45
Code Alarm Name Cause/Treatment
0B8
Excitement Detection
Error
For this controller, when the servo-motor is turned ON for the fi rst time after the power is input, the magnetic
pole phase detection (pole sensing) is performed. However, the specifi ed encoder signal level is not detected
after the excitement for the specifi ed time period.
Cause : (1) A looseness in the connection section of the actuator connecting cable or wire breakage is
considered.
(2) In the case of the unit with the brake, the brake is not released.
(3) The motor load might be too large due to the external force.
(4) The power is input while the actuator hits the mechanical end.
(5) The sliding resistance in the actuator itself might be too large.
Treatment : (1) and (2) Check for the motor connecting cable wiring condition.
(3) Confi rm that there is no error in the mechanical part assembly condition.
(4) Move the actuator away from the mechanical end and re-input the power.
(5) In the case that the load weight is normal, move the actuator by hand to check the sliding
resistance after the power is turned OFF. In the case that there is any error in the actuator
itself, contact our company.
0BA
Home Position Sensor
Indetectable
For the actuator for which the home return sensor is used, the home return operation has not been completed
normally.
Cause : (1) The work interferes with the surrounding object in the course of the actuator’s home return
operation.
(2) The actuator’s sliding resistance might be partly too high.
(3) The home return check sensor installation error, breakdown or wire breakage is supposed.
Treatment : In the case that the work does not interfere with anything, the cause (2) or (3) is supposed. In
such case, contact our company.
0BE Home Return Time Out
Cause : Even when the specifi ed time period has passed after the home return operation start, the
home return operation is not completed (It never occurs in the normal operation).
Treatment : It is considered that the combination of the controller and actuator is not correct. Contact our
company.
0C0 Actual Speed Excessive
Cause : The motor speed exceeds the maximum motor speed set using the maker’s set parameters.
(1) The actuator’s sliding resistance might be partly too high.
(2) The load is increased too much due to the momentary external force.
It might be caused when the load is lightened before detecting the servo-motor error due to the
above causes (1) and (2), and the actuator is moved suddenly.
Treatment : Check that there is no error in the mechanical part assembly condition.
In the case that there is any error in the actuator itself, contact our company.
0C1 Servo-Motor Error
The motor operation is not available for 2 seconds or more after the movement command is received and
before the actuator reaches the target position.
Cause : (1) A looseness in the connection section of the actuator connecting cable or wire breakage is
considered.
(2) In the case of the unit with the brake, the brake is not released.
(3) The motor load might be too large due to the external force.
(4) The sliding resistance in the actuator itself might be too large.
Treatment : (1) and (2) Check for the actuator connecting cable wiring condition.
(3) Confi rm that there is no error in the mechanical part assembly condition.
(4) In the case that the load weight is normal, move the actuator by hand to check the sliding
resistance after the power is turned OFF. In the case that there is any error in the actuator itself,
contact our company.
0C8 Overcurrent
Cause : The output current in the power circuit section is increased abnormally. The motor coil insulation
degradation might be considered.
Treatment : Measure the resistance between the motor connecting cable U, V and W and insulation
resistance with earth cable and confi rm whether or not there is insulation degradation.
When the measurement is performed, consult with our company.
0C9 Overvoltage
An over-voltage is caused in the 24V input power (24V + 20%: 28.8V or more).
Cause : (1) A looseness in the connection section of the actuator connecting cable or wire breakage is
considered.
Cause : (1) The source voltage in the 24V power unit is too high.
(2) A breakdown of the part inside the controller is considered.
Treatment : Check for the input source voltage.
In the case that the voltage is normal, contact our company.
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