 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
N38CW
Joined: 16 Apr 2008
Posts: 57
Location: Winston-Salem, NC
|
 Posted: Mon Feb 15, 2016 11:17 am Post subject: S702-1 Intermittent Duty Starter Contactor...pedigree unkn |
 |
|
Yes, I have seen the PDF. And yes, you would think you could ohm out the terminals. And yes again, I agree, it does not look like a very complicated device. However, there is no continuity between the "I" terminal and any other terminal. Hence my inquiry to them. I am still wiring so I have not energized the contactor and checked it in real world operation yet. My questioning to them was whether the "I" terminal is suppose to go positive (+12vdc) on contact closure and have continuity with the "M" terminal or, have continuity through the mounting base and thus go negative (-12vdc) on closure. It would make a difference on the annunciator wiring. My assumption tells me it would go positive but I didn't want to assume anything. I called and talked to both of them and neither could tell me how it worked nor could they provide a schematic.
From: Jan <jan(at)claver.demon.co.uk>
To: aeroelectric-list(at)matronics.com
Sent: Monday, February 15, 2016 10:42 AM
Subject: Re: AeroElectric-List: Re: S702-1 Intermittent Duty Starter Contactor...pedigree unknown
I assume you have seen the PDF that explain how to wire up the unit ? Link on the B&C web site ...
You should be able to ohm out the "I" terminal ...
Not a very complicated device ...
All the best
Jan
On Feb 15, 2016, at 14:38, Bill Settle <billsettle(at)bellsouth.net (billsettle(at)bellsouth.net)> wrote:
| Quote: | I have the same one. I called to get confirmation on the internal wiring of the "I" terminal that is to be used for an annunciator output because I wanted to know exactly how it worked. Talked to the top two guys there. Neither could tell me how it worked nor could they supply a schematic of the internals.
From: "Greenbacks, UnLtd." <N4ZQ(at)verizon.net (N4ZQ(at)verizon.net)>
To: Aeroelectric <aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)>
Sent: Monday, February 15, 2016 8:35 AM
Subject: AeroElectric-List: Re: S702-1 Intermittent Duty Starter Contactor...pedigree unknown
--> AeroElectric-List message posted by: "Greenbacks, UnLtd." <N4ZQ(at)verizon.net (N4ZQ(at)verizon.net)>
I purchased this starter contractor recently and I was surprised to
see that there was no identifiable manufacturer and country of origin markings on this part.
B&C declined (refused) to give me this information and suggested that if I were dissatisfied,
I should return the item..htnbsp; -Matt Dralle,tribution" target="_blank">
|
| | - 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 |
|
_________________
Bill Settle
RV-8 Fuselage |
|
| Back to top |
|
 |
JOHN TIPTON
Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England
|
| Posted: Mon Feb 15, 2016 11:41 am Post subject: S702-1 Intermittent Duty Starter Contactor...pedigree unkn |
|
|
I'm not sure what is being asked here (ie: subject line - 'pedigree unknown') but we are now talking about the "I" terminal, which is shown on any (eg: Z series or B&C) wiring diagram goes live (+v) when the contactor is closed, therefore can power a light which says 'starter engaged' !!!
Regards
John
Sent from my iPad
----x--O--x----
On 15 Feb 2016, at 07:16 pm, Bill Settle <billsettle(at)bellsouth.net (billsettle(at)bellsouth.net)> wrote:
| Quote: | Yes, I have seen the PDF. And yes, you would think you could ohm out the terminals. And yes again, I agree, it does not look like a very complicated device. However, there is no continuity between the "I" terminal and any other terminal. Hence my inquiry to them. I am still wiring so I have not energized the contactor and checked it in real world operation yet. My questioning to them was whether the "I" terminal is suppose to go positive (+12vdc) on contact closure and have continuity with the "M" terminal or, have continuity through the mounting base and thus go negative (-12vdc) on closure. It would make a difference on the annunciator wiring. My assumption tells me it would go positive but I didn't want to assume anything. I called and talked to both of them and neither could tell me how it worked nor could they provide a schematic.
From: Jan <jan(at)claver.demon.co.uk (jan(at)claver.demon.co.uk)>
To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)
Sent: Monday, February 15, 2016 10:42 AM
Subject: Re: Re: S702-1 Intermittent Duty Starter Contactor...pedigree unknown
I assume you have seen the PDF that explain how to wire up the unit ? Link on the B&C web site ...
You should be able to ohm out the "I" terminal ...
Not a very complicated device ...
All the best
Jan
On Feb 15, 2016, at 14:38, Bill Settle <billsettle(at)bellsouth.net (billsettle(at)bellsouth.net)> wrote:
| Quote: | I have the same one. I called to get confirmation on the internal wiring of the "I" terminal that is to be used for an annunciator output because I wanted to know exactly how it worked. Talked to the top two guys there. Neither could tell me how it worked nor could they supply a schematic of the internals.
From: "Greenbacks, UnLtd." <N4ZQ(at)verizon.net (N4ZQ(at)verizon.net)>
To: Aeroelectric <aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)>
Sent: Monday, February 15, 2016 8:35 AM
Subject: Re: S702-1 Intermittent Duty Starter Contactor...pedigree unknown
--> AeroElectric-List message posted by: "Greenbacks, UnLtd." <N4ZQ(at)verizon.net (N4ZQ(at)verizon.net)>
I purchased this starter contractor recently and I was surprised to
see that there was no identifiable manufacturer and country of origin markings on this part.
B&C declined (refused) to give me this information and suggested that if I were dissatisfied,
I should return the item..htnbsp; -Matt Dralle,tribution" target="_blank">
|
|
| | - 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 |
|
|
nuckolls.bob(at)aeroelect
Guest
|
| Posted: Tue Feb 16, 2016 6:53 am Post subject: S702-1 Intermittent Duty Starter Contactor...pedigree unkn |
|
|
| Quote: |
So back to my original post and a new question…. Lets take the case of a continuous duty contactor with no known pedigree, offered for sale from a supposedly reputable source. |
Do you have foundation for disputing
B&C's repuation?
| Quote: | | If it fails in flight, you’re screwed. |
Really? How so? How can that part fail?
How would you know that it failed? Is it
pre-flight detectable? How hard is it to
craft a plan-b that deals comfortable with
the failure of THAT contactor . . . or any
other component in your system?
| Quote: | | Who in their right mind would install this part. You ask your supplier for clarification as to brand and country of origin and you are met with a refusal to provide this information. |
If it's not marked on the part, the individual
being queried may not have that information
. . . and even if he/she did, how does
'country of origin' offer any assurances
of performance?
Is there some notion that parts from some
countries will last forever and while others
die in . . . X hours or less?
| Quote: | | If your supplier has any interest in maintaining high standards and a reputation for excellence, it would change its business practice. |
I have been an associate and observer of B&C's
business practices since it's inception. I was
involved with bringing B&C's first product (SD-
to market about 35 years ago. I can tell you that
thousands of customers have found B&C to be an
invaluable asset in the crafting of an efficient,
low-risk electrical system.
| Quote: | Please do not bother to respond unless you can offer a meaningful addition to this thread.
Angier Ames |
I humbly suggest that the thread is irrelevant . . .
If a system is designed for failure tolerance,
then whether a part has a SERVICE LIFE of 10 hours
or 10,000 hours is not a safety issue . . . it's
a cost-of-ownership issue. This an other concepts
in low-risk design are discussed in numberous articles
on the website and in the book . . . which you can
download for free if you so choose.
The major point here is that NO part lasts forever.
If ANY part is absolutely necessary for comfortable
termination of your flight, then you'd better have
a plan-b in place to deal with that failure.
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 |
|
|
|
|
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
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
