Miniature Plug-in Relay, simple wiring diagram

Reply

  #1  
Old 07-24-09, 04:32 AM
Member
Thread Starter
Join Date: Jun 2009
Location: Rochester Hills. MI
Posts: 42
Received 0 Votes on 0 Posts
Miniature Plug-in Relay, simple wiring diagram

Type R – Miniature Plug-in Relay
and Wiring Diagram

please refer to page 6 of this link
http://stevenengineering.com/Tech_Su...Fs/45RGENR.pdf

first wiring diagram has
inputs 1 & 5
output 9
coil 13 , 14

When the coil is energized,
Is this diagram saying
In order to see voltage at the output

voltage must be applied to both inputs 1 & 5
or
voltage must be applied to one or the other of the inputs ?
thanks in advance
 
Sponsored Links
  #2  
Old 07-24-09, 04:39 AM
Member
Join Date: Oct 2008
Location: New England
Posts: 10,451
Received 29 Votes on 27 Posts
Hi Mark, What the diagram is telling you is which contact is the normally closed and which is the normally open. 9 is the common contact and with no energy applied to the coil 9 and 1 are connected. Apply energy to coil and 9 transfers to 5 and 9 to one opens. This allows you to turn something on or off when the coil is energized. Does this help?

Bud
 

Last edited by Bud9051; 07-24-09 at 04:41 AM. Reason: text
  #3  
Old 07-24-09, 08:38 AM
Member
Join Date: Jul 2008
Location: Kingston, PA
Posts: 137
Received 0 Votes on 0 Posts
Mark - as Bud mentioned, energizing the coil will change the internal connection of the relay from 9 & 1 to become 9 & 5.

The verbage "normally closed" and "normally open" refer to the state of the contacts with the relay in the "on-the-shelf" state. That means the relay coil is NOT energized, just as it would be sitting in it's box up on the shelf.

Terminal/contact 9 is called the COMMON terminal.

Terminal/contact 1 is called the "normally closed" contact, a.k.a. NC or N/C, because the path between 9 and 1 is closed, or connected, when the relay is in the normal on-the-shelf state (NOT energized).

Terminal/contact 5 is called the "normally open"contact, a.k.a. NO or N/O, because the path between 9 and 5 is open, or NOT connected, when the relay is in the normal on-the-shelf state (NOT energized).

Usually the switched power or signal wire is connected to the COMMON terminal (#9 in your case) and the wire(s) going to whatever you want to do by energizing or de-energizing the relay are connected to 1 and 5. You can use either NO or NC, or both depending on what you want to do.


In wiring schematics, if the schematic shows this:
--||--, this represents wires connected to NO contacts (in your case 9 & 5)

If it shows this:
--|/|--, this represents wires connected to NC contacts (in your case 9 & 1)
 

Last edited by williswires; 07-24-09 at 08:42 AM. Reason: edited text
  #4  
Old 07-24-09, 09:36 AM
Member
Thread Starter
Join Date: Jun 2009
Location: Rochester Hills. MI
Posts: 42
Received 0 Votes on 0 Posts
Thanks Willis & Bud
It's all clear now. I'm ordering the relay now
You fellows have been great
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: