EDS - INFORMAZIONI TECNICHE
5
the Receiver is positioned perfectly in front of and perpendicular to the reflector (corner errors up to 5 ° in all
directions are allowed). For reasons of cable economy, we recommend installing the Receiver in the position
closest to the control panel.
6.5
- Introduce the cables inside using ATEX certified cable glands
7 - CONNECTION CABLES
7.1
- The reduced current of the device (20 mA with normally not attracted alarm relay and 30 mA with attracted
relay) allows the use of cables with small sections. We recommend, for distances up to 500m, a shielded cable
with 8 wires + screen [2x0.75 mmq (for power supply) + 6x0.22 mmq (for alarm relay contacts)].
In this way it is possible to carry away:
• the alarm signal (terminals C1-N1)
• the pre-alarm / fault signal (terminals C3-N3)
• the analogue signal (signal level) - (terminal 9 - SIGN)
The cable shield must be connected as shown in fig.8.
The box must be connected to the earth.
8 - ELECTRICAL CONNECTIONS
8.1
- To make the connection to the TX and RX terminal board, since the space inside the enclosure is very
small, it is necessary to remove the 4 fixing screws of the electronic board and position it adequately to
make the electrical connections on the terminal board. Then reinstall the card in its initial position.
Connect the appliance cables as shown in the diagrams in fig.6-7-8.
The symbols shown represent the following:
• (V+) (V-)
- power terminals 11 - 30 Vdc (TX and RX)
• C1-N1
- normally closed contact of the Alarm relay. The connection is valid when the detector is not in
alarm state and the jumper JP2 is in position 2- 3. If the jumper JP2 is positioned between 1-2 the contact
is normally open. Terminals C1-N1 are without voltage
• C3-N3
- normally closed contact of the Fault / Fault relay. The connection is valid when the detector is not
in a fault state and the jumper JP4 is in position 1- 2. If the jumper JP4 is positioned between 2-3, the
contact is normally open. Terminals C3-N3 are without voltage. The Fault relay is normally energized (for
intrinsic safety)
• SIG
- terminal with analogue output 0-5V of the detector. To be used only during calibration.
Figures 6-7-8 show the diagrams of the terminal board and the classical diagram for connection to a
control unit with terminated lines
9 - OPERATION
9.1
- The RK100BS-EX detector is equipped with a smoke detection circuit produced by a fire:
• DARKENING
- circuit sensitive to darkening.
This circuit bases its operation on the decrease in the intensity of the infrared beam, along the optical path
between the TX and RX, caused by the smoke
