Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Crossover Light on

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List
View previous topic :: View next topic  
Author Message
nuckolls.bob(at)aeroelect
Guest





PostPosted: Sun May 10, 2020 5:39 pm    Post subject: Crossover Light on Reply with quote

Quote:

So..,, since then, I finished wiring in radios etc, and now the cross over light is on when I turn on only the Aux master (I have installed the Z-14 dual batt dual alternator). (It's in a Long Ez). Everything seems to work correctly, starter, crossover, etc. when I turn on the main master I don't get the light, when I turn on both masters, I don't get the light, it's just when I turn on only the Aux master.


Boy . . . that's a lot of harxware to be
carrying around in an Ez . . .

You have discovered a 'bug' in the architecture.
A 'sneak path' exists from the hot aux bus thru
the cross-over contactor coil then through
the CROSSOVER WARN light to the DEAD main bus
as a 'ground'.

See https://tinyurl.com/ydg99c5w

You can fix this by adding a diode (any handy
size will do) in series with the CROSSOVER WARN
light as shown in the sketch.

You can install it in the lead wire to the
annunciator fixture. See

https://tinyurl.com/kyc6tq6

for the technique.

Thanks for the heads-up! I'll update
Z14 to add this fix.



Bob . . .


- The Matronics AeroElectric-List Email Forum -
 

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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
skywagon185(at)gmail.com
Guest





PostPosted: Mon May 11, 2020 12:24 pm    Post subject: Crossover Light on Reply with quote

Good catch by both of you electro-types....
Nice easy solution too....

On Sun, May 10, 2020 at 6:45 PM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

Quote:
Quote:

So..,, since then, I finished wiring in radios etc, and now the cross over light is on when I turn on only the Aux master (I have installed the Z-14 dual batt dual alternator). (It's in a Long Ez). Everything seems to work correctly, starter, crossover, etc. when I turn on the main master I don't get the light, when I turn on both masters, I don't get the light, it's just when I turn on only the Aux master.

  
    Boy . . . that's a lot of harxware to be
    carrying around in an Ez . . .

   You have discovered a 'bug' in the architecture.
   A 'sneak path' exists from the hot aux bus thru
   the cross-over contactor coil then through
   the CROSSOVER WARN light to the DEAD main bus
   as a 'ground'.

   See  https://tinyurl.com/ydg99c5w

   You can fix this by adding a diode (any handy
   size will do) in series with the CROSSOVER WARN
   light as shown in the sketch.

   You can install it in the lead wire to the
   annunciator fixture. See

   https://tinyurl.com/kyc6tq6

   for the technique.

   Thanks for the heads-up! I'll update
   Z14 to add this fix.



  Bob . . .


- The Matronics AeroElectric-List Email Forum -
 

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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group