8. Troubleshooting
8.3 About Alarms
8-19 ME0342-4B
Alarm Name Alarm Name
Cause : It indicates 2s has passed without making a move since a
move command was received.
1) Connection error or wire breakage of motor/encoder
cables.
2) Brake is not released (when equipped with a brake).
3) Load to the motor is high due to external force.
4) The resistance in the actuator sliding operation is large.
Countermeasure : 1) Check for the motor/encoder cable wiring
condition.
2) Supply 24V DC 150mA to the BKRLS terminal
on the power supply connector and if you can
see an improvement, it is considered the
controller failure.
3) Confirm that there is no error in the mechanical
part assembly condition.
4) If the loaded weight is within the allowable
range, turn the power OFF and check the
resistance in sliding operation by moving the
0CE Drop in control supply
voltage
Cause : The control power voltage dropped less than the voltage drop
threshold 16.8V (70% of 24V DC).
1) The voltage of 24V DC power supply is low.
2) A faulty part inside the controller.
Countermeasure : 1) Check if 24V DC +/-10% voltage is applied to
the controller power supply input part (between
24V and 0V of the power supply connector). If
the voltage is low, the 24V DC power supply
may have failed. The current amperage
necessary for the actuator operation is not
secured. Check the necessary current
amperage in the instruction manual, and replace
the 24V DC power source.
2) Replace the controller.
Cause : Error detected on heatsink fan inside the controller.
Countermeasure :
It can be considered the end of fan life. Replace the
fan. Refer to [7.4.2 How to Replace Fan Unit]
Cause : This alarm indicates that the position deviation counter has
overflowed.
1) The speed dropped or the actuator stopped due to the
effect of external force or overload.
2) The excited-phase detection operation following the power-
on is unstable.
Countermeasure : 1) This error occurs when the actuator cannot be
operated as it is commanded. Check the load
conditions such as if the work is touching to the
surrounding object, or brake is properly
released, and remove the cause.
2) Overload can be concerned. Revise the
transportable weight and redo the home-return
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