Configuration setting for Aspen EFD to IFD540
Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=2313
Printed Date: 28 Apr 2025 at 8:27pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: Configuration setting for Aspen EFD to IFD540
Posted By: jdojr
Subject: Configuration setting for Aspen EFD to IFD540
Date Posted: 17 Jan 2022 at 6:15pm
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I am looking for help in setting up the configuration settings to enable an Aspen EFD to send wind info to a IFD540. Currently the Aspen and IFD "talk" to each other via 429 communications. The IFD sends route and traffic info to the Aspen. I would like the IFD to receive wind info in order to have more accurate fuel rings. Thanks.
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Replies:
Posted By: paulr
Date Posted: 18 Jan 2022 at 8:34am
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I'm not sure that the IFD uses the wind info for the range-ring calculation-- I think it's based only on GPS groundspeed. The wind data is super useful, but, at least for me, I don't use it much on the IFD since it's already displayed on the PFD. The big win you'll get from bringing Aspen air data to the IFD will be auto-sequencing of missed approach legs that require baro altitude. In my plane, which has an ACU1, we had to do some wiring trickery to get the air data from the Aspen back to the IFD-- it wasn't just a matter of configuration. I've been looking for the thread here that talks about what has to be done, but I haven't found it yet.
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Posted By: MikeS
Date Posted: 18 Jan 2022 at 9:41am
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Paul, You likely had to bypass the ACU to get the labels back into the IFD that the ACU, for some reason, strips out of the 429 stream:
https://www.youtube.com/watch?v=YAJ7t8ohVhQ&t=1000s
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Posted By: skitheo
Date Posted: 29 Jan 2022 at 3:51pm
First of all, that should have been verified in the ground checkout on the installation. If wired correctly, the Aspen MAX should have 429 IN PORT 1: GPS1 on NAV SET UP B page. NAV SET UP C page 429 IN PORTS XXX SPEED should match IFD 540 "Main ARINC 429 Config" Out (1 or 2) speed column. EFD NAV SET UP C - 429 OUT PORT SPEED should match IFD 540 In speed column for the appropriate port. IFD 540 "Main ARINC 429 Config" page should have "Honeywell EFIS" set in the DATA column for the "In" signal from the Aspen, and "GAMA 429 Graphics w/Int" for the "Out" signal. That should suffice. I also have Aspen RS232 OUT PORT 3: ADC TYPE 1 connected to IFD 540 Main RS232 Config CHNL3 Input "Shadin-adc". This is likely not needed. You really need to be looking at your schematics and Install Manuals to be certain. If the above checks out and your AUX->Util->Calculators->Wind calculator doesn't display the correct altitude when powered up on the ground, you may have a bad connection. If it does display, then you should get winds computed on both Aspen & IFD540. I use both wind indicators: Aspen is set up with mph due to the AFM of the airframe. IFD is configured to display Kts for PIREPS.
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jdojr wrote:Posted By: jhbehrens
Date Posted: 04 Feb 2022 at 6:54am
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@jdodr Do you have an ACU? Because if you do, it doesn't pass air data from the Aspen to the IFD, you will need to bypass it with 2 wires (ie connect both the ACU and the IFD to pins 26/27 on the EFD1000. That will then give the IFD TAS which it can use to calculate wind. Tell your installer to check footnote 2 on figure 9-28A in the Aspen Install Manual, If you have an ACU2, it should pass through TAS. If you don't have an ACU, it should also be passed to the IFD. In either of these cases I would suspect a settings incompatibility between Aspen and IFD, such as 2 different speeds set. An ACU2 doesn't pass the heading bug to the IDF. If you want that displayed, you need to do the same bypass as with the regular ACU.
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Posted By: jdojr
Date Posted: 04 Feb 2022 at 6:01pm
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Thank you guys. That's just the info that I was looking for. This really helps. Dean Ousley
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