INVT GD300-21 Drive

INVT GD300-21 Drive Fault Codes:

Fault Code and Meaning	Cause and Remedy
OUT1 [1] Inverter unit U-phase protection	Cause: ACC is too fast. IGBT module is damaged. Misacts caused by interference. Drive wires are poorly connected. To-ground short circuit occurs. Remedy: Increase ACC time. Replace the power unit. Check drive wires. Check whether there is strong interference surrounding the peripheral device.
OUT2 [2] Inverter unit V-phase protection	Cause: (See OUT1 causes). Remedy: Refer to solutions for OUT1.
OUT3 [3] Inverter unit W-phase protection	Cause: (See OUT1 causes). Remedy: Refer to solutions for OUT1.
OV1 [7] Overvoltage during acceleration	Cause: Exception occurred to input voltage. Large energy feedback. Remedy: Check the input power. Check whether load DEC time is too short. Check if the motor starts during rotating. Check if additional dynamic brake components are required.
OV2 [8] Overvoltage during deceleration	Cause: Exception occurred to input voltage. Large energy feedback. Remedy: Refer to solutions for OV1.
OV3 [9] Overvoltage during constant speed running	Cause: Exception occurred to input voltage. Large energy feedback. Remedy: Refer to solutions for OV1.
OC1 [4] Overcurrent during acceleration	Cause: ACC/DEC is too fast. The voltage of the grid is too low. Inverter power is too small. Load transient or exception occurred. To-ground short circuit or output phase loss occurred. Strong external interference sources. Remedy: Increase ACC/DEC time. Check the input power. Select the inverter with larger power. Check if the load is short circuited (to-ground short circuit or line-to-line short circuit) or the rotation is not smooth. Check the output wiring. Check if there is strong interference.
OC2 [5] Overcurrent during deceleration	Cause: (See OC1 causes). Remedy: Refer to solutions for OC1.
OC3 [6] Overcurrent during constant speed running	Cause: (See OC1 causes). Remedy: Refer to solutions for OC1.
UV [10] Bus undervoltage fault	Cause: The voltage of the grid is too low. Remedy: Check the grid input power.
OL1 [11] Motor overload	Cause: The grid voltage is too low. The motor rated current is set incorrectly. The motor stall occurs or the load transient is too large. Remedy: Check the grid voltage. Reset the motor rated current. Check the load and adjust the torque boost quantity.
OL2 [12] Inverter overload	Cause: ACC is too fast. The motor in rotating is restarted. The voltage of the grid is too low. Load is too large. Remedy: Increase ACC time. Avoid restart after stop. Check the grid voltage. Select the inverter with larger power. Select a proper motor.
SPI [13] Phase loss on input side	Cause: Phase loss or violent fluctuation occurred on input R, S, T. Remedy: Check the input power. Check the installation wiring.
SPO [14] Phase loss on output side	Cause: Phase loss occurred to U, V, W output (or the three phases of motor is asymmetrical). Remedy: Check the output wiring. Check the motor and cables.
OH1 [15] Rectifier module overheating	Cause: Air duct is blocked or fan is damaged. Ambient temperature is too high. Long-time overload running. Remedy: Ventilate the air duct or replace the fan. Lower the ambient temperature.
OH2 [16] Inverter module overheat	Cause: Air duct is blocked or fan is damaged. Ambient temperature is too high. Long-time overload running. Remedy: Ventilate the air duct or replace the fan. Lower the ambient temperature.
EF [17] External fault	Cause: S external faulty input terminal action. Remedy: Check external device input.
CE [18] RS485 communication fault	Cause: Baud rate is set improperly. Communication line fault. Incorrect communication address. Communication suffers from strong interference. Remedy: Set proper baud rate. Check the wiring of communication interfaces. Set the communication address correctly. Replace or change the wiring to enhance the anti-interference capacity.
ItE [19] Current detection fault	Cause: Poor contact of the connector of control board. Hall component is damaged. Exception occurred to amplification circuit. Remedy: Check the connector and re-plug. Replace the hall component. Replace the main control board.
tE [20] Motor autotuning fault	Cause: The motor capacity does not match the inverter capacity. Motor parameter is set improperly. The parameters gained from autotuning deviate sharply from the standard parameters. Autotuning timeout. Remedy: Change the inverter model. Set proper motor type and nameplate parameters. Empty the motor load and carry out autotuning again. Check the motor wiring and parameter setup. Check whether the upper limit frequency is larger than 2/3 of the rated frequency.
EEP [21] EEPROM operation fault	Cause: Error in reading or writing control parameters. The EEPROM is damaged. Remedy: Press STOP/RST to reset. Replace the main control board.
PIDE [22] PID feedback offline fault	Cause: PID feedback offline. PID feedback source disappears. Remedy: Check PID feedback signal wires. Check PID feedback source.
END [24] Running time reached	Cause: The actual running time of the inverter is longer than the internal set running time. Remedy: Ask for the supplier and adjust the set running time.
OL3 [25] Electronic overload fault	Cause: The inverter reports overload pre-alarm according to the setting. Remedy: Check the load and the overload pre-alarm points.
PCE [26] Keypad communication fault	Cause: Keypad cable connected improperly or disconnected. Keypad cable too long, causing strong interference. Keypad or mainboard communication circuit error. Remedy: Check the keypad cable to determine whether a fault occurs. Check for and remove the external interference source. Replace the hardware and seek maintenance services.
UPE [27] Parameter upload error	Cause: Keypad cable connected improperly or disconnected. Keypad cable too long, causing strong interference. Keypad or mainboard communication circuit error. Remedy: Check for and remove the external interference source. Replace the hardware and seek maintenance services.
DNE [28] Parameter download error	Cause: Keypad cable connected improperly or disconnected. Keypad cable too long, causing strong interference. Data storage error occurred to the keypad. Remedy: Check for and remove the external interference source. Replace the hardware and seek maintenance services. Re-back up the data on the keypad.
ETH1 [32] To-ground short-circuit fault 1	Cause: Inverter output is short connected to the ground. There is a fault in the current detection circuit. Remedy: Check whether the motor wiring is normal/the motor is short circuited to the ground. Replace the hall component. Replace the main control panel/drive board.
ETH2 [33] To-ground short-circuit fault 2	Cause: Inverter output is short connected to the ground. There is a fault in the current detection circuit. Remedy: Check whether the motor wiring is normal/the motor is short circuited to the ground. Replace the hall component. Replace the main control panel/drive board.
dEu [34] Speed deviation fault	Cause: The load is too heavy or stalled. Remedy: Check the load to ensure it is proper, and increase the detection time. Check whether the control parameters are set properly.
STo [35] Mal-adjustment fault	Cause: SM control parameters are set incorrectly. Autotuned parameters are not accurate. The inverter is not connected to the motor. Remedy: Check the load and ensure the load is normal. Check whether control parameters are set correctly. Increase the mal-adjustment detection time.
LL [36] Electronic underload fault	Cause: The inverter reports underload pre-alarm according to the setting. Remedy: Check the load and the underload pre-alarm points.
E_FAN [37] Auxiliary fan fault	Cause: The fan inverter is in fault. Remedy: Check the fault code on the touch screen.
PSF [38] Phase sequence fault	Cause: The phase sequence on the input side of the power is negative. Remedy: Swap any two power input cables.
Communication interruption	Cause: RS485 communication port is disconnected. Remedy: Check whether the communication cable is loose or dropped.
L-AUP [44] Low auxiliary pressure fault	Cause: Auxiliary pressure is too low at start-up. Remedy: Check whether P15.06 and P15.07 are set properly.
HAnd [45] Handshake failure	Cause: The handshake process timeout. Remedy: Check whether the handshake between the Plott controller and inverter is performed according to the handshake protocol. Check whether P15.10 is set properly.