Getting Rid Of Automatic Brake After Going Over Speed Limit On H5 Series (tohoku High Speed Line)

Discussion in 'General Discussion' started by pasictarik10, Dec 3, 2022.

  1. pasictarik10

    pasictarik10 Member

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    Hi, I was wondering if there is a way to get rid of the automatic brake activating itself after the train goes over the speed limit. I want to be able to drive more freely at the speed I please. I have not been able to find anything about this in the manual, it's probably just a button I have to push but I don't know which one-
     
  2. torfmeister

    torfmeister Guest

    Probably impossible. That's just how this train is working - it's a high tech train.
     
  3. pasictarik10

    pasictarik10 Member

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    I know but on other trains like German trains (SIFA) and French trains, you have the possibility to shut off the automatic brake activating itself when you go above the speed limit so I was wondering if and how that can be done with the H5 Series.
     
  4. 749006

    749006 Well-Known Member

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    Running this unit on the High Speed line it picks up information from the track and you cannot exceed the speed shown.
    The same applies to the TGV on a route with cab signalling - you cannot exceed the speed shown in the TVM
    On a DB Route with LZB Signalling a loco/unit so fitted will not exceed the max line speed.

    If you run a train on a route where it cannot see the signalling you can go as fast as you want
    Try running something that does not have LZB on Munchen - Avignon and you can go as fast as you like

    This is a Class 395 Javlin unit.
    Screenshot_Munich to Augsburg_48.21657-11.18948_11-45-11.jpg

    And Sifa on German trains in the Drivers Vigilance device
     
  5. pasictarik10

    pasictarik10 Member

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    Ok but for the TGV for example, there's a button I can push to deactivate the brakes applying automatically upon exceeding the speed limit, on German trains I can deactivate SIFA or whatever applies the brakes automatically once you go over the speed limit. That's why I'm surprised that apparently nothing exists on this Japanese train.
     
  6. 749006

    749006 Well-Known Member

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    SIFA does not activate the brakes when you go over a Speed Limit
    SIFA is there to check the driver is alive as he has to reset it at an interval if you are going at 40kph or 300kph
    https://en.wikipedia.org/wiki/Sifa
    In TSC you can Isolate SIFA - the same way you can isolate DSD on UK Trains

    PZB is the Signalling System that checks the speed of the train and if the signals are clear or it applies the brakes
    In TSC you don't have to use PZB and you can go as fast as you want

    EXCEPT
    LZB is used on high speed lines and a display in the cab tells the driver how fast he can go and you cannot exceed that.
    So if you have a German train the LZB will switch on automatically on a High Speed section - you cannot override it.

    TVM is the French signalling system used by the TGV and you cannot disable it

    If you want to drive this Japanese train above the speed limit the drive it on a route that is not in Japan
    The Author of the train has not built in a system to disregard the signalling - because that is how it is in real life.

    If you wish to go faster than the line speed use the train on a different route to the one it was built for.
     
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  7. pasictarik10

    pasictarik10 Member

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    I don't know exactly what they are called but I know that on French routes with the TGV, you can disable the automatic braking after going over the speed limit. I know because I've done it before.
     
  8. 749006

    749006 Well-Known Member

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    The difference is DTG Routes and trains are made for everyone.
    A friend has difficulty hearing the Beep-Beep of the DSD on UK Trains and you can disable that in most types.

    The H5 was built for people who wish to run their trains correctly so you cannot disable the brakes for speeding
     
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