Dec 3, 2003 13:32
20 yrs ago
English term

Contact closures toggle control functions

English Tech/Engineering
describing features of wall-mounted keypads for lighting control

- Recalls preset light levels for up to 15 scenes plus off and full on. Can also be configured for 14 scenes, off, and master raise/lower
- ***Contact closures toggle control functions***

I think it means that the keypad allows you to switch from contact closure (relay) outputs to other kind of outputs... so that it can control loads provided with contact-closure inputs and other types of loads...

am I out-of-track?

Responses

+8
1 hr
Selected

COMMENT

I think Gilbert may be dismissing their way of expressing this rather hastily!

I believe there is a very good reason why they have chosen to express it this way!

'Toggling' in technical terms means that a thing switches back and forth alternately; in other words, here they are talking about (for example) a button push [= contact closure] switching something on, and then the next time you push THE SAME BUTTON, it switches it back off again (unlike having 2 buttons, one for 'Off' and one for 'ON', or a button that is out for 'Off' and stays in for 'On'.

This is a very common technique in electornics and related fields, and basically makes it possible to use simpler, more reliable 'buttons' (of whatever type) which only have to make a momentary contact (like doorbell, for example!) in order to activate a certain function that by definition can only be in one or the other of 2 (or more) mutually-exclusive states.

For example, a light can ONLY be EITHER on OR off; or such a 'button' can be used to step through a series of mutually-exclusive possibilities, on a menu, for example.

E-mail me privately if you want further explanation...
Peer comment(s):

agree Raúl Waldman : Exact description! (I'm an electronic engineer).
36 mins
Thanks, Raul! (So am I...!)
agree Klaus Herrmann : It's contact closure week...
1 hr
Thanks, Klaus! Seems like it, doesn't it? :-)
agree Nado2002
5 hrs
Thanks, Nado!
agree Dorene Cornwell
8 hrs
Thanks, Dorene!
agree Rajan Chopra
15 hrs
Thanks, L/c!
agree Peter Linton (X)
20 hrs
Thanks, Lars!
agree Matthew Fagan
1 day 13 hrs
Thanks, Matthew!
agree Madeleine MacRae Klintebo
6 days
Thanks, Madeleine!
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "thanks a lot!!!"
-1
22 mins

button pushing..

No, sorry. I never saw such a fancy way to say that pushing the buttons make the thing work!
Contact closure simply means to turn a switch on, and toggle is pedantic for change.
This all just means that by pushing the button or buttons you can change the mode or control function. This is a great example of someone trying to hype a very common feature by shrouding it in technicalese.
Peer comment(s):

disagree Tony M : Please see my comment below...
53 mins
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