Van's Aircraft RV-7A Flight Manual page 158

HB-YMT
The alternator failure checklist appears, if enabled
•
A voice alert is played verifying the emergency
•
A determination of IMC/VMC conditions is made by
•
asking the user to select IMC/VMC
(just select one, no difference in setup in this aircraft
however menu cannot be skipped)
Power to the primary alternator field is cycled (1
•
second off, then on again)
The VP-200 waits 15 seconds for the bus voltage to
•
rise above the low voltage limit. If the bus voltage
rises, then the emergency is cancelled.
A VMC or IMC load shed is initiated based on the
•
earlier input. A load shed event sets each device to
either manual on or manual off, meaning that they
will not change (on/off) as the modes change. You
can override this for each device using an external
switch or the device list.
The mode changing is set to manual, so you will
•
have to change modes manually while the
emergency is active.
Soft keys 4 & 5 change to provide the following
•
emergency functions (red on white):
Electrical Shutdown – turns off the entire electrical Electrical Shutdown
Electrical Shutdown Electrical Shutdown
•
system immediately, except for backup circuits which
are directly controlled by their respective switches.
Restore – restores each electrical device to its Restore
Restore Restore
•
respective on/off state as it was before the
emergency was initiated. The alternator fields are not
restored and remain in their current state.
7–54 Description of the Airplane and its Systems
Airplane Flight Manual
IMC/VMC on the soft IMC/VMC IMC/VMC soft- - - - keys soft soft keys keys keys
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