AndyH
Posts: 6388
Joined: Fri Apr 23, 2010 3:43 pm
Location: San Antonio

Re: Safe Display of LEAF - Lock out Motion

Tue Feb 08, 2011 12:57 pm

garygid wrote:Sorry Andy,
I thought you were saying that you were convinced that an un-powered e-nozzle just being plugged in would NOT stop the car from moving.

Since the Proximity circuit does not go back to the EVSE through the e-hose, and knowing that you are usually right, I thought that you had some "Service Manual" information that indicated that the LEAF did NOT actually USE the Proximity Detection to immobilize the car.

Apparently I misunderstood, Sorry.

I thought that I was not asking you to search for something that you had not already found.
Again, my appologies.
No worries, Gary - I was ribbing you for not checking the books. :D

Not trying to say I was convinced it wouldn't work, just trying to figure out if it Would and why. A friend has been beating me with the need to be precise, so wanted to stick with the absolute 'knowns.' ;)

I still can't point to a place in a manual that proves that the car powers the proximity line's 5V all the time, but it would have to provide power even when the car's off so that it can detect the charge plug.

Sorry to doubt your most exhaulted EE-ness. :D

tps
Posts: 1262
Joined: Sun Sep 19, 2010 7:40 pm
Delivery Date: 07 Feb 2012
Leaf Number: 18044
Location: Philadelphia, PA

Re: Safe Display of LEAF - Lock out Motion

Sat Mar 26, 2011 9:37 am

I didn't understand why, but the static LEAF at the Drive Electric event (National Harbor, Wash DC) not only had wheel chocks, but the positive terminal of the 12 volt battery was disconnected. The dash displays and the nav / audio were operating; I played with the audio system for a few minutes, playing audio from a USB stick, my Sony Walkman, etc, and the 12 battery was disconnected. If you look at the video made by Nissan LEAF specialist Kate Quigley (who BTW did a great job explaining the car to my tour group), you'l notice, when she's showing the "under the hood" section, that the positive terminal of the battery is covered with red tape and the connector/fuse block is hanging off to the side.

http://www.youtube.com/watch?v=HATpoC3yJd8

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davewill
Posts: 5083
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: Safe Display of LEAF - Lock out Motion

Sat Mar 26, 2011 10:51 am

tps wrote:I didn't understand why, but the static LEAF at the Drive Electric event (National Harbor, Wash DC) not only had wheel chocks, but the positive terminal of the 12 volt battery was disconnected. The dash displays and the nav / audio were operating; I played with the audio system for a few minutes, playing audio from a USB stick, my Sony Walkman, etc, and the 12 battery was disconnected. If you look at the video made by Nissan LEAF specialist Kate Quigley (who BTW did a great job explaining the car to my tour group), you'l notice, when she's showing the "under the hood" section, that the positive terminal of the battery is covered with red tape and the connector/fuse block is hanging off to the side.

http://www.youtube.com/watch?v=HATpoC3yJd8
Perhaps they were powering the car's electronics from the grid so they wouldn't have to worry about running the car down?
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

AndyH
Posts: 6388
Joined: Fri Apr 23, 2010 3:43 pm
Location: San Antonio

Re: Safe Display of LEAF - Lock out Motion

Sat Mar 26, 2011 12:09 pm

No doubt! If the 12V battery is disconnected, the main contactors stay open and the traction battery stays off-line. There's no power left to run the car! That even takes the charger and charge ports off-line. Hmmm...

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