Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

B–62755EN/019. TROUBLESHOOTING (SERIAL INTERFACE SPINDLE)AL–30Input circuitovercurrentItem Cause of trouble Check procedure Remedy12Defective of powertransistor used forpowerDefective of powerregeneration circuitCheck power transistor.Replace power transistor.Replace PCB.AL–31Speed detectionsignaldisconnectionmotor restraintalarmItem Cause of trouble Check procedure Remedy123Motor constrainedDefective motorspeed feedbacksignalDefective motorspeed feedbacksignal cableCheck that nothing ispreventing the motor fromaccelerating.Check signal waveform.(Alarm No. 2)Check that cable is connectedsecurely to connector.Check that cable is notbroken.Remove cause.Remove cause.Connect cable securely.Replace cable.AL–32Abnormality inRAM internal toLSI for serial datatransferItem Cause of trouble Check procedure Remedy1Defective LSI used inserial data transmissionReplace LSI.Replace PCB.AL–33Insufficient DClink sectionchargingItem Cause of trouble Check procedure Remedy1Defective relay usedin DC link recharging.Disconnectionofresistor used in limitingre-charge currentCheck relevant parts.Replace amp.AL–34Parameter datasetting beyondallowable rangeof valuesItem Cause of trouble Check procedure Remedy1Incorrect parametersettingCheck if specified parametervalue is beyond allowablerange of values.Specify value within allowablerange.AL–34 and F–XXX are alternately displayed in the spindle amplifierindicator section if an AL–34 alarm is raised.“XXX” indicates the data number internal to the spindle for a parameterwhere a value beyond the allowable range is specified.AL–35Excessive gearratio data settingItem Cause of trouble Check procedure Remedy1Parameter data ofgear ratio and positiongain are toolarge.Check gear ratio andposition gain data.Change to suitable values.397