Hello

Hi all
i am verymuch new to C-Bus
i want to know whether i can
use conventional switches in an Electrical Circuit that is connected through CBus Relay. I am activating the Relay Channel through a Light Level Sensor.

 

Hi Rakesh

Perhaps if you explain a little more about what you are trying to achieve. We then may be able to offer better advice.

 

Help

Hai thank u for ur concern

One electrical ciruit that lights up the Lift Lobby,Store Room and Toilet.
There is one switch to control Store room and another for Toilet.
If i connect that Circuit to the output of the CBus Relay and activating that channel of the Relay by a Light Level Sensor (i am giving the Group Address of the Relay channel to the Sensor for lighting up the Area after Sunset) , can i use the same Conventional Switches to control the Store Room and Toilet lights?
Please give me a solution.

 

I wouldn't do it because it won't work the way people expect it to. I think it will confuse the people that use that area.

If you wire the switch and the relay in series then whenever either of them is off (the relay or the switch) then the light will be off. If someone comes in and turns on the switch they will expect the light to go on but it won't (because the relay may be off).

If you wire the switch and relay in parallel then if either of them is on then the light will be on. So, you can imagine, someone walks into this area and the switch is on, but when they leave they turn off the switch but the light may stay on (on because the relay may be on).

The best way is to put a C-Bus key input unit where your mechanical switches are now (re-wiring them to C-Bus, of course). The indicator on the key input unit will correctly follow the status of the light and there will be no confusion. If cost or wiring is an issue then you could use a C-Bus Bus Coupler connected to your mechanical switches but you will miss out on the indicator status feedback.

 

thanks a lot for your kind information

 

hello friend
i have still one doubt
How i use two CBus switches into one CBus Channel and controls different area?
how will i adress that switches?
if i am using a bus coupler is it required to connect that channel to CBus output units?

 

or have a look at the c-bus wireless products, they are made for replacing existing light switches and have their own output built in to the switch!

 

The mechanical switch would be connected to the inputs of the bus coupler (no voltage). The bus coupler would be connected to C-Bus. You would program the Bus Coupler with the address of the Relay channel. With C-Bus you can have many, many devices controlling a single relay or dimmer channel.