YASKAWA SGD7S-*A20**F62 Series Product Manual

Contents

5.3 Troubleshooting Alarms5 Maintenance5-23A.8A1:External EncoderModule ErrorA failure occurred inthe external encoder. – Replace the externalencoder. –A failure occurred inthe Serial ConverterUnit.– Replace the Serial Con-verter Unit. –A.8A2:External Incre-mental EncoderSensor ErrorA failure occurred inthe external encoder. – Replace the externalencoder. –A.8A3:External Abso-lute EncoderPosition ErrorA failure occurred inthe external absoluteencoder.–The external absoluteencoder may be faulty.Refer to the encodermanufacturer’s instruc-tion manual for correc-tions.–A.8A5:External EncoderOverspeedAn overspeed errorwas detected in theexternal encoder.Check the maximumspeed of the externalencoder.Keep the externalencoder below its maxi-mum speed.–A.8A6:External EncoderOverheatedAn overheating errorwas detected in theexternal encoder.– Replace the externalencoder. –A.b33:Current Detec-tion Error 3A failure occurred inthe current detectioncircuit.–Turn the power supply tothe SERVOPACK OFF andON again. If an alarm stilloccurs, the SERVOPACKmay be faulty. Replace theSERVOPACK.–A.b6A:MECHATROLINKCommunicationsASIC Error 1There is a fault in theSERVOPACKMECHATROLINKcommunications sec-tion.–Turn the power supply tothe SERVOPACK OFF andON again. If an alarm stilloccurs, the SERVOPACKmay be faulty. Replace theSERVOPACK.–A.b6b:MECHATROLINKCommunicationsASIC Error 2A malfunctionoccurred in theMECHATROLINKcommunications sec-tion due to noise.–Implement the followingcountermeasures againstnoise.• Check the MECHA-TROLINK Communica-tions Cable and FGwiring.• Attach a ferrite core tothe MECHATROLINKCommunications Cable.–There is a fault in theSERVOPACKMECHATROLINKcommunications sec-tion.–Turn the power supply tothe SERVOPACK OFF andON again. If an alarm stilloccurs, the SERVOPACKmay be faulty. Replace theSERVOPACK.–A.bF0:System Alarm 0A failure occurred inthe SERVOPACK. –Turn the power supply tothe SERVOPACK OFF andON again. If an alarm stilloccurs, the SERVOPACKmay be faulty. Replace theSERVOPACK.–A.bF1:System Alarm 1A failure occurred inthe SERVOPACK. –Turn the power supply tothe SERVOPACK OFF andON again. If an alarm stilloccurs, the SERVOPACKmay be faulty. Replace theSERVOPACK.–Continued on next page.Continued from previous page.Alarm Number:Alarm Name Possible Cause Confirmation Correction Refer-ence