DRV8353RS-EVM: LaunchXL- F280025C : voltage offset issue.

Thank you sir , this is really problem solving.

Please let you know me , cause of overcurrent fault also . I try to go deep  into the firmware and find the following to understand the main cause of OC fault.

calcMotorOverCurrentThreshold();

Regards,

arjun

Hello sir,

Actually I able to run the motor unto DMC level 3, But When I try to enter into DMC level 4 (Hall Enable and disable FAST algorithm) , Voltage offset tends to 0,0,0  and motor stop spinning but vibrating and In Open loop voltage offset shows 0.5,0.5,0.5.

Can you please help me what is the reason behind that??

(Yes, I have recheck the on board switch for Hall sensor interface)

Hi Sir,

I am really badly sucked in the voltage offset fault issues,

Whenever I try to connect the HUB motor I got this fault While , with the small motor we get the expected result. I attached the video below of DRV83 Board please see there is n-Fault led goes high for movement  when I just run the code and get back to low.

I have also verify the  following below and Try to change and match with my power supply voltage 
{Ex:- Input dc voltage is 25 volt so I write there 25)

#define USER_M1_NOMINAL_DC_BUS_VOLTAGE_V    (48.0f)  

Measured by multimeter,

ISENA = 1.6 volt    VSENA  = 0.38 volt

ISENA = 1.6 volt    VSENB  = 0.38 volt

ISENA = 1.6 volt    VSENC  = 0.38 volt

VSENVM = 3.3 volt

Noted the following,

On Board DRV U3(12 volt to 3V3 convert) getting much hot and when I disconnect the Launch pad from it , feel normal.

Hello,

Previously, you stated that in open-loop, the offset values looked OK, but in closed-loop, that was no longer the case. Is that still true?

Regards,
Jason Osborn

Hello Sir, 

No that is not case, offset are correct up to DMC level -4,

I have two motor (Please keep this also in note, I am 30V/30A power supply only )

small motor --> 24V/3A 

Hub Motor --->

when I try to spin the small motor, that gives me satisfied output over the all DMC Level but as I try to spin the Hub motor after setting its v/f profile , its run up to certain level under the some condition , as I was getting OC fault again and again so I found some solution related to the same issue over the e2e and I did that 

after adding above two line , our OC fault issue has been resolved , and Our hub motor able to run up to DMC level -4 , But at level 4(with the hall senor feedback)  as I was trying to increase the ref_speed , that is not impaction on the motor actual speed , its spinning at constant speed.

Then I go back to DMC Level -3 , try to tune some more motor parameter, same result was there, 

In the end , I thought below added line may causing some problem , so I comment it and then I try to spin the motor again , its run for moment then voltage offset fault is triggered. (after that I couldn't able to spin hub as well as small motor in any DMC level anyhow)

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Can I know this , is my hub motor really suitable for DRV8353 board because I found below 

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1289791/drv8353r-pmsm-controller-for-the-3kw/4935722?tisearch=e2e-sitesearch&keymatch=DRV8353RS%2520HUB%2520MOTOR#4935722

Recommend motor for DRV8353R  is for  <=100W applications, and my motor is 1000watt, or is the power supply issues??

Thank and Regards

arjun

Hi Arjun, 

Many of our team members are currently out of office for US holiday timeframe - but will be back in office by 1st week of January.

Please anticipate a delayed response & feel free to provide additional information in the meantime.
Best Regards,
Andrew