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SYS5INST ISS.3 2000

7.0 External Wiring

7.1. Hardwired Sounder

The System 5000 Control Panel includes provision for two hardwired sounder

circuits. The circuitry monitors two pairs of conductors fitted with 4k7 End of Line

resistors. No connection to the control Panel should be made at this stage.

7.2. Hardwired Callpoint

The System 5000 Control Panel includes provision for a hardwired Callpoint

interface. The Control Panel monitors this input via a 4k7 End of Line resistor. No

connection to the Control Panel should be made at this stage.

Note. The external connections & wiring must be tested in the conventional

manner. Under no circumstances should the system circuitry be tested using a

meggar tester, once the connections to the control panel, or peripherals, has been

made.

7.3 Device Wiring

7.3.1. Using an Ohmmeter, check both sounder circuits to ensure that they have a 4.7k

ohm resistance across the connections and that the resistance between each connection

and the Control Panel earth point is greater than 20 M Ohm.

7.3.2. Check any Callpoint external wiring. The resistance across the Callpoint

connection should read 4.7k. Ensure that the resistance between each connection and

the Control Panel earth point is greater than 20 M Ohm.

7.3.3. Once external wiring circuits have been checked, make the connections to the

control panel. The Control Panel should be powered down prior to termination.

Connect all external wiring to the applicable Control Panel terminals (see drawing

p02910). Upon completion of this, repower the Control Panel.

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