Greetings,
We have a '93-vintage Kitamura Mycenter 0 w/Yasnac MX3 control that is giving us problems with the ATC.
The ATC is controlled by a cam-box driven by a Mitsubishi Freqrol drive. Several times a day we are getting
the MACHINE ALARM 14: ATC LIMIT SW. ALARM following a toolchange command.
The symptom is that the ATC arm is overshooting at the end of the cycle, such that it actually moves away from
its HOME position even though the Cam Motor Revolution command is OFF. When that happens, the Arm Zero
Position signal is then OFF too. (PS9 / #1008.1= 0) generating the alarm.
The cam motor has a electromagnetic brake mounted on it and I'm thinking that perhaps the brake is not working
properly allowing the cam motor to continue to rotate (slightly) after the cycle is finished.
Can anyone with experience with these machines chime in an provide their experience / opinion about this?
Please advise.
emexcee380