8. Troubleshooting
8.3 About Alarms
8-25 ME0342-4B
Alarm Name Alarm Name
voltage error
Cause : The control power voltage dropped less than the voltage drop
threshold (120% of 24V DC = 28.8V).
1) The voltage of 24V DC power supply is high.
2) A faulty part inside the controller.
3) The current consumption rises at the moment of the use of
the remote sensing feature for the 24V DC power supply,
thus the voltage drops.
Countermeasure : 1) 2) Check the voltage of the power supply.
3)
Think to use a power supply with enough current
capacity or not to use the remote sensing
0D4 Drive source error
Cause : 1) 24V Motor power input voltage (input 24V DC to MPI
terminal) is excessive.
During acceleration/deceleration, servo-on an so on, the
current consumption rises momentarily, and the remote
sensing function is used with power of barely sufficient
capacity.
2) Connection error on motor encoder cables or short-circuit
in internal wiring
Countermeasure : 1) Check power supply voltage being input to MPI
terminal. Consider using a power supply with
sufficient capacity, or avoid using the remote
sensing function.
2) Check the wiring between the actuator and the
controller.
If this occurs frequently, revise the environment of
use and the operational conditions.
overflow in homing
incomplete status
Cause : The position deviation counter overflowed.
1) Impact of external force, etc. or collision with mechanical
end during JOG operation, or overload during travel
caused the unit to decelerate or stop.
2) The excitation detection operation after power ON is
unstable.
Countermeasure : 1) This occurs when the actuator cannot operate
according to commands. Check the load
condition, such as whether the workpiece is
interfering with surrounding objects, whether the
brake is released, etc., and resolve the cause.
2) There may be an overload, so review the
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