IAI America MSCON - Manual (Page 304)

Chapter 8
Troubleshooting
296
Alarm
Code
Alarm
Level
Alarm Name Cause/Treatment
0C0 Actual speed excessive Cause : This indicates the number of motor rotation
exceeded the number of allowable rotation.
1) The slide resistance of the actuator is locally
high.
2) The load is increased too much due to a external
force.
With the reasons above, it can be considered a
sudden speed increase has occurred before
detecting the servo error.
Treatment : Even though this would not occur in normal
operation, check if there is any abnormality in the
parts assembly condition. Also check if there is a
possibility that an external force may be applied in
the direction of the actuator movement.
0C2
Operation
release
Overrun sensor
detected
Cause : This indicates that a signal from the OT sensor
(option) installed at the mechanical end is detected.
1) The actuator was moved by hand or by external
force being applied while the servo was OFF
(normal detection).
2) The actuator was jogged or operated by
pulse-train in a condition where the home
coordinates were not yet established and thus
the soft stroke limit did not function correctly
(normal detection).
3) The home position achieved is not correct, or in
the case of an absolute type controller the
coordinates have shifted due to an inappropriate
absolute reset position.
4) There is a mismatch between the sensor
characteristics and the setting in Parameter
No.19 “Overrun sensor input polarity”, or the
wiring layout is wrong.
5) There is a mistake in the mating of the controller
and actuator, or the settings in Parameters No.3
and 4 “Soft limit value” and Parameter No.77
“Ball screw limit length” are not appropriate.
Treatment : If 1) or 2) is suspected, move the actuator in the
opposite direction by hand.
If this error occurred inside the effective stroke
range, 3), 4), or 5) is a likely cause.
For 3), conduct a home-return operation to check
the home position. Conduct the absolute reset
again if it is the absolute type. Contact us if the
home position would not come to the proper
position.
If 4) or 5) are suspected, please contact IAI.
0C4
Cold start
Exceeded allowable
time of exceeding torque
allowing continuous
pressing
Cause : The continuous pressing time exceeds the time set
for parameter No.89 “Allowable time of exceeding
torque allowing continuous pressing”.
Treatment : Check the sequence again.
Set the pressing time to be within the setting time.