Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Contactor Questions

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

A Lumley

Joined: 12 May 2021
Posts: 10
Location: Ontario, Canada

Posted: Thu May 13, 2021 11:10 am Post subject: Contactor Questions

Good afternoon,



I'm working on a schematic for my RV-10 based on the Z-101 architecture and have come up with a couple questions about contactors...



First, about the starter contactor. The Z-101 shows a single conductor connecting the contactor to the starter with a jumper at the starter. I found another discussion from 2015 with an alternative arrangement (attached) for permanent magnet starters. I'm planning to use a B&C starter. Should I be using the extra wire & diode?



Second, I'm adding an external power outlet per Z-31A. I've made sense of most of this drawing but I'm unsure why there is no diode shown across the coil in the Z-31A diagram? The B&C continuous contactor includes an external diode already. Should it be removed?



Thanks for taking the time to read my perhaps basic questions!

- 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

facdd36_721.jpg

Description:

Filesize:

68.33 KB

Viewed:

2631 Time(s)

Z101.png

Description:

Filesize:

46.57 KB

Viewed:

2631 Time(s)

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Thu May 13, 2021 3:57 pm Post subject: Re: Contactor Questions

Z-31A does not require a diode because the over-voltage module provides arc suppression.

No, do not remove the B&C installed diode.  It does not hurt anything.

- 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

_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Thu May 13, 2021 7:31 pm Post subject: Contactor Questions

At 02:10 PM 5/13/2021, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "A Lumley" <andrew.lumley(at)sympatico.ca>



 Good afternoon,



 I'm working on a schematic for my RV-10 based on the Z-101 architecture and have come up with a couple questions about contactors...



 First, about the starter contactor. The Z-101 shows a single conductor connecting the contactor to the starter with a jumper at the starter. I found another discussion from 2015 with an alternative arrangement (attached) for permanent magnet starters. I'm planning to use a B&C starter. Should I be using the extra wire & diode? 	


   By 'extra wire' are you talking about the jumper from

   contactor "I" terminal to the starter's "S"

   terminal?  Yes, wire as shown and including

   the diode is a good thing.  The starter contactor

   from B*C will include a built in diode on its

   coil.



  	  Quote: 	
		  Second, I'm adding an external power outlet per Z-31A. I've made sense of most of this drawing but I'm unsure why there is no diode shown across the coil in the Z-31A diagram? The B&C continuous contactor includes an external diode already. Should it be removed? 	


   Wouldn't hurt but not necessary assuming you

   can get a B*C crowbar ov module. Are those

   available? I though those were out of production.  



 

  	  Quote: 	
		  Thanks for taking the time to read my perhaps basic questions! 	


   That's what this organization is here for

   my friend . . . folks that already know everything

   don't need us!



 

 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

- 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

A Lumley

Joined: 12 May 2021
Posts: 10
Location: Ontario, Canada

Posted: Thu May 13, 2021 7:42 pm Post subject: Re: Contactor Questions

Thanks to you both for the quick feedback. I'll include the jumper from the contactor "I" terminal to the starter with the extra diode.



You are correct that B&C no longer sells the crowbar module so I was going to build my own from your crowbar schematics.



Thanks again, I'm sure I'll have lots more questions...

- 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

Display posts from previous:

	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