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kenryan
Joined: 20 Oct 2009
Posts: 429
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 Posted: Tue Dec 09, 2014 2:09 pm Post subject: regulator-rectifier questions |
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Rotax wiring diagram shows the regulator-rectifier for the integrated generator to have four terminals (in addition to the two that connect to the generator).
These terminals are marked R,B+,L and C. I am trying to figure out what they all do.
So far I think I have managed to figure out three of them:
C is the one that "turns on" the regulator/generator and it also supplies current to the warning light.
L is the ground path for the warning light.
B+ delivers the charging current to the battery/bus.
Question 1: Have I correctly identified the function of C,L and B+ ?
Question 2: What is the function of the R terminal?
I do know that the R terminal must connect to the positive battery terminal, but I would like to know its function.
Thanks in advance for your direct answers.
[quote][b]
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user9253
Joined: 28 Mar 2008
Posts: 1938
Location: Riley TWP Michigan
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| Posted: Wed Dec 10, 2014 7:03 am Post subject: Re: regulator-rectifier questions |
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Yes, you have correctly identified the function of C, L and B+
The R terminal is connected to the B+ terminal. Why, I do not know, either for increased ampacity or redundancy. According to a schematic of the regulator that I have seen, terminals R and B+ are also connected together inside of the regulator.
On page 18-3 of this document, http://www.vansaircraft.com/pdf/revisions/RV-12/User_Manuals/MM.pdf
is a wiring diagram of the regulator in Van's RV-12.
The warning light is not needed if an EFIS indicates a low voltage condition.
The regulator should be mounted in a cool location. It is notoriously prone to failure from overheating. Heat conductive grease should be applied to the mounting base.
Joe
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Joe Gores |
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kenryan
Joined: 20 Oct 2009
Posts: 429
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| Posted: Wed Dec 10, 2014 8:48 am Post subject: regulator-rectifier questions |
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Thanks Joe.
On Wed, Dec 10, 2014 at 6:03 AM, user9253 <fransew(at)gmail.com (fransew(at)gmail.com)> wrote:
[quote]--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com (fransew(at)gmail.com)>
Yes, you have correctly identified the function of C, L and B+
The R terminal is connected to the B+ terminal. Why, I do not know, either for increased ampacity or redundancy. According to a schematic of the regulator that I have seen, terminals R and B+ are also connected together inside of the regulator.
On page 18-3 of this document, http://www.vansaircraft.com/pdf/revisions/RV-12/User_Manuals/MM.pdf
is a wiring diagram of the regulator in Van's RV-12.
The warning light is not needed if an EFIS indicates a low voltage condition.
The regulator should be mounted in a cool location. It is notoriously prone to failure from overheating. Heat conductive grease should be applied to the mounting base.
Joe
--------
Joe Gores
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