VALVE GROUP 9J8224 - Caterpillar

Engine
Type ... 3516Rated Power ... 2075 HpRack Sensor Calibrate Position ... 12.30 mmRated Rack Position ... Cal Posn - 1.98 mmRack Start Position ... Cal Posn - 11.28 mmGenerator
Type ... KatoCurrent Rating (Intermittent) ... 6000ACurrent Rating (Continuous) ... 4400AVoltage Rating ... 1250VLocomotive Specificatios
Traction Motor Type ... D77 Full Field Only (no field shunting)Gear Ratio ... 62:15Motoring Mode
Dual Ramp Rate
Motor Current Paths In Parallel Across Generator ... 4Main Line Ramp Rate ... 50 rpm/secSwitch Yard Ramp Rate ... 75 rpm/secTransition
Motor Current Paths In Parallel Across Generator Below Transition ... NAAbove Transition ... NARamp Rate ... NAVoltage And Current Sense
Generator Voltage Sense ... 25 Gen Volts/Sense VoltGenerator Current Sense ... 120 Gen Amps/Sense VoltMotor Current Sense ... 30 Motor Amps/Sense VoltDynamic Braking Mode
Maximum Field Current Limit (24T > 59.4V) ... 975AField Current if 1.8 Minimum Field Current Limit (24T Maximum Grid Current Limit (24T > 53.5V) ... 895AGrid Current if 1.9 Minimum Grid Current Limit (24T Low To High Speed Trip Point ... 24T = 42.68VHigh To Low Speed Trip Point ... 24T = 28.46VLow Engine Speed (24T High Engine Speed (24T > 42.68V ... 1000 rpmVoltage And Current Sense
Generator Voltage Sense ... 5 Gen Volts/Sense VoltGenerator Current Sense ... 30 Gen Amps/Sense VoltGrid Current Sense ... 30 Grid Amps/Sense VoltSelf Load Mode
Generator Current Limit ... 2000AGenerator Voltage Limit ... Same as notch settingPower 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 kPaDerate Schedule Slope ... 0.19 mm/kPaMaximum Derate Limit ... 5.04 mmTemperature 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)/1.3708Full Power Temperature Range ... Derate Schedule Slope ... 0.8 mm/°CMaximum Derate Limit ... 4.02 mmPower 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