Number of C-Bus Ports

Hello

I was taking a look at the spec sheet for the Saturn Keypads on the SquareD website when I noticed under the C-Bus connections section it stated:

"One terminal block to accommodate 24-16
AWG (0.2?15 mm2), CAT 5 UTP cable required"

The same is found on the spec sheet for the 100 degree outdoor motion sensor. Does this mean that it only has 1 C-Bus port and if so, how would you wire a network that needed to use more than 2 of these devices?

J

 

The C-Bus system is topology-free, so you can just connect up the various cable runs in any configuration you like. You can daisy-chain them all together, you can wire them in a star configuration, you can do just about anything you like with the topology. The terminals are large enough that you can fit a couple of connections to the same terminal and the recommended practice is to use Bootlace crimps.

The only basic rules are that there's less than 1000m of cable on a network, that the total current consumption of 2A isn't exceeded and that the network impedance is in the 400 ohm to 1500 ohm range.

 

Yes it is one port, but as Newman said C-bus topoloy is free.

So for example you simply want to daisy chain your PIR's you have one cable from the rest of the network and one to the next PIR, it two cable ends. All you do is join the orange and blue wires together, twised or using a boot lace crimp, then join the white orange and white blue wires togther and put them into the appropriate ports on the device. The only limitation to the number of cables you can join on the one device is how many you can put in the terminal hole.

 

Thanks Ashley and Newman. That answered my question.