MK Retractive Switch

[self builder 123]

Hi

Looking for some help !

Just had a garage door installed which operates electrically via a remote control.

There is an option to fit a second hardwired switch inside the garage to control the door.

Could I use an MK Retractive Switch ( K4900 ) to do this ? It seems to be a rocker type of switch which I was hoping could be pressed UP to open the garage door and then DOWN to close the door.

 

[jj4091]

Yes you can do as you wish as long as it will handle the load, I presume you are switching elv to the controller.

 

[Spark123]

Also depends how many contacts the controller requires to do the job and how many are on the back of the retractive switch, and the ratings of the both.
Without knowing what your controller requires it is impossible to say.

 

[Lectrician]

The 4900 is a two way retractive isn't it, as in it can be pressed upwards and downwards?

This wont work with a garage door. Most garage doors either have a pair of terminals for open and a pair for close (if one side was commoned this switch would be ok, but depends in the door). Some doors just have a single pair of terminals which you short to open and then short to close. In this case you just want a one way retractive.

K4885 is the ONE way retractive (push switch).

K4900 is the TWO way retractive (push up and down).

 

[self builder 123]

Hi

Thanks for your replies.

I have attached a copy of the info which came with the door controller.

Untitled

• self builder 123
• 13 Jun 2009
• 1

Based on this would I be able to use the 2 Way Retractive Switch from MK ?

Cheers

 

[self builder 123]

Hi

Also forgot to say that the controller has been configured for the Deadman mode so as soon as you release the button the door stops, so no need for the Stop switch.

Plan to wire the switch in on the Key Switch terminals.

 

[self builder 123]

any more help would be much appreciated.

 

[ericmark]

The main thing is it requires a centre off position and the info is not very plain on this. I did find This PDF which does show grid switches which are centre off never heard of them before but does seem to fit the bill.

 

[ericmark]

Sorry just re-read MK sheet it says K4899 is two way and off so it would seem that is correct switch. I would assume the K4900 is a two way switch without centre off. I may be wrong?

 

[333rocky333]

The key switch you have, does it spring back to centre when you let go and once started the door carries on auto rather than holding the key in position.
if so you need a two way and off that springs back to centre off.

something like this may be better

http://cgi.ebay.co.uk/Roller-Shutte...er-Switch_W0QQitemZ180326223122QQcmdZViewItem

 

[self builder 123]

Cheers

I will double check the operation of the switches with MK.

 

[Steve]

fancy bugger with the lectric doors

some of us dont even have a garage!

 

[jj4091]

Those switchs do revert back to the centre position when they are released, that is why they are called retractive switches.