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What is needed to display wind vector on IFD540 |
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cavu 
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Joined: 17 Apr 2015 Location: KRME Status: Offline Points: 152 |
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 Topic: What is needed to display wind vector on IFD540Posted: 31 Jul 2019 at 7:55pm |
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What Air Data Computers are compatible with IFD540 so that the IFD can show wind vector calculation in Wind Data Block?
Will a Garmin G5 do that? If so, does it need an add-on module?
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wb8wka
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Posted: 01 Aug 2019 at 12:33am |
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I had the same question, at the time I installed things (a year ago) the G5 wouldn't play nice with the IFD's, I got a Sandi SAC 7-35 and it seems to work well with the IFD550. I even get speed and altitude tapes on the IFD100.
Looking at the install manual and doing a quick search, I don't think the G5 outputs air data information, even though it uses it internally. Wish it did. Edited by wb8wka - 01 Aug 2019 at 12:34am |
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bneub111
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Posted: 01 Aug 2019 at 2:42pm |
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There is a new GAD13 module that gives OAT to the G5. With that, the G5 will give wind vectors and some other info. Since I have two G5’s I’m curious to see what data will show up in my 540 if/when I install the GAD13.
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wb8wka
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Posted: 01 Aug 2019 at 3:14pm |
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It's got to OUTPUT air data to the IFD550/540/440. A year and a few months ago I was all ready to buy a Aspen E5... which claims it's also a Air Data Computer (ADC), but it only uses it internally for the display. To get ADC out, you had to upgrade to the $10,000 model. At that time the Garmin G5 was the same... ADC only for internal use. The Sandi SAC 7-35 was the lowest cost solution that would give me what CAVU is asking for.
That said, if you find out the G5 does now output ADC information, which there is no reason it shouldn't, let me know. I'll buy one in a heart beat. I checked the install manual last night and it still didn't seem to. Edited by wb8wka - 01 Aug 2019 at 3:14pm |
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arkvet
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Posted: 01 Aug 2019 at 3:30pm |
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I’ve got dual G5’s as well and an IFD 550. I’m intrigued by G’s new GAD13 as well. Having wind data on the G5 would be nice but if that wind data (and subsequent airspeed rather than groundspeed) could be displayed on the 550 SV page that would be super awesome.
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Brent
PA32-301 IFD550 / AXP322 / SkyTrax100 / Dual G5's / GFC 500 / JPI 830 |
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CubedRoot
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Posted: 02 Aug 2019 at 2:52am |
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I've got an Aspen E5 in my panel, Its supposedly been wired into my IFD540. How can I tell what data is being (or should be) sent from my Aspen to the IFD?
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Flybuddy
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Posted: 02 Aug 2019 at 6:10am |
I've got the E5 with a 440..I think the data is pretty much a one way street. E5 gets data from Avidyne (CDI and GS) but nothing the other way.
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ddgates
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Posted: 02 Aug 2019 at 8:30am |
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We went through this before with the Aspen pro, which may be relevant.
If you have the airdate in the Aspen output stream (as ARINC 429), and it goes through an ACU, only limited labels are passed through. That list was posted by Jake a few years ago on this board, and can be found by a search. The verbiage of the previous Aspen IM did not permit a direct connection though the data was there; ultimately Aspen revised its IM and that connection was permitted. In my case I needed the ACU to connect to my analog autopilot; the workaround we did was to change the connection to parallel, bypassing the ACU in the IFD data stream. Thus; my IFD540s get airdata. I don't know if this is applicable to the E5, but it might relate. Anyway, my Aspen Pro EFD is the data source which allows my IFDs to calculate a wind vector. YMMV.
Edited by ddgates - 02 Aug 2019 at 8:32am |
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David Gates
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Flybuddy
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Posted: 02 Aug 2019 at 10:58am |
Interesting, thanks for posting...Where does the Aspen Pro get its OAT info from to pass on, does it have an external temp probe?
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oskrypuch
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Posted: 02 Aug 2019 at 11:55am |
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The ASPEN has an OAT sensor in the RSM. When the paperwork allowed, I did exactly the same thing that ddgates describes. Parallel out the 429 connection to the IFD, to bypass the ACU. * Orest
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CubedRoot
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Posted: 02 Aug 2019 at 12:14pm |
I wonder if the same holds true for the E5? It doesn't ship with an ACU, and I also wonder if the E5 RSM contains an OAT probe as well? |
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oskrypuch
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Posted: 02 Aug 2019 at 12:57pm |
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The E5 RSM is different from the regular Pro/MAX unit, but I believe it lacks only the GPS sensor, which is used for emergency reversion. That said, the STC has been extended by now, and you can install the regular, full package, "Pro/MAX" RSM with GPS/magnotometer/OAT even if you install an E5 -- obviously you could upgrade to the MAX at some time in the future. * Orest
Edited by oskrypuch - 02 Aug 2019 at 12:57pm |
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matthewsjl
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Posted: 03 Aug 2019 at 11:21am |
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This is the modification to the Aspen wiring to get the labels across to the GPS (this mod was used on the GNS-480 to get the baro to push across and carried over to the IFD-540 and I get wind data). The difference from the standard diagram is that you don't use the ACU pins 4/5 to feed the GPS but piggy back off the lines coming from the PFD1000 to the ACU. I think there are more labels available from the PFD vs the ACU.
 During my installation, I spoke to my Aspen rep and he mentioned wiring an RS-232 from the PFD to the GPS. There seem to be more/additional labels on the RS-232 output that could be used....... this is actually in the Aspen IM:   Aspen have said that wiring both is per the IM and that there won't be a conflict. The IFD should just use the latest information for a label block as received by either the 429 or 232 lines. John
Edited by matthewsjl - 03 Aug 2019 at 11:26am |
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ddgates
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Posted: 03 Aug 2019 at 12:29pm |
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Yes, the ACU-1 truncates the 429 data stream to, as I recall, 4 labels. The ACU-II (more $$) passes them through.
Paralelling the PFD output bypassing the Aspen --> IFD connection avoids that.
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David Gates
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Paul
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Posted: 23 Feb 2020 at 9:57am |
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The E5 now has an unlock for air data: https://aspenavionics.com/news/aspen-avionics-announces-new-features-and-functions-for-the-evolution-e5-electronic-flight-instrument-efi/ What would this enable on the IFD 540?
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chflyer
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Posted: 01 Mar 2020 at 6:05am |
Do you have an update on this? Did you install the GAD13 and what does the G5/GAD13 now give you on the IFD? G5 is on the CAN bus so output to other devices such as the IFD need an additional GAD29(B) which converts the CAN bus data to Arinc 429 output, which is what I assume you currently have/had pre-GAD13.
I frankly don't understand why Avidyne doesn't publish a list of the Arinc labels that it needs and/or uses as ADC/EFIS input, rather than just listing devices that it supports as sources. That would make planning for purchase decision-making much easier given the dynamic nature of developments in this area. As far as I know, wind vector is not in itself transmitted between devices, rather it is calculated based on TAS and Heading (per IFD UG). The G5 needs OAT in order to calculate and output TAS on Arinc 429. Edited by chflyer - 01 Mar 2020 at 6:05am |
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Vince
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skitheo
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Posted: 14 Mar 2020 at 1:54pm |
I don't think it enables anything new in the IFD, just the display of air data info on the E5. You should already have all of the air data going from the Aspen to the IFD so it can calculate TAS/DA/Wind calculator and datablock, provided you have both the ARINC 429 in (set to Honeywell EFIS) and RS-232 in (set to Shadin-fadc). You also should already have the ability to auto-sequence missed approaches due to detecting airspeed/pressure altitude.
Edited by skitheo - 14 Mar 2020 at 1:56pm |
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9krpm
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Posted: 01 Apr 2020 at 5:06pm |
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Does the Dynon HDX transmit this info to the IFD540?
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skitheo
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Posted: 01 Apr 2020 at 5:58pm |
If your installation includes the ARINC 429 and RS-232 lines out of the HDX into the IFD, then yes. This information stream is required for auto-sequencing missed approach procedures, in addition to the calculators.
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CubedRoot wrote: