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e*clipse · 10-10-2014, 03:28 PM

I looked into the temp sensor for the MGR.

It looks like it's merely a 50kOhm NTC thermistor, electrically isolated from the motor and case.

In that case, it looks like it would be pretty easy to drive it with the 5V controller supply and a 50kOhm 1% resistor in series. The microcontroller's AtoD converter would see about 2.5V at 25C. I would use the "QEI Index" pin and add this to the resolver driver board. That way all the MGR feedback information could run through this adapter.

Thoughts? Suggestions?

- E*clipse

10-10-2014, 03:28 PM	#1187 (permalink)
e*clipse Permanent Apprentice Join Date: Jul 2010 Location: norcal oosae Posts: 523 Thanks: 351 Thanked 314 Times in 215 Posts	I looked into the temp sensor for the MGR. It looks like it's merely a 50kOhm NTC thermistor, electrically isolated from the motor and case. In that case, it looks like it would be pretty easy to drive it with the 5V controller supply and a 50kOhm 1% resistor in series. The microcontroller's AtoD converter would see about 2.5V at 25C. I would use the "QEI Index" pin and add this to the resolver driver board. That way all the MGR feedback information could run through this adapter. Thoughts? Suggestions? - Eclipse Last edited by eclipse; 10-10-2014 at 03:32 PM.. Reason: more info