2N 9135110E, Installation Manual

Page: 28 / 77

Installation manual 2N® Analog Vario
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Typical Electric Lock Connection
2N
®
Analog Vario contains a solid-state switch equipped with V-MOS transistors, which is able to
switch both ac and dc regardless of polarity. Make sure that the current and voltage values do
not exceed limits (refer to the Technical Data) and that the technical parameters of the lock and
power supply are compatible.
If you do not have an electric lock and want to have one, you should select a 12 V lock, this being
the most common type. Connect the lock according to the figure, which shows the button
backlight supply too (see later).
Dc-supplied lock: Practically all locks can be dc and ac supplied. The ac supply is more
advantageous because the lock buzzes, which is the clearest signalling method however to use a
dc supply lock (from batteries, e.g.), you are recommended to
equip 2N
®
Analog Vario with
acoustic signalling (continuous tone during the whole switch activation time).
Typical Backlight Power Supply
2N
®
Analog Vario features a high-quality white-LED name plate backlight. This backlight shows
low power requirements, long life and even illumination of all name plates. If a standard 12 V
•
Warning
Never switch 230 or 120 V mains voltage directly!!!

•
Caution
If the lock power supply fails and the telephone system carries on working, the
keypad-equipped
2N
®
Analog Vario system is unaware of the failure the switch will
be password-activated and the activation is acoustically signalled, but the electric
lock will not work because of the lack of power.
