Common Instalation - 2N Helios User And Service Manual

Description of Terminals
This terminal protects Helios against static electricity damage.
GND
Switch 1 designed primarily for electric doorlock control.
SW1
These two terminals are connected to the 12V power supply with
LIGHT
arbitrary polarity. The power supply can feed the electric lock too.
These two terminals are connected to the analogue telephone line with
LINE
any polarity.
- Video signal output – used only if a camera unit is included. The
coaxial cable is connected with an internal conductor to
VIDEO
+
shielding to
Description of Jumpers
Connector (8)
• Here connect the current call indicator (LED).
• Write-protection (if the jumper is mounted).
• do not connect
• Microphone sensitivity reduction (mount the jumper for noisy
environments).
Camera setting – connector (18): refer to the instructions enclosed to the camera unit.
Parallel Connection
Parallel connection of multiple telephone sets was commonly used in the era in
which telephone lines were rare, It carries unnecessary risks to connect the unit in this
way. It is in no case recommended to connect Helios in parallel to another telephone or
another Helios door communicator. It is neither admissible to use equipment that
switches one line between two or more sets (intelligent double branch, etc.).

Common Instalation

7.1.
Typical Electric Lock Connection
Helios 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.
-.
23
+, with