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Date: Sun, 14 Jun 2009 20:39:55 -0600
From: Bob White <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] ECU manufacture and pin assignment
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Hi Chris,

The temp sensor is connected to pins 31 and 11 (Vcc) on the earlier
units and pins 31 and ground on the later units.  That doesn't change
when your unit is upgraded.  

Bob W.


On Sun, 14 Jun 2009 20:18:38 -0500
"Chris Barber" <cbarber@bellairepolice.com> wrote:

> Wow, I am just full of questions of late...AND, to make matters worse, I finally signed up from my work email, so now I should be able to actually respond and think of new things as opposed to just reading the archives until I get to my home 'puter.  OH, the horror......
>  
> Anyway, this may be more specifically for Tracy, however, as I mentioned I am checking all my wires.  It is a bit easier now that I have some experience and a bit of a clue of what I a doing....a bit anyway, or so I hope.
>  
> I was reviewing the latest EC2 manual that Tracy sent with my repaired and updated unit back in 2008. It is dated 1-28-2008.  He did NOT send an updated manual with his latest repair and update that I received about a month ago. 
>  
> I originally received my EC2 in about 2005, perhaps a little sooner, IIRC.  The newest manual I have shows TWO wire call out sheets.  One for 2005 and before and one for post 2006.  My question is, when Tracy updated my original unit did it also make it a POST 2006 box due to the update and thus I need to heed the wire call outs for the post 2006 units OR do I keep the original pin call outs for my initial box.   I do not know if the changes were hard wired only or software changes....or both.  Also, if the updates may have been hard wired stuff as well.  
>  
> It appears from a side by side comparison that the biggest change, as noted on the top of the call out sheet as well as a side by side comparison, is the change in the Temp Sensor wiring.  Now, of course, if I had never sent my unit in (no, I am not smart enough to not have fried a couple of units first), I would of course know it was the pre 2005 way.  However, since I have, I am curious about the extent of updates.
>  
> TIA and before I redo some wire runs <g>
>  
> All the best,
>  
> Chris
>  
> Cpl. Christopher Barber, JD
> Badge 330
> Bellaire Police Department
> 5110 Jessamine
> Bellaire, Texas 77401
>  
> 713-668-0487
> 713-662-8289 fax
>  
> CBarber@BellairePolice.com
> 
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