LNS GT 112-E, Instruction Manual

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Chapter 9 TROUBLE SHOOTING GUIDE
9 - 19
GT 112-E
Display Fault Name Fault Description
AL022 Input power phase loss One phase of the input power is loss.
AL023 Pre-overload warning
To warn that the servo motor and drive is going to overload.
This alarm will display before ALM06. When the servo
motor reach the setting value of P1-56, the motor will send
a warning to the drive. After the drive has detected the
warning, the DO signal OLW will be activated and this fault
message will display.
AL024 Encoder initial
magnetic field error
The magnetic field of the encoder U, V, W signal is in error.
AL025 Encoder internal
error
The internal memory of the encoder is in error. An internal
counter error is detected.
AL026 Encoder data error An encoder data error is detected for three times.
AL027 Motor internal error The setting value of the encoder is in error.
AL028 Motor internal error The encoder U, V, W signals are in error.
AL029 Motor internal error The internal address of the encoder is in error.
AL030 Motor protection
error
In order to protect the motor, this alarm will be activated
when the setting value of P1-57 is reached after a period of
time set by P1-58.
AL031 U,V,W, GND wiring
error
The wiring connections of U, V, W (for servo motor output)
and GND (for grounding) are in error.
AL035 Motor temperature
error
Motor is working under temperature over 105°C
(221°F).
AL048 Excessive encoder
output error
The encoder output errors or output pulses exceed
hardware tolerance.
AL067 Motor temperature
warning
The temperature of motor is over 85°C (185°F).
AL099 DSP firmware
upgrade
EE-PROM is not reset after the firmware version is
upgraded.
This fault can be cleared after setting P2-08 to 30 first, and
then setting P2-08 to 28 next and restarting the servo drive.