roller shutter door key switch

[iceman]

hello there guys iv been tryin to wire a key switch to operate roller shutter doors, but it proovin hard work, the switch tht iv got is a telemecanique with 4 contacts indicating 3 and 4 on the green side 1 and 2 on the red side contact 1 say NC which indicates neutrel connection, and no 3 contact indicates NO thesupply coming in to the switch is three core cable yellow blue and red, any help on how to wire would be great thanks guys

 

[jmtisme]

NC doesnt mean Neutral it means Normaly closed No means normally open. Put a continuity tester through it you will see it makes or breaks the circuit.

Sorry but not sure what is required to operate your door but I do not think your switching will require a Neutral

 

[Jonesy83]

what kind of motor is it?

single phase tube op or a 3 phase off a starter?

is it just the 1 roller shutter door that your trying to operate off this switch

 

[iceman]

not sure wot motor it is i think its a single phase, jmtisme i was wondering if i but the neutrel wire in a block connector, and connect red wire in NO and yellow wire in NC what ya recken???

 

[Hawk81]

sounds strange to me. I would have thought the 3 core cable was 1 core live supply 2nd core switch live for up and 3rd core for switch down therefore your switch should have 2 sets of N/O terminals

 

[Jonesy83]

whats the switch going to? direct to the motor or to a control panel

or 3 phase motor starter

i do shutters doors day in day out

have you only got 3 wires going to the key switch

 

[iceman]

yes there are only three wires goin to the switch and the cpc of course, i expect the supply is going to the motor thn down to the switch, wots ya thoughts??

 

[jmtisme]

sounds strange to me. I would have thought the 3 core cable was 1 core live supply 2nd core switch live for up and 3rd core for switch down therefore your switch should have 2 sets of N/O terminals

yes I agree if the switch is momentary but if its latching I can see why it would have both NC and NO

 

[iceman]

when the key is turned to NO the doors will close thn once the key is turned to the NC the doors will open or visa versa

 

[Jonesy83]

sorry didnt reply last night had an early night


wrong switch basically unless you got the switch im thinking about


you say you got 4 terminals numbered 1 to 4

2 and 4 is linked

1 and 3 is your switching terminals so common into 2 and the direction wires into 1 and 3 just check with a continuity tester

if its not the switch im thinking of and you have got a nc then its not safe inside the motor theres limit switches if these fail the motor will carry on goin and can cuase a fair bit of damage to the shutter curtain or if anyones standing near it

3 years ago a bloke was killed by a normal domestic garage shutter door becuase it carried on going up and flipped out and smashed his skull open

 

[young tech]

i would like to know if its a 3 position switch just to see if it was a wrong switch they gave you

 

[iceman]

hi i went bk to the wholesaler today and he reckons tht i need three N O connectors as i used 1 NO and 1 NC with a gape in the middle of the switch plate so now iv tryed 3 N O connectors without any joy any more ideas would be great thanks

 

[Jonesy83]

what you should need is an two way switch both n/o you do not need a nc

wheres the job?

 

[bradford108]

It seems this key switch thing is giving you too much trouble already, ever considered just going straight to a professional?

 

[Knobhead]

For a roller door you need a 3-position spring return centre off switch with 2 NO blocks on the 2 outer positions of the actuator. One of your conductors will be permanently live, put this to 3 on one block and link to 3 on the other. The other two conductors go to 4, one to each block.