Andrey wrote: > Hi! All thanks for answers. I can make some explanatories to this problem. > Milling mashine has 3 axes. The motor on axis Y Fails only. > All of axes have identical servoamplifiers and motors. > The motor on axis Y does not vibrate and does not rustle, all 3 axes have > identical PID adjustments. > Ulf, the death of the motor occurs on different executed programs. Amp is > matched to the motor. > Well, it is real hard to say from this distance, but this just doesn't make sense. As all amps have the same tuning, the only possible cause, if there are no defective units, would be that the particular rotational inertia of the Y axis causes resonance that overheats the motor. If there is a tuning program that can be used to monitor the servo drive then you should use that and look for small-scale vibrations that make the servo motor constantly vibrate back and forth. With a high-resolution encoder, these vibrations may be so small that you can't hear or feel them, but they are still making the motor constantly move and draw a lot of current.
But, I suspect more likely there is a defect in the Y axis drive, maybe an intermittent bad transistor driver or current sensor that is leaving current flowing in one winding all the time. Jon ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
