822344A 3 Mercury POWER TRIM

Monitoring Parameters
"Low System Voltage"
The trip point for this parameter is set at the factory. The trip point cannot be changed. This parameter is always ON. This parameter cannot be turned off. If the system voltage decreases to the trip point, the ECM will generate a warning or a shutdown."High Engine Coolant Temperature"
The trip points for this parameter can be programmed by the customer. The shutdown response is always ON. The shutdown response cannot be turned off. If the engine coolant temperature exceeds the trip point, the ECM will generate a warning, an impending shutdown, or a shutdown."Low Engine Coolant Temperature"
The trip point for this parameter can be programmed by the customer. If the engine coolant temperature decreases to the trip point, the ECM will generate a warning."Engine Overspeed"
The trip point for this parameter is set at the factory. This parameter is always ON. This parameter cannot be turned off. If the engine speed exceeds the trip point, the ECM will activate an engine shutdown. For generator set engines, a typical trip point is 125 percent of the rated speed for the engine."High Engine Oil Temperature"
The trip point for a warning for this parameter can be programmed by the customer. The trip point for a shutdown is set at the factory. This parameter is always ON. This parameter cannot be turned off. If the engine oil temperature exceeds the trip point, the ECM will generate a warning or a shutdown."High Oil Filter Differential Pressure"
The trip point for a warning for this parameter can be programmed by the customer. The trip point for a shutdown is set at the factory. This parameter is always ON. This parameter cannot be turned off. If the engine oil filter differential pressure exceeds the trip point, the ECM will generate a warning or a shutdown."Low Oil Filter Differential Pressure"
The trip point for a warning for this parameter can be programmed by the customer. The trip point for a shutdown for this parameter is set at the factory. The warning is always on. The shutdown is configurable to OFF or ON. If the engine oil filter differential pressure decreases to the trip point, the ECM will generate a warning or a shutdown."High Fuel Temperature"
The trip point for this parameter can be programmed by the customer. If the fuel temperature exceeds the trip point, the ECM will generate a warning."Low Fuel Pressure"
The trip point for this parameter can be programmed by the customer. If the fuel pressure decreases to the trip point, the ECM will generate a warning."High Eng Oil to Eng Coolant Diff Temp"
The trip point for a warning for this parameter can be programmed by the customer. The trip point for a shutdown for this parameter is set at the factory. The shutdown response is always ON. The shutdown response cannot be turned off. If the differential temperature of the engine oil to the jacket water exceeds the trip point, the ECM will generate a warning or a shutdown."Low Gas Fuel Differential Pressure"
The trip point for this parameter can be programmed by the customer. If the fuel differential pressure decreases to the trip point, the ECM will generate a warning."High Gas Fuel Differential Pressure"
The trip point for this parameter can be programmed by the customer. If the fuel differential pressure exceeds the trip point, the ECM will generate a warning. This parameter is always on."High System Voltage"
The trip point for this parameter is set at the factory. The trip point cannot be changed. This parameter is always ON. This parameter cannot be turned off. If the system voltage exceeds the trip point, the ECM will generate a warning.Trip Points of the Engine Load for High Inlet Air Temperature
The trip points for this parameter can be programmed by the customer. The shutdown response is always ON. The shutdown response cannot be turned off. This feature provides a trip point between high engine load and low engine load. The trip point is used for events that involve high inlet air temperature. The trip point for the events is based on the engine load. The possible responses of the system include warning, an impending shutdown, and shutdown."High Inlet Air Temperature at Low Engine Load"
The "Service/Configuration" screen of Cat ET defines the "High Inlet Air Temp Engine Load Set Point". The ECM can activate an event if the inlet air temperature exceeds the trip point during the low load operation that is defined."High Inlet Air Temperature at High Engine Load"
The "Service/Configuration" screen of Cat ET defines the "High Inlet Air Temp Engine Load Set Point". The ECM can activate an event if the inlet air temperature exceeds the trip point during the high load operation that is defined."High Fuel Pressure"
The trip point for this parameter can be programmed by the customer. The ECM will activate a warning if the fuel pressure exceeds the trip point.Conditions for Parameters
Some of the programmable parameters are dependent on the status of an ECM output before the parameters are allowed to function. Some of the parameters are allowed to function after the crank terminate relay has been energized for more than 30 seconds. Other parameters are allowed to function after the output for the fuel control relay is energized. Some parameters are not dependent upon any conditions.The conditions are designed to eliminate false events during start-up if the customer has programmed a delay time to zero.A warning will not be activated if the trip point for a shutdown is programmed to activate before the trip point for a warning.Default Settings of the Programmable Monitoring System
Table 1
Default Settings of the Programmable Monitoring System
Parameter Severity Delay in Seconds Trip Point Default State
E073
High Oil Filter Differential Pressure (1) 10 117 kPa (17 psi) Always On
(3) 10 138 kPa (20 psi)
E197
High Engine Oil Temperature (1) 20