LNS GT 326-E, Instruction Manual, Page: 131 / 218

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9 TROUBLESHOOTING GUIDE
GT 326-E
9.4 SERVO AMPLIFIER ERROR MESSAGES
If a fault is detected on the servo drive or motor a corresponding fault code will be shown on the
drive's LED display.
9.4.1 Fault Messages Table
Display Fault Name Fault Description
AL001 Overcurrent Main circuit current is higher than
1.5 multiple of motor’s
instantaneous maximum current value.
AL002 Overvoltage Main circuit voltage has exceeded its maximum allowable
value.
AL003 Undervoltage Main circuit voltage is below its minimum specified value.
AL004 Motor error The motor does not match the drive. They are not correctly
matched for size (power rating).
AL005 Regeneration error Regeneration control operation is in error.
AL006 Overload Servo motor and drive is overload.
AL007 Overspeed
Motor’s control speed exceeds the limit of normal speed.
AL008 Abnormal pulse control
command
Input frequency of pulse command exceeds the limit of its
allowable setting value.
AL009 Excessive deviation Position control deviation value exceeds the limit of its
allowable setting value.
AL010 Reserve Reserve
AL011 Encoder error Pulse signal is in error.
AL012 Adjustment error Adjusted value exceeds the limit of its allowable setting
value when perform electrical adjustment.
AL013 Emergency stop
activated
Emergency stop switch is activated.
AL014 Reverse limit switch
error
Reverse limit switch is activated.
AL015 Forward limit switch
error
Forward limit switch is activated.
AL016 IGBT temperature error The temperature of IGBT is over high.
AL017 Memory error EE-PROM write-in and read-out is in error.
AL018 Encoder output error The encoder output exceeds the rated output frequency
.
AL019 Serial communication
error
RS232/485 communication is in error.
AL020 Serial communication
time out
RS232/485 communication time out.
AL021 Reserve Reserve