i04317185
Monitoring System
If the Shutdown mode has been selected and the
warning indicator activates, engine shutdown
may take as little as 20 seconds from the time the
warning indicator is activated. Depending on the
application, special precautions should be taken
to avoid personal injury. The engine can be re-
started following shutdown for emergency ma-
neuvers, if necessary.
NOTICE
The Engine Monitoring System is not a guarantee
against catastrophic failures. Programmed delays
and derate schedules are designed to minimize false
alarms and provide time for the operator to stop the
engine.
The following parameters are monitored:
• Coolant temperature
• Intake manifold air temperature
• Intake manifold air pressure
• Oil pressure
• Pressure in the fuel rail
• Engine speed/timing
• Fuel temperature
• Atmospheric pressure (Barometric pressure)
• Water in fuel switch
• Inlet temperature of the diesel oxidation catalyst
• Inlet temperature of the diesel particulate filter
• Differential pressure in the diesel particulate filter
• The amount of soot in the diesel particulate filter
Programmable Options and
Systems Operation
If the Warning/Derate/Shutdown mode has been
selected and the warning indicator activates,
bring the engine to a stop whenever possible. De-
pending on the application, special precautions
should be taken to avoid personal injury.
The engine can be programmed to the following
modes:
““Warning””
The orange “Warning” lamp will turn “ON” and the
warning signal is activated continuously in order to
alert the operator that one or more of the engine
parameters is not within normal operating range.
““Derate””
The orange “Warning” lamp will turn “ON” and the
red shutdown lamp will be flashing. After the warning,
the engine power will be derated. The warning lamp
will begin to flash when the derating occurs.
The engine will be derated if the engine exceeds
preset operational limits. The engine derate is
achieved by restricting the amount of fuel that is
available for each injection. The amount of this
reduction of fuel is dependent on the severity of the
fault that has caused the engine derate, typically up
to a limit of 50%. This reduction in fuel results in a
predetermined reduction in engine power.
““Shutdown””
The orange warning will turn “ON” and the red
shutdown lamp will also turn “ON” . After the warning,
the engine power will be derated. The engine will
continue at the rpm of the set derate until a shutdown
of the engine occurs. The engine can be restarted
after a shutdown for use in an emergency.
A shutdown of the engine may occur in as little as 20
seconds. The engine can be restarted after a
shutdown for use in an emergency. However, the
cause of the initial shutdown may still exist. The
engine may shut down again in as little as 20
seconds.
If there is a signal for high coolant temperature, there
will be a 2 second delay in order to verify the
condition.
If there is a signal for low oil pressure, there will be a
2 second delay in order to verify the condition.
SEBU8726 35
Features and Controls
Monitoring System
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