The motor has a thermocouple inside the wiring box if I recall. Check the wiring. Mine came loose one time.
Yaskawa 626VM3C
I am getting a F-900 error on the spindle drive. Book says it is a Motor Thermal Error 1. Motor temperature exceeded upper limit.
The machine has been idle for a few days so I know the motor is not over temperature.
Any suggestions on which direction to head this time?
Thanks
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The motor has a thermocouple inside the wiring box if I recall. Check the wiring. Mine came loose one time.
When I put the ohmmeter on the thermocouple it shows open.
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I believe it should show some resistance. I did some digging and found an old post that suggests it can be replaced with a 100 ohm resistor. YMMV.
https://www.factorydaily.com/topics/...2-bridgeport-0
I have a spare motor so I'll check it tomorrow evening and see what it reads.
I found that same post and tried it. It did not remedy the situation. I also work tried it without the resistor still did not work.
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I can not enable the axis drives. As soon as I press 7 on the keyboard I get an Axis Drive fault.
I did check continuity through the cable from the drive to the motor and that was good.
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Last edited by cooperjm; 09-12-2018 at 12:06 AM.
I measured the thermister on pins 11 & 12 (THSA & THSB) on my spare spindle motor, it reads 9.72k ohm. I'd try a 10k ohm resistor and see it it clears the error.
I tried a 100 and 1K resistor with out any change. Right now the Yaskawa drive is out for repair.
Another thing I noticed is that there is only 0.12 volts between pins 11 and 12 coming from the drive.
I will update this post when I get it back and running.
Thank you for checking the restiance.
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