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BQ28Z610EVM-532: Using the GPCRB tool, but getting an error that Ra table could not be extracted from GG file

Kelvin Nguyen
Prodigy 90 points
Part Number: BQ28Z610EVM-532
Other Parts Discussed in Thread: GPCRB, BQSTUDIO

Tool/software:

Last week, I performed the GPCRB procedure to optimize gauging at cold temperature. However, the gauge had done some learning with the learning cycle previously. I did the GPCRB procedure now knowing this was a problem, and got the error after I sent in the zip file:

The following errors were reported by the calculation engine:
Error: Ra table could not be extracted from GG file. Make sure that chem ID was freshly programmed and no learning took place. Flags ff55 or ffff should be present 0

So this week I programmed the chem ID fresh, and I confirmed that the Ra table showed the flags = FF55 and FFFF before I began the procedure again. Then I sent in the data, but I'm getting the same error:
The following errors were reported by the calculation engine:
Error: Ra table could not be extracted from GG file. Make sure that chem ID was freshly programmed and no learning took place. Flags ff55 or ffff should be present 0

Why is this? The chem ID was already freshly programmed and the flags were FF55 FFFF before I started. 

Thanks,
Kelvin

  • 0 in reply to Adrian
    Prodigy 90 points

    Hi Nick,

    Thanks for the info. When I did the GPCRB, I used -10C. But ironically, -10C has the worst performance as of now for discharging because it has a 7 minute hold at 100%, before it decreases to 99%.

    0C has no hold, and -20C has about a 1-2 minute hold. All cases use 1A constant current discharging

    Is there anything more I can do about the -10C performance?

    Thanks,
    Kelvin

  • 0 in reply to Kelvin Nguyen
    TI__Mastermind 37761 points

    Hello Kelvin,

    Only other suggestion I have right now is to continuing doing cycles at -10C and see if doing more cycles starts making the performance at that temperature better, since the gauge will continue learning over multiple cycles.

    Regards,

    Nick