CS875-575-375-275-175 Installers Manual with CS5500 keypad
A.4.1
Chapter 4: Installing a basic system
4.1 Wiring zones
4.1.1 General
The control unit inputs are set up as standard EOL (4K7) freely programmable zones. However, by programming
the zones as dual loop, all control unit zone inputs can be programmed to give alarm and tamper indication on the
same zone.
4.1.2 Dual wiring
One zone includes both alarm and tamper wiring.
The alarm devices are wired in series and a 4K7 resistor is fitted in parallel across the closed circuit contacts.
The tamper contacts are wired in series with a 4K7 EOL resistor.
•
All devices closed - loop resistance is 4K7.
•
Tamper device open - loop is an open or short circuit.
•
Alarm device open - loop resistance is 9K4 (i.e. EOL resistor PLUS parallel resistor).
4.1.3 Single wiring
Two zones are required, one zone for alarm and one zone for tamper. The tamper contacts are wired in series with
a 4K7 EOL resistor.
Information on programming the zones can be found in chapter B-2
Programming the control panel
.
4.2 Installing the control unit
The control panel is available in three separate housings. The method of installation and the positioning of
expander modules vary depending on the housing used.
1
Zone terminal
3
Alarm contact
2
Sensor
4
Tamper contact
1
Zone terminal
3
Alarm contact
2
Sensor
4
Tamper contact
4K7
4K7
E.O.L.
Z1
COM
Z2
1
2
2
2
3
4
4
4
3
3
Z1
COM
Z2
1
2
2
2
3
3
3
4
4
4
4K7
E.O.L.
4K7
E.O.L.