Revision June 2010 10-1Chapter 10 TroubleshootingIf a fault is detected on the servo drive or motor a corresponding fault code will be shown onthe drive's LED display. Fault codes can also be transmitted via communication, see P0-01 andP4-00 ~ P4-04 for display on controller or HMI.10.1 Fault Messages TableServo Drive Fault MessagesFault MessagesDisplay Fault Name Fault DescriptionOvercurrent Main circuit current is higher than 1.5 multiple ofmotor’s instantaneous maximum current value.Overvoltage Main circuit voltage has exceeded its maximumallowable value.Undervoltage Main circuit voltage is below its minimum specifiedvalue.Motor error The motor does not match the drive. They are notcorrectly matched for size (power rating).Regeneration error Regeneration control operation is in error.Overload Servo motor and drive is overload.Overspeed Motor’s control speed exceeds the limit of normalspeed.Abnormal pulsecontrol commandInput frequency of pulse command exceeds the limit ofits allowable setting value.Excessive deviation Position control deviation value exceeds the limit of itsallowable setting value.Reserve ReserveEncoder error Pulse signal is in error.Adjustment error Adjusted value exceeds the limit of its allowable settingvalue when perform electrical adjustment.Emergency stopactivated Emergency stop switch is activated.Reverse limit switcherror Reverse limit switch is activated.Forward limit switcherror Forward limit switch is activated.
