TRAC timers??

[Kev2632]

Hello i was wondering could explain to me what the information means on the number 2 output means?? and is number 2 and 1 the option of having two outputs on the timer?? thanks

 

[Stroppy]

1 and 2 are the actual switching contacts (which are brought together when the timer says), 3 and 4 are your permanent mains Live and Neutral to run the clock. Without the link you could, for example switch a 12 volt circuit connected to 1 and 2, this is known as "volt free switching". With the link in place it supplies 240v from the permanent live (3) to the switching contacts so you could switch a 240v load on without supplying a separate mains feed.

 

[MDJ]

It says on the back lol

 

[Clive P]

Hi,

Couldn't be any clearer than you said Stroppy.

Regards.

 

[Stroppy]

Thanks, I just interpreted what it said on the back, too. Having wired one of these myself I wish my colleague had looked at the back. Mine worked first time, and his blew up three timers as he randomly wired them as "I thought that's how they went."

 

[Kev2632]

So if the link isn't put in between the the two contacts, what does it mean by volt free contacts on these two contacts ? Is the voltage being put out by the timer 240volts on those 1 and 2 contacts ?

 

[Stroppy]

If the link isn't put between 2 and 3 the switching contacts 1 & 2 are electrically separate from the mains voltage running the clock (3 & 4). There will be no voltage supplied from the timer to either 1 or 2, which is why as I said you could switch a 12v supply connect to 1 & 2 without it getting blasted with 240v, as it would if the link was there.

 

[Kev2632]

So say i want to switch using the two outputs on the timer, i would need to put the link in between 2 and 3 for the the contacts 1 and 2 to switch yea??

 

[Kev2632]

If the link isn't put between 2 and 3 the switching contacts 1 & 2 are electrically separate from the mains voltage running the clock (3 & 4). There will be no voltage supplied from the timer to either 1 or 2, which is why as I said you could switch a 12v supply connect to 1 & 2 without it getting blasted with 240v, as it would if the link was there.

Is that right what im thinking, if the link is in between 2 and 3, that will allow me to switch 240volts on contact 1 yea?

 

[Kev2632]

Basically what I've got is this for the scenario, and it's a manual override switch and and photocell and the timer you see there, and basically we have a supply from the mcb to connection 3 and that other brown there goes to the over switch and and two browns leave the overide switch and come back to 1 and two there, the slightly darker brown is the return switch wire from the photocell and the black and grey cores go to two separate contactors, is this setup correct?