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European UMC adapter resistor coding

Discussion in 'Wiki' started by widodh, Jan 10, 2014.

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The first post in this thread is a WikiPost, and can be edited by anyone with the appropriate permissions.
  1. widodh

    widodh Model S 85kWh

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    #1 widodh, Jan 10, 2014
    Last edited by pjw65: Nov 10, 2017
    The European Universal Mobile Connector (UMC) comes with a couple of different adapters:

    * Schuko (13A, 3kW)
    * CEE Blue 1-phase (32A, 7kW)
    * CEE Red 3-phase (16A, 11kW)

    The image below shows the CEE Red 3-phase 16A adapter plugged in to a CEE outlet. This allows charging up to 11kW (3-phase 16A).

    tesla_model-s_eu_umc_in_red_cee.jpg

    The adapter without being attached to the UMC.

    tesla_model-s_eu_umc_cee_adapter.jpg

    Based on the adapter plugged in the UMC decides how the pilot signal towards Model S is set. Based on the adapter used Model S will use a different maximum current.

    At the back of the adapter there are 7 connections:

    tesla_model-s_eu_umc_connector.jpg

    A resistor between 6 and 1 (Ground) tells the UMC which adapter is plugged in. A overview of all the adapters can be found below.

    The connector layout per adapter:

    13A Schuko
    1. Ground
    2. Neutral
    3. L1
    4. L1
    5. L1
    6. Pilot
    7. Not Connected

    Resistor between 1 (Ground) and 6 ("Pilot"): 100kΩ

    16A 3-phase Red IEC 60309 CEE (as displayed above)
    1. Ground
    2. Neutral
    3. L3
    4. L2
    5. L1
    6. Pilot
    7. Not Connected

    Resistor between 1 (Ground) and 6 ("Pilot"): 51kΩ

    32A 1-phase Blue IEC 60309 CEE
    1. Ground
    2. Neutral
    3. L1
    4. L1
    5. L1
    6. Pilot
    7. Not Connected

    Resistor between 1 (Ground) and 6 ("Pilot"): 20kΩ

    10A UK plug
    1. Ground
    2. Neutral
    3. Not Connected
    4. Not Connected
    5. L1
    6. Pilot
    7. Not Connected

    Resistor between 1 (Ground) and 6 ("Pilot"): 200kΩ
     
  2. Olav69

    Olav69 New Member

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    Modify red Tesla adapter

    What would happen if you modify the red Tesla adapter so that the resistance between 1 (Ground) and 6 ("Pilot") becomes 20k ohm?

    Will the UMC signal to Tesla that it offers 32A 3-phase? Will the charger in the Tesla accept this and draw 32A 3-phase?

    Does the Tesla in any way detect what UMC it is connected to?
     
  3. widodh

    widodh Model S 85kWh

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    Good question. I think it will draw 32A 3-phase then.

    BUT, I don't think the wires in the UMC are capable of 3x32A!
     
  4. LuckyLuke

    LuckyLuke Model S P85DL

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    It will probably charge with 32A total then, since the blue adapter bridges L1-L2-L3 , so each internal charger circuit will take 10.66A like it would when the blue adapter is used.
    That or some serious fireworks ;)
     
  5. SteveWest

    SteveWest 2012 Roadster 2.5, 2014 P85+, 2015 P85D

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    Surely when supplying 32A single phase, all 32A return through the neutral line? Are you saying the Neutral is rated for 32A but L1-3 are only rated for 16A?
     
  6. widodh

    widodh Model S 85kWh

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    Good question. I think so now you say it.
     
  7. Johan

    Johan Funds for M3 secured. Contingent on wife aproval.

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    32A single phase is only for IT nets where neutral line is non-existent. 32A is between L1-L2 or L1-L3 or L2-L3, depending on how the blue outlet is wired. I believe.
     
  8. medconn

    medconn New Member

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    I know that this is an ancient thread, but as it's the best source of data on the resistor values I can find on the web, I thought I'd update it to cover the UK 13A socket adapter, which is unfortunately down-rated to 10A :-(

    The resistor value for such an adapter is 200kΩ, and L3/L4 are (unlike the description for the Schuko), not connected, giving, overall:

    10A UK plug
    1. Ground
    2. Neutral
    3. Not Connected
    4. Not Connected
    5. L1
    6. Pilot
    7. Not Connected

    Resistor between 1 (Ground) and 6 ("Pilot"): 200kΩ

    If anyone with suitable permissions would like to edit this into the first post, then please do so!
     
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  9. widodh

    widodh Model S 85kWh

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    Thanks! I can no longer edit the first post, but the information is still relevant. Thanks!
     
  10. emir-t

    emir-t Member

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    Reviving an old thread but what is the difference between bridging 3-4-5 on all L1 for Schuko and blue adapter vs not connecting 3-4 and connecting 5? I always thought bridging was the best way b/c when the resistor says 32A it draws 10,6A each for a total of 32A. I always assumed it had some internal cicuit that prevented each pin pulling 32A or 16A unless the L's had an angle difference of 120 degrees a.k.a. three phase. I would appreciate someone explaining.

    Thanks.
     
  11. thanar

    thanar Member

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    #11 thanar, Jul 18, 2018
    Last edited: Jul 18, 2018
    This is exactly the thread I was looking for...

    There's a stranded model X owner from Norway who's being towed to my place for charging and needs power for 126km to reach the closest type 2 public charger. If he charges over Schuko, it will be 8.4hours (assuming he'll be driving slow and manages 300Wh/km from now on). I also have a 56mm CEE 3phase plug at 16A (Teslas have already charged at 3x16A numerous times with the proper adapter), but he only got the blue single phase 32A mobile connector adapter with him. Any way to modify the adaptor in order to support 3 phase charging?

    I was thinking opening the blue adapter, hard wiring phases/neutral/ground and adding a 100kΩ resistor between pins 1 and 6. I suspect that would do the trick. Can the blue commando adaptor be opened?
     
  12. .jg.

    .jg. Member

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    Would it not be easier to buy a 32A single phase blue commando socket and some suitable cable (4mm+ cores) locally, then wire it to a separate 32A breaker? You wouldn't risk destroying the Tesla Blue adaptor and you would have 32A single phase supply for some future use. He would be able to charge at about 35 kmh => under 4 hours charging.
     
  13. sidmini

    sidmini Member

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    Looks pretty well moulded rubber to plastic.
     
  14. thanar

    thanar Member

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    The blue adapter does not seem to open. Also unfortunately, I do not have a 32A breaker out in the open, so I have switched the red plug on my cable to a blue one (using only one phase) and manually charging at 19A, which seems to work so far...
     
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