AeroElectric-List Digest Archive

Sat 04/16/11


Total Messages Posted: 6



Today's Message Index:
----------------------
 
     1. 04:36 AM - GNS430 Communication Voltage- 14v or 28v? ()
     2. 08:07 AM - Re: GNS430 Communication Voltage- 14v or 28v? (Jared Yates)
     3. 08:12 AM - Re: GNS430 Communication Voltage- 14v or 28v? (Jared Yates)
     4. 08:22 AM - Re: GNS430 Communication Voltage- 14v or 28v? (Jared Yates)
     5. 09:38 AM - Re: GNS430 Communication Voltage- 14v or 28v? (Tim Andres)
     6. 10:03 AM - Re: GNS430 Communication Voltage- 14v or 28v? (Jared Yates)
 
 
 


Message 1


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    Time: 04:36:47 AM PST US
    From: <bakerocb@cox.net>
    Subject: GNS430 Communication Voltage- 14v or 28v?
    4/16/2011 Hello Jared, You wrote: 1) "Does anyone know when the change happened?" See this announcement from Garmin: http://www8.garmin.com/pressroom/aviation/072600.html 2) "For instance, do all of the old non-waas units have this 28-volt communication requirement,...?" No. Only the original 430 units required 28 volts. As described in the announcement after Garmin created the 14/28 version of the GNS 430 one could use either 14 or 28 volts. 3) "... is there a mod that makes some of the non-w units (hopefully mine) 14-volt capable?" If you have an original GNS 430 28 volt only version an external 14 to 28 volt converter will be required to make that 28 volt version work in a 14 volt airplane. Note this statement: "Garmin ended factory support for the 28 volt-only GNS-430 on September 30,2010. The 14/28 volt version remains fully supported." On this web page: http://www.bennettavionics.com/gns430-28v.html I suggest that you contact the Gamin tech people, give them your unit serial number, and find out whether you have a 28 volt only unit or a 14/28 volt unit. Good luck. 'OC' Baker Says: "The best investment we can make is the time and effort to gather and understand knowledge." =========================================================== Time: 10:38:13 PM PST US Subject: AeroElectric-List: GNS430 Communication Voltage- 14v or 28v? From: Jared Yates <email@jaredyates.com> I'm wiring my 14-volt panel, which includes a Garmin GNS430, non-WAAS "legacy" version, and I am looking for advice from someone who is familiar with the development timeline. I have an older hard copy of an installation manual that says that the aircraft power on the P4002 (Communications) connector must be at 28 volts. I noticed in the more recent 430W installation manual that only the "A" high power units have this 28-volt requirement. Does anyone know when the change happened? For instance, do all of the old non-waas units have this 28-volt communication requirement, or is there a mod that makes some of the non-w units (hopefully mine) 14-volt capable? The placard on the unit says that it is up to mod level 5, and I have a list of all of the various service bulletins that have been applied to it, in case any of that might help.


    Message 2


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    Time: 08:07:43 AM PST US
    Subject: Re: GNS430 Communication Voltage- 14v or 28v?
    From: Jared Yates <email@jaredyates.com>
    Thanks for the information, I'll call them on Monday. The placard on the unit says 14/28v, but I didn't know if that meant 14 volts for everything except comm and 28 volts for com, or if that meant 14-28 volt input range for all of the inputs. I'm glad to hear that the change was so long ago, though that doesn't say much for the status of my installation manual. On Sat, Apr 16, 2011 at 7:32 AM, <bakerocb@cox.net> wrote: > > 4/16/2011 > > Hello Jared, You wrote: > > 1) "Does anyone know when the change happened?" > > See this announcement from Garmin: > > http://www8.garmin.com/pressroom/aviation/072600.html > > 2) "For instance, do all of the old non-waas units have this 28-volt > communication requirement,...?" > > No. Only the original 430 units required 28 volts. As described in the > announcement after Garmin created the 14/28 version of the GNS 430 one could > use either 14 or 28 volts. > > 3) "... is there a mod that makes some of the non-w units (hopefully mine) > 14-volt capable?" > > If you have an original GNS 430 28 volt only version an external 14 to 28 > volt converter will be required to make that 28 volt version work in a 14 > volt airplane. > > Note this statement: "Garmin ended factory support for the 28 volt-only > GNS-430 on September 30,2010. The 14/28 volt version remains fully > supported." On this web page: > > http://www.bennettavionics.com/gns430-28v.html > > I suggest that you contact the Gamin tech people, give them your unit > serial number, and find out whether you have a 28 volt only unit or a 14/28 > volt unit. Good luck. > > 'OC' Baker Says: "The best investment we can make is the time and effort to > gather and understand knowledge." > > =========================================================== > > > Time: 10:38:13 PM PST US > Subject: AeroElectric-List: GNS430 Communication Voltage- 14v or 28v? > From: Jared Yates <email@jaredyates.com> > > I'm wiring my 14-volt panel, which includes a Garmin GNS430, non-WAAS > "legacy" version, and I am looking for advice from someone who is familiar > with the development timeline. I have an older hard copy of an > installation > manual that says that the aircraft power on the P4002 (Communications) > connector must be at 28 volts. I noticed in the more recent 430W > installation manual that only the "A" high power units have this 28-volt > requirement. Does anyone know when the change happened? For instance, do > all of the old non-waas units have this 28-volt communication requirement, > or is there a mod that makes some of the non-w units (hopefully mine) > 14-volt capable? The placard on the unit says that it is up to mod level > 5, > and I have a list of all of the various service bulletins that have been > applied to it, in case any of that might help. > >


    Message 3


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    Time: 08:12:49 AM PST US
    Subject: Re: GNS430 Communication Voltage- 14v or 28v?
    From: Jared Yates <email@jaredyates.com>
    For anyone else who might have this same question, I've just found the answer in a newer installation manual the Bob L. sent me. Garmin changed the part numbers, so part number 011-00280-10 accepts 11-33 volts on all inputs, while part number 011-00280-00 requires the converter. Fortunately mine is the -10 series. On Sat, Apr 16, 2011 at 1:34 AM, Jared Yates <email@jaredyates.com> wrote: > I'm wiring my 14-volt panel, which includes a Garmin GNS430, non-WAAS > "legacy" version, and I am looking for advice from someone who is familiar > with the development timeline. I have an older hard copy of an installation > manual that says that the aircraft power on the P4002 (Communications) > connector must be at 28 volts. I noticed in the more recent 430W > installation manual that only the "A" high power units have this 28-volt > requirement. Does anyone know when the change happened? For instance, do > all of the old non-waas units have this 28-volt communication requirement, > or is there a mod that makes some of the non-w units (hopefully mine) > 14-volt capable? The placard on the unit says that it is up to mod level 5, > and I have a list of all of the various service bulletins that have been > applied to it, in case any of that might help. > > > * > > * > >


    Message 4


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    Time: 08:22:19 AM PST US
    Subject: Re: GNS430 Communication Voltage- 14v or 28v?
    From: Jared Yates <email@jaredyates.com>
    On a somewhat related note, how are you folks wiring the power inputs? I notice on the schematic that they show the redundant power sources tied together downstream of the circuit protection. Wouldn't it make more sense to run a separate fuse for each of the redundant sources? This would mean 6 fuses instead of 3, but wouldn't it eliminate a single failure point? On Sat, Apr 16, 2011 at 11:10 AM, Jared Yates <email@jaredyates.com> wrote: > For anyone else who might have this same question, I've just found the > answer in a newer installation manual the Bob L. sent me. Garmin changed > the part numbers, so part number 011-00280-10 accepts 11-33 volts on all > inputs, while part number 011-00280-00 requires the converter. Fortunately > mine is the -10 series. > > > On Sat, Apr 16, 2011 at 1:34 AM, Jared Yates <email@jaredyates.com> wrote: > >> I'm wiring my 14-volt panel, which includes a Garmin GNS430, non-WAAS >> "legacy" version, and I am looking for advice from someone who is familiar >> with the development timeline. I have an older hard copy of an installation >> manual that says that the aircraft power on the P4002 (Communications) >> connector must be at 28 volts. I noticed in the more recent 430W >> installation manual that only the "A" high power units have this 28-volt >> requirement. Does anyone know when the change happened? For instance, do >> all of the old non-waas units have this 28-volt communication requirement, >> or is there a mod that makes some of the non-w units (hopefully mine) >> 14-volt capable? The placard on the unit says that it is up to mod level 5, >> and I have a list of all of the various service bulletins that have been >> applied to it, in case any of that might help. >> >> >> * >> >> * >> >> >


    Message 5


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    Time: 09:38:14 AM PST US
    From: Tim Andres <tim2542@sbcglobal.net>
    Subject: Re: GNS430 Communication Voltage- 14v or 28v?
    On 4/16/2011 8:19 AM, Jared Yates wrote: > On a somewhat related note, how are you folks wiring the power inputs? > I notice on the schematic that they show the redundant power sources > tied together downstream of the circuit protection. Wouldn't it make > more sense to run a separate fuse for each of the redundant sources? > This would mean 6 fuses instead of 3, but wouldn't it eliminate a > single failure point?* > * I have seen professional harnesses and all they do is tie (solder seal) the 2 wires together just outside the connector. The feeds are diode isolated in the unit and I believe the intent is to be able to feed from 2 separate busses on on aircraft that have more than one power source. In my case, I used my AUX bus/batt. to enable my GRT EFIS and 430w to boot up and prior to engine start for flight planning etc. Since I used a Avionics switch this also gives a work around in case that switch fails. There are also separate feeds for NAV and Comm on these and this gives the installer some options on when & how to power it all up. The simplest thing is to just tie them all together and run it to your Avionics buss. Tim


    Message 6


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    Time: 10:03:30 AM PST US
    Subject: Re: GNS430 Communication Voltage- 14v or 28v?
    From: Jared Yates <email@jaredyates.com>
    I have in my notes that I was supposed to wire the inputs to the same bus, but I don't remember the source. I'm using Z13/8 with a *Schottky* diode and would be glad to split the power inputs between the main and ebus if that isn't going to cause any problems. I hadn't considered that option since I thought they all had to be on the same bus. On Sat, Apr 16, 2011 at 12:33 PM, Tim Andres <tim2542@sbcglobal.net> wrote: > On 4/16/2011 8:19 AM, Jared Yates wrote: > > On a somewhat related note, how are you folks wiring the power inputs? I > notice on the schematic that they show the redundant power sources tied > together downstream of the circuit protection. Wouldn't it make more sense > to run a separate fuse for each of the redundant sources? This would mean 6 > fuses instead of 3, but wouldn't it eliminate a single failure point?* > * > > I have seen professional harnesses and all they do is tie (solder seal) the > 2 wires together just outside the connector. The feeds are diode isolated > in the unit and I believe the intent is to be able to feed from 2 separate > busses on on aircraft that have more than one power source. In my case, I > used my AUX bus/batt. to enable my GRT EFIS and 430w to boot up and prior > to engine start for flight planning etc. Since I used a Avionics switch this > also gives a work around in case that switch fails. There are also separate > feeds for NAV and Comm on these and this gives the installer some options on > when & how to power it all up. The simplest thing is to just tie them all > together and run it to your Avionics buss. > > Tim > > * > > * > >




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