iG5A, product manual - H2flow

• Fault remedyKeypaddisplayOver voltageLow voltageElectronicthermalExternal fault Acontact inputCauseDecel time is too short compared to theGD 2 of the load.Regenerative load is at the inverteroutput.Line voltage is too high.Line voltage is low.Load larger than line capacity isconnected to line (ex: welding machine,motor with high starting currentconnected to the commercial line).Faulty magnetic switch at the input sideof the inverter.Motor has overheated.Load is greater than inverter rating.ETH level is set too low.Inverter capacity is incorrectly selected.Inverter has been operated at low speedfor too long.The terminal set to “18 (External fault-A)” or “19 (External fault-B)” in I20-I24 inI/O group is ON.Remedy Increase the Decel time. Use Dynamic Brake Unit. Check whether line voltage exceedsits rating. Check whether line voltage is belowits rating. Check the incoming AC line. Adjustthe line capacity corresponding to theload. Change a magnetic switch. Reduce load weight and operatingduty. Change inverter with highercapacity. Adjust ETH level to an appropriatelevel. Select correct inverter capacity. Install a cooling fan with a separatepower supply. Eliminate the cause of fault at circuitconnected to external fault terminal orcause of external fault input.External faultB contact inputOperatingmethod whenthe frequencycommand islostRemotekeypadcommunicationerrorBrake controlerrorNo frequency command is applied to V1and I.Communication error between inverterkeypad and remote keypadBreak open current is not flow anymore. Check the wiring of V1 and I andfrequency reference level. Check for connection ofcommunication line and connector.Check the Motor Capacity & Wiring12-4