Lzb To Pzb

Discussion in 'TSW General Discussion' started by mjc83me, Sep 25, 2024.

  1. mjc83me

    mjc83me Guest

    What is the exact procedure, step by step, for switching back to PZB when at the end of an LZB section?
     
  2. aeronautic237

    aeronautic237 Well-Known Member

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    When the end of the LZB section is approaching, a light with the word 'Ende' will start flashing (or the word 'Ende' in a yellow box appears on the MFD) which must be acknowledged using PZB Release (the middle one) in good time. If you have acknowledged it in good time, the light will become steady.

    Then you wait for LZB to die.

    Not sure how GNT would affect this.
     
  3. Cael

    Cael Well-Known Member

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    I'm doing the following:
    1. When the Ende light starts flashing, acknowledge with the PZB Release. The light should stop flashing
    2. Turn off the AFB
    3. Set the AFB speed limit to 0
    4. Wait until the train is out of the LZB zone
    5. Set the AFB to the desired speed
    6. Turn on the AFB
     
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  4. deeuu#6908

    deeuu#6908 Well-Known Member

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    The AFB part is important, (although I am not sure you have to turn it off?), because the AFB won't work without you returning it to zero first.
     
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  5. Trainiac

    Trainiac Well-Known Member

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    To add to this, once LZB ends PZB will go back to normal (no acknowledgment needed) unless you have a signal to acknowledge. And the GNT sections end and begin well away from the LZB sections so again theres nothing to acknowledge, GNT ends and begins silently
     
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  6. heliomass

    heliomass Active Member

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    Thanks, I was wondering the correct procedure to handle AFB when coming out of LZB. This is really helpful!
     
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  7. OnlyMe1909

    OnlyMe1909 Well-Known Member

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    If I'm not mistaken, you can continue to use AFB untill PZB kicks in. Also, it is not needed to turn AFB off and back on, you just need to reset the AFB Speed handle. So the way I do it is:

    1 When Ende starts flashing: acknowledge with PZB release
    2 start taking notice of signals and upcoming speed restrictions
    3 wait untill LZB actually ends and PZB takes over. Then:
    4 set power handle to 0
    5 Reset AFB (set AFB speed-handle to 0 and then set AFB speed-handle to required speed => no need to turn it off and back on)
    6 turn power handle back on
     
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  8. stujoy

    stujoy Well-Known Member

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    I’m assuming you can move the AFB lever fast enough with a mouse on PC to prevent AFB applying the brakes. It takes an age to do it with a controller, either with the power buttons or by grabbing it and moving it in the cab, both too slow, which results in an AFB brake application during the process and a big reduction in speed. Turning AFB off before doing it seems to be the only way to prevent a brake application.
     
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  9. OnlyMe1909

    OnlyMe1909 Well-Known Member

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    I usually grab the lever, yank it to 0 and instantly back to the speed I want. You do get a bit of a brake application, but imo it’s not so bad
     
  10. meridian#2659

    meridian#2659 Well-Known Member

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    Here to add, after Lzb Ende procedure is acknowledged, pzb starts to recognize the magnets, even while the train is still is in LZB überwachung.

    Means ignoring the "pzb wachsam" at the signals can cause nasty indusi brakes after lzb guidance has ended.
     
    Last edited: Sep 25, 2024
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  11. aeronautic237

    aeronautic237 Well-Known Member

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    Yes. It's basically instant. I can see that this would be an issue with consoles, since mice don't work on it.
     
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  12. March Hare

    March Hare Well-Known Member

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    I was glad this thread came up because I only recently started using LZB and PZB, and I think I have the hang of it (it isn't the scary thing I used to think it was). But literally every time PZB kicks in, the brakes apply despite acknowledging/releasing. This must be why; I didn't know you had to turn off the AFB, and quickly. Thanks.
     
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  13. noir

    noir Well-Known Member

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    You should be able to suppress the AFB brakes (while resetting it) by putting electrodynamic brake lever to 1A. Although I am not sure how consistent this is across the TSW locos.

    LZB should drop you in front of a main signal after a brake curve that corresponds to the aspect shown on it, so that should not be a too big problem in practice.
     
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  14. meridian#2659

    meridian#2659 Well-Known Member

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    Its not a problem at all, just a small detail which can be overlooked.
     

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