LAUNCHXL-F280025C: HALL FOC with DRV8353EVM - Overcurrent Fault

Jasraj Dalvi

Part Number: LAUNCHXL-F280025C
Other Parts Discussed in Thread: DRV8353, LVBLDCMTR

Team,

I am working with F280025C launchpad and DRV8353 EVM as given in the user guide with TI provided motor and trying for Hall sensored FOC.

At all the build levels, I am observing that Overcurrent fault bit sets up. I have tried changing the settings for setting higher current limits as well but with no success. I do get one jerk after setting (flagEnableRunAndIdentify) flag to 1 on motor shaft (probably Align state) before fault kicks in and it turns off.

I tried it with FAST - it works smoothly (That also takes away my doubts over hardware setup). Also - all the hall signals are available as expected on J13 and S5-Q2 is set at J13 side.

Any suggestions to avoid this Module overcurrent ? its been a showstopper right now.

-Jasraj

11 months ago

0 Kevin Allen18 11 months ago

TI__Mastermind 38275 points

Hi Jasraj,

You are evaluating with the Motor Control SDK Universal Project, correct?

Can you verify that JP1 & JP3 are populated to provide 5V to the F28002x side of the LaunchPad? This is needed to provide power to the 5V --> 3.3V translator along the HALL sensor signal path.
Verify motor phase and HALL sensor wire connections are made properly per Table 2-2. Motor phase sequence is important for sensored MC.

Best,

Kevin

0 Jasraj Dalvi 11 months ago in reply to Kevin Allen18

Prodigy 20 points

Kevin, Yes its MC SDK Universal motor control project.

JP1 and JP3 are connected - in fact, I have traced all the hall signals till MCU pins and available there.
Below connections are done in the given order.

Jasraj

0 Kevin Allen18 11 months ago in reply to Jasraj Dalvi

TI__Mastermind 38275 points

Hi Jasraj,

OK, the HW connections should be correct then.

What motor parameters are you using in 'user_mtr1.h' file? The LVBLDCMTR should correspond to one of the two defines below I believe:

#define USER_MOTOR1 Anaheim_BLY172S_24V

#define USER_MOTOR1 Anaheim_BLY341S_Y24V

Best,

Kevin

0 Jasraj Dalvi 11 months ago in reply to Kevin Allen18

Prodigy 20 points

#define USER_MOTOR1 Anaheim_BLY172S_24V

Jasraj

0 Kevin Allen18 11 months ago in reply to Jasraj Dalvi

TI__Mastermind 38275 points

Hi Jasraj,

I will test with the same hardware + motor on my side. I'll let you know once I've finished testing and have any findings to share.

Best,

Kevin

0 Kevin Allen18 11 months ago in reply to Kevin Allen18

TI__Mastermind 38275 points

Discussion taken offline. Seems it may be a HW issue with the specific F28002x LaunchPad as F28003x LP is working properly.

Best,

Kevin

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LAUNCHXL-F280025C: HALL FOC with DRV8353EVM - Overcurrent Fault