Sensors And Electrical Components - Perkins 1104D-E44T Operation And Maintenance Manual

30
Features and Controls
Overspeed
" " Warning" "
The "Warning" lamp and the warning signal (orange
lamp) 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.
" " Warning/Derate" "
The "Diagnostic" lamp turns "ON" and the warning
signal (red lamp) is activated. 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.
" " Warning/Derate/Shutdown" "
The "Diagnostic" lamp turns "ON" and the warning
signal (red lamp) is activated. 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 low oil pressure or for coolant
temperature, there will be a two second delay in order
to verify the condition.
For each of the programmed modes, refer to
Troubleshooting Guide, "Indicator Lamps" for more
information on Indicator Lamps.
For more information or assistance for repairs,
consult your Perkins dealer or your Perkins
distributor.
Overspeed
An overspeed condition is detected by the Electronic
Control Module (ECM). The event code E190 will be
logged if the engine speed exceeds 3300 rpm. The
"DIAGNOSTIC" lamp will indicate a diagnostic fault
code. The diagnostic fault code will remain active until
the engine speed drops to 2800 rpm.
Sensors and Electrical
Components
The illustrations within the following sections are
typical location of the sensors or electrical
components for an industrial engine. Specific engines
may appear different due to differences in
applications.
i05251914
SEBU9066
i05488609