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bo124rs(at)hotmail.com
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 Posted: Wed Nov 22, 2006 5:57 pm Post subject: Dynon electrical questions |
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First off, Happy Thanksgiving everyone.
Working on the final sensor hookups firewall forward and have a couple
questions for you Dynon installers.
Dynon list pins 5,16 & 17 as shared sensor grounds with pin 3 being the
avionics bus ground. I wired in the fuel pressure sensor and simply ran a
ground from the sensor to the my ground bus and grounded using the 5,16, 17.
I got the same 0 reading both ways on the screen. Any problem going directly
to the bus? The reason I ask, if I add something in the future and use up
5,16 and 17 on my initial install, I want to be able to have an out without
splicing.
Pin 18 is the +5V excitation wire for sensors such as carb temp and manifold
pressure. Since this is only one wire, I was thinking of using a small bus
bar to leave open future possibilities. Anyone got any pics of a simple
splice?
Getting close and loving it.
Just a hint http://rvflying.tripod.com/blackwing1.jpg
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
O 360 A1A, C/S C2YK-1BF/F7666A4
http://rvflying.tripod.com/id30.html
do not archive
_________________________________________________________________
MSN Shopping has everything on your holiday list. Get expert picks by style,
age, and price. Try it!
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charlieray(at)optonline.n
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| Posted: Thu Nov 23, 2006 5:52 am Post subject: Dynon electrical questions |
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I would seriously consider using the signal grounds the way shown on the
print and not tying them to airframe ground. With noise on the power bus
and return flow currents flowing through the skin of the aircraft, even
though you are reading 0 on your meter now, there may be a difference in
potential or AC on the "ground" when you are running and flying. If you are
worried about having extra signal grounds available at the dynon for future
use, bring all your sensor signal grounds together and leave some extra
pigtails there about 4" long and cap them off with heat shrink after folding
the end of the wire over, this allows you to come back later and butt splice
or solder in without getting too crazy into the plug.
Charlie
---
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fstringham
Joined: 10 Jan 2006
Posts: 87
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| Posted: Thu Nov 23, 2006 7:09 am Post subject: Dynon electrical questions |
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Dana
Happy Thanksgiving to you and to all
I am going to solve the panel / audio portion grounding problem by using
Bob's suggestions found at http://www.aeroelectric.com/ under Whats
New...Chapter on Audio Systems...pages 11 -13.
Good Luck
Frank (at) SGU and SLC ......RV7A.....wiring/fiberglass.........$$$$$$$$$$$$$
| Quote: | From: "Dana Overall" <bo124rs(at)hotmail.com>
Reply-To: rv-list(at)matronics.com
To: rv-list(at)matronics.com
Subject: Dynon electrical questions
Date: Wed, 22 Nov 2006 20:56:28 -0500
First off, Happy Thanksgiving everyone.
Working on the final sensor hookups firewall forward and have a couple
questions for you Dynon installers.
Dynon list pins 5,16 & 17 as shared sensor grounds with pin 3 being the
avionics bus ground. I wired in the fuel pressure sensor and simply ran a
ground from the sensor to the my ground bus and grounded using the 5,16,
17. I got the same 0 reading both ways on the screen. Any problem going
directly to the bus? The reason I ask, if I add something in the future and
use up 5,16 and 17 on my initial install, I want to be able to have an out
without splicing.
Pin 18 is the +5V excitation wire for sensors such as carb temp and
manifold pressure. Since this is only one wire, I was thinking of using a
small bus bar to leave open future possibilities. Anyone got any pics of a
simple splice?
Getting close and loving it.
Just a hint http://rvflying.tripod.com/blackwing1.jpg
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
O 360 A1A, C/S C2YK-1BF/F7666A4
http://rvflying.tripod.com/id30.html
do not archive
_________________________________________________________________
MSN Shopping has everything on your holiday list. Get expert picks by
style, age, and price. Try it!
http://shopping.msn.com/content/shp/?ctId=8000,ptnrid=176,ptnrdata 0601&tcode=wlmtagline
|
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