Hoping to use a S12s controller with an Ezee mk2 motor

[jackhandy]

My Ezee kit has served me well for the past 3 years, but the controller has died on a very steep hill: No indication of life whatever. I bought a S12s controller from Bms battery, have gone through all 36 permutations of phase cables & hall wires & found one that runs ok, but the motor is totaĺly gutless.

Fundamental question - Is the S12s compatible with the Ezee mk2 250w (UK spec.) motor?
If so, can anyone suggest what I might have done wrong?

I have a controller tester & (as far as I can tell) both motor & controller check out ok.

 

[d8veh]

Yes it is compatible. Do you know that the controller doesn't work properly without the LCD? Did you install the LCD?

 

[jackhandy]

Just a quick add:

Connecting the tester to the controller as instructions, when I open the throttle a little, 2 opposite (rotational) leds light & rotate anti-clockwise but, as they do so, the led trailing one of the pair remains on, as if it's lagging a little.
ie. There are sometimes 3 lit.

 

[jackhandy]

Hi D8veh, I was hoping you might help when I posted on pedelecs - it's been a while.

Yes, I have the S-lcd5, not the s-lcd3, but assume that should be ok?

When I first connected, colour to colour, nothing worked so I went through the 36 phase/hall combinations until I found one that runs, but it's definitely not right.

 

[d8veh]

There's a setting you have to get right after you have the correct phase/hall wire sequence.
P1 is the number of magnets in your motor times the reduction ratio. Gear ratio is 5:1, but I don't know how many magnets in it. perhaps you could ask John (Cyclezee)

There's another setting, but I don't think it has anything to do with your problem:
C2 is something to do with motor phases. The default is C2=0, but there's additional settings 1 to 7. I've never seen any documentation that explains that setting.

The other thing is the speed signal. Where's it getting the speed signal from. Is the speed reading correctly on the LCD?

 

[amberwolf]

If your motor is the same as this one
https://endless-sphere.com/forums/download/file.php?id=124002&mode=view
you can count the magnets in this pic.

 

[d8veh]

P1 =160 then.

 

[jackhandy]

Thanks for the help, D8veh & Amberwolf:

I've set p1 to 160, re-checked the phase/hall setup & found a more reliable wheel-speed sensor, so I'm eliminating problems now.

There's still no grunt from the motor, although it sounds smoother.
As the 60 deg. led on the tester doesn't light, I'm assuming the motor phase is 120 deg. and basing the hall sequence on that.

An old contact from pedelecs is letting me borrow a known-working S12p, so I'll try that on the bike tomorrow, just to confirm there's no gremlin in my new controller.

If you'd be kind enough to watch this space until then, I'll let you know what occurs,

 

[Cyclezee]

There's a setting you have to get right after you have the correct phase/hall wire sequence.
P1 is the number of magnets in your motor times the reduction ratio. Gear ratio is 5:1, but I don't know how many magnets in it. perhaps you could ask John (Cyclezee)

The answer to life the universe and everything is 42, but in this instance it is 32

 

[jackhandy]

Well - borrowed a S12p from Allan Quay, of pedelecs, and the bike took off like a rocket: Quiet & Very powerful.
Only runs sensorless, of course & haven't yet got it to work with the pedal sensor, but goes great with 1100 watts up it ☺; so should I just accept that this motor doesn't like sinewave, and, if so, what controller should I be looking for (S09p, maybe), or is the fault more likely to be my hall sensor sequence & therefor better to run sensorless, or are there further avenues to explore with the S12s?

I'd be very grateful for any further suggestions.

Is there any chance a uk supplier might have what I need?

 

[jateureka]

Jackhandy,

Did you find a suitable controller for your Ezee motor?