Contacts

[eco-tech]

I have a contactor and time clock for lighting and i need to switch this using a relay for 24v to a control panel.

As it stands i have a 4 core to the timeclock.

How do i wire a relay to the contactor so that i can switch the lighting on or off using this new control ?

 

[Notsosmart]

More info required I.e;

Make & model of timeclock, Rating of contactor & its Coil voltage, total load of fittings etc.

Presumably you want to control the lighting by either the contactor or the timeclock to switch in lights?
I also presume you have a permanent feed , and volt-free contacts on the timeclock.

You mention a 24V relay is this being controlled by the timeclock?

 

[bugsy]

Not sure why your using relay and contactor,
time clock would switch contactor coil and load wired through contactor contacts not sure where the relay comes in to this need a bit more info really unless your load is the relay which controls lighting through the panel

 

[eco-tech]

Yes its 230v
the time clock will be ripped out as the lighting will be controlled from a bms panel.

Contactor

It looks like feed in to a1 and N to a2 from time clock
Then a feed out to each light.
Terminals 1 and 2 are the light feed out but it also has 2 live feeds in terminals 3 and 4

What im wanting is to control this with low voltage switching.

 

[Notsosmart]

The contactor coil connections are A1 (Live) & A2 (Neutral) from what you are saying the contactor has to be controlled by switching 230vac. If you want to control the lights via low voltage switching you will have to also change the contactor (or at least its coil) for a suitably rated contactor with the correct coil voltage (i.e 24v either ac or dc). ~ The A2 connection being connected to permanent 0v

As also mentioned the contactor will have permanent feeds on one side of its contacts & switch feeds to the lights on the other.

 

[eco-tech]

Yes got ya but i need to keep the contactor in and switch it using a relay. So how do i wire the relay into the contactor ?

Lost me this one !!!!!!

 

[mnbs 4x4]

you say that the time clock will be removed and now controled via a lv relay, why do you need a relay to feed a contactor coil, as mentioned by notsosmart why don't you leave the contactor in place and replace the assumed 240v coil with a 24v coil or replace with a new 4pole 24v coil contactor rated to suit your existing circuits, is the low voltage control circuit now switched from a building services pc.
Hope this makes some sense to you

 

[m4tty]

Not another cannabis factory lol remote switching of hydroponics

 

[Notsosmart]

Not another cannabis factory lol remote switching of hydroponics

Now I'm intrigued

 

[eco-tech]

Yes its switched from a building services pc.

Dam Building doing my head in grrrrrrrrrrrrr

 

[m4tty]

take a cutting from a plant, get the skins out and relax lol

 

[Notsosmart]

Ok so the relay is switched via a pc ~ is that correct?

If so; all you have to do is switch the contactor coil through a contact on the relay, i.e the original timeclock feed to one side of the relay contact, connection to A1 of the contactor coil to the other side of the relay contact.

 

[eco-tech]

Thanks chaps i used a 24 volt coil.