OKUMA LC20 MAIN MOTOR OVER HEAT

[jesusg]

I HAVE A MACHINE OKUMA LC20 WITH OKUMA OSP 3000. THE MACHINE HAVE A ALARM 1680. MAIN MOTOR OVER HEAT. ANYONE CAN HELP ME?

REGARDS

JESUS GUILLEN

[Algirdas]

did you checked the thermo sensor itself? maybe some broken line just because of age of the wires and connectors. The signal relay is next suspect.
you can shorten the thermo sensor (or relay output) for diagnostic reasons and for temporary super urgent work

[jesusg]

l check the brushes and thermal sensors and found no problems. The main motor is a dc motor Yaskawa.

thanks

[neilw20]

Motor has an electric fan. Is it working?

[jesusg]

the alarm appears just turn on the machine, so the main motor does not start and therefore is not heated.

[jolulank]

Open the back cabinet and tell me what kind of spindle drive you do have. Then turn the main switch on and look at the display on the spindle drive, take a note of the leds that turn on and the number on the display, then turn the control on, AGAIN, take note of the leds and the display.

Let me know the results

the alarm appears just turn on the machine, so the main motor does not start and therefore is not heated.

[jesusg]

I'm out of town and l will come back next week. On my return I do the tests and I mention the results. Thanks.

Regards