Mitsubishi inverter fault code and processing method - Database & Sql Blog Articles

Crystal oscillator

Photocoupler

E.OC1 OC During Accubilation Overcurrent trip when accelerating When the output current of the inverter reaches or exceeds 200% of the rated current, the protection circuit operates, stopping the inverter output acceleration time is too short, increasing the acceleration time. Check if the output is shorted or grounded.
E.OC2 Steady Spd OC Is the overcurrent trip check at the fixed speed check whether the load is abrupt? Keep the load stable. Check if the output is shorted or grounded.
E.OC3 OC During Dec When the deceleration stops, the overcurrent trip deceleration time is too short and the deceleration time is increased. Check if the output is shorted or grounded.
E.OV1 OV During Accu, regenerative overvoltage during acceleration The regenerative energy from the motor causes the internal DC main circuit voltage of the inverter to rise or exceed the specified value, and the protection circuit operates to stop the inverter output. It may also be caused by the surge voltage of the power system. Accelerating too fast? Increase the acceleration time E.OV2 Steady Spd OV Is the regenerative overvoltage trip check at the fixed speed? Is the load abrupt? Keep the load stable.
E.OV3 OV During Dec When the deceleration stops, the regenerative overvoltage is decelerated too fast? Increase deceleration time E.THM Motor Overload Motor overload circuit Breaker motor overload reduces load. When it happens frequently, the capacity of the inverter and motor can be increased according to the process requirements.
E.THT Inv. Overload Inverter Overloading Inverter Overloading E.IPF Inst.Pwr. Loss Instantaneous Power Failure Protection Restoring Power Supply E.UVT Under Voltage There is a large-capacity motor in the low-voltage protection circuit to start the power supply system to avoid the loop. The effect of a large-capacity motor that starts frequently.
E.FIN H/Sink O/Temp Heat sink overheated ambient temperature is too high to enhance ventilation while reducing load E.BE Br. Cct. Fault Is the brake transistor alarm braking rate setting normal? E.GF Ground Fault Output Side Ground Fault Overcurrent Protection Motor or Cable Ground Fault Resolve Ground Fault E.OHT OH Fault External Thermal Relay Action Check if the motor overheats to reduce load and solve mechanical fault E.OLT Stll Prev STP stall prevention (display OL during operation) Motor overload reduces load. When it happens frequently, the capacity of the inverter and motor can be increased according to the process requirements.

Display code FR-DU04 Parameter unit FR-PU04 Fault name Fault cause handling method E.OPT Option Fault Option alarm option interface loose and reliable connection E.PE Corrupt Memry Parameter error Input parameters too many times, the inverter crashes. Reset the parameters after restoring the factory settings. When the inverter cannot be restored, replace the inverter E.PUE PU Leave Out The panel is released. The operation panel is securely installed. E.RET Retry No Over The number of retry attempts is less than the number of retry attempts. The inverter stops outputting. Check for an abnormality before the abnormality occurs. E.P24 DC 24V power supply output short circuit Check if the PC terminal is short-circuited? Repair the short circuit. Use the panel to reset or turn off the power to re-close when reset is required.
E.CTE operation panel power supply short circuit operation panel connection cable is short-circuited. Repair the short circuit.
E.CPU CPU Fault CPU error Check for loose connectors and reliable connections.
E.MB1~~E.MB7 Sequential Brake Error Check if the brake sequence is normal E.3 Fault 3 Option Abnormal communication option setting error or poor contact. Check the option settings and the operation is incorrect. The option connector socket is indeed connected.
E.6 Fault 6 CPU error When the built-in CPU has a communication error, the inverter stops outputting. The CPU communication error occurs and the inverter stops outputting. The power failure reset is restarted.
E.7 Fault 7 CPU error E.LF E.LF output phase loss protection When one phase of the inverter output three phases is disconnected, the inverter stops output. Check the disconnected output phase.
FN Fan Failure Is the fan failure cooling fan normal? Replace the fan.
OL OL stall prevents overcurrent motor from being used under overload conditions? Reduce the load oL oL Stall to prevent overvoltage from decelerating? Extending the deceleration time PS PS When the remote control operation is stopped, is the "STOP" button on the operation panel used to stop? Check the load status.
Err operation error, please operate accurately