Infineon 9FET Controller and 9C 36v FH from e-bikekit.com

[PeteCress]

Has anybody figured out where "Th pad in PCB" referred to in Renissance's page on the Cycle Analyst "Stand Alone" model CA-SA (http://www.ebikes.ca/drainbrain.shtml, scroll down to #8) is?

This is used to enable the limit features in the controller by running a jumper from the "Hall Effect Thorttle Signal" in the wires from the throttle to the controller to "Throttle Override" in the controller.

I tried to start a thread on this several days ago (http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=15101), but there have not been any nibbles.

 

[bikeelectric]

I finally did the regen mod on the controller by soldering across the BK to Ground pads. I hooked up one of the brake levers with the switch that I had never used before. It works ! I am using a 48 volt Headway 10 AH battery pack. The BMS doesn't seem to keep this from working and I hope I am not harming it somehow by having regen . Problem right now is I also soldered up the shunt and I haven't recalibrated my Cycle Analyst so I don't know the correct amps. I put a bit of solder wick on the shunt but I think it was too much because when I push the throttle down too fast my BMS kicks off. It is rated 25 Amp min - 35 Amp max. I just opened up the controller again and took the solder wick off and just put some solder on both shunt wires.

While I have the controller opened up again I am going to add some wires to the cruise control pads - as soon as I read back this topic to see where they go !

 

[nomad85]

Compared to stock?

Assuming we have the same stock settings (22amp limit / 31.5v cutout, 100%) then changing to 30 amp will give you a large boost over the accelleration of 22 amps.

Assuming 62v for simplicity sake:

62 * 22 = 1364 watts (or 1.82 hp)
62 * 30 = 1860 watts (or 2.48 hp)

I have been baffled by your 39-45 mph speeds on only 15s lipo before, what motor are you running(9x7, 10x6)? I get 33mph tops with 15s and that is downhill. 31mph max on the flats. Explain your setup please In simple terms if you can :lol:

Also what are your current thoughts on regen with lipo?

 

[Hyena]

I get about 39mph with 120% timing on my GM 1000w hub with a fully charged 15S lipo pack and 12 fet infineon. 45 mph would definitely have to be down quite a grade though.

Regen with lipo is fine -they can take the high current better than most other chemistries and unless you charge to 4.25v/cell and live on the top of a mountain that you brake all the way down you'll be fine. If you charge to 4.15v/cell the second you accelerate it's going to drop to 4.1v or less and realistically regen is typically for short bursts and even if there's a longish decline after a few minutes of riding there's little risk of overcharging.

 

[mwkeefer]

Hyena,

Now grab a hex editor... Open Parameter Designer with the hex editor and locate (use search) the proper data section where 110 115 120 are located and replace 110 with 115, 115 with 120 and 120 with 130... save it and run then flash your infineon with the 130 (or try 125 just for proof of concept)...

A word of warning.... Never go full throttle before moving or you will hear an odd clunk and the controller goes back to 100% timing on it's own, simply a tiny feather for 1/2 second before slamming it and your Golden... I never went past 130 with my 9FET or any other but it may be possible...

This is also how I set the exact LVC and Tolerance I need for a given pack, gotta love Hex Edit!

-Mike

 

[Hyena]

Thanks Mike, I'll give it a try when I can ride again.
Did you notice any surging when using advanced timing ?
I noticed with 120% I'd get occasional surging at less than full throttle - like I'd be cruising along at say half throttle and very gently rolling it on when it'd get sudden bursts of acceleration and torque. The torque actually felt stronger than when normally accelerating but I suspect it may be just psychological, because I wasn't expecting it. It might also be that the throttle loses some 'resolution' at higher voltages and coupled with advanced timing it makes for twitchy responses from the slightest throttle inputs

 

[mwkeefer]

Thanks Mike, I'll give it a try when I can ride again.
Did you notice any surging when using advanced timing ?
I noticed with 120% I'd get occasional surging at less than full throttle - like I'd be cruising along at say half throttle and very gently rolling it on when it'd get sudden bursts of acceleration and torque. The torque actually felt stronger than when normally accelerating but I suspect it may be just psychological, because I wasn't expecting it. It might also be that the throttle loses some 'resolution' at higher voltages and coupled with advanced timing it makes for twitchy responses from the slightest throttle inputs

Yes at first... you already figured it out, the voltage rails become askew at higher voltage and resistors should be changed to compensate... fire it up and check the RED and BLACK lines going to the throttle, if they are over 5v then it would explain the partial throttle Over Drive engage ... also thumb and half twists have less mechanical resolution making the matter worse.

If the issue mostly happens at full pack voltage, I would suspect the regulator... at any voltage I would suspect the controller.

-Mike

 

[oldhaq]

At first I thought I was imagining a surge too. I've tried throttle at incremements of 5 up to 150%, but anything over 120% the dd hub runs slower top speed and seems rougher at top rpm.
Rob

 

[amberwolf]

just order 2 sample max232 ic's for FREE?(not sure if samples are available, but worth trying)

Or dig in your "old computer stuff" closet box and find that old ISA I/O card...it probably has two DIP style MAX232s on it, at least. If you don't mind gullwing SMT stuff, SOIC style, they're commonly found on most motherboards, if you have an old dead one (like with blown caps/etc).