Optimistic Kelly
- Thread starter space4dreamz
- Start date
gwhy!1
100 kW
zener said:
with the ramp set to 0 it still has lag or it just maybe because due to the lack of phase current either way it make it very slugish off the line.
gwhy!1
100 kW
zener said:
no CA just a very simple setup, looking for max punch off the line with everthing maxed out.
crossbreak
1 MW
hey zener, which kelly do you use and what max bat amps do you see? thx!
gwhy!1
100 kW
It was a side by side comparison against a 12fet controller so same battery not totally sure what kelly it was but it would have been bought on the assumption that it was at least 100 battery amps the motor just a small gng type so motor speed would not have been a issue. It would not touch the 12fet off the line. I will find out what modle number the kelly was next time I talk to my colleague.
Bluefang
10 kW
Have you changed the throttle settings in the Kelly? Balanced seems to give a improvement in power over speed and torque
crossbreak
1 MW
So max bat´current is about the same as max cont. motor current in Kelly specs? Thanks. That seems to be fine to mezener said:
zener
1 kW
- Joined
- Jan 16, 2014
- Messages
- 353
crossbreak said:
They are actually a little underrated.
You can calculate the max. bat power by take 80% from the max const.- and peak phase.
But its always better to invest $50 more in a bigger controller than u actually need than running it always in max.
dan974
1 kW
your stuff is wrong...crossbreak said:
I git the KEB726000 and I got +8KW battery peaks...easly...their 6Kw rating is for 72V 110A nominal motor current...so ~ x0.7 @ battery current...so I had 190A peak battery current with it your peak battery current is false...it's 0.7 x motor current peak so : 240A x0.7= 168 battery peak current I fact I mesure +15% with my shunt and the CA...
dan974
1 kW
gwhy! said:
here you can adapt the "lag" of the throttle(T up/down rate)
and here you can see the 0.7=70%
maybe 100% on the KBS model
and the start/end Throttle voltage signal to setup the dead zone and the Full throttle not to have to break your arm from dead to FT..(T effective starting/ending)
dan974
1 kW
crossbreak said:gwhy: Throttle LAG!?!? In a $$$ controller!?! Is this a joke as well? I must test this!
From: http://endless-sphere.com/forums/viewtopic.php?f=28&t=57668&p=874709#p874679
dan974 said:130 peak should give you 0.7 x130 =90a peak, and able to give 40A continuous.... My 240 rated peak key gave me 189A ( battery) in thé sand, and easy 110 A boost on flat the question is : are you able to handle a 72V 90a peak ? Don't forget the kelly is a square/truesin mix,... I think the guy you mention was never able to setup it....but I do not know kbs only key ones....crossbreak said:about our Kelly: It seems that it does only around 3/5 as battery current of the rated 55A "motor current". That would be 33A battery current for our chosen one. For 20s Li-ion we should see 2442W peak. Not 4kWthis motor will be bored a bit: http://endless-sphere.com/forums/viewtopic.php?f=30&t=57596&p=874677#p858870
http://kellycontroller.com/faqs.php
http://kellycontroller.com/KBShelp.php
Set motor at 100% if you don t care heating it
And battery % according to the peak value and the I precomize 60% OF YOUR battery C discharge not to destroy it...for exemple a 8ah 30c = 240 A take 144A as max discharge not to damage...so set at 100% battery (or maybe 70% is max like on keb model) If you got a 20c 8ah, 160 À discharge, take 96A AS REAL, THEN downgrade the battery current to 70 % to protect from too much discharge, or if your sag is too much
Take nite that the software can give you full motor current at low speed because of current multiplication....so it could be your battery pack discharge rate that limit, if you haveore Amp, you reduce the sag and so you get a higher Discharge C
Kelly recommend to get 2 to 3 time the power motor rated.....72V*55A =4kW rated should be ok for a 1500/2000w rated motor....
Correct me if I m wrong...ask gindc why is truesin is more powerfull and faster with less amp
dan974
1 kW
dan974
1 kW
space4dreamz said:
I think Doc was refering to the undervoltage software setup......
dan974
1 kW
Bluefang said:
torque : throttle = I(amp command) so FT give you fastest acceleration, but you loose to speed @ end
speed : give a voltage command, so try to reach the speed you ask @ throttle give you max speed (slow ramp)
balanced : a mix of the two : try to reach the speed you ask @ Throttle with and theTorque the same : FT give you max torque to reach max speed; 50% throttle will give you half the max torque to reach the speed ask
crossbreak
1 MW
dan974
1 kW
yep mayeb you can add +15% as they're underrated :wink:crossbreak said:
crossbreak
1 MW
ok thanks. If they are as good as claimed i'll buy another one in the near future so i can do a side by side FT comparison. FT should make no difference with both controllers configured for the max power. The we can verify
Bluefang
10 kW
I have a pair of Kelly KEB72801 controllers. They power a hub monster at 32kw peak. They are only rated for 8kw and up to 72V but i am using them at 20S so 84V and each one is drawing 16kw. Both controllers run thru a calibrated shunt with a CA V3 giving readings. It does not matter what amps you see on the CA etc, all you should look at is the KW and compare that to the controllers rating.
The balanced setting, dont really care what the explanation of the settings is, its faster accellerating then both speed and torque in a few quick tests i did after someone mentioned it was better to me, Fany said torque would be fastest, I tried Balanced and it was faster. Speed has a AWESOME hit of power after 20% of speed
. Also Boost function should be disabled unless you actually have a button to activate and want to restrict your bike. It does not give any extra power it just limits you normal power.
The off the line power of a Kelly controller does not even compete with a Lyen or greentime controller. I would guess this is because they are controlled better and are always power limited. Where ebike controllers usually have block time where the controller can ofter put out 3-5 times its normal power, this comes at the cost of reliability.
The balanced setting, dont really care what the explanation of the settings is, its faster accellerating then both speed and torque in a few quick tests i did after someone mentioned it was better to me, Fany said torque would be fastest, I tried Balanced and it was faster. Speed has a AWESOME hit of power after 20% of speed
. Also Boost function should be disabled unless you actually have a button to activate and want to restrict your bike. It does not give any extra power it just limits you normal power. The off the line power of a Kelly controller does not even compete with a Lyen or greentime controller. I would guess this is because they are controlled better and are always power limited. Where ebike controllers usually have block time where the controller can ofter put out 3-5 times its normal power, this comes at the cost of reliability.
dan974
1 kW
NEVER USE boost on the keb, it give you 100% power and desactivate throttle.... It kicked my ass on the ground... I misszd read the manual, it 100 % not 0~100% imax..
I forgot that Fany told me it is for elevator application.... Variable approach with throttle then full power....
After having my keb running at 20s I now make it run at 21s max limit for the 90v given by it
I forgot that Fany told me it is for elevator application.... Variable approach with throttle then full power....
After having my keb running at 20s I now make it run at 21s max limit for the 90v given by it
Just saw this thread. I have kelly kbs4810 with AFT Mid Drive and 48v 12s of lipo. I hit 60 amps the other day. I think these controllers are awesome. I haven't changed any settings other than throttle response. Amazing for their small size. It came with my aft/cyclone motor.
Edit: Sorry, meant 60amp with my AFT mid drive. You can see in video below.
[youtube]kJRbGSiDCqc[/youtube]
Edit: Sorry, meant 60amp with my AFT mid drive. You can see in video below.
[youtube]kJRbGSiDCqc[/youtube]
crossbreak
1 MW
I could test the Kelly now. Does not work as expected. The most reason i bought it was that it has "Torque Mode Throttle" available in Setup. But that is no real Torque mode Throttle. It's a Speed throttle. It's not as twitchy as the Infineons and X8m06c Speed throttles, but still no torque throttle 
An Infineon with a good throttle mapper/tamer isn't worse than this.
BUT what concerns me most: If i let go the throttle (zero throttle) after Full Throttle , it does NOT REDUCE TORQUE INSTANTLY!!! WTF???!?!? Even the cheapest controllers response faster on Zero Throttle
I programmed it to FASTEST Throttle Response. What a waste of time
EDIT: I failed, just had to deactivate "smooth setting" in setup.. it's awesomely fast throttle response now
[youtube]xC2dfl62KZ4[/youtube]
An Infineon with a good throttle mapper/tamer isn't worse than this. BUT what concerns me most: If i let go the throttle (zero throttle) after Full Throttle , it does NOT REDUCE TORQUE INSTANTLY!!! WTF???!?!? Even the cheapest controllers response faster on Zero Throttle
I programmed it to FASTEST Throttle Response. What a waste of time
EDIT: I failed, just had to deactivate "smooth setting" in setup.. it's awesomely fast throttle response now
[youtube]xC2dfl62KZ4[/youtube]
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