---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 06/14/20: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:03 AM - Re: Gerdes vs ACS key switch wiring (supik) 2. 07:46 AM - Re: Z101 with Rotax 915iS (user9253) 3. 07:50 AM - Re: Z101 with Rotax 915iS (user9253) 4. 08:52 AM - Re: Z101 with Rotax 915iS (user9253) ________________________________ Message 1 _____________________________________ Time: 04:03:02 AM PST US Subject: AeroElectric-List: Re: Gerdes vs ACS key switch wiring From: "supik" nuckolls.bob(at)aeroelect wrote: > At 10:00 AM 6/13/2020, you wrote: > > > > > I have the ACS 502 key switch and was wondering how to wire the center ground. > > > > B&C instructions for the GERDES key switch say DO NOT connect the center GND to any structural member in the cabin wheres the ACS instructions tell the opposite. > > > > ACS Note C: > > http://acsproducts.co/wp-content/uploads/2013/10/Wiring-Diagram.jpg (http://acsproducts.co/wp-content/uploads/2013/10/Wiring-Diagram.jpg) > > > > GERDES: > > https://bandc.com/wp-content/uploads/2019/03/s811-1_contactor_501-3_fig4.pdf (https://bandc.com/wp-content/uploads/2019/03/s811-1_contactor_501-3_fig4.pdf) > > There is no BENEFIT for connecting to ground locally . . . > but there is RISK for damaging p-lead shields due to > starter currents flowing in a ground-loop situation. > Wire per examples in the z-figures where shields are > terminated at the mags and NO grounds are added at > the switch(es) whether a o-l-r-b-s keyswitch or > toggles. > > > > Bob . . . Thank you! -------- Igor RV10 in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496830#496830 ________________________________ Message 2 _____________________________________ Time: 07:46:06 AM PST US Subject: AeroElectric-List: Re: Z101 with Rotax 915iS From: "user9253" Bob, I agree that the Rotax documentation needs improving. Something is lost in translation. Here is a link to the Rotax iS engine heavy maintenance manual. https://www.rotax-owner.com/pdf/MMH_915iASeries_ED0_R1.pdf Section 24-20-00 page 6 says, "The two 3-phase AC generators are physically separate power supplies which are integrated in the engine." But then in section 71-00-00 page 11 is says, "Integrated generator Permanent Magnet single-phase generator". So which is it, 3 phase or single phase. Looking at the picture of cable plugs, there are 3 wires, so it could be 3 phase. It looks like there are approximately 25 coils. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496832#496832 ________________________________ Message 3 _____________________________________ Time: 07:50:11 AM PST US Subject: AeroElectric-List: Re: Z101 with Rotax 915iS From: "user9253" Oops, my mistake. The link I posted above is for the 915 engine, not the 912. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496833#496833 ________________________________ Message 4 _____________________________________ Time: 08:52:01 AM PST US Subject: AeroElectric-List: Re: Z101 with Rotax 915iS From: "user9253" Here is the correct link to the 912iS heavy maintenance manual: https://www.cps-parts.com/cps/pdf/d05973.pdf It also has conflicting descriptions of the integrated alternator. Section 24-20-00 Page 5 says three phase. Section 71-00-00 Page 11 says single phase. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496834#496834 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.