HARNESS AS-CAB 4746069 - Caterpillar

Droop
This feature enables an engine to share a load with other engines. If an engine is operating at high idle rpm and a load is applied, the engine rpm is reduced. The engine rpm is reduced as the load increases. This reduction in rpm is the droop. The droop can be programmed. If the percent of droop is equal for two identical engines in parallel operation, the engines share the load equally.Ether Control
Note: This is an optional feature.The ECM automatically injects ether into the air inlet manifold when the following conditions are met:
The engine rpm is present.
The jacket water coolant temperature is below 10 °C (50 °F).The duration of ether injection varies linearly with the jacket water coolant temperature. The duration of ether injection varies within the following range:
10 seconds at the maximum temperature of 10 °C (50 °F)
130 seconds at the minimum temperature of −40 °C (−40 °F)The longest duration of ether injection is 130 seconds even if the jacket water coolant temperature is less than −40 °C (−40 °F). See Illustration 2.
Illustration 2 g00799430
Jacket water coolant temperature and duration of ether injection
(Y) Temperature in °C
(X) Time in seconds A switch on the instrument panel enables the operator to inject ether manually. Ether injection occurs when the following conditions are met:
The switch for ether injection is in the manual position.
The engine rpm is less than 1900 rpm.
The jacket water coolant temperature is less than 10 °C (50 °F).Fuel Correction Factor
When the engine is shipped from the factory, an estimate of the engine's fuel consumption is programmed into the ECM. The estimate is based upon the engine's performance specifications. The actual fuel consumption can be determined with a meter that measures the flow of the fuel. Customers are likely to find a slight difference between the estimate of fuel consumption that was programmed and the actual fuel consumption. The customer can use an ET service tool to program the ECM for the actual fuel consumption. A factory level security password is required in order to change this parameter.To program the ECM for the actual fuel consumption, change the Fuel Correction Factor that is already programmed into the ECM. The Fuel Correction Factor can be programmed in increments of 0.5 percent between 25 percent.Fuel Position Multiplier
The fuel position multiplier is an external input to the ECM. The input reduces the available fuel rack according to the magnitude of the signal. The fuel position multiplier can be considered as an external derating of engine power. Typically, the input is a means for reducing the engine power without changing the throttle signal. A common application of this feature is the control of wheel slippage by the locomotive control.The ECM reads a Pulse Width Modulated signal (PWM) that is similar to the throttle signal. Usually, a converter is used to change the signal from the locomotive control into a PWM signal. An increase in the magnitude of the signal reduces the available fuel. For example, if the engine power output is 100