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European UMC adapter resistor coding

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

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  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 Took a TSLA bear test. Came back negative.

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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.
     
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