Okuma Alarm-C 3734 ATC step time over
A step of operation took more than 120 seconds during the execution of an ATC sequence.
XXXXXXXX:The limit switch status for each component of the ATC upon the occurrence of alarm
Probable Faulty Locations
Failure of a limit or proximity switch for ATC sequence check, a cut wire in the input signal circuit, failure of a hydraulic or air solenoid switch for ATC operation, a cut wire in the solenoid operation signal circuit, or faulty hydraulic or air circuit. The faulty ATC sequence limit switch is indicated on the ‘ATC CONDITION’ screen in AUTO, MDI, and MANUAL OPERATION mode when this alarm occurs due to machine interference.
Find the faulty switch and take corrective action.