LAUNCHXL-F2800137: Universal Motor control lab 1

Hi Rahul,

Did you connect motor in build level 1? Please disconnect the inverter with motor for build level 1. 

Rahul Khedkar said:

When I change the variable "flagEnableRunAndIdentify" from 0 to 1, nothing happens. Instead, the variable changes value to 0 again.

This variable changed back to 0 as there is a fault indicated by "motorVars_M1.faultMtrUse.all".

Thanks,

Jiaxin

Hello Jaixin, 

Motor is not connected. 

Thanks. 

Hello Jiaxin, 

1. As informed earlier motor is not connected. 

2."motorVars_M1.faultMtrUse.all" had overcurrent issue. After Changing S2 position it is cleared. I enabled flag "motorVars_M1.flagEnableRunAndIdentify" and I can see PWM at 50%. 

3. There are 3 issues (and possibly more) as of now: 

a. systemVars.fastype "member 'fastType' not found at (systemVars).fastType": this error is still present

b. Voltage offset are not near to 0.5V.

c. PWM values are different than indicated in lab manual.

Could you please advise the solution? 

Thanks. 

Hi Rahul,

Rahul Khedkar said:

"motorVars_M1.faultMtrUse.all" had overcurrent issue. After Changing S2 position it is cleared. I enabled flag "motorVars_M1.flagEnableRunAndIdentify" and I can see PWM at 50%. 

Glad that you have cleared the issue.

Rahul Khedkar said:

systemVars.fastype "member 'fastType' not found at (systemVars).fastType": this error is still present

For the issue a, You don't have to worry about this variable. This variable is not available in the F280013x example code.

For the issue b, what is the source of ADC reference voltage?

For the issue c, the manual is just an example with another device. As long as you are getting 50% PWM, the PWM should function properly.

Thanks,

Jiaxin

Hello Jiaxin, 

Thanks for your reply. 

I have not made any other changes to code or kit apart from S4 and S2 configuration. After going through a similar topic here. 

As I see in "hal.c" ADC reference is set to 3.3V internal. However, the bus voltage is being read correctly as 24V. 

    // LAUNCHXL-F2800137 based kits
    ADC_setVREF(obj->adcHandle[0], ADC_REFERENCE_INTERNAL, ADC_REFERENCE_3_3V);
    ADC_setVREF(obj->adcHandle[1], ADC_REFERENCE_INTERNAL, ADC_REFERENCE_3_3V);

I have not mounted 47nF at C9, C10 and C11. Is it related to this issue? 

Thanks again, 

Rahul. 

Hello Jiaxin, 

I mounted capacitors C9, C10, and C11 as 47nF. I see that voltage offsets are showing the correct value now. 

Lab 1 is completed. I have one last question. 

Finally, we have to migrate this project to TMS320F2800132 (F2800132RHBR) 32 pin device which is cheaper an smaller. 

I'm following these video tutorials here. But it starts with having a .sysconfig file, which is absent in the current project. Snapshot attached. 

Could you please advise how we migrate the project to another device? 

Thanks.