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Alternator connections

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jay(at)horriblehyde.com
Guest

Posted: Wed Sep 02, 2009 5:48 am Post subject: Alternator connections

Hi there,  

   

I am trying to connect a Nippon Denso alternator into a Z scheme and am confused as to the connections.  There are 4 small pins in a plastic housing and it is these whose function/ connection I cannot deduce.  To me there should be only 1 or 2 pins for positive and negative of the field, or just positive.  The photo (although blurred) shows the pin arrangement of two pairs of pins separated by a plastic shield.  Can anyone cast any light on how to connect these?  

   

Thanks  

   

Jay

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Sep 02, 2009 7:14 am Post subject: Alternator connections

At 08:30 AM 9/2/2009, you wrote:

  	  Quote: 	
		   Hi there,

  

 I am trying to connect a Nippon Denso alternator into a Z scheme and am confused as to the connections.  There are 4 small pins in a plastic housing and it is these whose function/ connection I cannot deduce.  To me there should be only 1 or 2 pins for positive and negative of the field, or just positive.  The photo (although blurred) shows the pin arrangement of two pairs of pins separated by a plastic shield.  Can anyone cast any light on how to connect these?

  

 Thanks

  

 Jay 	


  What's the part number or better yet, the Lester number

  of your particular alternator. You can get a pinout

  at:



  http://www.quality-built.com/catalog.htm



  Enter make, model of car that the alternator is used

  on or . . . 



  go to the "Cross Reference" tab of the above

  link and enter the OEM or Lester number.

  Step though the various photo views of the

  particular alternator and I think you'll find

  that one of the photos is a pinout diagram.



  Having said that, you probably wont find a

  connection to your alternator's field terminals.

  The vast majority of alternators in the automotive

  wild have built in regulators.



 

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------



     [quote][b]

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jay(at)horriblehyde.com
Guest

Posted: Thu Sep 03, 2009 2:56 am Post subject: Alternator connections

Thanks Bob,  

   

I tried that and it gave me a few clues but I am not sure what the lester number is.  I tried all of the numbers on the nameplate and came up with a few hits but none that worked.  Trouble with specifying the make model etc is that it is a motorbike engine and they don’t list those.  

   

So, back to basics, there are 4 terminals, and a small diagram that indicate that 2 of them are ‘IG’ and ‘L’.  >From looking at some of the alternator diagrams at the link you gave I found that there are the following possible connections, Ignition, Light and Sense.  This is where I get stuck, I am expecting Field and Earth/ Ground.  

   

What is Ignition and Sense for- or how should they be used?  And how is the Light circuit wired?  My idea of a light warning circuit is that one side of the light is connected (via a switch, etc) to the battery positive terminal and the other side to the 12-14V out from the alternator.  If either the battery voltage or the alternator voltage drops the light goes on?  

   

The Ignition cct is sort of the field winding in that it requires 12V in?  

Have no idea what the Sense cct might be; any ideas?  

   

Thanks  

Jay  

     

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  

        

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III

 Sent: 02 September 2009 05:12 PM

 To: aeroelectric-list(at)matronics.com

 Subject: Re: AeroElectric-List: Alternator connections  

  

   

At 08:30 AM 9/2/2009, you wrote:

 

   

Hi there,

  

 I am trying to connect a Nippon Denso alternator into a Z scheme and am confused as to the connections.  There are 4 small pins in a plastic housing and it is these whose function/ connection I cannot deduce.  To me there should be only 1 or 2 pins for positive and negative of the field, or just positive.  The photo (although blurred) shows the pin arrangement of two pairs of pins separated by a plastic shield.  Can anyone cast any light on how to connect these?

  

 Thanks

  

 Jay  



  What's the part number or better yet, the Lester number

  of your particular alternator. You can get a pinout

  at:

 

 http://www.quality-built.com/catalog.htm

 

  Enter make, model of car that the alternator is used

  on or . . . 

 

  go to the "Cross Reference" tab of the above

  link and enter the OEM or Lester number.

  Step though the various photo views of the

  particular alternator and I think you'll find

  that one of the photos is a pinout diagram.

 

  Having said that, you probably wont find a

  connection to your alternator's field terminals.

  The vast majority of alternators in the automotive

  wild have built in regulators.

 

 

     

       Bob . . .

 

         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------   	  Quote: 	
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       [quote][b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Sep 03, 2009 5:26 am Post subject: Alternator connections

At 05:54 AM 9/3/2009, you wrote:

  	  Quote: 	
		   Thanks Bob,

  



 So, back to basics, there are 4 terminals, and a small diagram that indicate that 2 of them are ‘IG’ and ‘L’.  >From looking at some of the alternator diagrams at the link you gave I found that there are the following possible connections, Ignition, Light and Sense.  This is where I get stuck, I am expecting Field and Earth/ Ground. 	


   Well, if they are marked, then you wouldn't get any

   different information from the catalogs that only

   go telling you what the labels are.



   IG is the alternator ON-OFF control lead and is the

   lead depicted on



  http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z24-Interim.pdf

 

   for controlling the alternator. I note that there

   is an error on that drawing that calls the input

   terminal "F" when indeed, it is "IGN".



   "L" is for a warning light that can be ignored.

   The best guess for "sense" is that it's a voltage

   control input lead for the regulator.



   

  	  Quote: 	
		    

 What is Ignition and Sense for- or how should they be used?  And how is the Light circuit wired?  My idea of a light warning circuit is that one side of the light is connected (via a switch, etc) to the battery positive terminal and the other side to the 12-14V out from the alternator.  If either the battery voltage or the alternator voltage drops the light goes on?

  

 The Ignition cct is sort of the field winding in that it requires 12V in?

 Have no idea what the Sense cct might be; any ideas? 	


    If it's off a motorcycle, get the wiring

    diagram for the motorcycle and duplicate that.

    Otherwise, consider disassembling the alternator

    to remove the built in regulator and bring the

    field leads out so you can use an external

    regulator.



 

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------



     [quote][b]

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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ianxbrown

Joined: 16 May 2009
Posts: 80

Posted: Thu Sep 03, 2009 5:52 am Post subject: Alternator connections

On my Nippon Denso internally regulated alternator, there are essentially four connectors, two of which are in a "T" arrangement.

 

 1.  The big battery terminal.

 2.  The IG terminal which is 12v from the battery through the alternator switch on the panel then to the IG terminal.

 3.  The L (lamp) switch which is grounded in the alternator when the alternator is not charging.  A lamp connected from 12V through the lamp to L would be off in a normally running engine, and on if the alternator was not charging.

 4.  The ground is through the body of the alternator, and depends on the grounding strap from the engine to the firewall.

 

 Ian Brown,

 Bromont

 Quebec

 C-GOHM RV-9A flying

 

 On Thu, 2009-09-03 at 12:54 +0200, Jay Hyde wrote:  	  Quote: 	
		       Thanks Bob,

     

      

     

     I tried that and it gave me a few clues but I am not sure what the lester number is.  I tried all of the numbers on the nameplate and came up with a few hits but none that worked.  Trouble with specifying the make model etc is that it is a motorbike engine and they don’t list those.

     

      

     

     So, back to basics, there are 4 terminals, and a small diagram that indicate that 2 of them are ‘IG’ and ‘L’.  >From looking at some of the alternator diagrams at the link you gave I found that there are the following possible connections, Ignition, Light and Sense.  This is where I get stuck, I am expecting Field and Earth/ Ground.

     

      

     

     What is Ignition and Sense for- or how should they be used?  And how is the Light circuit wired?  My idea of a light warning circuit is that one side of the light is connected (via a switch, etc) to the battery positive terminal and the other side to the 12-14V out from the alternator.  If either the battery voltage or the alternator voltage drops the light goes on?

     

      

     

     The Ignition cct is sort of the field winding in that it requires 12V in?

     

     Have no idea what the Sense cct might be; any ideas?

     

      

     

     Thanks

     

     Jay

     

      

     

      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

     

     

        

      From:owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III

     Sent: 02 September 2009 05:12 PM

     To: aeroelectric-list(at)matronics.com

     Subject: Re: Alternator connections

     

     

       

     

     At 08:30 AM 9/2/2009, you wrote:

     

     

     

     Hi there,

      

     I am trying to connect a Nippon Denso alternator into a Z scheme and am confused as to the connections.  There are 4 small pins in a plastic housing and it is these whose function/ connection I cannot deduce.  To me there should be only 1 or 2 pins for positive and negative of the field, or just positive.  The photo (although blurred) shows the pin arrangement of two pairs of pins separated by a plastic shield.  Can anyone cast any light on how to connect these?

      

     Thanks

      

     Jay

     

     

      What's the part number or better yet, the Lester number

      of your particular alternator. You can get a pinout

      at:

     

     http://www.quality-built.com/catalog.htm

     

      Enter make, model of car that the alternator is used

      on or . . . 

     

      go to the "Cross Reference" tab of the above

      link and enter the OEM or Lester number.

      Step though the various photo views of the

      particular alternator and I think you'll find

      that one of the photos is a pinout diagram.

     

      Having said that, you probably wont find a

      connection to your alternator's field terminals.

      The vast majority of alternators in the automotive

      wild have built in regulators.

     

     

     

     

            Bob . . .

     

             ---------------------------------------

            ( . . .  a long habit of not thinking   )

            ( a thing wrong, gives it a superficial )

            ( appearance of being right . . .       )

            (                                       )

            (                  -Thomas Paine 1776-  )

             ---------------------------------------

     

  	  Quote: 	
		  

 

 

http://www.matronics.com/Navigator?AeroElectric-List

http://forums.matronics.com

http://www.matronics.com/contribution

 

	
   	  Quote:

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