Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

10.1 TroubleshootingTable 10.6 Alarm Display and Troubleshooting (Cont’d)AlarmDisplayAlarm NameSituation at AlarmOccurrenceCauseCorrective ActionsA.73 Dynamic BrakeOverloadOccurred when thecontrol power supplywas turned ON.A SERVOPACK board fault occurred.Replace the SERVOPACK.Occurred when theservomotor wasrunning and in a statusother than servoOFF.A SERVOPACK board fault occurred.Replace the SERVOPACK.Occurred when theservomotor wasrunning in servoOFF status.The rotating energy at a DB stop exceeds the DBresistance capacity.Reduce the motor speed,Reduce the load moment of inertia, orReduce the number of times of the DB stopoperation.A SERVOPACK fault occurred.Replace the SERVOPACK.A.74 Overload ofSurge CurrentLimit Resistor(Detected whenthe number oftimes that themain circuit’spower is turnedON or OFF morethan 10 times/2seconds.)Occurred when thecontrol power supplywas turned ON.Occurred duringoperations otherthan the turningON/OFF of themain circuit.Occurred at themain circuit powersupply ON/OFFoperation.A SERVOPACK board fault occurred.A SERVOPACK board fault occurred.The surge current limit resistor operation frequencyat the main circuit power supply ON/OF operationexceeds the allowable range.A SERVOPACK fault occurred.Replace the SERVOPACK.Replace the SERVOPACK.Reduce the number of times that main circuit’spower supply can be turned ON/OFF to 5 times/min. or less.Replace the SERVOPACK.A.7AHeat SinkOverheated(Detected whenthe heat sinktemperatureexceeds 100 ×°C.)Occurred when thecontrol power supplywas turned ON.Occurred when themain circuit powersupply was turnedON or while the servomotorwas running.A SERVOPACK fault occurred.The overload alarm has been reset by turning OFFthe power too many times.The load exceeds the rated load.The SERVOPACK ambient temperature exceeds55°C.A SERVOPACK fault occurred.Replace the SERVOPACK.Change the method to reset the alarm.Reconsider the load and operation conditions, orreconsider the servomotor capacity.The ambient temperature must be 55°C or less.Replace the SERVOPACK.A.81 EncoderBackup Error(Detected on theencoder side.)(Only when anabsolute encoderis connected.)Occurred when thecontrol power supplywas turned ON.(Setting:Pn002.2=1)Occurred when thecontrol power supplywas turned ONusing an absoluteencoder. (Setting:Pn002.2=0)A SERVOPACK board fault occurred when an absoluteencoder is used with the setting for incrementalencoder.Alarm occurred when the power to the absoluteencoder was initially turned ON.The encoder cable had been disconnected once.The power from both the PG power supply (+5 V)and the battery power supply from the SERVO-PACK is not being supplied.Replace the SERVOPACK.Set up the encoder.First confirm the connection and set up theencoder.Replace the battery or take similar measures tosupply power to the encoder, and set up theencoder.An absolute encoder fault occurred.If the alarm cannot be reset by setting up theencoder again, replace the encoder.A.82 EncoderChecksumError(Detected on theencoder side.)Occurred when thecontrol power supplywas turned ONor during an operation.Occurred when theSEN signal turnedON.A SERVOPACK fault occurred.A fault occurred in the encoder and was detected byencoder self-diagnosis.A SERVOPACK fault occurred.A fault occurred in the encoder and was detected byencoder self-diagnosis.Replace the SERVOPACK.Set up the encoder. If this alarm occurs frequently,replace the servomotor.Replace the SERVOPACK.Set up the encoder. If this alarm occurs frequently,replace the servomotor.1010-11