[darwins]

It sounds like you have got the idea. On normal routes less power available means the acceleration of the loco will be less. If this was not limited by on board control the results might be a damage to overhead line, reducing line voltage, tripping circuit breakers or otherwise having less power available for other trains sharing the route.

Having a selector in OR is interesting as previously we had to use two different eng files. Similar cases are passenger / freight gear ratios Passenger / Goods or Yard / Main Line and different braking systems - Air Goods / Air Passenger / Light Engine / Vacuum Braked / Vacuum Unbraked.
Choices
I thought there was also a Trello card for allowing options in eng files but I can't find one.

[Laci1959]

Quote

If this was not limited by on board control the results might be a damage to overhead line, reducing line voltage, tripping circuit breakers or otherwise having less power available for other trains sharing the route.

Thanks. I just understood. Thus, the switch is now legitimate.

[Weter]

Hello Darwin, Laci and all others.
First, I think, that moving on higher speed, indeed allows to draw more current from each point. (contact wire at this point will not be heated during too long time)
As like standing, or slow moving loco owe to use all of its pantos for dividing current, what prevents wire overheating, (causes the risqué of deformation or even burning of the wire)
Also, it might be different contact "ski" pressure on wire demanded, respecting of speed.
As well, different circuit-breaker threshold setting, as Laci noted.
I think, not sub-stations themself, but points of power-supply (where the power cable connected to contact wire)

Second.
Darwin have just gave to me an idea: if those "selectors" application is not limited to electric system, we could use that for pneumatic system, like braking modes (changing normal BP pressure for pass/goods or plain/mountain service) as well EP/automatic airbrakes
or for mechano-hydraulic transmissions (shunt-mainline mode)
Even for signaling/TCS switching/mainline mode, or signaled/coded routes.

[Serana]

About the selection of the HSL mode:


On high speed lines in France, UK, Belgium and Netherlands, the height of the overhead line is fixed to 5.08 m. This allows to activate a pantograph stop on the train that blocks the pantograph if it goes too high.
This can help not damaging the overhead line when the train is at high speed and some crosswind move the overhead line sideways a bit.
To activate or deactivate the pantograph stop, you have to lower the pantograph.

On TGV, this also change the power limit indeed. On conventional lines, you are limited to 7200 kW and, on HSL, you are limited to 9280kW (value for the most recent TGV).

 keystoneaholic, on 25 November 2021 - 03:41 AM, said:

Would it be possible to add additional voltage positions for 3000 volts DC and 750 volts DC?

The voltage selectors can be so different for each type of rolling stock. In order to take into account the different positions, you will need a C# script for that.
In that script, you will be able to set any voltage you want.
For 750 VDC, you can consider in the engine configuration that pickup shoes are a type of pantograph.

 Weter, on 25 November 2021 - 02:14 PM, said:

Old-fashioned locomotives often had selectors for choosing motor groups arrangement (serial, mixed, parallel) or excitation field weakening.
Some functions could be combined with throttle handle, or we're automatically adjusted.

For this, it will be a bit complicated since we currently don't use an accurate DC motor model. The different couplings and excitation field weakening will only be possible once this model is available. We would have to model also the rheostat.

[Laci1959]

 Weter, on 26 November 2021 - 09:39 PM, said:

Second.
Darwin have just gave to me an idea: if those "selectors" application is not limited to electric system, we could use that for pneumatic system, like braking modes (changing normal BP pressure for pass/goods or plain/mountain service) as well EP/automatic airbrakes
or for mechano-hydraulic transmissions (shunt-mainline mode)
Even for signaling/TCS switching/mainline mode, or signaled/coded routes.

Hello.

ICIK's unofficial OR already knows this. There is a train derailleur and a load changer for the brakes. The former sets the operating speed of the brake.
In the window after F9, click on the car to display the list. Highlighting these settings in a different color. Its operation is almost similar to the EU07 Maszyna program. Only there can you get the train with random settings, and you have to check the cars and check the setting before you leave.

[Weter]

Bonjour, Cedric.
I see, but may I ask: yet in MSTS, while accelerating with Series 7000 EMU, I've noticed the jerks of ammeter's needle while reaching some speeds.
That looked very close to reality, simulating automatis field weakening. What was that? Did ORTS inherit that functionality?

On more modern contractor locomotives (70-th) that transitions were automatic. So, if one day, group switching will be implemented-that would be good.
Indeed, in case of VFD semiconductor drives era locomotive models, it becomes inactual.

[cjakeman]

 darwins, on 26 November 2021 - 02:02 AM, said:

Having a selector in OR is interesting as previously we had to use two different eng files. Similar cases are passenger / freight gear ratios Passenger / Goods or Yard / Main Line and different braking systems - Air Goods / Air Passenger / Light Engine / Vacuum Braked / Vacuum Unbraked.

It seems this proposal has generated a lot of interest.

What might the selectors look like in the CVF file? Could we see a proposed sample?

[cjakeman]

 Weter, on 28 November 2021 - 10:42 AM, said:

Hi, Chris.
multi (2- 3- ...) states or levers.

Could be.

Let's see what Serana has in mind.

[Serana]

It depends on how many states the selector will have.

A simple two position (pantograph up/pantograph down) selector will use TwoState.
A triple state selection will use TriState and for more positions, you will use MultiState.

What will change for these selectors will be the new cabview control types.
For example, ORTS_PANTOGRAPH_SELECTOR or ORTS_VOLTAGE_SELECTOR...


Or if we want to be generic : ORTS_GENERIC_SELECTOR_1, 2, etc.
The naming of the selector could then be changed in a similar way as what is done in the TCS scripts (for the ORTS_TCSxx cabview controls).

[cjakeman]

 Serana, on 09 December 2021 - 11:56 AM, said:

What will change for these selectors will be the new cabview control types.
For example, ORTS_PANTOGRAPH_SELECTOR or ORTS_VOLTAGE_SELECTOR...

Or if we want to be generic : ORTS_GENERIC_SELECTOR_1, 2, etc.

The Blueprint for this work has now been approved.

Sorry for the delay - I missed the post above.