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09-13-2009, 01:32 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
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Plane Power - "Alt Out" light connections
I'm wiring my Plane Power alternator - pretty simple to do with the B&C regulator, but there's one line in the PP installation instructions that has me wondering.
"7. If aircraft is equipped with an "alternator out light" circuit, connect that wire to the AUX terminal..."
So my question is - Does the AUX terminal put out 13.8V when the alternator is out, or does it go to ground?
Either way is easy to complete - just need to know if the other end of the lamp gets a ground or 13.8V.
Thanks in advance
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Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009 )
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
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09-13-2009, 01:46 PM
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Join Date: Jun 2005
Posts: 371
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Alt out light
Go to PP web sight and look up Tech help. The wire goes from the alt thru a light and thru a breaker (1amp) the to the aircraft buss. This is where it gets 12 V.
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09-13-2009, 05:44 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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I had a non-operating warning light....
....and got this note from the Factory --
The warning light should have one side connected to a fused voltage source (the bus) and the other side connected to the LAMP lead of the R1224 regulator. If your installation does not have the AUX terminal of the regulator connected to an AUX terminal on the alternator, then put a jumper between the regulator's AUX and ENABLE terminals.
The jumper bit is not very clearly spelled out in the installation instructions.... 
It works like a charm, and I dumped the 30 year old mechanical regulator on my Tiger - getting OV protection and a warning light.
This is what is inside a mechanical regulator --
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Last edited by az_gila : 09-13-2009 at 06:52 PM.
Reason: speling
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09-13-2009, 05:56 PM
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Join Date: Jan 2005
Location: Marion IA
Posts: 1,095
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LED for Plane Power Alterntor Fail Indicator?
Has anyone used an LED light in this application? The factory support person told me that an LED might be on (dimly) all the time due to input leakgage current, even when the alternator was working fine. Just wondering if anyone has direct experience?
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Dave Gribble VAF #232
Building RV-9A N149DG (slider, IO-320, IFR)
Restored and Flying Beech Super III N3698Q
Marion IA
Struggling with fiberglass
There is no sport equal to that which aviators enjoy while being carried through the air on great white wings." Wilbur Wright, 1905
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09-13-2009, 05:59 PM
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Join Date: Jan 2005
Location: Atlanta, GA
Posts: 2,295
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Short answer: That line gets pulled to ground when a failure occurs.
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"What kind of man would live where there is no daring? I don't believe in taking foolish chances but nothing can be accomplished without taking any chance at all." - Charles A. Lindbergh
Jamie | RV-7A First Flight: 7/27/2007 (Sold)
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09-13-2009, 06:48 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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I installed a 12v...
Quote:
Originally Posted by IowaRV9Dreamer
Has anyone used an LED light in this application? The factory support person told me that an LED might be on (dimly) all the time due to input leakgage current, even when the alternator was working fine. Just wondering if anyone has direct experience?
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...LED indicator - works fine.
I presume it's just a standard LED with an integral series resistor - it is marked for direct 12 volt operation.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Last edited by az_gila : 09-14-2009 at 11:00 PM.
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09-13-2009, 07:40 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
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I like short answers...
OK, so the AUX terminal gets pulled to ground on an alternator off/failure.
Thanks for all the help.
__________________
_______________________________
Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009)
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
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09-14-2009, 08:07 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 885
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Yes, pulls low with fault
Per the PP diagram, the indicator goes low with fault. Rick 90432 wiring, wiring, wiring.
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09-14-2009, 11:00 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Short answer...
Quote:
Originally Posted by DakotaHawk
OK, so the AUX terminal gets pulled to ground on an alternator off/failure.
Thanks for all the help. |
...and don't forget the jumper wire...
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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