Usage:
Engine
Type ... 3508
Rated Power ... 1000 Hp
Rack Sensor Calibrate Position ... 10.50 mm
Rated Rack Position ... Cal Posn - 1.98 mm
Rack Start Position ... Cal Posn - 9.48 mm
Generator
Type ... Kato
Current Rating (Intermittent) ... 6000A
Current Rating (Continuous) ... 4000A
Voltage Rating ... 700V
Locomotive Specifications
Traction Motor Type ... D77 Full Field Only (no field shunting)
Gear Ratio ... 62:15
Motoring Mode
Dual Ramp Rate
Motor Current Paths In Parallel Across Generator ... 4
Main Line Ramp Rate ... 100 rpm/sec
Switch Yard Ramp Rate ... 100 rpm/sec
Transition
Motor Current Paths In Parallel Across Generator
Below Transition ... NA
Above Transition ... NA
Ramp Rate ... NA
Voltage And Current Sense
Generator Voltage Sense ... 14 Gen Volts/Sense Volt
Generator Current Sense ... 120 Gen Amps/Sense Volt
Motor Current Sense ... 30 Motor Amps/Sense Volt
Dynamic Braking Mode (Inactive)
Maximum Field Current Limit (24T > 59.4V) ... NA
Field Current if 1.8 < 24T < 59.4V ... NA
Minimum Field Current Limit (24T < 1.8V) ... NA
Maximum Grid Current Limit (24T > 53.5V) ... NA
Grid Current if 1.9 < 24T < 53.5V ... NA
Minimum Grid Current Limit (24T < 1.9V) ... NA
Low To High Speed Trip Point ... 24T = 42.68V
High To Low Speed Trip Point ... 24T = 28.46V
Low Engine Speed (24T < 28.46V) ... 600 rpm
High Engine Speed (24T > 42.68V ... 1000 rpm
Voltage And Current Sense
Generator Voltage Sense ... N/A
Generator Current Sense ... N/A
Grid Current Sense ... N/A
Self Load Mode
Generator Current Limit ... 2000A
Generator Voltage Limit ... Same as notch setting
Power Derate Functions
There are two derate functions. They are active only in the higher notches in "engine power control" mode. Neither are active in "traction power control" mode. Refer to table for Basic Notch Settings to determine which notch each mode is active in.
Altitude Derate
This is a function of barometric pressure down stream of the inlet air cleaners of the engine.
Full Power Barometric Pressure Range ... > 84.1 kPa
Derate Schedule Slope ... 0.19 mm/kPa
Maximum Derate Limit ... 5.04 mm
Temperature Derate
This is a function of the coolant temperature exiting the water pump. This temperature results from the mixing of the radiator exit temperature and the by-pass flow from the thermostats. The temperature and the output voltage are related by the following formula:
Temp (°C) = 111.205 - (Volts)/1.3708
Full Power Temperature Range ... < 94°C (201°F)
Derate Schedule Slope ... 0.8 mm/°C
Maximum Derate Limit ... 4.02 mm
Power Matching
The highest traction motor current is limited to the highest of the following two limits:
Limit 1 (Amps) = K1 × (Notch Constant) - C1 × (Motor Voltage)
Limit 2 (Amps) = K2 × (Notch Constant) - C2 × (Motor Voltage)
The NOTCH CONSTANT is a function of the notch code. The values for this NOTCH CONSTANT and also for K1, K2, C1, and C2 are shown in the Power Matching tables.
Pacesetter
Although the NOTCH CONSTANT is essentially a number defined internally in the software, it can be considered as a voltage signal. The PACESETTER function works through the POWER MATCHING FUNCTION. When the PACESETTER input voltage (in volts) is numerically less than the NOTCH CONSTANT, the POWER MATCHING FUNCTION uses this PACESETTER input voltage instead of the NOTCH CONSTANT in the above formulas for Limit 1 or Limit 2 to determine the motor current limit.
Basic Notch Settings In Motoring Mode
Power Matching Tables
