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Ignite...
Glow plug is switched on and the starting gas valve is opened. The
GSU’s red
Ignition
LED is illuminated when the glow plug switches on.
The ECU now pauses until ignition occurs and will remain in this
condition until at least one of the following criteria is met:
•
The measured EGT exceeds a pre-programmed value
•
The measured EGT rises faster than a pre-programmed time
If one of these conditions exists, turbine proceeds to the next operant
condition (
AccelrDly
).
If the
P80
doesn't ignite after several attempts (within the pre-
programmed time), the ignition state is discontinued and the turbine will
shift to the
SlowDown
state.
AccelrDly
Voltage for the starter motor is re-engaged. Fuel valve opens and the
fuel pump will run at a steady minimum voltage (a level where the pump
just begins to operate), for approximately two (2) seconds. During this
state, the turbine operating system purges air from the pump and fuel
lines, while warming the combustion chamber in preparation for
acceleration.
Glow plug turns off.
The red
Pump running
LED turns on and will stay illuminated as long as
the pump operates.
Acceler.
In this condition, the fuel pump and starter motor voltages ramp up to
accelerate the turbine to idle. The yellow
Standby/Manual
LED will
illuminate during this period.
Starting gas is shut off.
Under normal circumstances, the turbine will ascend to idle RPM. The
starter motor then disengages and the yellow
Standby/Manual
LED
turns off. Here, the turbine progresses to the next state (
Stabilize
).
During the following error conditions, the acceleration is discontinued
and a jump to the
SlowDown
state occurs:
•
Turbine does not reach idle RPM after a pre-programmed period of
time
•
The change in turbine speed is less than a pre-programmed amount,
during a 0.1 second interval
Stabilize
Turbine successfully accelerates to the idle RPM, then automatically
increases speed to about 55,000 RPM. When this speed is maintained
consistently for at least one second, the turbine will proceed to the next
state (
LearnLO)
.
LearnLO
In this state, the turbine automatically decreases RPM to the idle speed.
As soon as idle speed is attained, with the throttle stick in the idle
position, the turbine will proceed to the next state (
RUN (reg.)
).
