Today's Message Index:
----------------------
1. 12:56 PM - Re: Powering the EFIS system (Carlos Trigo)
2. 01:09 PM - Re: Powering the EFIS system (Stein Bruch)
3. 01:28 PM - Re: Powering the EFIS system (Carl Froehlich)
4. 02:11 PM - Re: Powering the EFIS system (Stein Bruch)
5. 02:19 PM - Re: Powering the EFIS system (David Clifford)
6. 04:14 PM - Re: Powering the EFIS system (Danny Riggs)
7. 06:33 PM - Re: Powering the EFIS system (Bob Turner)
8. 07:02 PM - Re: Re: Powering the EFIS system (Linn Walters)
Message 1
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| Subject: | Powering the EFIS system |
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
Cheers
Carlos
From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@m
atronics.com] On Behalf Of davidsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block. M
y single avionics switch operates a miniature 30 amp relay that powers the
block.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo <trigo@mail.telepac.pt>
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10, and
I have to put power into (not more not less than) 12 devices (2 Display un
its, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the power
circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am le
aning to agree, not including that single point of failure, but how about t
he distribution system?
I am not searching for opinions on the breaker or fuses discussion, just to
know what other people did or recommend to do with busses and circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
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| Subject: | Powering the EFIS system |
While you can build this up yourself much cheaper (you can get a
standard relay with the diode in it for around $15 or so) , but
basically this is the same thing we do for our customers and have
pre-wired it for them with the relay, buss bar, etc.. all ready to
go
http://steinair.com/storedetail.cfm?productid=672
Cheers,
Stein
Do not archive
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Carlos Trigo
Sent: Wednesday, April 20, 2016 5:26 AM
Subject: RE: RV10-List: Powering the EFIS system
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
Cheers
Carlos
From: owner-rv10-list-server@matronics.com
<mailto:owner-rv10-list-server@matronics.com>
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of davidsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block.
My single avionics switch operates a miniature 30 amp relay that powers
the block.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo <trigo@mail.telepac.pt <mailto:trigo@mail.telepac.pt>
>
<mailto:aeroelectric-list@matronics.com> , rv10-list@matronics.com
<mailto:rv10-list@matronics.com>
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10,
and I have to put power into (not more not less than) 12 devices (2
Display units, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the
power circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am
leaning to agree, not including that single point of failure, but how
about the distribution system?
I am not searching for opinions on the breaker or fuses discussion, just
to know what other people did or recommend to do with busses and
circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient>
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| Subject: | Powering the EFIS system |
Stein,
As you promote an avionics relay type approach, I=99d appreciate
an understanding of why one would want to use this or any
=9Cavionics master=9D switch scheme. As far as I can see
this adds a unnecessary common failure mode for loss of the panel.
Carl
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Stein Bruch
Sent: Wednesday, April 20, 2016 4:08 PM
Subject: RE: RV10-List: Powering the EFIS system
While you can build this up yourself much cheaper (you can get a
standard relay with the diode in it for around $15 or so) , but
basically this is the same thing we do for our customers and have
pre-wired it for them with the relay, buss bar, etc.. all ready to
go
http://steinair.com/storedetail.cfm?productid=672
Cheers,
Stein
Do not archive
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Carlos Trigo
Sent: Wednesday, April 20, 2016 5:26 AM
Subject: RE: RV10-List: Powering the EFIS system
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
Cheers
Carlos
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of davidsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block.
My single avionics switch operates a miniature 30 amp relay that powers
the block.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo <trigo@mail.telepac.pt>
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10,
and I have to put power into (not more not less than) 12 devices (2
Display units, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the
power circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am
leaning to agree, not including that single point of failure, but how
about the distribution system?
I am not searching for opinions on the breaker or fuses discussion, just
to know what other people did or recommend to do with busses and
circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient>
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| Subject: | Powering the EFIS system |
I really don=99t desire to get into that primer war! :)
That said, if you desire to have an avionics master switch (which
I=99m not necessarily promoting or not promoting) a relay is
almost always a =9Cmust=9D because most switches are not
rated to handle that current load. Of course you can design a system so
as to not need or want an avionics master, but if you do then a relay is
usually (not always) a good idea. If you want an avionics master and
your system is designed for one, then go for it. If you don=99t
want one or design around it, then don=99t use one
Is that enough of a politicians answer!?!?! Ha!
Cheers,
Stein
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Carl
Froehlich
Sent: Wednesday, April 20, 2016 3:28 PM
Subject: RE: RV10-List: Powering the EFIS system
Stein,
As you promote an avionics relay type approach, I=99d appreciate
an understanding of why one would want to use this or any
=9Cavionics master=9D switch scheme. As far as I can see
this adds a unnecessary common failure mode for loss of the panel.
Carl
From: owner-rv10-list-server@matronics.com
<mailto:owner-rv10-list-server@matronics.com>
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Stein Bruch
Sent: Wednesday, April 20, 2016 4:08 PM
Subject: RE: RV10-List: Powering the EFIS system
While you can build this up yourself much cheaper (you can get a
standard relay with the diode in it for around $15 or so) , but
basically this is the same thing we do for our customers and have
pre-wired it for them with the relay, buss bar, etc.. all ready to
go
http://steinair.com/storedetail.cfm?productid=672
Cheers,
Stein
Do not archive
From: owner-rv10-list-server@matronics.com
<mailto:owner-rv10-list-server@matronics.com>
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Carlos Trigo
Sent: Wednesday, April 20, 2016 5:26 AM
Subject: RE: RV10-List: Powering the EFIS system
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
Cheers
Carlos
From: owner-rv10-list-server@matronics.com
<mailto:owner-rv10-list-server@matronics.com>
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of davidsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block.
My single avionics switch operates a miniature 30 amp relay that powers
the block.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo <trigo@mail.telepac.pt <mailto:trigo@mail.telepac.pt>
>
<mailto:aeroelectric-list@matronics.com> , rv10-list@matronics.com
<mailto:rv10-list@matronics.com>
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10,
and I have to put power into (not more not less than) 12 devices (2
Display units, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the
power circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am
leaning to agree, not including that single point of failure, but how
about the distribution system?
I am not searching for opinions on the breaker or fuses discussion, just
to know what other people did or recommend to do with busses and
circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient>
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Message 5
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| Subject: | Re: Powering the EFIS system |
I used one of these I had laying around from another project. Its mounted b
ehind the IP on the sub-panel, and is wired with 10 gauge from my main 12 v
olt power stud to the fuse block. Fuse blocks I used are from Steinair. The
fuse blocks are mounted also behind the IP on the sub-panel. Fuse blocks a
re behind the pilot side accessible by removing the GDU 370 & GDU 375 displ
ays. Sorry but I don't have a picture handy
----- Original Message -----
From: "Carlos Trigo" <trigo@mail.telepac.pt>
Sent: Wednesday, April 20, 2016 6:26:19 AM
Subject: RE: RV10-List: Powering the EFIS system
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
Cheers
Carlos
From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@m
atronics.com] On Behalf Of davidsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block. My
single avionics switch operates a miniature 30 amp relay that powers the b
lock.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo < trigo@mail.telepac.pt >
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10, and
I have to put power into (not more not less than) 12 devices (2 Display un
its, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the power
circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am le
aning to agree, not including that single point of failure, but how about t
he distribution system?
I am not searching for opinions on the breaker or fuses discussion, just to
know what other people did or recommend to do with busses and circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
Sem v=C3=ADrus. www.avast.com
Sem v=C3=ADrus. www.avast.com
Message 6
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| Subject: | Re: Powering the EFIS system |
Relays are really pretty reliable. Also are very much cheaper than the elec
tronic systems. Spend $15 for and extra one and carry it with you as a spar
e.
Sent from my iPhone
On Apr 20, 2016, at 2:15 PM, Stein Bruch <stein@steinair.com<mailto:stein@s
teinair.com>> wrote:
I really don=92t desire to get into that primer war! :)
That said, if you desire to have an avionics master switch (which I=92m not
necessarily promoting or not promoting) a relay is almost always a =93must
=94 because most switches are not rated to handle that current load. Of cou
rse you can design a system so as to not need or want an avionics master, b
ut if you do then a relay is usually (not always) a good idea. If you want
an avionics master and your system is designed for one, then go for it. If
you don=92t want one or design around it, then don=92t use one=85
Is that enough of a politicians answer!?!?! Ha!
Cheers,
Stein
From: owner-rv10-list-server@matronics.com<mailto:owner-rv10-list-server@ma
tronics.com> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Car
l Froehlich
Sent: Wednesday, April 20, 2016 3:28 PM
Subject: RE: RV10-List: Powering the EFIS system
Stein,
As you promote an avionics relay type approach, I=92d appreciate an underst
anding of why one would want to use this or any =93avionics master=94 switc
h scheme. As far as I can see this adds a unnecessary common failure mode
for loss of the panel.
Carl
From: owner-rv10-list-server@matronics.com<mailto:owner-rv10-list-server@ma
tronics.com> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Ste
in Bruch
Sent: Wednesday, April 20, 2016 4:08 PM
Subject: RE: RV10-List: Powering the EFIS system
While you can build this up yourself much cheaper (you can get a standard r
elay with the diode in it for around $15 or so) , but basically this is the
same thing we do for our customers and have pre-wired it for them with the
relay, buss bar, etc.. all ready to go=85
http://steinair.com/storedetail.cfm?productid=672
Cheers,
Stein
Do not archive
From: owner-rv10-list-server@matronics.com<mailto:owner-rv10-list-server@ma
tronics.com> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Car
los Trigo
Sent: Wednesday, April 20, 2016 5:26 AM
Subject: RE: RV10-List: Powering the EFIS system
Thank you David
Please indicate the part# and source for the miniature relay you used.
And a picture of your fuse block installation would also be very welcome
=85
Cheers
Carlos
From: owner-rv10-list-server@matronics.com<mailto:owner-rv10-list-server@ma
tronics.com> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of dav
idsoutpost
Sent: quarta-feira, 20 de Abril de 2016 03:18
Subject: RE: RV10-List: Powering the EFIS system
All my avionics operate off a separate buss which is a blade fuse block. M
y single avionics switch operates a miniature 30 amp relay that powers the
block.
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Carlos Trigo <trigo@mail.telepac.pt<mailto:trigo@mail.telepac.pt>>
, rv10-list@matronics.com<mailto:rv10-list@matronics.com>
Subject: RV10-List: Powering the EFIS system
Group
I am beginning to install the EFIS G3X system from GARMIN in the RV-10, and
I have to put power into (not more not less than) 12 devices (2 Display un
its, 2 ADAHRS, 1 engine module, 3 autopilot servos and so on).
In some devices there are 2 independent power inputs.
I am trying to figure out which will be the best architecture for the power
circuits to these 12 devices.
I know that some of you are against the single Avionics switch, and I am le
aning to agree, not including that single point of failure, but how about t
he distribution system?
I am not searching for opinions on the breaker or fuses discussion, just to
know what other people did or recommend to do with busses and circuits.
I should add that I have a dual battery /dual alternator energy system.
All good suggestions welcome!
Thanks
Carlos
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range-v1.png]<https://www.avast.com/sig-email?utm_medium=email&utm_source
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Message 7
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| Subject: | Re: Powering the EFIS system |
I don't like the 'wire the relay backwards (avionics on when relay off)' approach.
1. Every time you turn on the master you give your radios a short pulse of power
(until the relay pulls up)
2. If your starter pulls enough current to result in 'brown-out (significant drop
in buss voltage) your avionics power relay may drop out at exactly the wrong
time - subjecting your avionics to a low voltage. Some modern avionics do not
tolerate low input voltages very well.
At the least I'd look for a relay with low drop out voltage ratings.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=455271#455271
Message 8
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| Subject: | Re: Powering the EFIS system |
On 4/20/2016 9:32 PM, Bob Turner wrote:
>
> I don't like the 'wire the relay backwards (avionics on when relay off)' approach.
That's OK too. I'd hate to have a failure of either the switch or relay
..... wired conventionally ..... that killed all my avionics.
> 1. Every time you turn on the master you give your radios a short pulse of power
(until the relay pulls up)
I've never hung a 'scope on the avionics buss, but I suspect the
avionics inrush current would keep that pulse rather small.
> 2. If your starter pulls enough current to result in 'brown-out (significant
drop in buss voltage) your avionics power relay may drop out at exactly the wrong
time - subjecting your avionics to a low voltage. Some modern avionics do
not tolerate low input voltages very well.
I have 'exit sign' batteries for each of my two EFIS panels as backups
for alternator/ships battery failure. I can power up the EFIS without
turning on ships power. No brownout, no reboot no matter how low the
ships power gets.
> At the least I'd look for a relay with low drop out voltage ratings.
Not a bad idea.
Linn
>
> --------
> Bob Turner
> RV-10 QB
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=455271#455271
>
>
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