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Over Temperature Alarm
The Over Temperature alarm monitors the particulate filter temperature and the over temperature alarm produces an alarm if the temperature exceeds a configurable threshold. The operator is informed of an Over Temperature Alarm. The Over-Temperature Warning alarm is set to the "ON" state when the monitored temperature reaches or exceeds the Assert Alarm temperature value as configured by the user through the monitoring system. Pin 59 in the "ON" state will illuminate the optional Over-Temperature LED. Refer Systems Operation Troubleshooting, Testing and Adjusting, KENR6695-00, "Input Components".Through the CAT ET service tool, the users may configure the conditions to reset the Over-Temperature Warning alarm to "OFF" by choosing one of two methods:
The Over-Temperature Warning alarm will automatically be set to the "OFF" state when the monitored temperature drops below the Assert Alarm temperature value.
The Over-Temperature Warning alarm will stay latched in the "ON" state until cleared by the user through Cat ET.Over-Pressure Alarm
The Over-Pressure Alarm monitors the particulate filter pressure and annunciates an alarm if the pressure exeeds a configurable threshold. The operator should be informed of an Over-Pressure Alarm. There are two configurable Over-Pressure Alarm sets of conditions. By programming the two configurable Over-Pressure Alarm sets differently, one may be considered a Warning alarm and the other as a Critical alarm. The Warning alarm will be associated with Pin 60 (the optional Over-Pressure LED) and the Critical alarm will be associated with Pin 61 (the optional System Problem LED).
The Warning alarm is associated with the Over-Pressure LED.
The Critical alarm is associated with the System Problem LED.Refer Systems Operation Troubleshooting, Testing and Adjusting, KENR6695-00, "Input Components"Conditions To Set The Over-Pressure Alarm To The "ON" State
When the pressure exceeds the Pressure Threshold for the programmed percent of time (Duty Cycle) over the Time Interval, then the appropriate alarm (Over-Pressure or System Problem) is set to "ON". The pressure is sampled in 1 second intervals.Conditions To Set The Over-Pressure Alarm To The "OFF" State
The user may configure the conditions to reset the Over-Pressure alarms to "OFF" by choosing one of two methods:
The Over-Pressure alarm is set to the "OFF" state when the "ON" conditions are no longer met.
The Over-Pressure alarm will stay latched in the "ON" state until the Logged Event is cleared by the user through Cat ET.Configurable Parameters - The following parameters are configurable through the CAT ET service tool,
Particulate Trap Over-Pressure Warning Activation Time Percentage – Default is 10%
Particulate Trap Over-Pressure Warning Alarm Reset Configuration – Default is Manual
Particulate Trap Over-Pressure Critical Alarm Activation Time Percentage – Default is 10%Programmable Monitoring System
The purpose of the programmable monitoring system is to give the customers the ability to customize how the system reacts to possible engine damaging conditions. This feature reduces the number of custom personality modules, and part numbers, needed to meet widely varying customer needs. CAT ET can be used to view Programmable Monitoring System settings and customize the Programmable Monitoring System if allowed via security settings. Table 1 describes the programmable monitoring system. In