172 CHAPTER 19 CLICK 222
e steps below refer to how to install and wire a Click 222. If you are using a SmartSensor
Matrix preassembled cabinet, the device will already be installed and wired; all you will
have to do is wire the plug on the terminal block.
A single Click 222 can be connected to two sensors. If you have a four-sensor approach, you
will install a second Click 222 next to the rst by repeating the steps below.
1 Using a rocking motion, mount the Click 222 onto the DIN rail, making sure it’s on the
T-bus with the devices it’s supposed to protect.
Note
Depending on your installation, your Click 222 may be wired in dierent ways. If
you’re using terminal blocks on the lowest DIN rail, you will wire your sensor cable
into those, and then wire from the terminal blocks to the Click 222. If you are not us-
ing terminal blocks, you will wire your sensor cable directly into the Click 222.
2 Wire the cable from sensor 1 to the frontmost pluggable screw terminal block: connect
the orange and white–striped wire to the screw terminal marked +485A. Connect the
orange wire to the screw terminal marked -485A. (For ease, you can remove the termi-
nal block from the device, wire it, then reinsert it.)
3 Wire the cable from sensor 1 to the middle pluggable screw terminal block: connect the
blue and white–striped wire to the screw terminal marked +485C. Connect the blue
wire to the screw terminal marked -485C.
4 If you are using a second sensor, repeat steps 2 and 3 using that sensor’s cable. e
orange and orange-striped wires go into -485B and +485B; the blue and blue-striped
wires go into -485D and +485D.
5 Wire the backmost pluggable screw terminal block: connect the red wire into the screw
terminal marked +DC and the black wire into -DC. Wire the drain into either of the
terminals marked PE. If you are using two sensors, these three terminals will both have
two wires (one from each cable) terminated in them.
6 Connect a 14 AWG wire between the other terminals marked PE to a grounded lo-
cation, such as a grounding lug or an earth ground terminal block (if you are using
terminal blocks).
7 If you are using two Click 222 devices, you can either ground them seperately or ground
one of them and then connect the second one to it (by connecting a 14 AWG wire from
one of its PE terminals to the free PE terminal on the rst device).
e Click 222 is designed to be used with the Click 112/114 detector rack cards. To connect
to the cards:
1 Connect a patch cord from the Click 222 RS-485 A port to a bus 1 port on the appro-
priate rack card.
2 Connect a patch cord from the Click 222 RS-485 B port to a bus 1 port on another rack
card.
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