Cooper Security 9751 Installationshandbuch PDF herunterladen (Seite 31)

3. Installation

496964 Page 23

When carrying out the cabling, there are two important points to remember:

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 four keypads and four expanders.

2. Check between 0V and 12V on the keypad bus at the point furthest from

the control unit: the voltage must be 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 its packaging.

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

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

hole for the keyway. Temporarily fix the case back to the wall. Mark the

position of two more fixing holes, remove the case back and drill the

holes.

4. Refit the case back to the wall using screws no less than 30mm x No 8,

with dome or pan heads.

Fitting the 9930 Keypad

The backplate of the 9930 keypad (see Figure 10) 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.

Cooper Security recommends that you mount the keypad using No 8 or 6

screws (M4/M3.5) as follows:

1. Select which cable entry you are going to use and break out the

appropriate plastic sections (item 2 on Figure 10).

2. Hold the backplate in place against the wall and mark the position of the

centre hole in the adjustable cam (item 3 in Figure 10).

3. Drill and plug the hole, and screw the backplate to the wall through the

adjustable cam. Do not tighten the screw completely home.

4. Make sure the backplate is level. Mark, drill and plug at least two more

fixing holes (item 1 in Figure 10). Screw the backplate to the wall through

the holes.

5. Cut the plastic webs connecting the cam to the backplate.

Note: If you do not cut the webs, the tamper switch will not operate in the

event of the complete keypad being forced off the wall.

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Cooper Security 9751 Installationshandbuch Seite 31