So below is what I tried and it seems to work OK - Try below at your own risk
I an running dual DIYE 4.12HW vescs in FOC that came with 2.18FW. Updated vescs to 3.34FW using vesc tool 0.87.
The parameter “Max ERPM at full brake in current control mode” exists in BLDC tool but for some reason seems to have disappeared in the vesc tool.
So the first thing I did is to save motor xml file from vesc and then load it into BLDC tool. All parameters seemed to load OK into BLDC tool with same current and voltage settings.
Noticed that the value of “Max ERPM at full brake in current control mode” was 1500 erpm which corresponds to the speed at which the brakes were grabbing .
You may be able to adjust that setting in BLDC tool - then do a xml save and then load xml file into vesc tool and then download to vesc. I didn’t want to try this due to possibility that bldc tool could upset parameters in vesc tool and possibly fry the vesc.
So what I did was to get a xml file editor ( I used one from mediafreeware.com )
Then get the vesc motor xml file from vesc tool and load it into the xml editor.
Look for a line showing
The using xml editor - change the 1500 no to 200 ( about 1km/hr for me) with no other changes.
Then using xml editor save the xml file , then load that modified xml file into the vesc tool and then push motor config to the vesc. repeat for the other vesc if running dual drives
Note - one of my vescs came with 1500 for “Max ERPM at full brake in current control mode” and one was showing 500 . I guess these were different default settings on initial 2.18FW set-up and have not been changed by the vesc tool ( A bit strange!).
I changed both vescs to 200 erpm and it seems to work fine.
Cheers
