s830 lcd display factory

You have a display that communicates with the controller for pedal assist by analogue signal. P05 selects between 3 or 5 power levels. The controller is programmed to react to the voltage levels in the signal wire the same as if that were the throttle signal wire. You should be able to use either of the two settings. Although I said power levels above, they"re actually speed levels. In Chinese, gear means speed.

The throttle signal wire must be shared with the LCD"s pedal assist signal wire, which is why P10 doesn"t allow independent throttle and pedal assist at the same time, otherwise the pedal assist levels would work like a hands free throttle or cruise control.

I am now basically on the same boat, except I have the Samebike MY-SM26. Of course, it came with the locked-down S830, so I am seeking ways to overcome this and tweak the settings a bit (I live in a hilly area).

I"ve already bought (kinda stupidly!) the SW900 display, thinking it would work with the X863 controller (the "hidden" variant which sits underneath the Hailong battery), but no luck, obviously. So now I"m basically looking at 3 options:

Needed a controller for testing so bought the only controller with connector for a display that I could get quickly (surprising how difficult/near impossible it is to find controllers sold alone that have a display cable. But, found Wal-Mart has a GREAT listing of controllers, better than eBay, Amazon, Sears, and Aliexpress combined, 100s of them! Check it out. I"m also now aware you can add a display cable to almost any controller because most have the signals on the PCB. Might be useful to someone.)

Anyway, bought an Ebikeling 36/48V 500W controller (yes, I know 22A capable) for use with 36V 10Ah batt, 2014 LCD 3 and Q100 (yes, I know 12-18A max by tinning the KU65 shunt.) I attempted to turn power down by setting C5=3, or so I thought; and therein lies the problem- that"s BMSBattery C5, and ebikeling S830 LCD display manual doesn"t even mention C settings

Regardless, the ebikeling 500W controller drives the Q100 smoothly on throttle, both sensored & sensorless, and they even work in pedal assist... except PAS is set to 0 in the display (hmmm, 1st clue: PAS shouldn"t work at all if PAS=0).

Here"s the big clue that controller & display aren"t communicating well: LCD 3 display shows 41V in lower right corner (which must be an AD measurement inside the LCD3 display), but MPH, battery icon charge level, W, and battery temp are all blank on the LCD3, and I assume all 4 are controller values "transmitted" from the controller to the display. (Yes, I"ve checked pinouts: swapped 2 sensor pins in the Hall plug which made the Q100 run sensored, and everything else aligns.)

Would someone please validate this logic & correct me of I"m wrong: the old LCD3 display and this new ebikeling 36/48 500W controller don"t communicate well if at all because the LCD 3 display only knows parameters P1-5 (P5=15 of course being 36V voltage level) and the ebikeling controller expects an LCD 830 display and communicates P1-16, e.g. requiring "P03 the parameter to set Voltage Class: 24V /36V / 48V." (P3 for the LCD 3 is PAS mode, 0 or 1.)

Bottom line, I assume the new controller is defaulting to "48V battery" and therefore even 41V full charge is empty, which it "transmits" to the display, if any data is sent at all. Controller probably sends mph, temp, and power, too, but the 5-parameter KT LCD 3 doesn"t understand the 16-parameter data stream.

I have searched battery icon blank, Ebikeling controllers etc, but nowhere did I find a mention about 16 parameter controllers, nor about differing parameter sets being a reason for non-communication, only incompatible displays & controllers. And, I"ve seen lots of discussion about flashing the LCD 3 to work with the TSDZ2 & Bafang MDM"s internal controllers, but nothing about making it work with other controllers.

Yes, I"ve read as many of Amberwolf"s posts on empty or half full battery symbols as I can, but nothing regarding parameters/ comms mismatch. I"m now starting to read casainho"s posts on flashing the LCD 3, but I gather it"s all in reference to the TSDZ2.

Suzhou KUNTENG Electronics Co., Ltd. is a specialized factory focusing on design, development, production and sale of electric vehicle controller, display instruments, sensors, corresponding products

So, same as at my company, there are probably ten or twenty hardware & software engineers sitting in a space together, all designing and programming similar but slightly different P parameter and C parameters and values for all their customers, with slightly different connectors. And they could probably make any one controller talk to a certain display. They"re simply software and memory upgrades. I "simply" want to know how to do it if possible.

Comparing my 2014 LCD3 P & C parameter lists to new S830 & SW900 P parameter sets, there"s very high similarity. Some Shenzhen Kunteng engineering manager probably asked, "So, why do we have 2 parameter lists?"

Then he tasked an engineer to simplify and merge the P & C parameters into one P parameter list, obsoleting some old displays, and creating new sales opportunities. Now the question is, how do I access the new list via the old LCD3? For example, when controller asks for P03 (24V, 36V, 48V) convert and send P5. When controller sends Watts value place it in the W window.

It"s the same thing they did with adding one (yellow) wire to 4-pin LED 810s several years ago, they made them 5-pin 810s, 880s, & 890s...so they"re minimally programmable and compatible with all 5-pin LCD wiring connector.

If three or four of the major motor companies motors often work with either LED or LCD 5-pin displays, then all of the 5-pin displays most likely share the same communications protocol. The difference, then, is the P & C parameters and the order in which they"re sent& read.

I read a very good article showing how to sample the serial line to be able to view controller data in the eBIKE display, by ebikebuilder1. Similar 16 parameter output as noted above.

Searching around, it seems Shenzhen Kunteng makes a large percent of all small EV controllers as well all the LED 790, 810s, 880s, 890s, all the LCD 3, 5 6, 8, 830...& 900 displays.