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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.



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Unread 12-24-2007, 05:40 AM   #1
Gone Wild
 
Join Date: Dec 2007
Location: Central Florida
Posts: 320
Default First Log: New Controller

Here is a very quick log... can you all tell if something is off? Specifically, take a look at battery voltage at 100% throttle and output current... shouldn't the output be higher?

TimeStamp,ThrottlePos,DiodeTemp,BatteryVoltage,Out putCurrent,BatteryCurrent,ErrorFlags
12/23/07 11:44:42.889 0,22.2,38.3,0.0,0.0,
12/23/07 11:44:43.880 0,22.2,38.3,0.0,0.0,
12/23/07 11:44:44.891 0,22.2,38.3,0.0,0.0,
12/23/07 11:44:45.883 0,22.7,38.5,0.0,0.0,
12/23/07 11:44:46.914 0,23.2,38.3,0.0,0.0,
12/23/07 11:44:47.886 0,22.2,38.3,0.0,0.0,
12/23/07 11:44:48.887 20,22.2,37.4,211.0,41.4,
12/23/07 11:44:49.929 20,22.7,37.5,163.0,32.0,
12/23/07 11:44:50.900 24,21.7,37.2,182.0,44.3,
12/23/07 11:44:51.922 24,21.7,37.3,139.0,32.7,
12/23/07 11:44:52.893 22,21.7,37.6,62.0,13.6,
12/23/07 11:44:53.934 23,21.7,37.6,86.0,19.9,
12/23/07 11:44:54.896 22,21.7,37.6,57.0,12.7,
12/23/07 11:44:55.907 28,22.2,37.5,96.0,26.7,
12/23/07 11:44:56.929 34,22.7,37.0,120.0,40.5,
12/23/07 11:44:57.900 34,22.7,37.2,105.0,35.8,
12/23/07 11:44:58.932 31,22.7,37.7,4.0,1.2,
12/23/07 11:44:59.903 33,22.7,37.6,52.0,17.1,
12/23/07 11:45:00.935 33,22.7,37.6,14.0,4.7,
12/23/07 11:45:01.906 37,22.7,37.3,81.0,29.9,
12/23/07 11:45:02.947 100,23.2,32.9,264.0,264.0,
12/23/07 11:45:03.909 100,22.7,33.3,230.0,230.0,
12/23/07 11:45:04.920 100,23.7,33.4,220.0,220.0,


Not sure if this matters - but this was immediately following the first charge after adding water to the batts....
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Unread 12-24-2007, 08:44 AM   #2
nimda
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Join Date: Jun 2007
Posts: 12,913
Default Re: First Log: New Controller

Your battery voltage seems a bit low at 0 throttle. 38.3 volts is too low. A 36 volt pack should be around 40-42 volts just sitting. Other than that everything looks ok.
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Unread 12-24-2007, 09:08 AM   #3
Gone Wild
 
Join Date: Dec 2007
Location: Central Florida
Posts: 320
Default Re: First Log: New Controller

Here is a log from someone on BU using the exact same controller...

Look at the output - albeit he may be running 48volts.......
http://server1.buggiesunlimited.com/...&highlight=log



TimeStamp,ThrottlePos,DiodeTemp,BatteryVoltage,Out putCurrent,BatteryCurrent,ErrorFlags
08/05/07 14:03:51.062 0,37.9,48.1,0.0,0.0,0x00
08/05/07 14:03:51.140 0,37.4,48.1,0.0,0.0,0x00
08/05/07 14:03:51.218 0,37.4,48.1,0.0,0.0,0x00

this is when i floored it!
08/05/07 14:04:08.828 29,37.4,44.3,330.0,97.1,0x00
08/05/07 14:04:08.906 36,37.9,42.6,405.0,147.7,0x00
08/05/07 14:04:09.000 43,37.9,40.9,485.0,207.3,0x00
08/05/07 14:04:09.078 50,37.4,39.0,530.0,264.0,0x00
08/05/07 14:04:09.171 58,37.9,37.1,575.0,331.5,0x00
08/05/07 14:04:09.250 65,37.9,35.3,615.0,397.9,0x00
08/05/07 14:04:09.328 72,37.9,33.5,650.0,466.5,0x00
08/05/07 14:04:09.421 78,37.4,32.0,675.0,524.1,0x00
08/05/07 14:04:09.500 82,37.4,32.2,640.0,527.1,0x00
08/05/07 14:04:09.578 87,38.3,30.3,650.0,563.3,0x00
08/05/07 14:04:09.671 92,37.4,30.2,660.0,605.6,0x00
08/05/07 14:04:09.750 99,38.8,30.1,593.0,586.0,0x00

and to add, that the battery was near being dead
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Unread 12-24-2007, 09:44 AM   #4
nimda
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Join Date: Jun 2007
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Default Re: First Log: New Controller

The output is fine...it will only draw what you need. If you and your buddy go for a ride and log it the output amps will go up.

The controller only put out 220 or so amps because thats all the motor needed at the time. Go pull a steep hill and log it and you will see what I mean.
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Unread 12-24-2007, 10:32 AM   #5
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Join Date: Dec 2007
Posts: 391
Default Re: First Log: New Controller

Not claiming to be an expert here but just wanted to clarify the situation here to see if it will stimulate some others. If I understood some of your othe threads this controller is not on the carts listed in your signature but for a brand new (2007) cart you are working on? Thought I read on here that the batteries take several charges to reach maximum efficiciency.
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Unread 12-24-2007, 02:04 PM   #6
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Join Date: Dec 2007
Location: Central Florida
Posts: 320
Default Re: First Log: New Controller

No - this controller is in the 2002 PDS with the relatively new Trojans.

Pulling a steep hill - the amps went well past 500....

I spent almost an hour with Alltrax... basically - they said that all systems were basically a go - and that the speeds were good. I tuned it a bit to their specs...

Torque is the big gain here... 1 person in the cart on flat ground versus stock with a chip will be almost the same... 2 people are a completely different story.

I need to get some more wheel time on this. I'll tell you something though -I see 48 volts in my crosshairs!
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