningCause and Remedy
OUt1
Inverter unit U phase protection
Cause:

  • Acceleration is too fast.

  • Internal damage occurs to the IGBT of this phase.

  • Misacts caused by interference.

  • Drive wires are connected improperly.

  • Short-circuited to ground.




Remedy:

  • Increase acceleration time.

  • Replace power unit.

  • Check the drive wires.

  • Check whether peripheral equipment suffers from strong interference source.
OUt2
Inverter unit V phase protection
Cause:

  • Acceleration is too fast.

  • Internal damage occurs to the IGBT of this phase.

  • Misacts caused by interference.

  • Drive wires are connected improperly.

  • Short-circuited to ground.




Remedy:

  • Increase acceleration time.

  • Replace power unit.

  • Check the drive wires.

  • Check whether peripheral equipment suffers from strong interference source.
OUt3
Inverter unit W phase protection
Cause:

  • Acceleration is too fast.

  • Internal damage occurs to the IGBT of this phase.

  • Misacts caused by interference.

  • Drive wires are connected improperly.

  • Short-circuited to ground.




Remedy:

  • Increase acceleration time.

  • Replace power unit.

  • Check the drive wires.

  • Check whether peripheral equipment suffers from strong interference source.
OV1
Overvoltage at acceleration
Cause:

  • Input voltage is abnormal.

  • There is large energy feedback.




Remedy:

  • Check the input power.

  • Check if the deceleration time of the load is too short or the motor starts during the rotating, or dynamic brake units needs to be installed.
OV2
Overvoltage at deceleration
Cause:

  • Input voltage is abnormal.

  • There is large energy feedback.




Remedy:

  • Check the input power.

  • Check if the deceleration time of the load is too short or the motor starts during the rotating, or dynamic brake units needs to be installed.
OV3
Overvoltage at constant speed
Cause:

  • Input voltage is abnormal.

  • There is large energy feedback.




Remedy:

  • Check the input power.

  • Check if the deceleration time of the load is too short or the motor starts during the rotating, or dynamic brake units needs to be installed.
OC1
Overcurrent at acceleration
Cause:

  • Acceleration or deceleration is too fast.

  • Grid voltage is too low.

  • VFD power is too low.

  • Load transients or is abnormal.

  • Short-circuited to ground, output phase loss.

  • There is strong external interference.




Remedy:

  • Increase acceleration /deceleration time.

  • Check the input power.

  • Adopt the VFD with a larger power.

  • Check if the load is short circuited (short circuited to ground or between wires) or stall occurs.

  • Check the output wiring.

  • Check if there is strong interference.
OC2
Overcurrent at deceleration
Cause:

  • Acceleration or deceleration is too fast.

  • Grid voltage is too low.

  • VFD power is too low.

  • Load transients or is abnormal.

  • Short-circuited to ground, output phase loss.

  • There is strong external interference.




Remedy:

  • Increase acceleration /deceleration time.

  • Check the input power.

  • Adopt the VFD with a larger power.

  • Check if the load is short circuited (short circuited to ground or between wires) or stall occurs.

  • Check the output wiring.

  • Check if there is strong interference.
OC3
Overcurrent at constant speed
Cause:

  • Acceleration or deceleration is too fast.

  • Grid voltage is too low.

  • VFD power is too low.

  • Load transients or is abnormal.

  • Short-circuited to ground, output phase loss.

  • There is strong external interference.




Remedy:

  • Increase acceleration /deceleration time.

  • Check the input power.

  • Adopt the VFD with a larger power.

  • Check if the load is short circuited (short circuited to ground or between wires) or stall occurs.

  • Check the output wiring.

  • Check if there is strong interference.
UV
Bus undervoltage fault
Cause:

  • Grid voltage is too low.




Remedy:

  • Check the grid input power.
OL1
Motor overload
Cause:

  • Grid voltage is too low.

  • Rated current of the motor is set improperly.

  • Motor stalls or load transients.




Remedy:

  • Check grid voltage.

  • Reset rated current of the motor.

  • Check load and adjust torque boost quantity.
OL2
VFD overload
Cause:

  • Acceleration is too fast.

  • The motor is restarted during rotating.

  • Grid voltage is too low.

  • The load is too large.




Remedy:

  • Increase acceleration time.

  • Restart the motor after stop.

  • Check grid voltage.

  • Adopt the VFD with a larger power.

  • Select a proper motor.
SPI
Phase loss on input side
Cause:

  • Phase loss or fluctuation occurs to input R, S and T.




Remedy:

  • Check input power.

  • Check installation wiring.
SPO
Phase loss on output side
Cause:

  • Phase loss output occurs to U, V and W (or serious 3PH imbalance occurs to the load).




Remedy:

  • Check the output wiring.

  • Check the motor and cable.
OH1
Rectifier module overheating
Cause:

  • Air duct blocked or fan damaged.

  • Ambient temperature is too high.

  • Long-time overload running.




Remedy:

  • Ventilate the air duct or replace the fan.

  • Lower down the ambient temperature.
OH2
Inverter module overheating
Cause:

  • Air duct blocked or fan damaged.

  • Ambient temperature is too high.

  • Long-time overload running.




Remedy:

  • Ventilate the air duct or replace the fan.

  • Lower down the ambient temperature.
EF
External fault
Cause:

  • S external fault input terminal acts.




Remedy:

  • Check external equipment input.
CE
RS485 communication fault
Cause:

  • Baud rate is set improperly.

  • Communication line fault.

  • Communication address error.

  • Communication suffers strong interference.




Remedy:

  • Set proper baud rate.

  • Check the wiring of communication interfaces.

  • Set correct communication address.

  • Replace or change the wiring to improve anti-interference capacity.
ItE
Current detection fault
Cause:

  • Poor contact of controller board connector.

  • Hall components are damaged.

  • Amplifying circuit is abnormal.




Remedy:

  • Check the connector and re-plug wires.

  • Replace the hall.

  • Replace the main control board.
tE
Motor autotuning fault
Cause:

  • Motor capacity does not match VFD capacity.

  • Motor parameters are set improperly.

  • The deviation between the parameters obtained from autotuning and the standard parameter is huge.

  • Autotuning timeout.




Remedy:

  • Change the VFD model.

  • Set motor type and nameplate parameters correctly.

  • Empty the motor load and identify again.

  • Check the motor wiring and parameter setup.

  • Check whether upper limit frequency is larger than 2/3 of the rated frequency.
EEP
EEPROM operation error
Cause:

  • Error occurred to the writing/reading of control parameters.

  • EEPROM damaged.




Remedy:

  • Press STOP/RST to reset.

  • Replace the main control board.
PIDE
PID feedback offline fault
Cause:

  • PID feedback offline.

  • PID feedback source disappears.




Remedy:

  • Check PID feedback signal wire.

  • Check PID feedback source.
END
Running time reached
Cause:

  • The actual running time of the VFD is larger than the internally set time.




Remedy:

  • Ask supplier for help.

  • Adjust the set running time.
OL3
Electronic overload fault
Cause:

  • The VFD reports overload pre-alarm according to the set value.




Remedy:

  • Check the load and overload pre-alarm threshold.
IOV
Input overvoltage
Cause:

  • Input grid overvoltage.

  • Input overvoltage threshold (P18.46) is set improperly.




Remedy:

  • Check the input grid power supply.

  • Check the installation and wiring.

  • Ensure the setting value of P18.46 is proper.
IUV
Input undervoltage
Cause:

  • Input grid undervoltage.

  • Input undervoltage threshold (P18.47) is set improperly.




Remedy:

  • Check the input grid power supply.

  • Check the installation and wiring.

  • Ensure the setting value of P18.47 is proper.
ETH1
To-ground short-circuit fault 1
Cause:

  • VFD output is short circuited to ground.

  • Current detection circuit is faulty.




Remedy:

  • Check whether motor wiring is normal/motor is short circuited to ground.

  • Replace the hall.

  • Replace main control board/drive board.
ETH2
To-ground short-circuit fault 2
Cause:

  • Actual motor power setup differs sharply from the VFD power.




Remedy:

  • Reset correct motor parameters.
dEu
Speed deviation fault
Cause:

  • Load is too heavy or stall.




Remedy:

  • Check the load and ensure it is normal, increase the detection time.

  • Check whether control parameters are proper.
STo
Mal-adjustment fault
Cause:

  • Control parameters of synchronous motor is set improperly.

  • Autotuning parameters are inaccurate.

  • VFD is not connected to the motor.




Remedy:

  • Check the load and ensure the load is normal.

  • Check whether control parameters are set correctly.

  • Increase maladjustment detection time.
LL
Electronic underload fault
Cause:

  • The VFD reports underload pre-alarm according to the set value.




Remedy:

  • Detect the load and underload pre-alarm threshold.
PSF
Phase sequence fault
Cause:

  • The phase sequence on power input side is negative.




Remedy:

  • Swop any two of the power input cables.
SPOF
3PH current imbalance of the fan
Cause:

  • 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.




Remedy:

  • 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
Cause:

  • Rated fan current is set improperly.

  • Fan power is too small.

  • Fan stalls.




Remedy:

  • Check whether the set value of P21.00 is the same with the rated current of the fan nameplate, and whether the current transformation ratio (P21.01) is the same with current transformer nameplate.

  • Actually detected fan current is too large, it is recommended to increase the power.

  • Check whether the fan stalls.
E-FS
Expansion card Flash fault
Cause:

  • R/W error occurred to the calibration parameters.

  • The expansion card Flash is damaged.




Remedy:

  • Press STOP/RST to reset.

  • Replace the main control board.
E-SPI
Expansion card communication offline
Cause:

  • There is no data transmission between the expansion card and the main control board.




Remedy:

  • Check whether the pin header between the expansion card and the main control board is loosened or disconnected.
Touch screen communication interrupted
Cause:

  • 485 communication port is disconnected.




Remedy:

  • Check whether communication line is loosened.
P19.13 BIT0=1
Air filter blocked
Cause:

  • Air filter is abnormal.




Remedy:

  • Check air filter after stop.
P19.13 BIT1=1
Oil filter blocked
Cause:

  • Oil filter is abnormal.




Remedy:

  • Check oil filter after stop.
P19.13 BIT2=1
Separator blocked
Cause:

  • Separator is abnormal.




Remedy:

  • Check the separator after stop.
P19.13 BIT3=1
Precision splitter blocked
Cause:

  • Precision splitter is abnormal.




Remedy:

  • Check the precision splitter after stop.
P19.13 BIT8=1
Pressure pre-alarm
Cause:

  • Actual voltage is detected by P1 to be larger than the pre-alarm voltage set by P18.17.




Remedy:

  • Check whether solenoid valve is normal.

  • Check whether pressure control parameters are set correctly.
P19.13 BIT9=1
Temperature pre-alarm
Cause:

  • Actual temperature detected by PT1 is higher than the pre-alarm temperature set by P18.19.




Remedy:

  • Check whether fan control parameters are set correctly.

  • Whether the fan operates normally.

  • Fan power is too small to dissipate heat effectively.

  • Check whether there is lubricating oil.
P19.13 BIT10=1
Pressure alarm
Cause:

  • Actual voltage detected by P1 is larger than the alarm voltage set by P18.18.




Remedy:

  • Check whether solenoid valve is normal.

  • Check whether pressure control parameters are set correctly.
P19.13 BIT11=1
Temperature alarm
Cause:

  • Actual temperature detected by PT1 is higher than the alarm temperature set by P18.20.




Remedy:

  • Check whether fan control parameters are correct.

  • Whether fan operates normally.

  • Fan power is too small to dissipate heat effectively.

  • Check whether there is lubricating oil.
P19.13 BIT12=1
Pressure signal fault
Cause:

  • The actual voltage is detected by P1 to be less than 1V.




Remedy:

  • Pressure detection sensor is abnormal.

  • Pressure detection input P1 signal wire is disconnected.

  • Pressure signal interface does not select current signal.
P19.13 BIT13=1
Temperature signal fault
Cause:

  • PT100 sensor is disconnected.




Remedy:

  • Check whether the wiring of PT100 is normal.

  • Check whether temperature detection sensor is abnormal.

  • Temperature detection input circuit is abnormal.
P19.13 BIT14=1
Low-temperature protection pre-alarm
Cause:

  • The actual temperature detected by PT1 is less than the low temperature protection threshold set by P18.21.




Remedy:

  • Temperature detection sensor is abnormal.

  • Actual temperature is too low, and low-temperature pre-alarm is reported accordingly, and therefore the air compressor cannot start.
P19.14 BIT0=1
Part 1 needs maintenance
Cause:

  • The running time of part 1 exceeds the time set by P19.00.




Remedy:

  • Carry out maintenance after stop.
P19.14 BIT1=1
Part 2 needs maintenance
Cause:

  • The running time of part 2 exceeds the time set by P19.01.




Remedy:

  • Carry out maintenance after stop.
P19.14 BIT2=1
Part 3 needs maintenance
Cause:

  • The running time of part 3 exceeds the time set by P19.02.




Remedy:

  • Carry out maintenance after stop.
P19.14 BIT3=1
Part 4 needs maintenance
Cause:

  • The running time of part 4 exceeds the time set by P19.03.




Remedy:

  • Carry out maintenance after stop.
P19.14 BIT4=1
Part 5 needs maintenance
Cause:

  • The running time of part 5 exceeds the time set by P19.04.




Remedy:

  • Carry out maintenance after stop.
P19.14 BIT5=1
Auxiliary pressure signal fault
Cause:

  • The actual voltage detected by P2 is less than 1V.




Remedy:

  • Pressure detection sensor is abnormal.

  • Pressure detection input P2 signal wire is disconnected.
P19.14 BIT6=1
Auxiliary temperature signal fault
Cause:

  • PT100 sensor is disconnected.




Remedy:

  • Check whether the wiring of PT100 is normal.

  • Temperature detection sensor is abnormal.

  • Temperature detection input circuit is abnormal.
P19.14 BIT7=1
Auxiliary pressure pre-alarm
Cause:

  • The actual voltage detected by P2 is larger than the pre-alarm pressure set by P18.17.




Remedy:

  • Pressure detection sensor is abnormal.

  • The pressure is set to a too large value.

  • Adjust pressure PID regulator.
P19.14 BIT8=1
Auxiliary temperature pre-alarm
Cause:

  • The actual temperature detected by PT2 is larger than the pre-alarm temperature set by P18.19.




Remedy:

  • Temperature detection sensor is abnormal.

  • Temperature detection input circuit is abnormal, if not calibrated.

  • The starting temperature of the fan is set to a too high value.

  • The temperature of the fan is set to a too high value.

  • Fan power is too small to dissipate heat effectively.
P19.14 BIT9=1
Auxiliary pressure alarm
Cause:

  • The actual voltage detected by P2 is larger than the alarm pressure set by P18.18.




Remedy:

  • Pressure detection sensor is abnormal.

  • The voltage is set to a too high value.

  • Adjust pressure PID regulator.
P19.14 BIT10=1
Auxiliary temperature alarm
Cause:

  • The actual temperature detected by PT2 is higher than the alarm temperature set by P18.20.




Remedy:

  • Temperature detection sensor is abnormal.

  • Temperature detection input circuit is abnormal, if not calibrated.

  • The starting temperature of the fan is set to a too high value.

  • The temperature of the fan is set to a too high value.

  • The fan power is too small to dissipate heat effectively.
P19.14 BIT11=1
Maintenance timeout alarm
Cause:

  • Any part whose running time exceeds the set value will enter overtime maintenance stage, and hereafter, if the running time exceeds the time set by P18.45 again, maintenance timeout alarm will be reported.




Remedy:

  • Carry out maintenance on the timeout parts after stop.