356 Fault tracingFault messagesCode(hex) Fault / Aux. code Cause What to do1080 Backup/RestoretimeoutPanel or PC tool has failed tocommunicate with the drivewhen backup was being madeor restored.Request backup or restore again.1081 Rating ID fault Drive software has not beenable to read the rating ID of thedrive.Reset the fault to make the drive try toreread the rating ID.If the fault reappears, cycle the power tothe drive. You may have to be repeat this.If the fault persists, contact your localABB representative.2281 Calibration Measured offset of outputphase current measurement ordifference between outputphase U2 and W2 currentmeasurement is too great (thevalues are updated duringcurrent calibration).Try performing the current calibrationagain.If the fault persists, contact your localABB representative.2310 Overcurrent Output current has exceededinternal fault limit.In addition to an actualovercurrent situation, this faultmay also be caused by anearth fault or supply phaseloss.Check motor load.Check acceleration times in parametergroup 23 Speed reference ramp (speedcontrol), 26 Torque reference chain(torque control) or 28 Frequencyreference chain (frequency control). Alsocheck parameters 46.01 Speed scaling,46.02 Frequency scaling and 46.03Torque scaling.Check motor and motor cable (includingphasing and delta/star connection).Check there are no contactors openingand closing in motor cable.Check that the start-up data in parametergroup 99 Motor data corresponds to themotor rating plate.Check that there are no power factorcorrection capacitors or surge absorbersin motor cable.Check for an earth fault in motor or motorcables by measuring the insulationresistances of motor and motor cable.See chapter Electrical installation,section Checking the insulation of theassembly in the hardware manual of thedrive.2330 Earth leakageProgrammable fault: 31.20Earth faultDrive has detected loadunbalance typically due toearth fault in motor or motorcable.Check there are no power factorcorrection capacitors or surge absorbersin motor cable.Check for an earth fault in motor or motorcables by measuring the insulationresistances of motor and motor cable.Try running the motor in scalar controlmode if allowed. (See parameter 99.04Motor control mode.)If no earth fault can be detected, contactyour local ABB representative.
