help, speed control do not work on lcd05

i have a kit, controller kt from pswpower, with lcd05. I set speed to 25kmh but it do not work, bike go to 40 kmh.. why?

andrea_104kg said:

I set speed to 25kmh but it do not work, bike go to 40 kmh.. why?

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The original Kunteng-firmware always uses the motor rpm for speedlimiting. You set the gear ratio with parameter P1. If you want to use the Kunteng with a middrive-motor, you have to use a special-middrive version, or have to flash the open source firmware...
Then the speed is limited by the signal of the external speedsensor.

regards
stancecoke

thanks, the engine I use is a simple modified hub, I don't see why you should use a specific ECU ... how do they differ?
it is not like a mid motor that reaches 4000rpm, currently with the control unit I use it is fine, I have only the drawback that the speed limit does not work.
I will try to change the parameter p1 but I do not know the motor data and I think it is perfectly useless to ask the Chinese for them :-( currently I have set p1 to 87 as a normal bafang bpm

andrea_104kg said:

I don't see why you should use a specific ECU ... how do they differ

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With a middrive, the is no constant ratio between motor rpm and wheel rpm as you have a gear shift normally. So the parameter p1 can be fitted to 1 gear maximum. All other gears will lead to a wrong speed limit.

I can't find the Kunteng-Middrive-Version (S06SC the C stands for central motor) at BMS-Battery any longer :-(

slabbetje said:

1. S06SC Sine Wave Controller for Central Motor
https://bmsbattery.com/ebike-kit/695-s06sc-sine-wave-controller-for-central-motor-ebike-kit.html

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https://electricride.de/epages/100f713d-a2a9-46d9-9299-a6d8ad8c796f.sf/de_CH/?ObjectPath=/Shops/100f713d-a2a9-46d9-9299-a6d8ad8c796f/Products/%22Controller%20S06SC%20Torque%22

regards
stancecoke.

thanks, the price in germany is really too high! I could try to put the modified software. Are the tools the same as those used for tsdz2? my ECU is this, http://www.pswpower.com/ven.php?cargo.2016-3f-33c0
do you think it is possible? Thanks so much

andrea_104kg said:

I could try to put the modified software. Are the tools the same as those used for tsdz2?

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Yes, the processor is the same and the Kunteng project was base of the TSDZ2 open source firmware. The difference is the way to flash, the Kunteng OSF uses the java-GUI to set all parameters and flash, (this GUI was the starting point for the TSDZ2 java tool of qmarco and later mbrusa :wink You can't change the parameters (except the speed limit) with the KT-LCD-xx-Display later at runtime. For setting the parameters at runtime, you can use the BluOsec-App.



You can find the tutorial in the git-wiki, see my signature.
Main advantage of the firmware is the possibility of using a bottom-bracket torquesensor like the E-Rider or Sempu, that gives the system the behaviour of a high-end-bike! 8)

andrea_104kg said:

my ECU is this, do you think it is possible? Thanks so much

Click to expand...

Yes this should work with the OSF :thumb:

regards
stancecoke