LNS GT 112-E, Instruction Manual

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Chapter 9 TROUBLE SHOOTING GUIDE
GT 112-E
AL006 Overload
Clearing Method Turn OFF the power supply and restart the servo drive.
Potential Cause Checking Method Corrective Actions
The drive has
exceeded its
rated load during
continuous
operation.
Check if the drive is overloaded. Increase motor capacity or
reduce load.
Control system
parameter setting
is incorrect. Check if there is mechanical vibration Adjust gain value of control
circuit.
Accel/Decel time setting is too fast.
Decrease Accel/Decel time
setting.
The wiring of drive
and encoder is in
error.
Check the wiring of U, V, W and
encoder. Ensure all wiring is correct.
AL007 Overspeed
Clearing Method Turn OFF the power supply and restart the servo drive.
Potential Cause Checking Method Corrective Actions
Speed input
command is not
stable (too much
fluctuation). Use signal detector to detect if input
signal is abnormal.
Ensure that input command
frequency is stable (not fluctuate
too much) and activate filter
function (P1-06, P1-07 and
P1-08).
Over-speed
parameter setting
is defective.
Check if over-speed parameter
setting value is too low. Correctly set over-speed
parameter setting (P2-34).
AL008 Abnormal pulse control command
Clearing Method Turn OFF the power supply and restart the servo drive.
Potential Cause Checking Method Corrective Actions
Pulse command
frequency is
higher than rated
input frequency.
Use pulse frequency detector to
measure input frequency. Correctly set the input pulse
frequency.