mitch672
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 4:54 pm

If CC will sell you a "logic board" from one of their current CC-40's, I bet you could install it and it would work just fine. Of course it all depends on how much it costs. It's just running the relay and generating the pilot signal. If they won't sell you a logic board, I'm sure if you wait a bit, there will be some comming available soon, as the DIY's spring up to fill the need for homebrew EVSEs. I bet Gary could whip up something that would work as well :)
2012 Advanced Plug in Prius (sold)
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EVDRIVER
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 5:02 pm

mitch672 wrote:If CC will sell you a "logic board" from one of their current CC-40's, I bet you could install it and it would work just fine. Of course it all depends on how much it costs. It's just running the relay and generating the pilot signal. If they won't sell you a logic board, I'm sure if you wait a bit, there will be some comming available soon, as the DIY's spring up to fill the need for homebrew EVSEs. I bet Gary could whip up something that would work as well :)

This should be cheap and easy to do as mentioned.

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garygid
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 5:24 pm

EVSE "Logic Card" Replacement:

GFI sensor, relay trip, and retry
Over-Temperature sensing
Brown-out & blackout detection
Error conditions, CP status & Leds
CP sensing and PWM generation
Error states
State transition Logic
Over-Current monitoring
EM noise issues
Off, On, Reset functions
Self-test functions
Any display functions

I am probably forgetting some things.

Replacing all of that, really well done, is non-trivial. Making a square wave generator is trivial.

Apparently the DIY EVSE Project people have been working on the control logic for some time.

Yes, I could do it, but it is a LOT of work, for very little benefit at this point.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

mitch672
Posts: 1956
Joined: Fri Apr 23, 2010 2:10 pm
Location: Boston, MA

Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 6:33 pm

garygid wrote:EVSE "Logic Card" Replacement:

GFI sensor, relay trip, and retry
Over-Temperature sensing
Brown-out & blackout detection
Error conditions, CP status & Leds
CP sensing and PWM generation
Error states
State transition Logic
Over-Current monitoring
EM noise issues
Off, On, Reset functions
Self-test functions
Any display functions

I am probably forgetting some things.

Replacing all of that, really well done, is non-trivial. Making a square wave generator is trivial.

Apparently the DIY EVSE Project people have been working on the control logic for some time.

Yes, I could do it, but it is a LOT of work, for very little benefit at this point.
For the replacement, I would just provide the pilot signal, and control the energizing relay. You are not going for UL Listing for the reworked old EVSE... Let the circuit breaker provide the overcurrent protection. No, this won't be as good as a J-1772 2010 EVSE, but then again, it doesn't have to be.
2012 Advanced Plug in Prius (sold)
I Support OpenEVSE: http://code.google.com/p/open-evse/" onclick="window.open(this.href);return false;
My Fuelly page: http://www.fuelly.com/driver/mitch672/prius-plugin" onclick="window.open(this.href);return false;
Tesla Model S 85KW Dolphin Grey VIN: 03245, delivered 1/17/2013

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EVDRIVER
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 6:35 pm

mitch672 wrote:
garygid wrote:EVSE "Logic Card" Replacement:

GFI sensor, relay trip, and retry
Over-Temperature sensing
Brown-out & blackout detection
Error conditions, CP status & Leds
CP sensing and PWM generation
Error states
State transition Logic
Over-Current monitoring
EM noise issues
Off, On, Reset functions
Self-test functions
Any display functions

I am probably forgetting some things.

Replacing all of that, really well done, is non-trivial. Making a square wave generator is trivial.

Apparently the DIY EVSE Project people have been working on the control logic for some time.

Yes, I could do it, but it is a LOT of work, for very little benefit at this point.
For the replacement, I would just provide the pilot signal, and control the energizing relay. You are not going for UL Listing for the reworked old EVSE... Let the circuit breaker provide the overcurrent protection. No, this won't be as good as a J-1772 2010 EVSE, but then again, it doesn't have to be.

+1

mitch672
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Location: Boston, MA

Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 6:51 pm

FYI, checkout this link, they are comming up with a J-1772 2010 control board, expected to be availble February 2011 (at least they say that, could be delayed a little possibly)

http://modularevpower.com/EVSE_module_development.htm

just wait for this, if CC won't sell you a logic board, and you can update your old EVSE yourself, I'm betting this will cost you a lot less than any other option availble.
2012 Advanced Plug in Prius (sold)
I Support OpenEVSE: http://code.google.com/p/open-evse/" onclick="window.open(this.href);return false;
My Fuelly page: http://www.fuelly.com/driver/mitch672/prius-plugin" onclick="window.open(this.href);return false;
Tesla Model S 85KW Dolphin Grey VIN: 03245, delivered 1/17/2013

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garygid
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 7:11 pm

The scope picture looks like the PWM timing for about a 32-amp Max-Current CP signal.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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Spies
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Location: Foster City, CA

Re: Bad news using my retrofitted EVSE with the LEAF :(

Mon Jan 17, 2011 11:16 pm

I really do appreciate all the enthusiasm around getting my EVSE to work properly with the LEAF! I have not given up hope just yet and I am gonna try to get the timers to synchronize tonight for the interim.

Trying to hit a three minute or so window reliably with one of these is not going to be easy :)

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Green Honda EV Plus 02/1998-12/2003 plate "ZERO CO2" rip, Aptera 2e #726 canceled
Blue Nissan Leaf SL loaded reserved 04/20/2010 ordered 08/31/2010 EVSE Blink #182
CARWINGS Nickname Theres233, should be Spies

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garygid
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Re: Bad news using my retrofitted EVSE with the LEAF :(

Tue Jan 18, 2011 11:45 am

Instead of that "mechanical" timer, go buy an inexpensive digital timer (something like an alarm clock that will turn on a light, only more "macho") that should be easy to set within a few seconds?
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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Spies
Posts: 837
Joined: Sat Jul 31, 2010 8:22 am
Delivery Date: 10 Jan 2011
Leaf Number: 0255
Location: Foster City, CA

Re: Bad news using my retrofitted EVSE with the LEAF :(

Tue Jan 18, 2011 12:28 pm

garygid wrote:Instead of that "mechanical" timer, go buy an inexpensive digital timer (something like an alarm clock that will turn on a light, only more "macho") that should be easy to set within a few seconds?
Are there inexpensive UL listed DPST 40 amp digital timers on the market?

Wait! Just asking this question gave me an idea though! Instead of having the inexpensive digital timer control the EVSE I could just have it control the pilot inside the EVSE. Either by controlling the power to the pilot signal generator or controlling the pilot connecting to the car. That might just be accurate enough to get the timers synched as a work around. It is still not a complete solution of course.

The more I fiddle with this though the more I think I should have just tried to order the AV unit last year and taken the 50% tax credit. I have already sunk almost $400 into retrofitting this unit with the new cable and connector and the AV unit would have been like $900 before the tax benefit. Granted the AV unit is not built anything like the EVSE I have and I was told by ClipperCreek it would work with the LEAF using the new cable and connector and for the most part it does. Sigh.

Maybe I will call ClipperCreek and see if they would still take back the connector and cable since they told me it would work and I can apply that cost to the AV unit. At least I can still get the 30% tax credit.
Green Honda EV Plus 02/1998-12/2003 plate "ZERO CO2" rip, Aptera 2e #726 canceled
Blue Nissan Leaf SL loaded reserved 04/20/2010 ordered 08/31/2010 EVSE Blink #182
CARWINGS Nickname Theres233, should be Spies

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