LNS GT 326-E, Instruction Manual, Page: 134 / 218

9 TROUBLESHOOTING GUIDE
9 - 19
GT 326-E
AL003
Under voltage
Clearing Method
This fault message can be removed automatically after the voltage has
returned within its specification.
Potential Cause Checking Method Corrective Actions
The main circuit
voltage is below its
minimum specified
value.
Check whether the wiring of main
circuit input voltage is normal.
Reconfirm voltage wiring.
No input voltage at
main circuit.
Use voltmeter to check whether
input voltage at main circuit is
normal.
Reconfirm power switch.
Input power error
(Incorrect power
input)
Use voltmeter to check whether the
input voltage is within the specified limit.
Use correct power supply or
serial stabilizing power.
AL004 Motor error
Clearing Method
Turn OFF the power supply and restart the servo drive.
Potential Cause Checking Method Corrective Actions
Encoder is damage. Check Encoder for the damage. Repair or replace the motor.
Encoder is loose. Examine the Encoder connector. Install the motor again.
The type of the
servo motor is
incorrect.
Check if the servo drive and servo
motor are not correctly matched for size
power rating.
Replace the motor.
AL005 Regeneration error
Clearing Method Turn OFF the power supply and restart the servo drive.
Potential Cause Checking Method Corrective Actions
Regenerative
resistor is not
connected.
Check the wiring connection
of regenerative resistor.
Reconnect regenerative
resistor.
Regenerative
switch transistor
fault
Check if regenerative switch transistor
is short-circuited.
Please contact your distributor for
assistance or contact with Delta.
Parameter setting
is in error
Confirm the parameter setting and
specifications of regenerative
resistor.
Correctly reset parameter
again.