BBSHD ASI BAC855 programming thread

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fja2   1 mW

1 mW
Posts: 16
Joined: Nov 07 2019 3:06pm

BBSHD ASI BAC855 programming thread

Post by fja2 » Apr 02 2021 3:10am

This thread is about programming ASI BAC855 controllers that are paired with a BBSHD motor.
Easiest way to program: Use a regular bafang BBSHD HIGO display to USB(TTL) adapter and the BACDoor software.
When changing parameters I always press the write button, then I press (Menu->Parameter->Save to flash) in BacDoor.

If anyone got a descent xml file, please share!

I may release multiple profiles in the future, but I'll start with the one I use daily.
Description: It will try to keep tension on the chain while the bike is moving giving you a very light push once you've acceletrated, it will stop the tension(turn the motor off) whenever you stop.

Code: Select all

*V1* Initial release.
*V2* Disabling stuff, optimizing parameters.
-Changed "Rated system voltage" to 58 V
-The motor now ramps up to torque a little slower, no wheelies! But also no broken nylon gear.
-Disabled a bunch of inputs that I don't use, PAS, regen, etc.
-Changed BMS interface type from 0(None) to 1(Voltage model)
-Retuned the RPM, Rs, Ls, Hall offset using the autotune feature.
-Changed sensorless settings (They're not used, but now the values makes it more likely to work.)
-Changed a few other settings that don't seem to affect the ride in any way.
The "eco" mode doesn't do anything intentionally as a kind of sabotage proof/safety system. I got my display set so it always turns on into "eco" mode.
BBSHD everyday.xml
(53.26 KiB) Downloaded 2 times
BBSHD everyday-v2.xml
(53.26 KiB) Downloaded 2 times

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