Torq Cut 22 Spindle Drive F-900

[cooperjm]

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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[forhire]

The motor has a thermocouple inside the wiring box if I recall. Check the wiring. Mine came loose one time.

[cooperjm]

When I put the ohmmeter on the thermocouple it shows open.

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[forhire]

When I put the ohmmeter on the thermocouple it shows open.

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.

[cooperjm]

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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[forhire]

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.

I should get home tomorrow early enough to check my spare spindle motor. I assume you checked continuity from the drive the motor?

Does the motor start and then stop or simply display the error?

[cooperjm]

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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[forhire]

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.

[cooperjm]

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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