Technical data

EDS - TECHNICAL INSTRUCTIONS
4
5.2 - Jumper Settings
JP1- to enter/exit the optical alignment procedure. To activate
the procedure of optical alignment JP1 must be in 2-3 (ON)
position. To deactivate the procedure of optical alignment JP1 must
be in 1-2 (OFF) position.
• JP1 position 2-3 (ON).......alignment procedure on
• JP1 posizione1-2 (OFF)... alignment procedure off
JP2 - JP3 - JP4 to set the output contacts respectively of Alarm
relay, Turbulence relay and Fault relay to normally closed NC or
normally open NO (cap. 5.1) The RK100/200B detector is
normally factory preset with normally closed NC contacts. For
the alarm relay the indication of JP2 is valid if JP7 is in OFF
position.
JP5 - activate the alarm memory function or to deactivate that
function (detector automatically resets alarm output)
• position 1-2 alarm memory off. When the detector gets out of
alarm condition it automatically resets alarm output
• position 2-3 alarm memory on. In case of alarm the detector’s
alarm output persists until power supply is switched off for at least
5 seconds
JP6 - microprocessor reset (SW reset)
JP7 - selection of alarm relay operational mode : normally
powered or not powered
• JP7 ON - relay of alarm normally powered (in case
of alarm the relay gets not powered). In this case the indication of
the JP2 is inverted:
• JP7 OFF - relay of alarm normally not powered (in case of alarm
the relay gets powered). In this case the indication of JP2 is
according to figures 12-13-14 (diagrams of the terminal block
and the classical scheme of connection to a control system to
terminated lines)
6 - OPERATION
6.1 - the RK100/200B detector is equipped with 2 circuits of
detection of the smoke produced by a fire:
• Obscuration - circuit sensitive to obscuration. This circuit bases
its operation on the attenuation of the infrared beam intensity, along
the optical path between the transmitter and the receiver, caused
by smoke presence.
• Turbulence - circuit sensitive to turbulence. During the beginning
phase of a fire, generally there are some clouds of smoke and warm
air that rise up to the ceiling. When these clouds and warm air
intercept the infrared beam produced by the detector, they cause a
perturbation of it, because they generate changes of optical and
physics characteristics in the transmission mean of the infrared
beam. This variations are obviously time related.
An suitable circuit has been designed to detect these variations
and, when these reach the programmed amplitude and the duration
in time, an alarm signals generated.
The sensitivity of this circuit is independently adjustable to fully
satisfy the specific application needs.
The advantage offered by this circuit is a great speed of fire
detection, because it is detected in dynamic way in its initial phase.
7 - OPTICAL ALIGNMENT
7.1 - proceed with the optical alignment of Transmitter TX and
Receiver RX. To facilitate the operation we suggest to do it in low
ambient light conditions and to proceed in the following way:
• place in front of the Receiver (fig.3) an optical alignment lamp
able to project a concentrated and sufficiently intense light beam.
(we recommend the EDS alignment lamp LAL02)
• direct the light beam of the lamp to the lenses of the Transmitter
• look at the screen that is behind the lens, inside the Transmitter.
On it you will see a bright point that represents the image of the
lamp
• move the optical block using her special screws V1-V2-V3 with
a key, so that the bright point falls in the center where a small hole
is present through which the photodiode is visible (fig.4). It’s
important that the bright point falls on the photoemitting zone of
the photodiode. This zone is represented by the small dark dot in
the center of the photodiode. In such way the TX will be alligned
with the RX.
After doing the optical alignment of the Transmitter it is necessary
to do the optical alignment of the Receiver.
To do that you have to repeat the operations previously described
in this paragraph.
8 - SETUP OF THE OBSCURATION CIRCUIT
Electric signal setup must be performed according to the following
sequence:
8.1 - do not power up the TX and the RX
8.2 - on the Transmitter (TX) rotate the selector SW3 in one of
the positions 1-2-3-4 (fig.10) according to the distance between
TX and RX with reference to fig.7
8.3 - power up the TX and don’t mount the cover. The red led of
the TX will pulse every 10 seconds
8.4 - on the Receiver (RX) move the alignment jumper JP1 (fig.9)
in the position ON (Alignment) to activate the initial setup
operation mode
8.5 - power up the Receiver
8.6 - the blue led and the red one will start working in the way
described ahead in chap. 8.13. Before going on to this chapter
read what’s following
8.7 - the P1 trimmer (regulation of the signal level) is factory
preset to the 50-60% and it corresponds to a signal of 5V at the
maximum distance
8.8 - to get the best results in the following operations, we
recommend the use a measuring instrument (Multimeter),
preferably an analog hand type, for better control of the variations
of the signal during the setup. Good results are also obtained using
analogical STS01 (optional), designed for this application, that must
be inserted on the special connector CN4, set on the printed circuit
of the detector (v. fig. 11). If you don’t have a Multimeter or the
STS01, you can perform the setup operations anyway evaluating
the signal level with the frontal Leds indications as described in
chap.8.13
8.9 - if available, connect a 5V fullscale multimeter between the