nater
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 2:40 pm

Good point, Dave, I suppose 12 out of 20 leaves 8 more for a soda machine. 8 Amps would chill a lot of soda.

However, think about it, if you have unlimited time and an unknown circuit, lower amperage would be nice. Of course, I'm fussy; when I charged an Ebox in my garage we set the Amps to 52 amps on the 50 amp circuit. It didn't blow and charged REALLY fast. (Yes, I have 6 gauge in the wall; about 8 feet of wire).

Nate

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TomT
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 2:48 pm

We tried a test with my friend's Volt:

Leaf L1 EVSE: Charges Leaf, not Volt.
Volt L1 EVSE: Charges both cars.
Blink L2 EVSE: Charges both cars.
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davewill
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 2:54 pm

nater wrote:Good point, Dave, I suppose 12 out of 20 leaves 8 more for a soda machine. 8 Amps would chill a lot of soda.

However, think about it, if you have unlimited time and an unknown circuit, lower amperage would be nice. Of course, I'm fussy; when I charged an Ebox in my garage we set the Amps to 52 amps on the 50 amp circuit. It didn't blow and charged REALLY fast. (Yes, I have 6 gauge in the wall; about 8 feet of wire).

Nate

Yes, as I said, I definitely see the utility.
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LEAFer
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 3:26 pm

DarkStar wrote:A local EVSE manufacturer (Shorepower Technologies) has been working with a Volt owner as their EVSEs haven't been charging the Volt either. The official response is that the Volt is "monitoring additional undefined criteria not required by the standard" and they've been working with GM to implement the fix.

Interesting info ... thanks for that post.

mogur wrote:We tried a test with my friend's Volt:

Leaf L1 EVSE: Charges Leaf, not Volt.

Same symptoms (blinking/clicking) ?
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garygid
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 10:07 pm

Well, we KNOW the Nissan L1 EVSE is NOT fully to J1772 specifications.

But, the AV L2 EVSE does not have the "diode check" either, and the Volt works with the AV EVSE.

So, something else ... ?
Last edited by garygid on Tue Apr 19, 2011 11:28 am, edited 3 times in total.
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Re: L1 EVSE: Interchangeable ?

Tue Apr 19, 2011 9:51 am

The problem is not the -12v. The Nissan/Panasonic L1 EVSE delays putting out power once the Pilot is acknowledged until it performs an internal self test. This test takes approximately 3 seconds and you can normally hear the clicking of the relays while this test is underway. The problem is the Volt seems to "give up" right before the EVSE completes it's test and recycles the Pilot, which starts the test all over again. This continues in an endless loop and the Volt never starts charging.

The proper fix would be to correct this in the Volt's software, because the EVSE is technically allowed to delay. This is not limited to the Nissan/Panasonic unit, several EVSE's on the market also delay.

I might be able to implement a work-around inside the EVSE to make it compatible with the Volt. Testing is underway currently, I'll let everyone know the outcome.

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Re: L1 EVSE: Interchangeable ?

Tue Apr 19, 2011 10:57 am

Thanks, Ingineer, for that informative update :P
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06Jun2013 Status [28.5 months][34,173 miles][11 bars]
Lost CapacityBar 6/6/13 @34,173 miles while in LEAF Battery Monitor: 83.41%, 71.4F (avg); cool overnight;

DarkStar
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Re: L1 EVSE: Interchangeable ?

Tue Apr 19, 2011 12:03 pm

Ingineer wrote:The problem is not the -12v. The Nissan/Panasonic L1 EVSE delays putting out power once the Pilot is acknowledged until it performs an internal self test. This test takes approximately 3 seconds and you can normally hear the clicking of the relays while this test is underway. The problem is the Volt seems to "give up" right before the EVSE completes it's test and recycles the Pilot, which starts the test all over again. This continues in an endless loop and the Volt never starts charging.

The proper fix would be to correct this in the Volt's software, because the EVSE is technically allowed to delay. This is not limited to the Nissan/Panasonic unit, several EVSE's on the market also delay.

I might be able to implement a work-around inside the EVSE to make it compatible with the Volt. Testing is underway currently, I'll let everyone know the outcome.

Just because I'm curious: What does the Volt Level 1 EVSE do differently? Does it not perform a self-test or does it just wait longer before "giving up?" Thanks!
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garygid
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Re: L1 EVSE: Interchangeable ?

Tue Apr 19, 2011 12:16 pm

It is the Volt (more car than EV) that apparently gets tired of waiting for the attached EVSE to "respond" (and turn ON the power to the car).

Apparently the Voltec EVSE responds quicker than the Nissan L1 EVSE, and the Volt is just a bit too impatient for the Nissan EVSE.
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charlie1300
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Re: L1 EVSE: Interchangeable ?

Tue Apr 19, 2011 1:33 pm

tps wrote:
I hate it when that happens! :)

Shades of RS232, which also has the positive/negative thing going on, which also is often violated by certain products...


Oh Yes! Someone else remembers RS232! I'm not a total dinosaur (yet)! :o

And yes, that was a standard that violated as often as not. ;) God bless the breakout box.
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