My implementation of the 394 driver’s brake valve.
Has the standard 7 positions.
Uses a PLBS controller from can8270 (thanks to him for the implementation), but modified for this valve.
If you plan to use this valve with his equipment, it’s better to replace the PLBS with the one installed on this test stand (brakes will work better).
Consists of 3 pneumatic parts:
Main reservoir part – main reservoir, compressor, main reservoir sensor, inlet valve
Brake pipe part – brake pipe sensor, auxiliary reservoir, cut-off valve, brake pipe
Exhaust part – exhaust valve
The controller is implemented in Lua. The code is not obfuscated – feel free to explore it.
When installing on your own equipment, you must:
Replace the electric motor with a clutch and put the logic that originally went to the motor into the clutch (there is no valve on the main reservoir inlet except the shut-off valve).
Correctly set the positions inside the seat from which the composite signal comes.
(If you use hotkeys, make sure to set them to Push. If you use numeric values, turn them up to 100%. If the numeric values send an inverted signal, add a multiply-by-(-1) function in the controller where the reading occurs – this will flip the values.)
Happy building!
