Cooper Security 9853 Guida di Installazione Scaricare il pdf (Pagina 19)

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3. Installation

1. Do not connect anything other than keypads and expanders to the keypad

bus. The keypad bus power supply is limited to a maximum of 400mA and

can supply no more than a maximum of four keypads and four expanders.

2. Make sure that the voltage between 0V and 12V of the keypad bus at the

furthest point from the control unit is at least 12.0VDC when all the keypad

backlights are on.

Note: The following instructions assume that you have already run all the necessary

cabling.

Fitting the System

Fitting the Control unit Case

1. Remove the control unit case from the packing.

2. Remove the front screws and slide off the case lid.

3. The upper part of the case back provides a central keyway. Mark and

drill a hole for the keyway. Temporarily fix the case back to the wall.

Now mark the position of two more fixing holes, remove the case back

and continue to drill the holes.

4. Refit the case back to the wall using not less than 30mm x No 8 Dome

or Pan-head screws.

Fitting a 9930 Keypad

The backplate of the 9930 keypad contains an adjustable cam that you can

use to make sure the tamper switch will operate correctly when the keypad is

mounted on an uneven surface. Figure 6 shows the backplate and the

position of mounting holes.

Figure 6. Backplate of the 9930 Keypad

Adjustable

Cam

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Cooper Security 9853 Guida di Installazione Pagina 19