psm(at)att.net
Guest
|
 Posted: Sun Nov 16, 2008 2:02 pm Post subject: Heavy engine and Horiz. stab (Grant Corriveau) |
 |
|
Hi Bill,
The trick to understanding DPDT switches like the toggle switch used in the flaps is to know which circuits close when you move the handle. With this switch in the center position (where it rests with no user pushing) none of the circuits are closed. When you push the switch up the bottom output is connected to the center. When you push the switch down the top output pins are connected to the center pins.
The circuit operation depends on the use of the "NO" pins on the microswitches. These are "Normally Open". When the mechanical gizmo moves to operate the limit switch it changes the outputs so the "NO" pins become connected to the Common pin and the "NC" pin becomes disconnected from the Common. Opening the NC pin disconnects the power from the motor so the motion is "Limited".
You need to figure out which pins are normally closed, common, and normally open on the SPDT microswitches. Then you can wire up the whole thing and it actually works. You might be able to tell by seeing marks on the microswitches, and you can certainly tell with an ohm-meter.
I hope this helps. If you still don't get it please describe the problem you are having and I might be able to figure out what is wrong.
Good luck,
Paul
XL getting close
Retarded (oops, I mean retired) Electrical Engineer
At 12:35 PM 11/16/2008, you wrote:
[quote]OK, my stupid factor is in high gear today. I'm having difficulty with the flap switch wiring as shown on 6B-20. I've attached a copy. Somebody help me out, as I can't seem to get it right. I see that the black wire from the flap motor goes to the #1 lug. Red goes to number 3 lug. Ground goes to #2. Hot wire from the buss goes to 5 Beyond that I get confused. I've attached the diagram.
Thanks in advance.
Bill Pagan
[b]
| | - The Matronics Zenith-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?Zenith-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
