garygid
Well-known member
Phil,
1. I am willing to help look at the firmware code to help make the Pilot settings selectable at Power-ON of the EVSE, if you wish.
2. A resistor put across the Pilot to Ground pins BEFORE the power-ON would seem best make Pilot selections. Different values could give the "standard" 9v, 6v, and 3v voltage values, presumably easily read by a subroutine in the existing firmware.
3. The default should be the present 12A "charge anywhere" Pilot setting, so that there are not mistakes with using the R2 where only the R1 would work (120v x 2 = 240v on 15A circuits).
4. The 6v (a 1k resistor) setting could provide the other most-useful (16A) Pilot value, for use on 20-amp circuits.
NOTE: The 9v voltage, if used at all for a Pilot setting, would be what the EVSE would see if the J1772 is ALREADY plugged into the car when the EVSE is being Powered-On. So, it might be better to NOT use this voltage for a higher-than-default current, but use it (3k ohm for 9v) to set the Pilot to 8A (see below).
5. Then, of only marginal extra value, an 18A or 20A (whatever MAX the present EVSE hardware could support) 3v, 330 ohm, setting MIGHT be provided, but perhaps NOT WORTH pushing the ratings of components in the box. Also, not useful on the present LEAF.
6. Although a reduced, "shared-circuit" (8A) value Pilot could be provided, it would get much less frequent use. Perhaps the 9v value as noted above.
7. if the Mod-L1R2 is a fairly quick mod (unseal, open, flash, test, close, test, seal, sticker), I would be willing to offer to do a couple of "workshops" for you here in southern CA to perform the R2 mod for your existing R1 customers down here, to avoid the $40 and delay in shipping the EVSE two ways.
1. I am willing to help look at the firmware code to help make the Pilot settings selectable at Power-ON of the EVSE, if you wish.
2. A resistor put across the Pilot to Ground pins BEFORE the power-ON would seem best make Pilot selections. Different values could give the "standard" 9v, 6v, and 3v voltage values, presumably easily read by a subroutine in the existing firmware.
3. The default should be the present 12A "charge anywhere" Pilot setting, so that there are not mistakes with using the R2 where only the R1 would work (120v x 2 = 240v on 15A circuits).
4. The 6v (a 1k resistor) setting could provide the other most-useful (16A) Pilot value, for use on 20-amp circuits.
NOTE: The 9v voltage, if used at all for a Pilot setting, would be what the EVSE would see if the J1772 is ALREADY plugged into the car when the EVSE is being Powered-On. So, it might be better to NOT use this voltage for a higher-than-default current, but use it (3k ohm for 9v) to set the Pilot to 8A (see below).
5. Then, of only marginal extra value, an 18A or 20A (whatever MAX the present EVSE hardware could support) 3v, 330 ohm, setting MIGHT be provided, but perhaps NOT WORTH pushing the ratings of components in the box. Also, not useful on the present LEAF.
6. Although a reduced, "shared-circuit" (8A) value Pilot could be provided, it would get much less frequent use. Perhaps the 9v value as noted above.
7. if the Mod-L1R2 is a fairly quick mod (unseal, open, flash, test, close, test, seal, sticker), I would be willing to offer to do a couple of "workshops" for you here in southern CA to perform the R2 mod for your existing R1 customers down here, to avoid the $40 and delay in shipping the EVSE two ways.