Wiadomości

1

EU07 Simulator English forum / Odp: Low FPS on high end computer

« dnia: 18 Lutego 2024, 22:35:26 »

Reducing AA from 8x to 2x helped a lot. Went from 40 FPS to 90 FPS :) , it seems that the actual bottleneck is likely engine. Seeing CPU loaded to 9% and GPU to 47 % aids to this theory. Or possibly the OpenGL might like more nvidia GPUs, I remember that 12 years ago I had hard times to run early Maszyna releases on ATI HD 5870

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EU07 Simulator English forum / Low FPS on high end computer

« dnia: 18 Lutego 2024, 19:25:14 »

Hello there,

I have recently upgraded my computer to this state (List of crucial parts):

CPU: Ryzen 9 7950X
MB: ASUS ROG STRIX X670E-A
Graphics: AMD RX 7900 XTX (ASUS TUF Gaming)
RAM: 64GB kit - G.Skill Trident Z5 RGB 64GB (2x32GB) DDR5 6000 CL30

And surprisingly FPS increase compared to previous GPU - AMD Vega 56 in Maszyna is barely noticeable. In some sceneries like Drawinowo do wieczora I am even getting below 60 FPS on 1920x1200 using those settings as seen in attached files

What is the root cause of such a small performance?

Best regards,
DB

3

EU07 Simulator English forum / Odp: Why trains must start with two pantographs raised?

« dnia: 04 Lipca 2023, 20:24:26 »

Actually also in CZ default pantograph choice is rear one. One of the reasons is to reduce friction as front pantograph tends to be more pushed by air upwards. Under normal circumstances this is not necessary and this only contributes to faster pantograph wear. Secondly if there is pantograph accident it is less likely that rear pantograph damages also front one compared to vice versa scenario.

Front pantograph is being used only when:

1) Behind your locomotive is another locomotive. If there was risen rear pantograph, potentially glowing shards could damage front glass of the locomotive.
2) Behind your locomotive is wagon loaded with cars. Logic is same as in scenario 1
3) Driving through strong rain. Extra contact pressure is less harmful for pantograph than violent arcing.
4) Rear pantograph does not support current voltage system or is damaged. Some Czech classes 380 have contact shoe specialised either for AC system or for DC ones.

Only trams if having option to use single pantograph use front pantograph because in past there used to be electric contacts on overhead lines, which were used to change switch direction and when rear pantograph would be used, then the switch would get locked and ignored command dictated by current uptake from rear pantograph. Secondly in street traffic it is more practical to have pantograph as close as possible to driver so driver can easily tell if they are already in front of / near / past section insulator. With rear pantograph this can be very tricky.

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EU07 Simulator English forum / Odp: Bug: Drawinowo scenario cannot be accessed

« dnia: 27 Czerwca 2023, 12:18:12 »

Super :) , it is now working perfectly

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EU07 Simulator English forum / Bug: Drawinowo scenario cannot be accessed

« dnia: 27 Czerwca 2023, 10:54:37 »

Hello Maszyna community,

After upgrading to 22.03 MaSzyna I noticed every time when I attempt running Drawinowo scenery using Starter I always get Memory violation excpetion and I cannot use this scenery. Impacted is only this scenery other ones including drawinowo do wieczora are running perfectly. Sadly I have not found any useful information in the log, only the screenshot. I am also attaching my PC specs. It was happening also on my older setup with same GPU but slower CPU (Intel i7 4770K running 4.2 GHz and DDR3 4x4 GB RAM 1600 MHz ... 16 GB total)



MB: ASUS ROG STRIX X670E-A
CPU: Ryzen 9 7950X
RAM: Apacer PANTHER 32 GB KIT DDR5 6400MHz CL32 RGB (running two pairs as 4x16 GB at 5800 MHz with stability verified in memtest86)
GPU: AMD Vega 56
SSD used for Maszyna: Seagate FireCuda 530 2 TB

Best regards,
DB-47

6

EU07 Simulator English forum / Odp: Why trains must start with two pantographs raised?

« dnia: 14 Października 2022, 17:12:55 »

Mostly passanger trains need that, because there is signficant power draw around 50 - 150A from 3 kV DC OHL to feed carriages with power to charge their batteries, power A/C or heater and feed electric sockets / lights. This current is quite small consumption at travel speeds, however when standing at one place it can cause local overheat of overhead lines, which can in worst case lead to its rupture and teardown. Halving that current by raising second pantograph reduces waste heating power to 25 % (P = R * I^2) which prevents this from happening.

EMUs and all cargo trains pulled by thyristor / IGBT driven locomotives (like ČD 163, Traxx, Taurus 1216) do not require this procedure as their standstill power consumption is much smaller and ammount of taken current raises gradually with increasing speed instead of burning "surplus" power in resistor bank like in for example EU07/201Eo/ČD 181, and so on. Light cargo trains pulled by locomotives with resistive regulation like ČD 181 also do not need both pantographs raised as their power draw at standstill is miniscule. For instance ČD 181 with all auxiliary devices running (fans, both compressors on and 48V DC network convertor) barely draws 50A. However as for what I heard from ČD Cargo locomotive engineers, you are not supposed to exceed current draw 200A per pantograph below 5 km/h, so they raise both pantographs anyways to be sure.

Here in Czech republic this is being done on 3 kV DC routes. On 25 kV 50 Hz routes this is not mandatory as currents are smaller by magnitude and barely exceed 20A at standstill assuming power factor is near 1.

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EU07 Simulator English forum / ET42 bug - Electric current distribution is broken :/

« dnia: 12 Września 2022, 00:39:11 »

Hello everyone,

I noticed one strange thing on ET42 locomotive kind of related to train heating bug I have reported recently. It seems when you raise only rear pantograph, current values on series-parallel and parallel are only half of what they should be. For instance I have rear pantograph raised up, I am driving on parallel notch (38) drawing 400A per motor group, so I would expect 1600A being drawn from overhead lines, but only 800A is being drawn as seen in debug mode. (Sreenshot attachment)

I know, that ET42 has special "granny" mode (which can be activated by Ctrl+F) where you can connect all 8 traction motors into series so you can reach faster resistor-less notch for heavy trains or cruise at low speeds without using resistor notches. Here actually one bug resolves another bug, because there is twice more current being drawn in this "granny" mode, and rear pantograph only halves current, so 0.5 * 2 = 1 and fixes that unless you raise front pantograph.

If my understandment is correct, ET42 has those motor (groups) connections:

All series (8S ; 375V per motor) = S // Which I call in paragraph above "granny" mode
Series-parallel (2P 4S ; 750V per motor) = SP
Parallel (4P 2S ; 1500V per motor)  = P

So I tested all connections and pantograph combinations at 200A seen on traction motors ammeter for both rear and front section and here are the results.

Rear pantograph only:

S: Actual = 200 A ; Expected = 200 A ; OK
SP: Actual = 200 A ; Expected = 400 A ; NOK
P: Actual = 400 A ; Expected = 800 A ; NOK

Front pantograph:

S: Actual = 400 A ; Expected = 200 A ; NOK
SP: Actual = 200 A ; Expected = 400 A ; OK
P: Actual = 400 A ; Expected = 800 A ; OK

Both pantographs

S: Actual = 400 A ; Expected = 200 A ; NOK
SP: Actual = 200 A ; Expected = 400 A ; OK
P: Actual = 400 A ; Expected = 800 A ; OK

As again, I would be happier if I could post those findings written in Polish, however as Czech user it would be tragedy to write in PL or have this processed by Google translator :D , so I will remain posting my finding in English.

Best regards,
David

8

EU07 Simulator English forum / ET42 train heating bug

« dnia: 05 Września 2022, 20:11:01 »

Hello again :)

I have been playing with some unusual trainsets and I as saw real life video where ET42 was pulling damaged EP09 + passanger wagons I decided to create passanger train hauled by ET42. So I made trainset ET42 + Bipa. However I noticed strange thing happening there.

When I raised rear pantograph, everything was working as expected. Current via heating cable was flowing only after I switched on heating. However when I raised front pantograph or both, current was flowing into passanger wagons regardless of heating switch position.

I am attaching video with demo of this behaviour. I also tried different passanger wagons like those ones on Wrzosy PXE mission where I replaced EU07 with ET42 and firstly spotted this issue, so it is not wagon specific

P.S. I am having simulator in Polish, however as I am Czech user I rather keep using EN, so nothing is lost in translation :)

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EU07 Simulator English forum / Odp: Bug when pulling EMU and braking with dynamic / independent brake

« dnia: 31 Sierpnia 2022, 11:37:54 »

Yes, I unreversed all vehicles and changed ET42 for Traxx, but the problem was identical. I also changed ET42 for Traxx and threshold was now at about 60 - 70 kN of dynamic braking until it suddenly stopped.

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EU07 Simulator English forum / Bug when pulling EMU and braking with dynamic / independent brake

« dnia: 31 Sierpnia 2022, 10:32:54 »

Hello there,

I discovered minor bug when doing some atypical trainsets. I created trainset ET42 + 2xEN57 to try whether you can pull "dead" EMUs or for instance simulate their transport to overhaul repairs or scrapyard. However during tests I discovered, when you brake only locomotive by using locomotive brake or electrodynamic brake and you exceed 100 kN of braking force. Trainset suddenly halts to complete stop as if there was derail. I recorded short private video clip showing also some debug information.

Repro steps:

I. Accelerate to at least 20 km/h
II. Apply at least 100 kN braking force by using locomotive brake or dynamic brake (for instance on ET42 or Traxx)
III. Observe trainset stopping instantly

Trainset used: See attached screenshot

11

EU07 Simulator English forum / Odp: EU07 double traction - compressors

« dnia: 10 Lutego 2022, 13:27:14 »

He did. There is [103] coupler flag on first screen.
Now I don't remember what exactly those exclamation marks acter "c" ment. In one time that was just preassure switch while in other cases that was fuse indicator. In first case, they might look only on local supply tank preassure and use only air from lead loco. In second case, fuse went off on second loko and you'd have to switch to it and reset it locally.

What I noticed that in vehicles devices compressor has those indicators, C means compressors are enabled and running, c! compressor is enabled, but pressure relay keeps it off and . means that compressor is disabled.

12

EU07 Simulator English forum / Odp: EU07 double traction - compressors

« dnia: 10 Lutego 2022, 13:18:34 »

Hello thanks for your updates and efforts with translating into english.

I connected multiple unit steering cable between both EU07 locomotives. Otherwise I would have missed half of tractive force :D

My hypothesis was also that sudden loss of pressure in main reservoir (in my case as a result of unbraking trainset using high pressure pulse into brake pipe), which drained faster main reservoir on front locomotive than on rear locomotive and it triggered front locomotive's pressure sensor which turned on compressor, but rear locomotive's main reservoir never got below 7,5 bar and for that reason compressor on second locomotive remained inactive. But when I turned off compressors using C key, let the pressure drop below 7,5 bar for instance down to 5,5 bar and turned on again compressors by using C key, both compressors started to operate until 8,5 bar was reached. Sometimes when air pressure drop is very slow, for instance brake is set to running mode - 5 bar for long time and trainset is short, then both locomotives reservoir reach 7,5 bar threshold at same time and it works as designed in real life (probably?)

I assumed that multiple steering ("Sterowanie ukrotnione" in PL or in CZ "Mnohočlenné řízení") overrides pressure sensor on B locomotive and only sensor from A locomotive decides, if compressor should run or not. Simply said, that what does locomotive A, also does locomotive B with few exceptions. However when I submitted this question to Czech FB group "Strojvedoucí" I was given this answer "U EU07 ve dvojici každá sama podle tlakového spínače." (Each locomotive switches the compressor independently according to its pressure sensor) So in case of EU07 this seems to be working as designed, but in case of ET42 this seems to me as legit bug

13

EU07 Simulator English forum / EU07 double traction - compressors

« dnia: 06 Lutego 2022, 14:46:21 »

Hello everyone,

I have question or possible bug report for one certain behaviour when having double traction of EU07s. I have this consist EU07-477+EU07-1512+cargo wagons. After I unbraked trainset, I noticed after pressure drop in main reservoir, that only front locomotive's (EU07-477) compressor got running while second one's (EU07-1512) remained unactive as can be seen on provided screenshots (EU07-477 ... C and EU07-1512 ... c!) However when I had manually disabled compressor and had switched it on back after pressure dropped below 7,5 bar, both compressors started to run. The same behaviour I have also observed on ET42 (easily replicable), 2xEP05 and other EU07 derivates (EP07,EP08).

Does this behavior reflect the real world's behavior?

Best regards,
DB-47

14

EU07 Simulator English forum / Odp: Electric units door control

« dnia: 11 Lipca 2012, 08:59:22 »

I tryied at first green marked key, result was "Key pressed [=]". Then I tryied red marked key, result was "Key pressed [?]". In all cases I never pressed those keys together with shift.

15

EU07 Simulator English forum / Odp: Electric units door control

« dnia: 10 Lipca 2012, 20:59:49 »

When I switched to EN QWERTY layout, in notepad appears char "/", but in Masyzna console appears: "Key pressed [=]". That's weird. On this photo you can see exactly same keyboard, as I use. http://3s.czc.cz/9an4fgj6k2g1u999okkerg5su8/obrazek?size=7

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EU07 Simulator English forum / Odp: Electric units door control

« dnia: 10 Lipca 2012, 20:33:04 »

In console appears: "Key pressed [?]", I tryied CZ + EN layout. In both cases I pressed first key on the left from right shift. (Might be useful czech layout picture) http://cs.wikipedia.org/wiki/Soubor:Qwertz_cz.svg

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EU07 Simulator English forum / Electric units door control

« dnia: 10 Lipca 2012, 19:28:32 »

Hello developers and Maszyna fans,

I have problem with sounding departure buzzer, anyway I am able to close left and right doors, I tryied to use CZ (native), EN and PL layout, but nothing worked. My keyboard is Microsoft Sidewinder X4 w/ Czech layout.

Thanks for your help!

18

EU07 Simulator English forum / Odp: Locomotive model exchange

« dnia: 02 Lipca 2012, 21:37:04 »

Thanks a lot, this worked fine.

19

EU07 Simulator English forum / Locomotive model exchange

« dnia: 02 Lipca 2012, 20:39:22 »

Dear developers and Maszyna fans

My question is, how can I change model of locomotive, when I available. I found for example ET22-313 with model 201e-p attached with new semi-pantographs, used in L053 activity "sluzba-night 2" as static train. But when I tryied to create sample trainset with ET22-313 attached with semi-pantograph on track TD, only one model was available, 201e with classic diamond shaped pantographs. How can I select which model will be used for locomotive?

Thanks for any answer.