JetCat P80 Instruction Manual page 22

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.
Voltage for the starter motor is re-engaged. Fuel valve opens and the
AccelrDly
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.
In this condition, the fuel pump and starter motor voltages ramp up to
Acceler.
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
Turbine successfully accelerates to the idle RPM, then automatically
Stabilize
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).
In this state, the turbine automatically decreases RPM to the idle speed.
LearnLO
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.)).
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