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nuckolls.bob(at)aeroelect
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 Posted: Tue Jul 29, 2014 9:56 am Post subject: Garmin 430W - Comm & Nav Power from Separate Busses |
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To: aeroelectric-list(at)matronics.com
Subject: Re: Garmin 430W - Comm & Nav Power from Separate Busses
At 04:24 PM 7/26/2014, you wrote:
--> AeroElectric-List message posted by: Buckley William <hoverandwire(at)yahoo.com>
99,
Using the AeroElectric Z-11 schematic, I plan to supply the Nav side of the Garmin 430W from the Essential buss and the Comm side from the Main buss. The Garmin install manual shows the comm and nav functions of the 430W to be powered by separate wires with separate circuit breakers. With my equipment list I don't need the comm function of the 430W during battery only operations but I do need to power the nav side. In an alternator failed situation with the master switch off and the Essential buss alternate switch on, any reason why the 430W nav (GPS & VOR/LOC) will not work with the comm side receiving no power?
Not that I know of . . .
This excerpt from 430W install manual states
that COM power is mere milliamps in receive
and significant only in transmit.
[img]cid:.0[/img]
How did your ENDURANCE load analysis come to suggest
that Com functions need not be part of an extended
battery-only ops scenario?
Bob . . .
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tim2542(at)sbcglobal.net
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| Posted: Tue Jul 29, 2014 8:39 pm Post subject: Garmin 430W - Comm & Nav Power from Separate Busses |
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It will work just fine with no power to the comm side, I do it all the time on my plane. It's set up to power the NAV side and one EFIS from a small aux batt circuit so they don't reboot after start, and as a backup for loss of the main bus.
Tim
On Jul 29, 2014, at 10:17 AM, "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
[quote] To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)
Subject: Re: Garmin 430W - Comm & Nav Power from Separate Busses
At 04:24 PM 7/26/2014, you wrote:
--> AeroElectric-List message posted by: Buckley William <hoverandwire(at)yahoo.com (hoverandwire(at)yahoo.com)>
99,
Using the AeroElectric Z-11 schematic, I plan to supply the Nav side of the Garmin 430W from the Essential buss and the Comm side from the Main buss. The Garmin install manual shows the comm and nav functions of the 430W to be powered by separate wires with separate circuit breakers. With my equipment list I don't need the comm function of the 430W during battery only operations but I do need to power the nav side. In an alternator failed situation with the master switch off and the Essential buss alternate switch on, any reason why the 430W nav (GPS & VOR/LOC) will not work with the comm side receiving no power?
Not that I know of . . .
This excerpt from 430W install manual states
that COM power is mere milliamps in receive
and significant only in transmit.
<32eb7351.jpg>
How did your ENDURANCE load analysis come to suggest
that Com functions need not be part of an extended
battery-only ops scenario?
Bob . . .
[b]
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Uncle
Joined: 04 Oct 2011
Posts: 10
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| Posted: Wed Jul 30, 2014 3:27 am Post subject: Garmin 430W - Comm & Nav Power from Separate Busses |
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Bob,
To your question: As currently designed, the equipment list in my panel has the comm side of the 430 as comm#2 and the nav functions of the 430 as the primary navigation source. With an alternator failure, I want comm#2 to be among the equipment that gets dropped while keeping the navigation functions. The comm functions will be handled by a different transceiver as comm#1.
And why not make the 430 the primary comm and nav source? ...Budget. I'd like to have the full compliment of panel equipment on day one but its likely that the 430 will be added later. Starting out with only VFR capability and I'm planning for the full enchilada later.
Thanks,
William B.
--- On Tue, 7/29/14, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:
| Quote: |
How did your ENDURANCE load analysis come to suggest
that Com functions need not be part of an extended
battery-only ops scenario?
|
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