On the back of the call point there are 5 screw terminals connected to the internal PCB.
Depending on where the wires are connected, the call point provides a series resistor,
activates an internal LED or can simply provide a closing contact. If you choose to
connect the +IN cable to the terminal LED the call point, when operated, will
switch on the internal red LED. Alternatively if you connect to the NO terminal the LED
will not operate.
There are three different options for connecting the -OUT wire. Connecting to the C
terminal provides a clean contact without any series resistor(*). Choosing either the R1 or
R2 terminals incorporates a series resistance, where R1 is a 470 Ω (5% - 2 W) and R2 is a
680 Ω (5% - 2 W). The table below confirms the different connection options:
ZT-CP4/WP Conventional Weatherproof Manual Call Point
Important note: Please note that incorrectly connecting the power supply directly between
the “+LED” and “NO” terminals can damage internal components, as the power supply will
be directly applied to the LED. Carefully check your connections before applying power.
+LED
NO
C
R1
R2
470
680
(*) the current must be limited to 20 mA to avoid LED damages.
+LED
NO
C
R1
R2
SWITCH
LED+SWITCH (*)
LED+R1
R2
R1
LED+R2
+IN
-OUT
+IN
+IN
+IN
+IN
+IN
-OUT
-OUT
-OUT
-OUT
-OUT
1
Mount the back box to a suitably flat surface using the screws provided in the
installation pack. The cable entry holes should be in the vertical plane.
The back box can be mounted with either the single or the double entry holes at the top.
To maintain IP rating it is recommended that entry to the back box is done from below,
using the one or two 20mm conduit entry holes (knockouts) as required. Use IP rated
cable glands (not supplied).
2
When the wiring connections are complete, orient the terminal chassis onto the back
box ensuring that the two hinge tabs are at the top and firmly secure the terminal
chassis onto the back box using the 4 screws provided.
3
Carefully attach the front part to the top of the terminal chassis starting from the top
hinges.
Connection options
Mounting