Fault Possible cause Possible solutionServo drive doesnot run or onlystarts up slowly orwith difficulty.• Bearing wear.• Incorrectparametersettings.• Incorrect controlloop parameters.• Incorrect torquesettings.• Check thebearings andshaft.• Check theparametersettings.Drive hums anddraws highcurrent.Drive defective. Contact Danfoss.Drive stopssuddenly anddoes not restart.• No drivecommunication.• Servo drive inerror mode.Check the fieldbusconnection and thestatus indicators(LEDs) on the servodrive.Wrong motorrotation direction.Parameter error. • Check theparametersettings.• Change therotation directionif appropriate.Drive runsnormally, butdoes not generatethe expectedtorque.• Drive defective.• Parameter error.• Check theparametersettings.• Contact Danfoss.Drive screaming. • Incorrectcalibration.• Faulty currentmeasurement.• Incorrect controlloop parameters.• Check theparametersettings.• Contact Danfoss.Uneven running. Defective bearing. Check the shaft.Vibration. • Defective bearing.• Incorrect controlloop parameters.• Check the shaft.• Check theparametersettings.(Unusual) runningnoises• Defective bearing.• Defects onconnectedmechanics.• Incorrect controlloop parameters.• Check the shaft.• Check for loosemechanicalcomponents onthe attachedmechanics.• Check theparametersettings.Fault Possible cause Possible solutionSystem fuseblows, circuitbreaker trips, ordrive protectiontrips immediately.• Short circuit.• Incorrect controlloop parameters.• Check the wiring.• Contact Danfoss.Drive speed dropssharply underload.• Drive is running atcurrent limit.• Drive is runningwith incorrectparameters.• Check theapplication.• Check theparametersettings.Brake does notrelease.Brake controldefective.Contact Danfoss.Holding brakedoes not hold theservo drive.• Mechanical brakedefective.• Shaft load exceedsthe holdingtorque of thebrake.Contact Danfoss.Brakeengagementdelayed.Software error. Contact Danfoss.Noises whenpower-off brakeengaged.Mechanical brakedamaged.Contact Danfoss.LEDs do not lightup.No power supply. Check the powersupply.Error 0xFF91occurs.Increments betweensucceeding values toobig.Check for velocity orguide value plausi-bility distance.Table 9.1 Troubleshooting Servo Drive9.2.2 Error CodesCode Name Severity(Warning/Error/Triplock)Description LCP name0x0000 No error Error No error. –0x1000 GenericapplicationerrorError Genericapplicationerror.generic err0x2310 Overcurrenton outputError Overcurrenton output.overcurr out0x239B Overload onoutput (I2T)Warning,errorI2t thermalstate.overload0x3210 DC linkovervoltageError Overvoltageon DC-linkvoltageUDCovervolt0x3220 DC linkundervoltageError Undervoltage on DC-linkvoltage.UDCundervoltDiagnostics VLT® Integrated Servo Drive ISD® 510 System368 Danfoss A/S © 01/2017 All rights reserved. MG36D10299
