Subscribe to download
Union Pacific EMD SD90MAC-H2

This engine is ESS2 and WABSIM compatible

---

History

The SD90MAC was introduced in 1995, along with the SD80MAC locomotives. The SD90MAC was designed to utilize the new 16-cylinder H-engine, while the SD80MAC was designed to use the 20-cylinder version of the existing 710G engine. However, technical problems with the 6,000 horsepower engine resulted in the first locomotives being shipped with 4,300 hp 16-cylinder 710G engines, making them similar to the SD70MAC's. These locomotives were informally designated SD9043MAC by railroads that purchased them with the option to re-engine them with 6,000 hp engines when they became available.



Overview

1.0 Startup
2.0 Setup lead unit or trailing units with local control
2.0.1 Setup Airbrakes
2.1 Setup trailing units
3.0 General Data
3.1 Equipment Designations
3.2 MU/DPU Equipment



1.0 Startup

-Enter cab
-Turn on all breakers in the cabinet
-make sure MU Engine Stop is in the "off" position
-Flip Battery Knife Switch up
-Close cabinet
-Turn on “Fuel Pump/Control” on main control desk left hand panel
-Press and hold “Engine Start” Button on Breaker cabinet for about 4 seconds
-After prime mover has started, turn on the “Isolation Switch”

2.0 Setup lead unit or trailing units with local control

After Startup:

-Turn on "Engine Run" and "Generator Field"
-Setup Air brakes (see 2.0.1)
-Perform brake test (optional)
-leave "AIR" menu by pressing the "BACK" button on the right side of the screen
-check if correct air brake status is displayed in the main menu and Brake Pipe pressure
is increasing or at 90 PSI
-apply independent brake to at least 30 PSI (BC shows locomotive braking pressure)
-release parking brake with the "Parking Brake Release" button on the back panel
until the parking brake current meter spikes
-select headlight orientation with headlight selector switches and the headlight buttons on
main desk left hand panel

2.0.1 Setup Air brakes

-Insert Reverser and select direction based on the direction indicator (F/-/R)
-Wait until ICE Displays have booted
-on right hand screen press on the menu "AIR"
-select with the Buttons "LE/TR" and "IN/OUT" your Brake setup
-confirm with the "CON" button, press once to initiate, twice to confirm

2.1 Setup trailing unit

After Startup:
-check prime mover status on Diagnostic Screen (EM2000) in breaker cabinet
-select unit orientation with the headlight selector switch
-hook up all necessary cables and hoses (MU only)
-Setup DPU controls (DPU only)
-Setup Air brakes (see 2.0.1)
-remove Reverser handle
-make sure consist has enough brakes applied
-release parking brake with the "Parking Brake Release" button on the Back panel
until the Parking brake current meter spikes
-leave cab and close all windows and doors


3.1 Equipment Designations

EPIC: Wabco Computerised Air Brake System
EM2000: Locomotive Control Computer
ICE: Integrated Cab Electronics

3.2 Engine Specifications
EMD GM16V265H (4 cyl 3x3 modular)
6000HP (1600 SWATT)
200 000 lbf starting force (simulated)
165 000 lbf continuous
8800 Gallon/33000l diesel fuel tank

3.3 MU/DPU equipment
WABSIM airbrakes (90 PSI)
ESS 2.1 MU control
ESS 2.1 DPU control

(also, for better performance, remove the ropes)

---

Enzokatz for Thumbnail


[discord.gg]