Cooper Security 9853 Guía de instalación descargar pdf (Pagina 31)

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3. Installation

The terminals on the 9851 control unit main pcbs are described as Safety

Extra-Low Voltage circuits (SELV), according to the definitions in Safety

Standard EN60 950.

The terminals on the built in communicator are described as SELV or Tel-

ecommunications Network Voltage (TNV) according to the definitions in

Safety Standard EN60 950.

Note: The labels "SELV" and "TNV" which are shown in Figure 19 are for reference

only and do not appear on the 9851 main pcb.

It is important that the installer ensures that TNV terminals are connected

ONLY to the PSTN or other circuits designated as TNV circuits. SELV

terminals must be connected ONLY to other circuits designated as SELV

circuits. Strict adherence to the installation instructions will ensure that the

equipment continues to comply with safety regulations to which it was ap-

proved.

Connecting the Telephone Line

Direct connection, or interconnection via other apparatus, to the terminals on

the internal communicator can produce hazardous conditions on the tel-

ephone network. Always seek advice from a competent telephone engineer if

in any doubt regarding connection to these terminals.

The person responsible for connection of the internal communicator to a

PABX system must be as follows:

a) If the wiring is owned by British Telecom PLC, British Telecom must

connect the wiring to the communicator.

b) If the wiring is not owned by British Telecom, either:

(i) British Telecom

(ii) The authorised maintainer

(iii) A professional Installer after 14 days written notice to the author-

ised maintainer.

Connect the telephone line as follows:

If the telephone line is already terminated with a suitable lead and plug then

insert the plug into the RJ11 connector (see Figure 19).

Otherwise (see Figure 20):

1. Using a three core cable (type 1/05mm CW1308), strip back 5mm of

two cores and feed through one of the cable entries in the rear of the

9851 casing. Connect the two cores to the terminals, A and B on the

9851 PCB.

2. Connect the cable from the A and B terminals on the 9851 PCB to the

corresponding terminals on the BT master box.

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Cooper Security 9853 Guía de instalación Pagina 31