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2N TELEKOMUNIKACE a.s., www.2n.cz
however to use a dc supply lock (from batteries, e.g.), you are recommended to equip
with acoustic signalling (continuous tone during the whole switch
2N Helios
®
activation time).
Typical Backlight Power Supply
2N Helios
®
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 electric lock (see above) is connected to
, the backlight can
2N Helios
®
be powered using the lock power supply. Connect the power supply as shown in the
figure. Just make sure that the power supply (adapter transformer) is able to supply
the required current
and that it is cooled properly (do not wrap it in any
constantly
thermally insulating material, or use ill-ventilating covers, etc.!). The required current
depends on the count of buttons and other elements in the set and can be determined
for 12 V according to the following formula:
Basic unit without keypad
: 80 mA
Basic unit with keypad
: 200 mA
1 one-side extender unit
: 80 mA
1 two-side extender unit
: 100 mA
Camera
: 130 mA
The above mentioned currents are maximum values at 12V.
Cable Arrangement inside the Cover
We recommend you to use a UTP cable (8-wire, approx. 5.5 mm output diameter) for
connection. Push the cable into the groove on the left side of the cover. If
2N Helios
®
you combine this cable with another one (e.g. the electric lock 2-wire cable), insert the
2-wire first and then the UTP cable to prevent the 2-wire cable from falling out. You
can also fit the cables with common clamp tape.
Caution
If the lock power supply fails and the telephone system carries on
working, the keypad-equipped
system is unaware of the
2N Helios
®
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.
Warning
An improper cable arrangement may cause a malfunction of the product.
Before closing the cover, check all wires and the cover for perfect closing.
Summary of Contents for Helios Vario
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