Man-1078_Sigma_CP_AUS_12
Page 12 of 29
+
IN
+
OUT
-
IN
-
OUT
DETECTOR
CALL POINT
6K8 END OF
LINE RESISTOR
+
IN
+
OUT
-
IN
-
OUT
DETECTOR
CALL POINT
6K8 END OF
LINE RESISTOR
POLARISED
SOUNDER
IN
OUT
+
IN
+
OUT
_
_
NOTE: SOUNDER WIRED IN
REVERSE POLARITY
USE ONLY SA-WIRE BASES
ON “T” SERIES PANELS
Figure 4. –
K Series detection zone wiring
Figure 5. - T series detection zone wiring
10
Detection zone wiring
The detection zones provide a nominal 24V DC to power compatible conventional detectors and call points.
The wiring is monitored for open and short circuit fault conditions. The 6K8 end of line monitoring resistors
that are factory fitted to the control panel’s terminals must be removed and placed across the last device
that is wired to the zone circuit.
Wiring can be conventional using standard detector bases (K series), or by the use of special detector bases
it is possible to wire the system such that detection devices and sounders are fitted to the same pair of
wires. (T series)
Detection zone circuits must be wired as a single, radial circuit with no spurs or T junctions to enable the
monitoring circuit to work correctly.
Polarised sounders may also be wired across the detection zone but in reverse polarity to that shown by the
zone terminals (see figure 5 below). Each zone can be configured individually as a 2-wire type zone or a
non 2-wire type zone using configuration options C1 to C8.
