Cooper Security i-on 16 Guide de l'utilisateur télécharger pdf (Page 17)

i-on16 Installation

Page 13

Note: Do not site two or more keypads closer than one

metre together, otherwise their prox readers will

interfere and be unable to read tags.

Fitting

Use M5 25mm countersunk screws in at least three fixing

holes when mounting the back of the keypad on the wall.

Figure 8. Screw Keypad Back Box to Wall

Connect Keypad to End Station

Cable Type

In general, the control unit requires standard 7/0.2 un-

screened alarm cable for wiring to keypads.

Screened cable may prove necessary if the installation

site has equipment that produces high levels of R.F.

(Radio Frequencies), for example welding equipment. If

screened cable is required, you should keep to the

following guidelines:

1. Avoid earth loops by connecting the screen on the

cable to mains earth at the end station but not at the

keypad.

2. The continuity of the cable screen is most important

and screens MUST be continuous along the full length

of the cable.

3. If the cable enters any metal enclosure, ensure the

screen is isolated from the case.

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Cooper Security i-on 16 Guide de l'utilisateur Page 17