Q100/EB306 Current Settings

[Marctwo]

Hi all,

I'm using a Q100, 201rpm, 36V, 250-350w motor with an e-crazyman 36V, 350w EB306 controller. I'm programming with XPD and wondered how far I could reasonably push the current settings.

 

[Deleted member 4366]

17 amps at 44v (12S). Probably about 20 at 36v. Battery current.

 

[Marctwo]

Cheers. That gives me a bit of leeway for testing then.

 

[amigafan2003]

I'm running 12.5 amps on 15s lipo (63v hot off the charger). Gives about 780watts peak.

No overheating thus far, although the gears do sound like they grumble a bit if I give it full beans from a standstill, so I try to be easy on the throttle and always pedal as well.

 

[Deleted member 4366]

I'm running 12.5 amps on 15s lipo (63v hot off the charger). Gives about 780watts peak.

No overheating thus far, although the gears do sound like they grumble a bit if I give it full beans from a standstill, so I try to be easy on the throttle and always pedal as well.

I agree. About 800w from the battery is the sweet spot. Any less is the sweat spot .

 

[Marctwo]

I've just tried it at 15a with 36V battery (~42V charged); That'd be about 630w. It seemed to go quite well but still needs a bit of leg work when the wind hits. It was barely warm after about 3 miles so I'll probably try it at ~19a when I get the chance... See if I can hit the sweet spot too.

@amigafan2003: I know what you mean about a standing start with the throttle... It's not at all happy. lol

 

[Deleted member 4366]

I've just tried it at 15a with 36V battery (~42V charged); That'd be about 630w. It seemed to go quite well but still needs a bit of leg work when the wind hits. It was barely warm after about 3 miles so I'll probably try it at ~19a when I get the chance... See if I can hit the sweet spot too.

@amigafan2003: I know what you mean about a standing start with the throttle... It's not at all happy. lol

Are you running sensorless, because these motors run much better sensored. I've not had any trouble starting with the throttle without pedalling.

 

[Marctwo]

Sensored.

It's fine once I'm rolling a bit. I wonder if there's something not quite right there...

 

[Deleted member 4366]

Sensored.

It's fine once I'm rolling a bit. I wonder if there's something not quite right there...

The KU63 controllers that BMSBattery supply are high speed controllers and are specially suited to the Q100 motor. I don't know if that means high commutation speed, which shouldn't have much advantage at start-up, or maybe they work faster to give more accurate timing. Who knows, but it seems that some controllers work better than others with some motors.

 

[Marctwo]

I tried it first with a KU63 and the throttle start was the same.

I'm not sure if the gears are actually slipping or what. I'll have a good listen to it and see what it sounds like.

 

[Old_Dave]

By coincidence my EB306 turned up today, just need to change the brake and power plugs to sockets and I'll give it a test and see how it runs.

Very important to make sure that the halls are properly connected as that can cause roughness

 

[Marctwo]

Yes, I had to change a few connectors too. I matched the hall colours, found the right phase combination and it all went very smoothly.

 

[Old_Dave]

Ok.. Matched hall colours and motor low speed runs rough with excessive current, so will have to have a game of swapping and see if it can be improved


Sent from my iPhone using Tapatalk

 

[Marctwo]

If it helps, I ended up with:
ctrl blue > mtr green
ctrl green > mtr yellow
ctrl yellow > mtr blue

 

[Old_Dave]

If it helps, I ended up with:
ctrl blue > mtr green
ctrl green > mtr yellow
ctrl yellow > mtr blue

Lol.... kinda

I arrived at the same but still a little bit of roughness... so I decided in my infinite wisdom to continue running through the possibilitys.

I returned the motor phases to normal and redid the halls.. got as far as
yellow to green
green to blue
blue to yellow
which I think was even better... now here is where I should of stopped, but did I ?
NO I did one more and bang !!! accompanied with the customary nasty burning smell.



Ho hum, I'll give it a bit of thought later

 

[Deleted member 4366]

... now here is where I should of stopped, but did I ?
NO I did one more and bang !!! accompanied with the customary nasty burning smell.

Ho hum, I'll give it a bit of thought later

Dear oh dear!. My heart is bleeding for you. If it's a FET that blown, I 've got a spare IRFB4110, if that's what you need. They're not easy to replace though. You have to be very careful not to lift the pads, and the pads are very close to others, so a danger of whiskers/bridges etc.

Not sure yet what went wrong with Dave's, but for anybody else figuring out phase/hall combinations: Never use full throttle during the testing because with the wrong combination, the motor is effectively stalled, so a high risk of blowing FETs. If you can, use a meter to monitor no-load current, which is the best gauge of whether you have the right combination.

 

[NRG]

As Dave say's, looks like a blown FET, thats really bad luck.

 

[Old_Dave]

I'll give it a close examination tomorrow as I have the right raving hump with it at the moment, and we all know what happens to things when we are in that kind of mood, lol

I think I will see if its still programmable before embarking on on the examination, just in case the crash of drums and flash of light fried the processor

If you can, use a meter to monitor no-load current, which is the best gauge of whether you have the right combination.

Which in hindsight would of been a great plan ... next time

 

[jackhandy]

Ahh - Hindsight & a Round Tewit - Essential items in everyman's toolkit.

 

[Old_Dave]

Lol... Well I got a round tuit a while back but it didn't help at all




Sorry about the shakey photo.. but I was laughing