Hey guys,
I'm planning to build another E-Bike for several years now, since the last one I built was stolen. The complicated setup of the controllers I knew back when I started the build has always been a bit of a mental demotivation. But today, by chance I read about the S12S and similar controllers which seem to be easy to set up, so I'm motivated now and finally want to finish my bike this year.
It is a 20" bike (Giant Revive) and I'm going to install a Puma at the front. The fork and motor are already finished.
Gallery: https://imgur.com/a/tTuFe
I will use 80 A123 cells in a 16s5p configuration, so it is going to be a 48V setup with a maximum charge voltage of ~60V.
I want to keep it street legal (250W) and need a max current of 5A, so here's my first question:
1) Can I modify the S06S to accept 48V?
https://bmsbattery.com/controller/842-36v48v-250w-controller-for-brushless-motor-with-bluetooth-ios-app.html
I read somewhere that a resistor in front of some internal voltage regulator is 60ohm for the lower voltage controllers, and 200ohm for the 48V version. But it can't be that simple can it?
I have read through the manual of the S12S controller as well.
https://bmsbattery.com/ebike-kit/552-s12s-500w-torque-simulation-sine-wave-controller-ebike-kit.html
I also have several questions here:
2) What difference does the magnet number of the PAS make? There are several versions with 5-12 magnets available:
https://bmsbattery.com/parts/49-five-poles-pas-pulse-padel-assistant-sensor-ecitypower-parts.html?search_query=pas&results=69
https://bmsbattery.com/parts/570-eight-poles-pas-pulse-padel-assistant-sensor-parts.html?search_query=pas&results=69
https://bmsbattery.com/parts/579-ten-poles-pas-pulse-padel-assistant-sensor-ebike-kit.html?search_query=pas&results=69
https://bmsbattery.com/parts/504-pas-pulse-padel-assistant-sensor-with-12-pcs-magnets-parts.html?search_query=pas&results=69
Also, the C1 settings only allow 5, 8, 10 magnets, not 12.
3) What does happen when I connect a 12 magnet PAS?
4) Do I need to connect a speed control grip, or can I also use the controller without one?
5) How would the controller react if operated without throttle? Full throttle all the time?
6) What would happen if I connected a full throttle signal permanently to the throttle input via a voltage divider or something?
As I wrote above, I would like to limit my power to 250W by limiting the current to 5A. But the C5 parameter only allows the current to be limited to 1/2 the controller rating which would be 25A/2=12.5A here.
7) Can I bring down my max current to 5A by setting C14 (assist strength) to "weak"?
Thank you very much for helping me!
I'm planning to build another E-Bike for several years now, since the last one I built was stolen. The complicated setup of the controllers I knew back when I started the build has always been a bit of a mental demotivation. But today, by chance I read about the S12S and similar controllers which seem to be easy to set up, so I'm motivated now and finally want to finish my bike this year.
It is a 20" bike (Giant Revive) and I'm going to install a Puma at the front. The fork and motor are already finished.
Gallery: https://imgur.com/a/tTuFe
I will use 80 A123 cells in a 16s5p configuration, so it is going to be a 48V setup with a maximum charge voltage of ~60V.
I want to keep it street legal (250W) and need a max current of 5A, so here's my first question:
1) Can I modify the S06S to accept 48V?
https://bmsbattery.com/controller/842-36v48v-250w-controller-for-brushless-motor-with-bluetooth-ios-app.html
I read somewhere that a resistor in front of some internal voltage regulator is 60ohm for the lower voltage controllers, and 200ohm for the 48V version. But it can't be that simple can it?
I have read through the manual of the S12S controller as well.
https://bmsbattery.com/ebike-kit/552-s12s-500w-torque-simulation-sine-wave-controller-ebike-kit.html
I also have several questions here:
2) What difference does the magnet number of the PAS make? There are several versions with 5-12 magnets available:
https://bmsbattery.com/parts/49-five-poles-pas-pulse-padel-assistant-sensor-ecitypower-parts.html?search_query=pas&results=69
https://bmsbattery.com/parts/570-eight-poles-pas-pulse-padel-assistant-sensor-parts.html?search_query=pas&results=69
https://bmsbattery.com/parts/579-ten-poles-pas-pulse-padel-assistant-sensor-ebike-kit.html?search_query=pas&results=69
https://bmsbattery.com/parts/504-pas-pulse-padel-assistant-sensor-with-12-pcs-magnets-parts.html?search_query=pas&results=69
Also, the C1 settings only allow 5, 8, 10 magnets, not 12.
3) What does happen when I connect a 12 magnet PAS?
4) Do I need to connect a speed control grip, or can I also use the controller without one?
5) How would the controller react if operated without throttle? Full throttle all the time?
6) What would happen if I connected a full throttle signal permanently to the throttle input via a voltage divider or something?
As I wrote above, I would like to limit my power to 250W by limiting the current to 5A. But the C5 parameter only allows the current to be limited to 1/2 the controller rating which would be 25A/2=12.5A here.
7) Can I bring down my max current to 5A by setting C14 (assist strength) to "weak"?
Thank you very much for helping me!