Sivs

OK Thanks again for the help With my manual I had no idea how to get to the P & C parameter settings, however I found a good one published by bizobike, so I have been able to get in and make some changes, which has now given me a running motor with PAS. At the moment I have the bike hung up in the garage and with the settings below i get the following: Walk mode 3.9 mph (which equates correctly to my wheel speed)- this seems OK about 6kph But running in PAS level 5 with no load (front wheel in the air) I only get 6.9mph which is too slow? SETTINGS Max speed 25 kph / Wheel size 27.5 (as per my bike) P1 87 (controller default, motor magnets x ratio) - mine is a geared motor marked "Swytch", but I don't know the true value P2 1 think this is correct as speed display is correct and I'm getting 1 pulse per rev on the white wire from the wheel P3 1 "imitation torque control"?? should I use 0 for speed control? P4 0 I don't have a throttle so this is OK? P5 0 - real time voltage for power monitoring other settings seem to show flat battery C1 03 12 magnet sensor which I have C2 0 Motor classification? C3 3 Powers up with level 3 assist C4 0 I don't have throttle so assume this does not matter C5 10 max current C6 3 backlight level C7 0 cruise off C8 0 motor temp off C9 0 password off C10 n C11 0 to suit LCD3 controller C12 4 (min controller voltage 30V) I'm thinking I my need to change P1 and or P3? I tried P1 set at 180 and got a no load speed of 9.9 mph Thanks again in advance

Hi thanks To be clear I tested with the PAS on the PAS wires And then a second test on the throttle connection I shorted the red to signal as per your earlier suggestion to simulate full throttle The KT controller does not seem to have the same options for setting up either PAS control or throttle or both but I assume it is always set to both Leaflet attached for KT controller

OK so now I have got the new KT Square wave controller and display from China and have just tried it Frustratingly I still have a very similar problem The motor runs ok in walk mode but nothing with PAS input Measuring the signal to ground I am still getting a very good 12 pulse per rev square wave as per attachment but no motor rotation I think I’ll buy the suggested replacement PAS as it is only £12 but not sure if it will work I have also tried simulating a throttle connecting the +5v to the signal and the motor makes a tiny movement (approx 1/20th of a rev) if I leave it applied there is no more rotation and after about a second I get error 01 “throttle abnormality “ Motor runs smooth in walk mode My battery is giving only 33.2v but I’m thinking it should be ok? Any ideas?

I did not try that as I have the sealed PAS unit which you cannot remove the magnets Also I’m getting a very good square wave output from the pas even at low cranking speed Waiting for the new controller now Thanks Sivs

Thanks very much Nealh I have ordered the KT controller and lcd3 from pswpower I can see on their website that it suits no hall connection so fingers crossed this will work - I don’t suppose somewhere on the site there is a list of compatible motors controllers etc? Thanks again Sivs

In response to VFR400 note of July 19th My motor runs smoothly in walk mode - no rasping noise, I've double checked all the connections to ensure they are good. I can make it learn forward or backward rotation with the learning wires, but that's all I get, I never get a poor rotation. regardless of if I have the hall sensors connected or not I get the same result - only runs in walk mode. (original set up did not use the hall connections and ran very well As my earlier image I'm getting a good 12 pulses per rev from the PAS but neither the PAS or using a staple to pulse a signal without the PAS makes the motor run. Also shorting the throttle does not make the motor run (but I am getting the 5V on the signal wire) So I believe the motor is OK and I have a controller fault perhaps I've now sent the controller back to Amazon as the 1 month return period was up. Can anyone suggest a controller and LCD display kit I can try next to suit this 36V battery and 250W swytch motor? Ideally one that does not need hall connection as it originally did not use these connections Thanks, Barry

Yes I had the same thing - need to disconnect the self learn before switching off to make it change motor direction

Hi VFR400 Thanks again for your reply I've made the changes to the settings as you suggested, but still with no success (wheel mptor not running with PAS, only when using walk mode) I have also tried: a) setting to throttle and shorting red to white on the throttle connection but still no wheel rotation, the red is at +5V and the white comes up to 5V when I connect it, so I'm making the connection OK b) I've also tried the tapping the red and signal wires for the PAS together as you suggested, sometimes I just get audible clicks from the motor without rotation, but sometimes the motor runs, I managed to keep it going for a while but the motor only runs at a very very slow constant speed (16 seconds for one wheel rev), I tried at different assist levels and boost start strength but got the same result - remember I still have an E07 shown indicating motor failure - so perhaps this is what the problem is? - but I find this hard to understand as the motor runs OK at the right speed in walk mode? c) I've also managed to record the voltage when cranking at the PAS sensor - I can get much the same square wave whether I crank the pedals or tap the wires together - see attached picture which shows a good square wave from 0V to 4.36V - however I can only get the motor to run when tapping the wires together - so not sure what the difference is? I'm thinking of returning the controller and LCD and getting a different one - any recommendations?

Hi VFR400 thanks for your reply. BTW I always fancied the VFR400 (the one sometimes referred to as RC45? with the twin headlights) great bikes! OK I have tried your suggestion. I connected all 5 motor hall wires and connected self learn wires. When I switch on there are about 5 audible clicks from the wheel, I waited a couple of minutes but the motor never runs just the one set of clicks as soon as I power up. So I switched off, and disconnected learning wires. Then when I power up motor direction is reversed, but I can still only run the motor with the walk mode, PAS does not work. If I repeat the process, each time I assume it reverses the motor direction as it alternately runs forward or makes a noise of motor running but wheel not turning. To me it seems like self learning just sets up the direction? I tried measuring the hall output voltages with the module on and all three give a steady +5V, I get the same result running in walk mode - so this seems wrong surly halls should be pulsing? As I said I have error message E07 "Motor failure" I must also point out that this ebike did not originally have the hallwiring connected, so when I try without hall connected I get exactly the same result (runs in walk mode, but not with PAS when cranking), and I can still make it learn alternative rotation directions. The speed indication in walk mode is 25mph!! on the display, but calculating from wheel revs it appears to be about 4.5mph which seem about right. I was able to get this to read correct but only by using absurd settings for P06, P07 and P18 Please see the setting I am using: P01 backlight level = 2 P02 Units = 1 (miles) P03 voltage 36V (as battery) P04 Sleep time = 10 mins P05 Power assist mode= 2 (9 power levels) P06 wheel diameter 27.5 inch P07 No. of speed magnets = 45 (I have no idea what my wheel has it was bought from Panda ebikes but is branded SWYTCH - it is a front wheel P08 speed limit 25 kph P09 = 0 (zero start) - don't know what this is! P10 Drive mode = 0 (this gives PAS on the display) P11 Boost sensitivity = 1 - don't know what this is! P12 Boost start strength =3 P13 Power magnetic steel type setting =12 (for 12 PAS pulses per rev I assumed) P14 Current limit = 9 amps P15 Controller undervoltage level = 29 V P16 ODO clear option P17 = 0 Cruise not enabled P18 Display speed ratio = 100 P19 0 gear - Don't know what this is! P20 Protocol - 0 Let me know if you have an suggestions Thanks very much Sivs

Hi Andy, Sorry I cannot help, but your problem looks very much like mine I posted the other day! My issue is I bought a new controller and lcd display as my ebike had a fault (display showed empty battery even though it was OK and it would not run the motor at all) Now I have fitted the new parts I have a bike that like your scooter - it runs the motor in walk mode, but nothing happens when I use the PAS or throttle inputs I have tried many different settings but nothing seems to work. So let me know if you get a breakthrough please! see my post here https://www.pedelecs.co.uk/forum/threads/brainpower-controller-and-s886-display-problems.38289/

Hi, I've been looking at this controller having just bought one myself this item on Amazon may be of help? https://www.amazon.co.uk/Brushless-Controller-Aluminium-Controller-Waterproof/dp/B07RVDW4MV/ref=sr_1_5?dchild=1&keywords=ebike%2Bdisplay%2Band%2Bcontroller&qid=1593961785&sr=8-5&th=1 The image of the controller in the above only gives connector allocations, not clear wire by wire functions In the description there is a detailed description of the wires for, I assume, just the LCD display wiring for the 5 way and two way connectors: Each cable is labeled with color for different uses. Red: power positive electrode Black: power negative electrode Yellow: power output Brown: lamp positive electrode White: lamp negative electrode Blue: indicator signal Green: signal receive

Hi, looks like a nice forum!. My Panda ebike conversion to my wife's bike has failed, and being unable to get any response from Panda ebikes I've finally tried to fix it myself. The issue I had was that although the battery was fully charged and had 37V the LCD display on the handlebar shows empty battery and the motor would not power when pedalled or using walk mode. I have fitted the Brainpower controller (model S866-C) and the LCD display S886 (thinking good to fit a pair), the good news is this now shows full battery on the S866 display and when I use the walk mode the front wheel drives correctly at about 4 mph (after using the intelligent wire to reverse direction). My original kit was wired with no motor hall connections, just the three phase wires, so I have left it like this. The problem is I am getting no motor drive when using the pedals (PAS), and I also have an error "E7 - Motor Failure" but the motor can run as in walk mode Checks I have made are: PAS - when pedalled forward I am getting output voltage switching between 0V and 4.6V 12 times per crank rev so this looks OK (constant 0V when back pedalling) - I measured on the blue wire of the 1:1 accelerator connector as attached image. - I believe this is the correct connection for the PAS - I have set P13 to 12 pulses per rev for the PAS output. Throttle - I have no throttle but tried connecting the red wire to the white wire in the "Speed throttle" connection while control is in throttle mode, but again the motor will not run Voltage is set to 36V as per my battery I have checked the P10 setting to ensure PAS is displayed on the LCD, but tried it on throttle as well. Hall sensors - my wheel (which is marked as a Swytch wheel) has hall sensor wires so I tried connecting them, but again no motor control Brake wire - tried shorting this just in case a short was needed for no brakes, but display then shows brake symbol - and again no power to the wheel It seems odd the motor will run in walk mode only - any ideas anyone? maybe the controller is no good? See attached image Many thanks