why GD3000 enters low VLS error status

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why GD3000 enters low VLS error status

738 次查看
Jack_cheng
Contributor II

I'm testing my own BLDC motor on MCSXTE2BK142 daemon board.  With freemaster runs on PC and MCAT tools could run normally. I MCAT tools enters error status after clicked the ON button. The MCAT shows GD3000 error,as following.

zilong911_0-1666614265338.png

I'm not sure what happens.

My BLDC motor has following parameters,

voltage:DC12V

idle current:0.35A

idle speed:4850 RPM

at rated load:

109 mN.m

current:4.5±15%A

speed:3500±15%

pole-pairs :4

I modified PMSM_appconfig.h file according to my BLDC motor as following,

zilong911_1-1666614914027.png

 

But the same errors happens  repeatly as above.

Any suggestion is appreciated.

Thanks very much.

 

 

I checked the dcb_v_pos voltage ,it's 12.1

 

 

 

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674 次查看
JoaquinL
NXP Employee
NXP Employee

Hi Jack,

Low VLS error means the power supply for the gate drives is under voltage. The VLS under voltage threshold is between 7.5 V and 8.5 V. 

Maybe there is something wrong in your HW/SW. Here are some suggestions for you:

  • Check your PWM polarity. Note: the high side is low active and low side is high active.

JoaquinL_0-1667554095809.png

 

  • Increase the deadtime of PWM
  • Check you motor control SW/HW

BR, Joaquin

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petervlna
NXP TechSupport
NXP TechSupport

Hello,
I've talked to application team, once they have time they will have a look at your issue.

Best regards,

Peter

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