TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Open EVSE with Type 2 connector problem

Discussion in 'Europe' started by widodh, Oct 11, 2012.

  1. widodh

    widodh Model S R231 EU

    Joined:
    Jan 23, 2011
    Messages:
    4,815
    Location:
    Middelburg, The Netherlands
    Hi,

    I'm installing my Open EVSE in my shed this evening and I ran into the issue that the Roadster won't start the charge.

    Some pictures of how I installed it can be found on my blog: Widodh Installing the socket of my Open EVSE

    And other can be found here: Index of /ev/tech/charging/open-evse

    Then I plug the Roadster into the Type 2 socket (with my adapter) the EVSE jumps to "EVSE Connected".

    The Roadster on his turn says "Connect Power Cable" and the Ring stays white.

    I connected this:

    - Control Pilot from socket goes to PILOT on the EVSE
    - Proximity Pilot from socket goes to GND on the EVSE

    When the Roadster is connected I measure a voltage of -6.98 ~ -7.00V between the Pilot and GND. I tried to measure the resistance, but that gave me a diode failure message on the Open EVSE LCD.

    What is going wrong here? Is the voltage to low between the Pilot and GND? According to http://code.google.com/p/open-evse/wiki/J1772Basics it should be -12V?

    I'm using the 1.0 firmware without the Advanced Power Supply at the moment, will enable the ADVPWR features later on.

    Could it be that my cable between the socket and EVSE is to long? I'm using CAT6 for this and the cable is about 8 meters (24ft) from the socket to the EVSE. Although the voltage on the socket between Pilot and GND is the same as at the EVSE.

    Some insight on this would be appreciated!
     
  2. Chris1howell

    Chris1howell Member

    Joined:
    Oct 28, 2011
    Messages:
    152
    Location:
    Los Angeles, California, United States
    Hi widodh.

    What version of the board do you have? Boards before v7 need r1 changed from 1k ohm to 650 ohm for.compatibility with the Tesla Roadster.

    Chris
     
  3. widodh

    widodh Model S R231 EU

    Joined:
    Jan 23, 2011
    Messages:
    4,815
    Location:
    Middelburg, The Netherlands
    I think I have v6?

    http://code.google.com/p/open-evse/wiki/OpenEVSE_boards

    I ordered on June 18th this year:
    - OpenEVSE board
    - Advanced Power Supply

    So I assume that I have v6? Just swapping R1 with a 650ohm should fix it?
     
  4. EV_de

    EV_de Model SP10/XP9 EU ZOE#47

    Joined:
    Jun 11, 2009
    Messages:
    415
    Location:
    Germany, IN
  5. widodh

    widodh Model S R231 EU

    Joined:
    Jan 23, 2011
    Messages:
    4,815
    Location:
    Middelburg, The Netherlands
    #5 widodh, Oct 11, 2012
    Last edited: Oct 11, 2012
  6. widodh

    widodh Model S R231 EU

    Joined:
    Jan 23, 2011
    Messages:
    4,815
    Location:
    Middelburg, The Netherlands
    #6 widodh, Oct 18, 2012
    Last edited: Oct 18, 2012
    I had to order a resistor online since no store here has them.

    I just got my 2.4k resistor and added it to the board on top of R1.

    The Roadster is now charging just fine!
     

    Attached Files:

Share This Page