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Fault Code fault in Emotron VS Series Drive Description, Causes, and Solutions

Err01 fault indicates Accel overcurrent. This means the inverter's output current has exceeded the safe threshold during the motor's acceleration phase. Possible Causes: 1: The output circuit is grounded or short circuited. 2: The acceleration time is too short. 3: Manual torque boost or V/F curve is not appropriate. 4: The voltage is too low. 5: The startup operation is performed on the rotating motor. 6: A sudden load is added during acceleration. 7: The AC drive model is of too small power class. Solutions: 1: Eliminate external faults. 2: Increase the acceleration time. 3: Adjust the manual torque boost or V/F curve. 4: Adjust the voltage to normal range. 5: Select rotational speed tracking restart or start the motor after it stops. 6: Remove the added load. 7: Select an AC drive of higher power class.

Err02 fault indicates Decel overcurrent. This means the inverter's output current has exceeded the safe threshold during the motor's deceleration phase. Possible Causes: 1: The output circuit is grounded or short circuited. 2: The deceleration time is too short. 3: The voltage is too low. 4: A sudden load is added during deceleration. 5: The braking unit and braking resistor are not installed. Solutions: 1: Eliminate external faults. 2: Increase the deceleration time. 3: Adjust the voltage to normal range. 4: Remove the added load. 5: Install the braking unit and braking resistor.

Err03 fault indicates Constant-speed overcurrent. This means the inverter's output current has exceeded the safe threshold while the motor was operating at a steady, constant speed. Possible Causes: 1: The output circuit is grounded or short circuited. 2: The voltage is too low. 3: A sudden load is added during operation. 4: The AC drive model is of too small power class. Solutions: 1: Eliminate external faults. 2: Adjust the voltage to normal range. 3: Remove the added load. 4: Select an AC drive of higher power class.

Err04 fault indicates Accel overvoltage. This means the drive's internal DC bus voltage has risen above the maximum safe limit during motor acceleration. Possible Causes: 1: The input voltage is too high. 2: An external force drives the motor during acceleration. 3: The acceleration time is too short. 4: The braking unit and braking resistor are not installed. Solutions: 1: Adjust the voltage to normal range. 2: Cancel the external force or install a braking resistor. 3: Increase the acceleration time. 4: Install the braking unit and braking resistor.

Err05 fault indicates Decel overvoltage. This means the drive's internal DC bus voltage has risen above the maximum safe limit during motor deceleration. Possible Causes: 1: The input voltage is too high. 2: An external force drives the motor during deceleration. 3: The deceleration time is too short. 4: The braking unit and braking resistor are not installed. Solutions: 1: Adjust the voltage to normal range. 2: Cancel the external force or install the braking resistor. 3: Increase the deceleration time. 4: Install the braking unit and braking resistor.

Fault Display fault in Emotron VSB Drive Description, Causes, and Solutions

Err06 fault indicates Constant-speed overvoltage. This means the inverter's internal DC bus voltage exceeded the safe limit while the motor was operating at a steady, constant speed. Possible Causes: 1: The input voltage is too high. 2: An external force drives the motor during deceleration. Solutions: 1: Adjust the voltage to normal range. 2: Cancel the external force or install the braking resistor.

oC1 fault indicates Accel overcurrent. This means the inverter's output current has exceeded the safe threshold during the motor's acceleration phase. Possible Causes: 1: Torque boost is too big under V/f control. 2: Starting frequency is too high. 3: Accel time is too short. 4: Motor parameters are improperly set. 5: Output short circuit (phase-to-phase short circuit or output ground short circuit). 6: Overload is too heavy. 7: Inappropriate V/f curve under V/f control. 8: Restart the rotating motor. Solutions: 1: Reduce torque boost value. 2: Drop starting frequency. 3: Prolong the Accel time. 4: Set the parameters correctly according to motor nameplate. 5: Check motor connection and output ground impedance. 6: Reduce the load. 7: Set V/f curve correctly. 8: Reduce current limited value or start through speed search.

Err07 fault indicates Bus undervoltage. This means the DC bus voltage has dropped below the minimum threshold required for proper inverter operation. Possible Causes: 1: Instantaneous power failure occurs on the input power supply. 2: The AC drive's input voltage is not within the allowable range. 3: The bus voltage is abnormal. 4: The rectifier bridge and buffer resistor are faulty. 5: The drive board is faulty. 6: The main control board is faulty. Solutions: 1: Reset the fault. 2: Adjust the voltage to normal range. 3: Contact the agent or CG.

oC2 fault indicates Constant-speed overcurrent. This means the inverter's output current has exceeded the safe threshold while the motor was operating at a steady, constant speed. Possible Causes: 1: Output short circuit (phase-to-phase short circuit or output ground short circuit). 2: Overload is too heavy. 3: Power rating of the drive is relatively small. 4: Input voltage is too low. Solutions: 1: Check motor connection and output ground impedance. 2: Reduce the load. 3: Select appropriate drive power rating. 4: Check power grid voltage.

Err08 fault indicates Short circuit. This means there is an abnormally high current flow due to a direct connection between phases or to ground, bypassing the normal load. Possible Causes: 1: The output circuit is grounded or short circuited. 2: The connecting cable of the motor is too long. 3: The module overheats. 4: The internal connections become loose. 5: The main control board is faulty. 6: The drive board is faulty. 7: The inverter module is faulty. Solutions: 1: Eliminate external faults. 2: Install a reactor or an output filter. 3: Check the air filter and the cooling fan. 4: Connect all cables properly. 5: Contact the agent or CG.

oC3 fault indicates Decel overcurrent. This means the inverter's output current has exceeded the safe threshold during the motor's deceleration phase. Possible Causes: 1: Output short circuit (phase-to-phase short circuit or output ground short circuit). 2: Load inertia is too big. 3: Decel time is too short. 4: Input voltage is too low. Solutions: 1: Check motor connection and output ground impedance. 2: Use dynamic brake. 3: Prolong the Decel time. 4: Check power grid voltage.

Err09 fault indicates Power input phase loss. This means that one or more phases from the main AC power supply feeding the inverter are missing or disconnected. Possible Causes: 1: The three-phase power input is abnormal. 2: The drive board is faulty. 3: The lightening board is faulty. 4: The main control board is faulty. Solutions: 1: Eliminate external faults. 2: Contact the agent or CG.

ov1 fault indicates Accel overvoltage. This means the drive's internal DC bus voltage has risen above the maximum safe limit during motor acceleration. Possible Causes: 1: Load inertia is too big. 2: Abnormal input voltage. 3: Output short circuit (phase-to-phase short circuit or output ground short circuit). Solutions: 1: Use dynamic brake. 2: Check power grid voltage. 3: Check motor connection and output ground impedance.

Err10 fault indicates Power output phase loss. This means there is a missing or disconnected phase in the power being delivered from the inverter to the motor. Possible Causes: 1: The cable connecting the AC drive and the motor is faulty. 2: The AC drive's three-phase outputs are unbalanced when the motor is running. 3: The drive board is faulty. 4: The module is faulty. Solutions: 1: Eliminate external faults. 2: Check whether the motor Three-phase winding is normal. 3: Contact the agent or CG.

ov2 fault indicates Constant-speed overvoltage. This means the inverter's internal DC bus voltage exceeded the safe limit while the motor was operating at a steady, constant speed. Possible Causes: 1: Load variation is too big. 2: Abnormal input voltage. 3: Output short circuit (phase-to-phase short circuit or output ground short circuit). 4: Improper parameter setting of regulator under SVC control. Solutions: 1: Check the load. 2: Check power grid voltage. 3: Check motor connection and output ground impedance. 4: Properly set regulator parameters.

Err11 fault indicates Motor overload. This means the motor is drawing current exceeding its thermal or operational capacity for an extended period. Possible Causes: 1: E0-17 is set improperly. 2: The load is too heavy or locked-rotor occurs on the motor. 3: The AC drive model is of too small power class. Solutions: 1: Set E0-17 correctly. 2: Reduce the load and check the motor and the mechanical condition. 3: Select an AC drive of higher power class.

ov3 fault indicates Decel overvoltage. This means the drive's internal DC bus voltage has risen above the maximum safe limit during motor deceleration. Possible Causes: 1: Load inertia is too big. 2: Abnormal input voltage. Solutions: 1: Use dynamic braking. 2: Check power grid voltage.

Err12 fault indicates Inverter overload. This means the inverter is outputting a current beyond its rated capacity for a duration that exceeds its safe limits. Possible Causes: 1: The load is too heavy or locked-rotor occurs on the motor. 2: The AC drive model is of too small power class. Solutions: 1: Reduce the load and check the motor and mechanical condition. 2: Select an AC drive of higher power class.

FAL fault indicates Module protection. This means the inverter's internal hardware protection for the power module has been triggered due to abnormal operating conditions. Possible Causes: 1: Output short circuit (phase-to-phase short circuit or output ground short circuit). 2: Fan damaged or air duct blocked. 3: Direct connection of inverter module. 4: Switching power supply damaged. 5: Control board abnormal. 6: Ambient temperature is too high. 7: Loose connection of control board. 8: Overvoltage or overcurrent. Solutions: 1: Check motor connection and output ground impedance. 2: Clear the air duct or replace the fan. 3: Seek services. 4: Seek services. 5: Seek services. 6: Reduce ambient temperature. 7: Pull out and reinsert the cables of control board. 8: Handle it with the solutions of overvoltage or overcurrent.

Err13 fault indicates External equipment fault. This means the drive has received a fault signal from external equipment via its digital inputs (DI). Possible Causes: 1: External fault signal is input via DI. Solutions: 1: Reset the operation.

tUN fault indicates Parameter identification failed. This means the drive could not successfully complete the auto-tuning process to determine the motor's electrical characteristics. Possible Causes: 1: Bad motor connection. 2: Identification during rotation of the motor. 3: Bias between motor parameters and their setting is too big. Solutions: 1: Check motor connection. 2: Identification in stationary status of the motor. 3: Set the parameters correctly according to motor nameplate.

Err14 fault indicates Module overheat. This means the internal temperature of the inverter module has exceeded its safe operating limit. Possible Causes: 1: The ambient temperature is too high. 2: The air filter is blocked. 3: The fan is damaged. 4: The thermally sensitive resistor of the module is damaged. 5: The inverter module is damaged. Solutions: 1: Lower the ambient temperature. 2: Clean the air filter. 3: Replace the damaged fan. 4: Replace the damaged thermally sensitive resistor. 5: Replace the inverter module.

oL1 fault indicates Drive overloaded. This means the inverter is outputting a current higher than its rated capacity for a duration that exceeds its thermal overload limits. Possible Causes: 1: Torque boost is too big under V/f control. 2: Starting frequency is too high. Solutions: 1: Reduce torque boost value. 2: Drop starting frequency.

Err15 fault indicates EEPROM read/write fault. This means there is a hardware failure or data corruption issue with the inverter's internal memory chip. Possible Causes: 1: The EEPROM chip is damaged. Solutions: 1: Replace the main control board.

oL2 fault indicates Motor overloaded. This means the motor is drawing current exceeding its rated capacity, triggering the drive's thermal protection algorithm for the motor. Possible Causes: 1: Torque boost is too big under V/f control. 2: Inappropriate V/f curve under V/f control. 3: Motor parameters are improperly set. 4: Improper setting of motor overloaded protection time. 5: Motor stalled or sharp variation of load. 6: Long-term running of ordinary motor at low speed with heavy load. Solutions: 1: Reduce torque boost value. 2: Set V/f curve correctly. 3: Set the parameters correctly according to motor nameplate. 4: Properly set the motor overloaded protection time. 5: Identify the causes of motor stalling or check the load condition. 6: Select variable frequency motor.

Err16 fault indicates Motor auto-tuning cancelled. This means the motor parameter identification process was manually interrupted by the user. Possible Causes: 1: Since the identification process, press STOP / RST key. Solutions: 1: Press STOP / RST key to reset.

CtC fault indicates Current detection abnormal. This means the drive's internal current sensing circuitry has failed or detected an implausible current reading. Possible Causes: 1: Abnormal connection of control board. 2: Switching power supply damaged. 3: Hall device damaged. 4: Output ground leakage. Solutions: 1: Seek services. 2: Seek services. 3: Seek services. 4: Seek services.

Err17 fault indicates Motor auto-tuning fault. This means the drive encountered an error while trying to automatically measure and identify the motor's parameters. Possible Causes: 1: The motor and the inverter output terminals are not connected. 2: The motor does not disengage the load. 3: The electrical fault. Solutions: 1: Check the connection between the inverter and motor. 2: The motor is disengaged load. 3: Check the motor.

GdP fault indicates Output ground short-circuit protection. This means a short circuit to ground has been detected on the output side of the drive or the motor. Possible Causes: 1: Output connection ground short circuit. 2: Motor insulation abnormal. 3: Inverter module abnormal. 4: Output ground leakage current is too big. Solutions: 1: Check motor connection and output ground impedance. 2: Check the motor. 3: Seek services. 4: Seek services.

Err18 fault indicates Communication overtime error. This means the drive has lost communication with the connected PC or master device for a duration longer than the set timeout limit. Possible Causes: 1: The PC is not working properly. 2: The communication line is not normal. 3: H0 set communication parameters set incorrectly. Solutions: 1: Check the PC Connection. 2: Check the communication cable. 3: The communication parameters are set correctly.

ISF fault indicates Input power supply abnormal. This means there is an issue with the incoming AC power supply, such as severe phase imbalance or a wiring issue. Possible Causes: 1: Serious voltage imbalance among three phases of power supply. 2: Abnormal bus capacitance. 3: Abnormal input wiring of power supply. Solutions: 1: Check power grid voltage. 2: Seek services. 3: Check power supply input wiring.

Err19 fault indicates PID feedback loss. This means the active feedback signal for the PID controller has dropped below the minimum allowable threshold. Possible Causes: 1: PID feedback set value is less than F0.24. Solutions: 1: Check the PID feedback signal or set to an appropriate value F0.24.

oPL fault indicates Output phase loss. This means one or more phases in the power being delivered from the inverter to the motor are disconnected or severely unbalanced. Possible Causes: 1: Motor cable connection abnormal. 2: Imbalance among motor three phases. 3: Incorrect setting of vector control parameters. Solutions: 1: Check motor connection. 2: Check or replace the motor. 3: Correctly set vector control parameters.

Err20 fault indicates Continuous running time reached. This means the inverter has operated continuously for the duration specified by its running time limit parameter. Possible Causes: 1: Set the running time to reach this function. Solutions: 1: Refer C1.14 Description.

oH1 fault indicates Heat sink thermal protection. This means the temperature of the drive's internal heat sink has exceeded the safe operating threshold. Possible Causes: 1: Ambient temperature is too high. 2: Fan damaged. 3: Air duct blocked. 4: Temperature sensor abnormal. 5: Inverter module abnormal. Solutions: 1: Drop ambient temperature. 2: Replace the fan. 3: Clear air duct. 4: Seek services. 5: Seek services.

Err21 fault indicates Parameter upload fault. This means an error occurred while trying to copy or upload parameters from the inverter to an external parameter copy card. Possible Causes: 1: Is not installed or is not plugged parameter copy card. 2: Parameter copy card abnormalities. 3: The control board abnormalities. Solutions: 1: A copy of the card is properly installed parameters. 2: Contact for technical support.

oH3 fault indicates Module temperature detection undisconnected. This means the drive's internal temperature sensing circuit is failing to provide valid readings or is detecting an extreme out-of-bounds temperature. Possible Causes: 1: Module detection circuit damaged. 2: Thermistor damaged. 3: Ambient temperature is too low. Solutions: 1: Seek services. 2: Seek services. 3: Raise ambient temperature.

Err22 fault indicates Parameter download fault. This means an error occurred while trying to copy or download parameters from the external copy card to the inverter. Possible Causes: 1: Is not installed or is not plugged parameter copy card. 2: Parameter copy card abnormalities. 3: The control board abnormalities. Solutions: 1: A copy of the card is properly installed parameters. 2: Contact for technical support.

PEr fault indicates External equipment error. This means the drive has received a fault signal from external machinery or an external sensor via its digital input terminals. Possible Causes: 1: External fault terminal is enabled. 2: Stall condition lasts too long. Solutions: 1: Check the status of external fault terminal. 2: Check if the load is abnormal.

Err23 fault indicates Braking unit fault. This means there is an issue detected in the braking circuit, external resistor, or associated hardware. Possible Causes: 1: The brake line failure or damage the brake pipe. 2: An external braking resistor is too small. Solutions: 1: Check the brake unit, replace the brake pipe. 2: Increasing the braking resistor.

to2 fault indicates Consecutive running time attained. This means the drive has been operating without stopping for a continuous duration that exceeds the pre-programmed time limit. Possible Causes: 1: "Consecutive running time attained" enabled. Solutions: 1: See specification of Group E0.

Err24 fault indicates Module temperature detection disconnection. This means the drive has lost the signal from its internal temperature monitoring sensor, usually due to a physical break. Possible Causes: The temperature sensor failure or cable break. Solutions: Contact for technical support.

to3 fault indicates Cumulative running time attained. This means the total accumulated running time of the drive has reached the user-defined maximum threshold. Possible Causes: 1: "Cumulative running time attained" enabled. Solutions: 1: See specification of Group E0.

Err25 fault indicates Load becoming 0. This means the current drawn by the motor has dropped below the threshold defined by parameter E0.22, indicating a possible loss of load (like a broken belt or dry pump). Possible Causes: The AC drive running current is lower than E0.22. Solutions: Check that the load is disconnected or the setting E0-22 and E0-23 is correct.

TrC fault indicates Port communication abnormal. This means the serial communication link between the drive and an external controller or PC has been disrupted or configured incorrectly. Possible Causes: 1: Improper setting of baud rate. 2: Communication port disconnection. 3: Upper computer/device does not work. 4: Drive communication parameter error. Solutions: 1: Set properly. 2: Reconnect. 3: Make upper computer/device work. 4: Set properly.

Err26 fault indicates With-wave current limit fault. This means the drive's output current has hit the strict hardware current limit, often due to a severe overload or a stalled motor condition. Possible Causes: 1: The load is too heavy or locked rotor occurs on the motor. 2: The AC drive model is of too small power class. Solutions: 1: Reduce the load and check the motor and mechanical condition. 2: Select an AC drive of higher power class.

oCr fault indicates Benchmark protection. This means an internal hardware fault, specifically related to the reference voltage or benchmark switching power, has been detected. Possible Causes: 1: Switching power supply damaged. 2: Control board damaged. Solutions: 1: Seek services. 2: Seek services.

Err27 fault indicates Inverter soft-start relay is off. This means the soft-start bypass relay inside the inverter failed to close properly, likely due to insufficient incoming power or a hardware failure. Possible Causes: 1: The grid voltage is too low. 2: Rectifier module failure. Solutions: 1: Check the grid voltage. 2: Demand for technical support.

SP1 fault indicates 5V power supply out-of-limit. This means the drive's internal 5-volt DC control power supply has drifted outside of acceptable operational limits. Possible Causes: 1: Switching power supply damaged. 2: Control board damaged. Solutions: 1: Seek services. 2: Seek services.

Err28 fault indicates Software version compatibility fault. This means there is a mismatch between the firmware versions of the main control board and the display/control panel. Possible Causes: 1: The upper and lower transmission module parameters in the parameter version of the control panel version mismatch. Solutions: re-upload module parameters to pass down.

AIP fault indicates AI input out-of-limit. This means the analog input signal received by the drive is either too high or too low compared to the configured allowable range. Possible Causes: 1: Control board damaged. 2: AI input is too high or low. Solutions: 1: Seek services. 2: Set AI input within correct range.

Err29 fault indicates Instantaneous overcurrent. This means there was a sudden, massive spike in output current exceeding the hardware protection limit, usually caused by a short circuit or extreme sudden load. Possible Causes: 1: Inverter output circuit being grounded or short-circuit; 2: The acceleration and deceleration time is too short; 3: Manually torque boost or V/F curve not appropriate; 4: Voltage too low; 5: Start the running motor; 6: Sudden-load in the acceleration process; 7: Model selection of inverter power is too small. Solutions: 1: Troubleshooting peripheral problems; 2: To increase the acceleration time; 3: Adjust the manually torque boost or V/F curve; 4: Adjust the voltage to normal range; 5: Select RPM track start or start after motor stopped; 6: Cancel sudden-load; 7: Select the inverter with higher rating.

LoU fault indicates Undervoltage protection. This means the incoming mains voltage or internal DC bus voltage has dropped below the minimum required for safe operation. Possible Causes: 1: Input voltage abnormal. 2: Switching power supply abnormal. Solutions: 1: Check input power grid voltage. 2: Seek services.

Err30 fault indicates Instantaneous overvoltage. This means a sudden, extreme spike in the internal DC bus voltage was detected, exceeding the maximum safe limit. Possible Causes: 1: Input voltage is too high; 2: There is external force drag the motor to run in deceleration process; 3: The deceleration time is too short; 4: No installation of braking resistor. Solutions: 1: Adjust the voltage to normal range; 2: Cancel external force or install brake resistor; 3: To increase the deceleration time; 4: Install braking resistor.

Plo fault indicates PID detection out-of-limit. This means the feedback signal for the closed-loop PID controller has exceeded the acceptable deviation limits. Possible Causes: 1: PID feedback channel abnormal. 2: Inappropriate setting of PID parameters. Solutions: 1: Check the feedback channel. 2: Set properly.

Err39 fault indicates Motor temperature too high. This means the motor's internal temperature, as read by the connected PTC sensor, has exceeded the configured protection threshold. Possible Causes: 1: PTC sensor configuration not right. 2: Motor temperature protection value too small. 3: Motor temperature too high. Solutions: 1: Reset PTC sensor parameter. 2: Increase motor temperature protection value. 3: Wait until motor is cooled.

ICF fault indicates Inside communication fault. This means the internal data communication between the control board and the power board or microprocessors has failed. Possible Causes: 1: Drive chip abnormal. 2: Severe noise on site. Solutions: 1: Seek services. 2: Take corresponding countermeasures to the noise or seek service.

Err40 fault indicates The set running time ends. This means the drive's internal timer has reached the maximum allowed continuous running time configured in the parameters. Possible Causes: 1: Running time more than A0.25. Solutions: 1: Contact the dealer.

Err41 fault indicates Overload warning. This means the drive's output current has exceeded the pre-set overload warning threshold (E0.19) triggering a warning alert. Possible Causes: 1: when E0.18 = 00100 and the current output amp is more than E0.19. Solutions: 1: Check the current load.

A33 fault indicates Pre-warning of Weak Light. This means the drive's output frequency has remained at or below the lower limit of the PI output for longer than the set delay time, indicating a low-energy/weak light condition. Possible Causes: Output frequency is lower than or equal with lower limit of PI output frequency, and has continued under this state for a duration greater than delay time of weak light. Solutions: Check the lower limit of PI output frequency and weak-light delay the set value.

A34 fault indicates Pre-warning of Full-water. This means the water-level feedback signal has stayed below the set threshold for longer than the allowed delay time, triggering a full-water pre-warning. Possible Causes: Water-level feedback is lower than the set threshold and has continued under this state for a duration greater than the delay time. Solutions: Check the pre-warning point of water level.