Vertical Power VP-X Pro - 9 Troubleshooting; Flap Configuration

Page 65
VP-X Installation and Operating Manual
Rev. D (August 5, 2020)
9. Troubleshooting
Follow these instructions for each system.
Please contact Vertical Power Support at 425.328.1658 if you have any
questions.
9.1 Flap Conguration
Verify correct ap operation by following these steps, IN ORDER:
1. Connect the VP-X Congurator and select the aps section.
2. Enable the aps and press ‘Update’ button.
3. Set the aps to ‘Momentary’ and press ‘Update’ button.
4. Verify that the ‘Faulted’ eld (under ap status) is No.
5. Move the aps using the up and down buttons on the Congurator.
If the aps move in the opposite direction, then change the motor
polarity setting and press ‘Update’ button.
6. Move the aps using the ap switch installed in your aircraft. If the
aps move backwards, then the ap switch inputs are reversed.
7. If a POS-12 is installed, verify the number next to the ‘Position:’ label
(under ap status section) changes as you move the aps. This
number could range between about 0 and 255 as move the aps
through their FULL travel range.
8. If the position value does not change, then the position sensor wiring
is incorrect.
9. The number SHOULD ACTUALLY span a smaller range of 20 to 240
or so. If it goes all the way to either 0 or 255 then the sensor has
hit its limit and you won’t get an accurate reading at the endpoints,
which is important. Change the mechanical linkage so that the
sensor does not hit its limits.
10. Run the aps up and record the top position reading on paper. This is
a number between 0 and 255.
11. Run the aps to each intermediate stop (if any) and record the
position reading(s) on paper.
12. Run the aps to the bottom position and record the bottom position
reading on paper.
13. If you have the ap system in ‘Momentary’ the position values are
used only to display the ap position on the EFIS. However, if you
want to use the ‘Position’ mode, then the position values are used to
stop the ap motor at the top, middle, and bottom positions.
14. In some instances the top position may be near the 0 value, or it
may be near the 255 value. It just depends on how the mechanical
linkage is designed. Either way is ne. The bottom position should be
on the opposite end of the 0-255 range from the top position.
15. The position sensor combined with the mechanical linkage has
some slop in it. To account for this slop, the VP-X can run the ap
motor slightly longer than needed so that the aps are fully retracted.
To accomplish this, set the ‘End Duration” to 0.5. This will run the
aps for an extra half second at both the top and bottom limits, when
in position mode.
16. Set the top, bottom, and midpoint values in the congurator. We will
use an example here, but your values may be on the opposite end
of the scale. If the top value you recorded above is 10, then set the
value to 20. The end duration should run it up to 10, as it will run for
one half second past when it reaches 20. You can then adjust the
numbers as necessary.
17. Enter the mid-point values exactly as you recorded them above.
18. The bottom value is the trickiest to set correctly because the loading
on the aps is different in the air than on the ground, so the down
value may be different in each case.
19. If the recorded down value is, for example, 240 on the ground, it
might be 235 in the air because the air loads on the aps do not
allow the aps to fully extend as they do on the ground. To solve this
using this example, set the down value to 230. The system will then
run the aps for half a second after it reaches 230. If the down value
were to be set at 240, the position sensor may never report 240 and
only get to 235 which causes the ap motor run-on protection to trip
the aps after running for 45 seconds.
20. For the rst few ights we recommend running the ap system in
‘Momentary’ mode. After you are comfortable with the airplane, then
set it to ‘Position’ if so desired.
21. Set the ap system to ‘Position’ and press ‘Update’ button.