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vedder.se forums • Current issues DRV8302 fault
Page 1 of 1

Current issues DRV8302 fault

Posted: 24 Jan 2018, 01:15
by yhao1
Hello,

I recently have a very big issue about current. I self made a vesc and test it on the vesc-tool. I used the firmware 3.29, hardware 4.12. The testing software is vesc-tool version 0.82 not bldc-tool. I just connected the motor and press the real time data button.

When I pressed the bldc detect parameter button, the first thing I saw is the red led flashes again and again. Then the motor made a cute jig sound and moves very little little step and then stopped. Then the DRV8302 gives a FAULT_CODE_DRV on the vesc tool。

The motor did not even run at all. Here is the plot I got:


11111.JPG
11111.JPG (556.51 KiB) Viewed 2045 times


Can you give me some suggestions and help me figure out the issues?

Thank you very much

Michael

Re: Current issues DRV8302 fault

Posted: 24 Jan 2018, 08:35
by ThierryGTLTS
Have a look here and use the help :?: in VESC Tool that give good advices.

Have a Nice Day.

Thierry

Re: Current issues DRV8302 fault

Posted: 24 Jan 2018, 16:03
by arvidb
Are you sure, really sure, that you have the right firmware?

T FET -22 °C looks strange to me, and so does the current and duty cycles, alternating periodically between -1.5 A and +1.5 A while the input current stays exactly at zero.

I'm not sure, but this does not look right to me.