User Manual High Performance AC Drive

4-4 TroubleshootingHIM IndicationThe HIM also provides visual notification of a fault.ConditionDrive is indicating a fault.The LCD HIM immediately reports the fault condition bydisplaying the following:• “Faulted” appears in the status line• Fault number• Fault name• Time that has passed since the fault occurredPress Esc to regain control of the HIMDisplayF-> Faulted0.0 HzAuto— Fault — F24Main DC Menu: Bus OvervoltDiagnosticsTime since FaultParameter 00:23:52Manually Clearing FaultsThis section will contain a table that illustrates the HIM keystrokesnecessary to clear faults.Step1. Press Esc to acknowledge the fault. The fault information willbe removed so that you can use the HIM.2. Address the condition that caused the fault.The cause must be corrected before the fault can be cleared.3. After corrective action has been taken, clear the fault by one ofthese methods.• Press Stop• Cycle drive power• Select “Clear Faults” from Diagnostic - Faults menuKey(s)EscFault DescriptionsTable 4.D Fault Descriptions and Configuration ParametersNo. Name Type (1) Description Action1 Abs Ovespd Det ➁ Motor speed has exceeded the limits set by Pars 75 [RevSpeed Limit], 76 [Fwd Speed Limit] and Par 335 [Abs OverSpd• Check to see if the encoder feedbackpolarity is correct.Lim]• Check to see if the drive is in torque mode,selected in Par 110 [Speed/TorqueMode]value 2 “Torque Ref”. If the drive is intorque mode, verify that there is a loadpresent.• Verify min/max settings in Par 75 [RevSpeed Lim] and Par 76 [Fwd Speed Lim].Check to see if the load is overhauling. If itis overhauling, turn the bus regulator offusing Par 414 [Brake/Bus Cnfg] bit 2[BusRef High].2 Vref Decel Fail ➁ The value of Par 301 [Motor Spd Ref] has failed to decreaseduring a ramp to zero speed stop. This could possibly be due toa speed trim from Pars 21 [Speed Trim 1], 22 [Speed Trim 2] or23 [Speed Trim 3].3 Encoder 0 Loss ➀ One of the following has occurred on encoder 0:• Reconnect encoder or replace encoder.missing encoder (broken wire)quadrature errorphase loss4 Encoder 1 Loss ➀ One of the following has occurred on encoder 1:missing encoder (broken wire)quadrature errorphase loss• Reconnect encoder or replace encoder.