EDS RK 90 R User manual

EDS - TECHNICAL INSTRUCTIONS
1
REFLECTIVE TYPE OPTICAL
BEAM SMOKE DETECTOR
RK90 - R
RK90 - RS
with Laser Beam Pointer
BLP-90
TECHNICAL MANUAL
TECHNICAL INSTRUCTIONS FOR
INSTALLATION, SETUPAND
MAINTENANCE
EDS - V. Ca' Nova Zampieri 6 - 37057 S. G. Lupatoto (VERONA) - ITALY - tel: [phone] - fax: [phone] - Email: [e-mail] - Web:www.eds.eu

EDS - TECHNICAL INSTRUCTIONS
2
CHAPTER INDEX
1 - Qualified Personnel
2 - Relevant Standards
3 - Installation
4 - Cables Connections
5 - Electrical Connections and Initial Setup
6 - Operation
7 - Optical Allignment
8 - Setup of Obscuration Circuit
9 - Setup of Turbulence (Heat) Circuit (not for -S
version)
10 - Autocompensation
11 - Fault Output
12 - Alarm Memory
13 - Detector’s activation
14 - Operational Test
15 - Frontal Leds Operation
16 - Maintenance
17 - Sensitivity Selection
18 - Technical Data
STANDARD STARTING CONDITION
(Factory preset - Read ahead)
• SW1 - position 1 (minimum threshold level)
• SW2 - position 1 (minimum threshold level )
• JP1 - position 2-3 (optical allignment on)
• JP2-JP3- position 2-3 (alarm and turbulence relays
NC)
• JP4 - position 1-2 (fault relay NC)
• JP5 - position 1-2 (memory OFF)
• JP7 - not inserted (maximum transmitter power)
• JP8 - not inserted (alarm relay normally deactivated)
• P1 - adjustment trimmer at half scale
NOTE - the version RK90-RS is not equipped with the detection circuit of Turbulence. Therefore no items related to this function are
included. Keep in mind this indication while reading and using these instructions.

EDS - TECHNICAL INSTRUCTIONS
3
QUICK INSTALLATION
The procedure below is intended for trained personell with previous experience in installing EDS Beam Smoke
Detectors RK90-R(S). If you don’t have the needed experience please refer to the standard installation procedure of
this manual.On our site www.eds.eu is available a video with instructions for installing the RK90-R(S).
1 - Mount the RK90-R(S) detector
2 - Connect the cables
3 - Set the JP2-JP3-JP4-JP5-JP7 jumpers (see pag.10)
4 - Do the optical allignment with the Laser Beam Pointer BLP-90 with the procedure set out in cap.7
5 - Set the JP7 jumper according to the detector/reflector distance (tab.pag.9)
6 - Set JP1 in ON position (Allignment) (pag.12)
7 - Optimize the device signal using:
• the P1 trimmer
• the adjustment screws V1-V2-V3 on the optical block
• a multimeter (or the STS01 meter)
• Blue/Red Led signal level indication (see table on fig.8)
8 - Regulate the signal between 4,7V and 5V with the P1 trimmer .
9 - Verify the operation obscuring the reflector
10 - Select the desired sensitivity of the Obscuration circuit with the SW2 selector (40-50-60-70%)
11 - Select the desired sensitivity of the Turbulence (Heat) circuit with the SW1 selector (if used - not
present in -S version)
12 - Set JP1 in the OFF position to activate the device
11 - Close the cover within 5 minutes
12 - Wait at least 5 minutes for the device to become operational
13 - Perform operational tests

EDS - TECHNICAL INSTRUCTIONS
4
REFLECTIVE TYPE
OPTICAL BEAM
SMOKE DETECTOR
RK90-R
The RK90-R(S) detector is a new design microprocessor linear smoke detector, that bases its working concept on the
interaction between the smoke present in a in a room and an infrared beam emitted by a transmitter and reflected by an
optical reflector (fig.1).
The normal installation consists in mounting the detector on a wall of the room to be protected and in fixing the FX
reflector (FX01, FX02, FX03 etc. depending on the distance) on the opposite wall.
For a correct installation, we recommend to read and follow our instructions carefully.
The excellent working results of the device will widely compensate the time spent reading these instructions.
1 - QUALIFIED PERSONNEL
All the operations of installation, setup, startup, maintenance and verifications of operation of the RK90-R(S) detector
must only be performed by qualified personnel. These people are qualified for their experience, specialization courses and
knowledge of the current standards and of the technical specifications, features and usage method of the product.
These people therefore are able to avoid errors or damages and assure an optimal functioning of the product.
2 - RELEVANT STANDARDS
2.1 - For the installation in European Community countries you must follow the EC standard EN54-14 (Fire detection
and fire alarm systems).
In extraeuropean countries you should follow the relevant international and national standards.
3 - INSTALLATION
3.1 - For the installation of the RK90R(S) detector, we suggest to use, in addition to the normal tools (drill, expansion
plugs , etc) also the following tools:
• 1 - 7mm “C” key
• 1 - Multimeter (we recommend an analog hand Multimeter or our analog STS01 meter (optional) to be plugged on
the special connector positioned on detector’s circuit).
3.2 - Unscrew the two fixing screws (fig. 2) and remove the cover
3.3 - Install the device at a distance from the ceiling within the 10% of the height of the room to be protected.
This distance can be varied by the system designer if particular environmental conditions exist. Wall fixing must be done
with care using the holes provided inside the enclosure. If the wall is a solid masonry one, expansion plugs are enough for
fixing.
It’s extremely important that the fixing wall or surface is rigid and not subject to deformations.

EDS - TECHNICAL INSTRUCTIONS
5
3.4 - Get the cables inside through the holes obtained breaking the suitable zones marked on the sides of the detector’s
base. It is important to use a suitable chock with a connecting pipe to avoid that the dust penetrates inside the device,
possibly causing failure to its correct functioning.
3.5 - Install the reflector FX on the opposite wall and at the same height of the detector. It is not necessary that the FX is
exactly in front of and perpendicular to the detector (a small angular shift is possible in all directions).
We recommend, for cables economy, to install the detector as near as possible to the alarm control unit.
4 - CABLE CONNECTIONS
4.1 - The low detector’s power consumption (14 mA with normally open alarm relay contact (NO) and 28 mA with
normally closed alarm relay contact (NC)), allows to use small size sections cables We suggest to use a shielded cable with
10 conductors + shield ( 2x0,75 mmq for power conductors + 8x0,22 mmq for the signal conductors) for a distance up to
1 Km. In such way it is possible to get a remote connection of the following signals:
• smoke alarm relay contact (terminals C1-N1 )
• turbulence (heat) alarm relay contact (terminals C2-N2 )
• fault relay contact (terminals C3-N3)
• analog 0-5V output (for remote signal level measurement)
The shield of the cable must be connected as in fig.11.
5 - ELECTRICAL CONNECTIONS AND INITIAL SETUP
5.1 - Connect the device cables as shows on the labels facing the terminal board. The given symbols indicate what follows:
• (V+) - (V -) - Power supply terminals 11 - 30 Vdc.
• (C1) - (N1) - Normally closed smoke alarm relay contact. The connection is valid when the detector is not in an alarm
state and the JP2 is in 2-3 position. If JP2 is positioned on 1-2 the contact results normally open. C1-N1 terminals are
voltage free.
• (C2) - (N2) (not present in -S version) - Normally closed turbulence alarm relay contact. The connection is valid when
the detector is not in an alarm state and the JP3 is in 2-3 position. If JP3 is positioned on 1-2 the contact it results
normally open. C2-N2 terminals are voltage free.
• (C3) - (N3) - Normally closed fault relay contact. Fault relay is normally activated (intrinsic safety). Connection is valid
when the detector is not in fault state and JP4 jumper is in 1 - 2 position. If JP4 is in 2-3 position the contact is normally
open. C3-N3 terminals are voltage free.
• (SIG) - 0-5V analog output terminal.To use only during allignment.
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 (if present) and Fault relay to
normally closed NC or normally open NO (chap. 5.1). The RK90R(S) detector is normally factory preset with normally
closed NC contacts. For the alarm relay the indication of JP2 is valid if JP8 is in OFF position.

EDS - TECHNICAL INSTRUCTIONS
6
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 - Jumper to set the power level of the detector according to its distance from the reflector.
The maximum distance path between detector and reflector permitted for RK90R depends on the chosen reflector type :
25m with FX01 - 40m with FX02 - 50m with FX03
• JP7 OFF.....high power, from half maximum to maximum distance
• JP7 ON..........low power, for distances shorter than half maximum
JP8 - Selection of alarm relay operational mode: normally activated or deactivated
• JP8 OFF - Alarm relay normally deactivated (in case of alarm the relay gets activated). In this case the indication is
according to figure 10 (diagrams of the terminal block and the typical scheme of connection to a control system to
terminated lines)
• JP8 ON - Alarm relay normally activated (in case of alarm the relay gets deactivated). In this case the indication of 10
figure is inverted
6 - OPERATION
6.1 - The RK90-R(S) detector is equipped with 2 detection circuits of the smoke produced by a fire Obscuration and
Turbulence. The _S versions only have the Obscuration circuit.
• 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 (not present in -S version) - 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.Asuitable
circuit has been designed to detect these variations and, when these reach the programmed amplitude and duration in time,
an alarm signals is generated.
The signal amplitude and the response delay of this circuit are selectable in 4 steps that define 4 sensitivity levels. The
advantage offered by this circuit is a great speed of fire detection, because it is detected in a dynamic way in its initial phase.
7 - OPTICAL ALIGNMENT WITH LASER POINTER BLP-90
7.1- Warnings and safety instructions
7.1.1 - The Laser pointer BLP-90 is installed on board of the RK detector in order to speed the optical alignment
operation between the detector and the reflector
7.1.2 - The BLP-90 Laser pointer is an accessory that makes the installation faster EDS detectors. It allows a fast primary
alignment. But it is always useful to make the electrical alignment (fine adjustment).

EDS - TECHNICAL INSTRUCTIONS
7
7.1.3 - Be careful when performing the operations below, avoiding to damage the Laser pcb pressing or shocking it, so
that it remains alligned with the optics.The pointer is factory aligned with the optics on the factory testing optical bench.
7.1.4 - Attention ! - When the Laser it’s switched ON, it must not be pointed directly to human eyes and nobody should
watch the optics along the optical axis of the beam.
7.1.5 - In case of long path distance between the detector and relector, it’s suggested to perform alignment operations in
a reduced light condition environment
7.2 - Fix the detector firmly on the wall and the optical reflector on the opposite wall
7.3 - Apply power to the detector and turn ON the BLP-90 Laser alignment tool using the switch (look at the photo)
7.4 - Adjust optical orientation of the detector acting on the bolts V1-V2-V3 (fig.9), so that the Laser beam is directed on
the center of the reflector on the opposite wall. When this happens, the reflector reflects a bright red light dot.
7.5 - Turn OFF the Laser alignment tool.
7.6 - In this way, the optics of the detector are aligned with their reflector.
7.7 - Proceed with the adjustment of the maximum detector’s signal level as outlined in the following chapter 8.
8 - SETUP OF OBSCURATION CIRCUIT
Settup operations of the electric signal must be performed according to the following sequence:
8.1 - Do not power up the detector.
8.2 - Set up JP7 according to the distance between detector and FX with reference to the table fig.7 (FX01-FX02-FX03
ecc.).

EDS - TECHNICAL INSTRUCTIONS
8
8.3 - Set the jumper of Initial OpticalAllignment JP1 (fig.9) to ON position ( 2- 3,Alignment) to activate the initial setup
mode.
8.4 - Power UP the detector.
8.5 - The blue led and the red one will start to work in the way described ahead in the chap. 8.12. Before reading that
chapte
read the following.
8.6 - The P1 trimmer (regulation of the signal level) is factory preset to the 50-60% and it corresponds to a signal of
around 5V at the maximum distance.
8.7 - To get the best results in the following operations, we recommend to use a measuring instrument (Multimeter),
preferably an analog needle type, for better control of the variations of the signal during the setup. If you don’t have a
Multimeter, you can perform the setup operations anyway, evaluating the signal level with the frontal Leds indications as
described in chap.8.12.
8.8 - if available, connect a 5V fullscale Multimeter between the SIG terminal and the negative power supply one and read
the analog output signal. If the output signal is very low, it means that the operations of optical alignment, described in
chapter 5, have not been performed in the right way and therefore must be repeated.
8.9 - The transmitter of the detector emits a conic beam which shape and dimension, in relation with the distance between
detector and FX, are explained in figures 5-6. It’s important that the FX is in the center of the detector’s conic beam
because, under these conditions, even if some small movements of the wall, on which the transmitter is mounted on,
(caused by deformations), the reflector remains always within the beam and therefore active.
To obtain this, the operations of fine centering with output signal measuring, explained below, must be performed
with care.
8.10 - Adjust the signal around 3V acting on the trimmer P1 (fig.9).
Attention! - Whether to get the 3V is necessary to adjust the trimmer counterclockwise to almost zero or, if
turning the trimmer with small movements, you notice big changes on the signal level, this means that the
signal sent by the transmitter and returned from the reflector is too powerful. In this case it is necessary to
decrease the power of the TX inserting jumper JP7 ON which reduces the power to about half. If this action is
not enough, you need to use a smaller reflector or obscure a portion of the reflector surface in order to reduce
the reflective surface.
After performing these steps, the potentiometer P1 to get the 3V becomes simple and non-critical.
8.11 - If the alignment with the laser pointer was well executed,
normally the operation listed below is unnecessary and you can go directly to step 8.13.
Search for the maximum output signal optimizing the optical alignment of the detector acting slowly and in sequence on the
3 screws of regulation V1-V2-V3 present on the optical block. This procedure takes some time but, if performed well, it
assures a perfect operation of the detector for many years. We suggest to use the following procedure:
• On the detector slowly turn the screw V1 clockwise and then look at the value of the signal visualized on a Multimeter.
If the signal increased (for example from 3V it rised to 3,5V), then again turn the screw V1 of the detector clockwise and
then look at the value of the signal
• Continue with this procedure as long as the signal increases. When it has the tendency to decrease instead, stop the
operation on the screws V1 of the detector returning to the previous position.

EDS - TECHNICAL INSTRUCTIONS
9
• If during the operation the signal overcomes 4,5V, to avoid the saturation, act on the trimmer P1 to bring the signal
back to 3 V, allowing the best evaluation of the variations of the signal
• After finding out the maximum level signal acting on the screw V1, perform the same operations on the screws V2 and
V3.
In such way the best possible position of optical allignment is reached. This procedure is important because it will assure a
perfect operation of the detector for long time
8.12 - If you don't have a Multimeter, it is still possible to get good results in the optical alignment of the detector, looking
at the detector’s blue and red leds indications. Operation is the following:
• 1 flash of the blue Led: 1 Volt
• 1 flash of the red Led: 0.5 Volts
• if the signal is smaller of 0.5V the blue led and red one are off
• if the signal in the range 0.5-1 V the red led flashes once, remains off for 2 seconds and then it repeats the sequence
• if signal is among 1-1.5 V the blue led flashes once, remains off for 2 seconds and then it repeats the sequence
• if signal is among 1.5-2V the blue led flashes once and the red led flashes once. They remain off for 2 seconds and then
the sequence is repeated
• if signal is among 2-2.5 V the blue led flashes 2 times, remains off for 2 seconds and then it repeats the sequence
• if signal is among 2.5-3V the blue led flashes 2 times and the red led flashes once. They remain off for 2 seconds and
then the sequence is repeated
• same type of indication up to 4 V
• if the signal overcomes 4 V, the blue led flashes faster and faster as the frequency signal increases up to 4.7V
• when the signal overcomes the 4.7V and in the range 4.7V - 4.9V, the blue led is continously ON. This is the position
of optimal setup
• if the signal gets over 4.9V the two blue and red leds are permanently ON
This is the saturation indication.
The table of fig.8 recaps the leds operation.
8.13 - After doing the operations of fine optical alignment using the Multimeter or the indications of the leds, you must
regulate the signal slowly acting on the trimmer P1, between 4.7V and 4.9V.
When the signal it is included within this range, the blue led is costantly ON.
This it is the position of optimal setup. If the signal overcomes the 4.9V, the detector goes in saturation and the blue and red
leds are both ON.
Therefore acting on P1, it is necessary to set the signal between 4.7-4.9V so that the red led switches OFF and is only the
blue Led remains ON (to avoid saturation).
Attention! - This adjustment is not critical. The above procedure is optimal, however, it is sufficient that the
signal is just above the 4V and the blue LED is blinking or lit, to have a good calibration. Avoid, however, the
saturation (red LED lit). The microprocessor automatically compensates for inaccuracies in the calibration.
If this signal adjustment is critical, or, if turning the trimmer with small movements, you notice big changes on
the signal level, review as described in cap. 8.10.
8.14 - It must be checked out that, since the detector bases its operation on the reflection of the projected beam, this
reflection is effected by its FX reflector and not by other elements.
To be certain that the signal is produced by the reflection of its FX reflector only and not by other elements, it is useful to
do a simple verification. It is necessary to obscure the reflector with a non reflecting screen (opaque).
In that case the signal on SIG terminal must decrease under 0,5V (check indications in the following pages).

EDS - TECHNICAL INSTRUCTIONS
10
8.15 - Select the alarm threshold level of the circuit sensible to Obscuration acting on the selector SW2 keeping in mind the
following :
• position 1 - low sensitivity - obscuration alarm threshold set to 70% .................................................signal level 1.5V
• position 2 - low to medium sensitivity - obscuration alarm threshold set to 60% ........................... .signal level 2.0V
• position 3 - medium to high sensitivity - obscuration alarm threshold set to 50% -............................signal level 2.5V
• position 4 - high sensitivity - obscuration alarm threshold set to 40% -.............................................. signal level 3.0V
8.16 - Sensitivity must be regulated according to the environmental situation. The setting must normally be a medium
sensitivity level, but in case of dusty and perturbed environments, it will be useful to set a lower sensitivity level.
9 - SETUP OF TURBULENCE CIRCUIT
(not relevant for - S version)
9.1 - The RK90-R detector is equipped with a special additional circuit for the detection of air Turbulence (heat). This
circuit is independent from the classic obscuration one and in particular situations it can be used to increase the performan-
ce of the detector. If these particular conditios are not present the Turbulence circuit can be left unused.
9.2 - This circuit is particularly useful when, for environmental reasons, the optical beam smoke detector must be installed
at distances from the ceiling higher than the nominal. When the fire begins, it produces smoke clouds and hot air bubbles
that go up. When these bubbles intercept the infrared beam, they perturbate it because they produce a change of the
optical-physical characteristics of infrared beam. These changes are obviusly correlated in time. This circuit has been
designed to detect these changes and, when these changes reach the programmed amplitude and time lenght, an alarm
signal is generated. The advantage of this circuit is the quicker fire detection, because the fire is detected in its beginning
phase. A typical example is the complete protection of the dome of a church with important pictures on its surface. The
linear optical beam smoke detectors must be installed at the baseline of the dome and therefore much lower than the
ceiling. In this case using the turbulence (heat) detection circuit is very useful to improve the detection.
9.3 - Selection of the sensitivity level of the circuit sensitive to Turbulence(heat).
The operation is performed acting on selector SW1 of the detector that has 4 positions (fig.9).
• sensitivity increases from 1 to 4
• position 1 : minimum sensitivity
• position 4 : maximum sensitivity
The regulation must be done with caution, because with an higher sensitivity a quicker response time is obtained, but also
the probability of false alarm is increased. So the sensitivity selection must be done according to the environmental
conditions. If these conditions are good, an high sensitivity regulation is possible. If in the environment, because of the
normal working conditions, dust's clouds, vapor or smoke are systematically produced, it will be necessary to adjust the
sensitivity to a lower level, so that these factors do not generate false alarms.
10 - SIGNAL AUTO COMPENSATION
10.1 - The inside electronics of the detector is equipped with a special SW function of autocompensation of the signal. If
the detector is installed inside a particularly dusty place, the dust deposited on the front cover causes a drop of the signal.
This problem is automatically eliminated by the circuit of autocompensation.
11 - FAULT OUTPUT
11.1 - The contact of fault/malfunction relay is available on the terminal block of the detector . This relay is normally
activated and will become deactivated if the following conditions are verified:

EDS - TECHNICAL INSTRUCTIONS
11
• the signal drops below the 90% setup value (optical beam completely interrupted by an obstacle)
• the circuit of autocompensation has reached the limit (when this happens to proceed, it is necessary to do the maintenance
of the detector)
• malfunction (it means breakdown of some component)
Attention: As stated by the relevant standards, the fault output can be used for remote signaling, but must not be used for
inhibiting the alarm signal.
11.2 - Total Obscuration Option
It is possible to activate a function for rapid total obscuration (<1 sec, 90%) that activates only the Fault output (30 second
delay) and not the Alarm.
This could be useful to indicate that an obstacle was accidentally introduced through the path of the optical beam.
This operational mode is only working when total obscuration is rapid (<1 sec).
To activate this function operator must insert the JP9 jumper (fig. 9).
Test of this function can be done with a piece of non reflecting material quickly covering the reflector.After around 30
seconds of reflector covering, the fault output should be activated.
12 - ALARM MEMORY
12.1 - The RK90R(S) is equipped with an alarm memory function that can be switched ON/OFF with the JP5 jumper
(fig.9):
• jumper JP5 in position 1-2 - memory not activated (OFF)
• jumper JP5 in position 2-3 - memory activated (ON)
When the memory is activated, if the detector goes in alarm, the Alarm relay and the frontal red led remain activated until
the alarm condition disappears and the power supply is not switched off for more than 5 seconds. When the memory is not
activated, if the detector goes to alarm, the alarm relay and the frontal led are deactivated as soon as the alarm stops.
12.2 - Memory of configuration and settings data.
In case of black out the inside memory preserves the data. When the power supply is back, the detector, after an initialization
of about 2 minutes, returns to normal operation.
13 - DETECTOR’S ACTIVATION
13.1 - Set the jumper of Initial Setup JP1 in position 1-2 (OFF)
13.2 - The blue alignment led flashes in a particular way (2 slow flashes- 1 break - 2 fast flashes and then it repeats this
sequence)
13.3 - Install the cover. The operation of box closing must be done within 5 minutes. The level of the signal will be
decreased because of the absorption caused by the cover.
13.4 - The microcontrolled electronics wait 5 minutes for the installation of the cover and then start a quick procedure (1-
2 minutes time) to get the signal of the RK90R(S) back to 4.7-5V.
13.5 - When this adjustment procedure is finished the detector becomes operational. The blue alignment led stops flashing
in the way described above (detail chap.10.2) and it begins to flash as described in 10.6.
13.6 - The blue led will emit a short flash every 10 seconds, that indicates the normal operation of the detector. In case of
alarm, the frontal red led gets on and remains ON until the alarm state disappears or, if the memory function is set, until the
power supply is switched OFF for at least 5 seconds (see chap.14).

EDS - TECHNICAL INSTRUCTIONS
12
14 - OPERATIONALTEST
14.1 - Verification of the circuit sensitive to Obscuration.
The verification is carried out simply by darkening the reflector with an opaque screen.After 10 seconds, the detector’s
alarm relay must activate / deactivate (chap.5.2 - jumper JP8) and the frontal red alarm led must be switched ON.
After that, remove the screen and the alarm relay switches and the blue led restarts to flash every 10 seconds.
If the memory function is activated, (chap.14) for relay’s switching it is necessary to remove the power supply of the
detector for at least 5 seconds.
Attention!
• this test must be done darkening the reflector
• the screen must not be positioned in front of the detector
14.2 - Verification of the circuit sensitive to Turbulence/heat (if present) .
Verify the circuit sensitive to Turbulence putting a opaque screen in front of the reflector several times with the following
sequence (dark / light) and selecting sensitivity with the selector SW1:
• position 1....2 second dark - 2 second light for 10-12 times
• position 3....2 second dark - 2 second light for 8-10 times
• position 2....2 second dark - 2 second light for 6-8 times
• position 4....2 second dark - 2 second light for 4-6 times
After the correct sequence the turbulence relay must be activated.
15 - FRONTAL LEDS OPERATION
15.1 - The frontal leds of the detector, during normal operation , give the following indications (v. fig.9):
• normal operation: the blue Led flashes every 10 seconds
• alarm: the red led is constantly ON
• limit of compensation, interrupted beam, malfunction: the blue led flashes
16 - MAINTENANCE
16.1 - The instrument asks for a simple and periodic maintenance. It can be programmed or made automatic on special
signaling of the detector.
During the normal operation and after a certain time from the installation, if the maintenance is not performed, the detector,
because of the dirt deposited on the front surface of the cover, produces a Fault signal because of the drop of the signal
over the limit of compensation.
Then it will be the moment to proceed to cleaning of the surface so that to restablish the initial optical conditions.
16.2 - The operations to be carried out are the following:
• The detector must not be powered
• Clean the cover surface of the detector. You must use a wet cloth with water and some trace of soap. Chemical products
like alcohol, ammonia and similar must not be used . The cleaning of the surface is fundamental for the good detector
operation
• Verify the inside terminal board tightening the terminals in the case they are loose
• verify the optical alignment in the case of some deformations of the structure on which the detector is installed. In such
case then repeat the operations of the chap.8
• power up the device

EDS - TECHNICAL INSTRUCTIONS
13
17 - CHANGING THE SENSITIVITY
17.1- After the installation and after some operation time, if you want to modify the sensitivity of the detector,
read what follows:
• remove the cover (it is not necessary to power down the detector)
• modify the sensitivity acting on the SW2 selector
• close the cover

EDS - TECHNICAL INSTRUCTIONS
14
• Model: RK90-R, RK90-RS
• Type: reflective type Optical Beam Smoke Detector
• Manufacturer: EDS srl - V. Cà Nova Zampieri 6 - 37057 S.G. Lupatoto - Verona - ITALY
• Power Supply: 12/24 Vdc
• Power Supply Range: 11- 30 Vdc
• Optical Path Lenght: 50m (depends on the type of reflector used - fig.7)
• Max. covered area: 750 mq
• Protection against the inversion of polarity
• Digitally codified infrared beam
• Power Consumption:
18,6 mA in normal operation
34 mA with the alarm relay activated
34 mA with the turbulence relay activated
50 mA with both alarm and fault relay activated
• Infrared beam with digital coding that makes the detector
insensitive to flashes of forklifts and the like
• Special circuit that automatically compensates for the drift of the signal caused by the opacification of the optical parts by effect
of dust and dirt
• Maximum angular missallignment of the detector: +/- 0,2°
• Maximumangular missallignment ofthe reflector: +/- 0,2°
• Selection of the obscuration alarm threshold level with a 4 positions switch:
position 1 - 70%
position 2 - 60%
position 3 - 50%
position 4 - 40%
• Selection of the turbulence alarm threshold level with a 4 positions switch
• Alarm Relay activation delay: 10 s
• Fault Relay activation delay: 5 s
• Detector's recovery time with alarm memory dectivated: about 5 s
• Detector's recovery time with alarm memory activated: about 5 s (power supply off)
• Working temperature: -10 + 55°C
• Red LED indication: alarm status
• Blue LED indication: operation and compensation limit, interrupted beam, malfunction (fault)
• Alarm Relay: 1A/24 V dc
• Turbulence Relay: 1A/24 V dc
• Fault/Maintenance Relay: 1A/24 V dc
• 0-5 VAnalog Output for signal level measuring/visualization
• Dimensions: 162 x 62 x 62 mm.
• Enclosure: autoextinguishing policarbonate box
• Relevant Standards : EN 54-12, VDS2504-VDS2344
• Certifications: EN54-12/CPD (0786-CPD-20803), VDS2504-VDS2344 (G209131)
• Protection Index: IP 50 (IEC 529-144)
• Weight: 200 gr.
18 -TECHNICAL DATA

EDS - TECHNICAL INSTRUCTIONS
15
fig.1
fig.2
fig.3
fig.4
fig.5
fig.6
disco bianco
white disc
diodo fotoemittente
photoemitting diode
foro
hole
rivelatore riflettore
insert the
screwdriver tip
and turn
inserire la punta
del cacciavite
e ruotare
tacca
notch
0 102030405060
0
10
20
30
40
50
distanza [m]
diametro del raggio [cm]
svitare le due viti laterali
unscrew the two sides screws

EDS - TECHNICAL INSTRUCTIONS
16
fig.7
fig.8
NOITAREPOSDEL
TLOV deLeulB
rebmunsehsalF
deLdeR
rebmunsehsalF
5,0<FFOFFO
1-5,0FFO1
5,1-11FFO
2-5,111
5,2-22 FFO
3-5,221
5,3-33 FFO
4-5,331
7,4-4+/-elbairaVFFO
59,4-7,4NOthgiLFFO
59,4>
noitarutas NO
thgiLNOthgiL

EDS - TECHNICAL INSTRUCTIONS
17
SREPMUJGNITTES
repmuJnoitisoPtluseR
1PJ
2-1detavitcatonerudecorptnemgila
3-2detavitcaerudecorptnemgila
2PJ
2-1ON
nepoylamronyalermralAtcatnoc
3-2CNdesolcylamronyalermralAtcatnoc
3PJ
2-1ONnepoylamronyalerecnelubruTtcatno
c
3-2CNdesolcylamronyalerecnelubruTtcatnoc
4PJ
2-1CNdesolcylamronyalertluaFtcatnoc
3-2ONnepoylamronyalertlua
Ftcatnoc
5PJ
2-1detresnitonsiyromemmrala
3-2detresniyromemmrala
6PJ NOteser
FFO
7PJ
NO2/1nahtsselrewoprettimsnart
FFOrewoprettimsnartmumixam
9PJ
NOdetavitca-noitpotluaFnoitarucsbolatot
FFOdetavitcaton-noitpotluaFnoitarucs
bolatot
8PJ-2PJREPMUJGNITTES
repmuJnoitisoPtlureR8PJ
2PJ
2-1ONnepoyllamrontcatnocyalerMRALA
FFO
3-2CNdesolcyllamrontcat
nocyalerMRALA
2-1CNdesolcyllamrontcatnocyalerMRALA
NO
3-2ONnepoyllamrontcatnocyalerMRALA

EDS - TECHNICAL INSTRUCTIONS
18
1
2
3
1
2
3
1
2
3
123
123
JP4 JP3 JP2
V1
V2
V3
JP7
JP6
RX TX
JP1
JP5
1 2 3 4 5 6 7 8 9
alarm relay turbo relay fault relay
SW1 SW2
1
23
41
23
4
LED di allarme
P1
LED di guasto
Alarmrelais
Fehlerrelais
Turborelais
DS1654
JP9
JP8
fig.9

EDS - TECHNICAL INSTRUCTIONS
19
INTERNAL PARTS
P1 - Signal level regulation trimmer. P1 is factory preset to 50-60%, that corresponds to a 5V signal for the maximum
distance.
SW1 - Sensitivity selector for the turbulence circuit. Sensitivity increases from position 1 to 4. On position 1 it’s mimimum
and in position 4 position it’s maximum. Not present in -S version.
SW2 - Obscuration circuit selector.
• low sensitivity - position 1 - alarm level for 70% of obscuration
• low/medium sensitivity- position 2 - alarm level for 60% of obscuration
• medium/high sensitivity- position 3 - alarm level for 50% of obscuration
• high sensitivity- position 4 - alarm level for 40% of obscuration
V1-V2-V3 - Optical block regulation screws
JP1 - Activate/deactivate the alignment procedure. To activate the optical alignment procedure, the JP1 jumper must be
on 2-3 (ON) position. To deactivate the optical alignment procedure, JP1 jumper must be on 1-2 position (OFF)
• JP1 2-3 position (ON).......alignment procedure activated
• JP1 1-2 position (OFF) ....optical alignment deactivated
JP2 - JP3 - JP4 - Output relay contact setup jumpers, respectively for:Alarm relay, Turbulence (heat) relay (if present),
Fault relay
• 1-2 position - NO contact (output contact Normally Open)
• 2-3 position - NC contact (output contact Normally Closed)
The JP4 (relative to Fault relay) must be set in 1-2 position for the contact to be closed NC, because the Fault relay is
factory preset to activated.
The RK90 is factory preset with all jumpers set to NC.
JP5 - Jumper to activate or deactivate the alarm memory function (deactivated=autoreset of the detector)
• 1-2 position memory OFF. When the alarm state ends the detector resets (Auto reset)
• 2-3 position memory ON. In case of alarm, the detector maintains the alarm state till the power supply is switched off for
at least 5 second.
JP6 - Microprocessor Reset jumper (resets the SW)
JP7 - Jumper to set the transmitter power according to the distance between detector and the reflector.
The maximum distance between detector and reflector depends on the chosen reflector: 25m with FX01, 40m with FX02,
50m with FX03, etc
• JP7 OFF ......high power for distance between half and maximum path lenght
• JP7 ON ........low power for distance shorter than half maximum path lenght
JP8 - Set the working mode of the alarm relay

EDS - TECHNICAL INSTRUCTIONS
20
fig.10
TERMINAL BOARD
C1
N1
C2
N2
C3
N3
SIG
V+
V-
alimentazione 11-30 Vcc
contatto relè d'ALLARME
contatto relè TURBOLENZA
contatto relè GUASTO
segnale analogico 0-5V
RK90R
1
2
3
4
5
6
7
8
9