The SW1200 was the third model of 1200 hp SW series switchers built by EMD. It was a successor to the SW7 and SW9. Compared to its direct predecessor, the SW9, the SW1200 differed in that it used the improved and more reliable 567C engine, compared to the SW9's 567B engine. Late SW1200s built in 1966 were instead built with the 567E 12-cylinder engine. Most of the locomotive's external features were unchanged from the SW9, making distinguishing between the two models difficult.[1] SW1200 production began in January 1954, immediately after SW9 production came to an end the previous month. Production continued for 12 years until the last SW1200 left EMD's manufacturing facility in May 1966.[1]
Like many EMD products, customers could customize their SW1200 orders. Several types of trucks were available, including Flexicoil trucks and the standard Blomberg B trucks.[1] A few units were built with dynamic brakes, featuring a large square box with a fan on top of the hood, right in front of the cab.
Recorded from a EMD SW1200
This project is a normal idle version. It has switcher type exhaust with 2 exhaust stacks.
File also contains an "Isolation Switch" Mode on F15 when Standing Still.
Pressing F15 while not moving will lower the prime mover and lock the motor. F15 must be turned off to begin moving.
Another Mode is "Reverser In Center Position". When pressing F24 while stopped, the motor will lock so you can throttle through the notches like the prototype in neutral. F24 must be turned off to begin moving.
This project has "Run 8" mode. When turning on F26 with F28 off, the prime mover goes to run 8. Turning off F26 returns the prime mover sounds back to normal mode.
This project has "Coast" mode. When turning on F27 with F28 off, the prime mover goes to idle for coasting purposes. Turning off F27 returns the prime mover sounds back to normal mode.
You can still use F26 and F27 for manual nothing. You have to keep both F26 and F27 off before pressing F28 to turn on manual notching. Once F28 is on, you can use F26 to notch up and F27 to notch down. F26, F27, and F28 must be turned off to return to normal mode.
This project has "Load" mode. When turning on F29 with F15, F24, F26, F27, F28 off, the prime mover goes into load mode. While you are using load mode, the prime mover will notch up 1 or more notches based on primary load settings(CV104). The throttle notches up using speed instead of requested speed while using the load feature. F29 must be turned off to return to normal mode.
1st Generation Switcher Horn Pack 1
Horns (SoundCV9):
CV163=0 Handcock 4700 Whistle
CV163=1 Leslie A-125
CV163=2 Leslie A-200
CV163=3 Leslie S-25
CV163=4 Leslie S-2M
CV163=5 Leslie S-3K
CV163=6 Leslie S-3L
CV163=7 Nathan M-3
CV163=8 Nathan M-5
CV163=9 Nathan P-2 (Temp Nathan P-3-OC)
CV163=10 Nathan P-3-OC
CV163=11 Nathan P-5-OC
CV163=12 Wabco A2
CV163=13 Wabco AA-2 (Temp Wabco A2)
CV163=14 Wabco E-2
CV163=15 Nathan K3L
EMD 1st Generation Switcher Bell Template Pack 1
Bells (SoundCV10):
CV164=0 EMD 8004156 Bronze Bell 007
CV164=1 EMD 8475495 Steel Bell 011
CV164=2 EMD 8004156 Bronze Bell 008
CV164=3 EMD 8475495 Steel Bell 034
Auto Bell:
Many Second and Third Generation locomotives have been fitted with an Automatic Bell that is triggered when the horn is blown. In MANY cases this cannot even be bypassed on modern locos. Before the FRA mandated this feature on new locomotives the bell was of course turned on and off separately. Some locomotives were delivered with a manual bell and have been converted to an automatic bell. This creates a challenge in sound file creation.
We realize that not every loco with a particular prime mover had this feature. As such we have built in an option to turn the feature on and off. We will set the default in the file to be what is most appropriate for the particular file.
To turn the feature OFF - Auto Bell OFF:
1. Remove the Auto bell sound slot from the function mapping chart
CV31 = 16, CV32 = 8
----------------------
CV311 = 4
2. Change the sound configuration of the Auto bell sound slot
CV31 = 16, CV32 = 1
----------------------
CV287 = 0
To turn the feature ON - Auto Bell ON:
1. ADD the Auto bell sound slot from the function mapping chart
CV31 = 16, CV32 = 8
----------------------
CV311 = 12
2. Change the sound configuration of the Auto bell sound slot
CV31 = 16, CV32 = 1
----------------------
CV287 = 1
Auto Bell Timer:
The Bell timer is amount of time the bell will play after the horn if the auto timer is active. The timer is broken down into 1/4 of a second increments.
CV169=4 - 1 Second
CV169=8 - 2 Seconds
CV169=12 - 3 Seconds
CV169=16 - 4 Seconds
CV169=20 - 5 Seconds - Default
Etc...
Switcher Brake Squeal Template Pack 1
Brake Squeal (SoundCV11)
CV165=0 Composition Shoe #1
CV166=1 Cast Iron Shoe #1
EMD 1st Generation Switcher Air Dryer Template Pack 1
Air Dryer (SoundCV12)
CV166=0 NW2 Air Dryer 1
CV166=1 NW5 Air Dryer 1
CV166=2 SW7 Air Dryer 1
CV166=3 SW10 Air Dryer 1