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

B–62755EN/018.TROUBLESHOOTING8.20ALARM 410(EXCESSIVEPOSITION ERRORAMOUNT DURINGSTOP)Position error amount at stop (DGN 300) exceeds a value set by parameterNo. 1829.Is it verticalaxis?Check parameters 1825 and 1829 if they are correct(see parameter list attached)Correct?NOYESNOCheck servo off signal ofeach axis. The servo offfunction is valid when DGNG126 bits 0–7 is 1.Servo off funciton is used toescape overload of an axiswhen the axis is mechanicallyclamped.Note)YESPerform initial settingof servo parametersSet correctparameters. YES‘1’?NORecovered ?NOYESSet digital servo parametersaccordingto parameter listBe carefull verticalaxis does not drop.Turn off NC powerand remove powerline of motor thenturn on powerNote) Save current CNC parametersin a floppy disk orsuch before performing initialsetting for safety. · Servo amp. is faulty.· Signal line disconnection between servo amp.and main CPU or between servo amp. andoption 2 board.· Main CPU board or option 2 board isfaulty.Measure motor powerat terminal board T19–10–11 of the servoamplifierPower supplied?YESMotor power lineis brokenCAUTIONWhen the main board is replaced, all the data stored inmemory is lost. Set NC data again, referring to chapter 3“data input/output” .349