Installation manual
Installation 39
3-2-10
Installing nBy/X readers
The flush mount By/X reader (Registered patent) has been especially designed to integrate
with all brands of cover plates. Drill two holes [B] for the light guide [C].
Use the adhesive drill-pattern (see opposite) to mark the drilling locations accurately.
1. Ensure that the centre of the cover plate coincides with the crossing of the axes x and y
on the drill-pattern. In this way, the two drilling locations (1 x 7mm diameter and 1 x
8mm diameter) will be positioned precisely.
2. Using the screw [D], supplied with the reader, assemble and secure the reader compo-
nents.
3. Insert the cover plate (with the reader already assembled) into the light switch box.
DISLODGEMENT
TAMPER
The nBy/X reader is not equipped with built-in dislodgement-tamper protection. However, the
following section describes how you can protect nBy/X reader against this kind of tamper.
Please note that in order to comply with security standards, all the system peripherals must
be protected against tamper. Installation of a microswitch will allow the reader to signal
tamper events. To obtain this type of protection, work carefully through the following steps.
1. Use a microswitch with at least 2 normally-open contacts [A] (the one shown in the fig-
ure has 3 contacts: COM-NO-NC).
2. Take a terminal and program it as an input, 24H, whose description is “Tamper reader
x”, balanced with single resistance of 6K8ƻ [B], unlimited alarm cycles, belonging to a
partition that is visible on at least one keypad.
3. Using 2 wires, connect the microswitch to the 24H input terminal.
4. On the microswitch:
4.1. identify the common contact (COM) and connect it using one of the two wires, to
the GND terminal of the 24H terminal [C].
4.2. identify the normally open contact (N.O., which is the contact that generates a
short-circuit between the contact itself and the COM contact when the switch lever
is compressed) and connect one end of the 6k8ƻ resistor to it [D]. Connect the
other end of the resistance to the wire which is connected to the 24h input
terminal.
5. Install the microswitch as shown in the previous figure, so that the switch lever is com-
pressed. If an unauthorized attempt to dismantle the nBy/X reader occurs, the lever will
expand in order to open the contact which triggers instant alarms on the 24H terminal.
Note
This wiring method can be applied in most situations, however, it is only a point of reference. In order to
ensure proper protection, you must always take in to account the specific mechanical and electrical
conditions of the device you are working on.
ATTENTION!
In order to avoid malfunction, it is advisable not to install nBy/X readers onto metal plates.
3-3
Addressing the peripherals
In order to allow the control panel to identify the peripherals distinctly, you must assign a
different address to each device. However, you can assign the same address to two devices
which belong to different categories (e.g. a Flex5 expansion and a JOY keypad) as, in this
case, the control panels will see them as two distinct devices.
D
C
B
A
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