Reer JANUS TRX Quick start guide

Dichiarazione CE di conformità
EC declaration of conformity
Torino, 1/1/2010
REER SpA
via Carcano 32
10153 – Torino
Italy
dichiara che le barriere fotoelettriche JANUS TRX / M TRX sono Dispositivi Elettrosensibili di
Sicurezza (ESPE) di :
Tipo 4 (secondo la Norma CEI EN 61496-1:2005; CEI EN 61496-2:2007)
SIL 3 (secondo la Norma CEI EN 61508:2002)
SILCL 3 (secondo la Norma CEI EN 62061:2005 + CEI EN 62061/EC2:2008)
PL e (secondo la Norma UNI EN ISO 13849-1:2008)
declares that the JANUS TRX / M TRX photoelectric safety barriers are :
Type 4 (according the Standard IEC 61496-1:2004; IEC 61496-2:2006)
SIL 3 (according the Standard IEC 61508:1998)
SILCL 3 (according the Standard IEC 62061:2005)
PL e (according the Standard ISO 13849-1:2006)
Electro-sensitive Protective Equipments (ESPE)
realizzati in conformità alle seguenti Direttive Europee:
complying with the following European Directives:
2006/42/CE "Direttiva Macchine"
"Machine Directive"
2004/108/CE "Direttiva Compatibilità Elettromagnetica"
"Electromagnetic Compatibility Directive"
2006/95/CE "Direttiva Bassa Tensione"
"Low Voltage Directive"
e sono identiche all'esemplare esaminato ed approvato con esame di tipo CE da:
and are identical to the specimen examined and approved with a CE - type approval by:
TÜV SÜD Rail GmbH – Ridlerstrasse 65 – D-80339 – Muenchen – Germany
Carlo Pautasso Giancarlo Scaravelli
DirettoreTecnico Presidente
Technical Director President

8540568 • 23/12/2009 • Rev.3
PHOTOELECTRIC
SAFETY
BARRIER
JANUS TRX
INSTALLATION USE AND MAINTENANCE
INDICE
INTRODUCTION ..................................................................................................................... 2
PRINCIPLE OF OPERATION.................................................................................................. 3
INSTALLATION ....................................................................................................................... 4
POSITION ..................................................................................................................................... 5
MULTIPLE SYSTEMS .................................................................................................................. 5
SAFETY DISTANCE CALCULATION........................................................................................... 6
VERTICAL POSITION OF THE BARRIER ................................................................................... 7
ELECTRICAL CONNECTIONS .................................................................................................... 7
EXTERNAL CONNECTION.......................................................................................................... 8
DISTANCE BETWEEN REFLECTING SURFACES .................................................................... 9
MOUNTING AND OPTICAL ALIGNMENT ................................................................................. 11
OPERATION AND TECHNICAL DATA ................................................................................. 12
SIGNALS..................................................................................................................................... 12
CONFIGURATION AND OPERATION MODES......................................................................... 13
K1/K2 EXTERNAL CONTACTORS CONNECTION................................................................... 16
OUTPUT STATUS ...................................................................................................................... 16
TECHNICAL SPECIFICATIONS................................................................................................. 17
DIMENSIONS ........................................................................................................................ 18
CHECKOUTS AND MAINTENANCE .................................................................................... 18
TROUBLESHOOTING ................................................................................................................ 19
SPARE PARTS...................................................................................................................... 21
GUARANTEE ........................................................................................................................ 22

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8540568 • 23/12/2009 • Rev.3
This symbol stands by a very important warning concerning the safety of persons.
Its non-observance can cause a very serious risk for the exposed personnel.
INTRODUCTION
The JANUS TRX photoelectric barrier is a double-beam optoelectronic safety system.
It belongs to the family of Type 4 electrosensitive devices for the protection of personnel
exposed to risks arising from the use of hazardous machinery or plant, according to
standards IEC 61496-1,2 and EN 61496-1.
This barrier is composed of one active element J TRX E/R (containing the emitter and the
receiver units) and one passive element J TRX RR with a retroreflector
pre-aligned inside) which reflects the infrared beam (Figure 1).
The distance between the axis of the 2 beams (emitted and reflected) is 500mm (value
required by the EN999 European Normative for a 2-beams System).
A diagnostic display available on the active element provides the necessary informations for
a correct use of the device and the valuation of the possible operation failures.
JANUS TRX is ideal for protecting:
Automatic palletizing/depalletizing systems, packing and packaging machines, metal, wood,
marble and glass tool machines, materials handling.
If necessary, for any safety-related problems contact the competent safety
authorities or industrial associations in the country of use.
For applications in the food industry, please contact the manufacturer to ensure that
the barrier contains materials that are compatible with the chemical agents utilized.
The protective function of the optoelectronic devices is not effective in the following cases:
If the machine stopping control cannot be actuated electrically and it is not possible
to stop all dangerous machine movements immediately and at any time during the
operating cycle.
If the machine generates dangerous situations due to material being expelled or
falling from overhead.

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PRINCIPLE OF OPERATION
Figure 1 shows the JANUS TRX way of operation :
The active element J TRX E/R contains the emitter and the receiver units;
the emitted infrared beam, correctly reflected by the two pre-aligned deflection mirrors
of the passive element J TRX RR, is received by the receiver of the J TRX E/R.
With the protected area clear, the two PNP outputs of the active elements are in ON
condition (24VDC) and guarantee the normal operation of the connected machine.
When an object interrupts the infrared beams, the TRX PNP outputs are de-energized
(OFF condition - 0VDC). This condition permits to stop the moving body of the machine
(thanks to a specific stopping circuit).
ACTIVE
ELEMENT
J TRX E/R
EMITTER
RECEIVER
Figure 1
PASSIVE
ELEMENT
J TRX RR
1° MIRROR
2° MIRROR

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8540568 • 23/12/2009 • Rev.3
INSTALLATION
Before installing the JANUS TRX safety system, make sure that:
The safety system is only used as a stopping device and not as a machine control
device.
The machine control can be actuated electrically.
All dangerous machine movements can be interrupted immediately. In particular, the
machine stopping times must be known and, if necessary, measured.
The machine does not generate dangerous situations due to materials projecting or
falling from overhead; if that is not the case, additional mechanical guards must be
installed.
The minimum dimensions of the object that must be intercepted are greater than or
equal to the resolution of the JANUS TRX.
Knowledge of the shape and dimensions of the dangerous area enables the width and height
of the relative access area to be calculated.
Compare these dimensions with the maximum working range and the height of the
protected area in relation to the JANUS TRX.
The general instructions set out below must be taken into consideration before placing the
safety device in position.
Make sure that the temperature of the environment in which the system is to be
installed is compatible with the temperature parameters contained in the technical
data sheet.
Do not install the active unit close to bright or high-intensity flashing light sources.
Certain environmental conditions may affect the monitoring capacity of the
photoelectric devices. In order to assure correct operation of equipment in places
that may be subject to fog, rain, smoke or dust, the appropriate correction factors Cf
should be applied to the maximum working range values. In these cases:
where Pu and Pm are, respectively, the working and maximum range in meters.
Pu = Pm x Cf

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The recommended Cf factors are shown in the table below:
ENVIRONMENTAL CONDITION CORRECTION FACTOR Cf
Fog 0.25
Steam 0.50
Dust 0.50
Dense fumes 0.25
If the device is installed in places that are subject to sudden changes in temperature,
the appropriate precautions must be taken in order to prevent the formation of
condensation on the lenses, which could have an adverse effect on monitoring.
POSITION
The active J TRX E/R and passive elements J TRX RR must be positioned in such a way
that the access to the dangerous zone from overhead, bottom and from the opposite sides is
impossible without intercepting at least one of the two optical beams.
Figure 2
MULTIPLE SYSTEMS
JANUS TRX is composed of one active and one reflecting element; when more than
one JANUS TRX system is used, precaution must be taken to avoid optical interference
between them.
We recommend to interpose between two adjacent systems, opportune NOT
TRANSPARENT surfaces to stop the passage of the infrared beam.
WARNING
To reach the perfect JANUS TRX
installation, position both the
units as showed in Figure 2
(REER labels in the same side)
FRONT WINDOW
JANUS JANUS

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8540568 • 23/12/2009 • Rev.3
SAFETY DISTANCE CALCULATION
The barrier must be installed at a distance that is greater than or equal to the minimum
safety distance S, so that a dangerous point can only be reached after all hazardous
machine movements have stopped (Figure 3).
According to European standard EN999, the minimum safety distance Smust be calculated
using the following formula:
S = K (t1+ t2) + C
where:
S minimum safety distance mm
K approach speed of object to the dangerous area mm/sec
t1response time of the safety barrier in seconds sec
t2
machine response time, in seconds, meaning the time
required for the machine to interrupt the dangerous movement
following transmission of the stop signal
sec
c additional distance mm
The non-observance of the correct safety distance reduces or cancels the protective
action of the light curtain.
If the position of the barrier does not prevent the operator from having access to the
dangerous area without being detected, additional mechanical guards must be
installed to complete the system.
S=Safety distance
Figure 3
HAZARDOUS
MACHINE
S
PASSIVE
ELEMENT
ACTIVE
ELEMENT
MECHANICAL
PROTECTIONS

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VERTICAL POSITION OF THE BARRIER
These models are suitable for the protection of
the entire body and must not be used to protect
arms or legs.
The minimum safety distance Sis calculated
according to the following formula:
S = 1600 (t1+ t2) + 850
ÎThe recommended height H from the
reference surface G (ground) is as follows:
Figure 4
MODEL BEAMS Reccomended Height H (mm)
J TRX E/R 2 400 – 900
ELECTRICAL CONNECTIONS
WARNINGS
Before making the electrical connections, make sure that the supply voltage complies with
the one specified in the technical data sheet.
Janus TRX must be supplied with 24Vdc±20% power supply. The external power
supply must comply with the standard EN 60204-1.
The electrical connections must be made according to the diagrams in this manual. In
particular, do not connect other devices to the connectors of the active unit.
To guarantee reliability of operation, when using a diode jumper supply unit, its output
capacity must be at least 2000µF for each absorbed A.
safety
barrier
point of
dan
g
e
r
direction
of
approach
reference plane

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8540568 • 23/12/2009 • Rev.3
Connector pins.
Figure 5
EXTERNAL CONNECTION
PIN COLOR NAME TYPE DESCRIPTION OPERATION
2 Brown 24VDC - 24VDC power supply -
7 Blue 0VDC - 0VDC -
8 Red PE - Ground connection -
1 White OSSD1 OUTPUT
3 Green OSSD2 OUTPUT Safety static outputs PNP active high
5 Grey EXT_SEL_A INPUT
6 Pink EXT_SEL_B INPUT
Barrier
configuration
4 Yellow EXT_K1_K2 INPUT Feedback external
contactors
According the normative
EN61131-2
(ref. Table 2 and Table 3)
Table 1
Warnings regarding the connection cables
•For connections over 50m long, use cables with a cross-section area of
1 mm2.
•The power supply to the barrier should be kept separate from that to other
electric power equipment (electric motors, inverters, frequency converters) or
other sources of disturbance.
•Connect the active element to the ground output.
•The connection cables must follow a different route to that of the other
power cables.

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DISTANCE BETWEEN REFLECTING SURFACES
The presence of reflecting surfaces in proximity of the photoelectric barrier may generate
spurious reflections that prevent monitoring. With reference to Figure 6, object Ais not
detected because surface Sreflects the beam and closes the optical path between the active
and passive elements.
A minimum distance dmust therefore be maintained between any reflecting surfaces and
the protected area. The minimum distance dmust be calculated according to the distance l
between the active and passive unit, considering that the angle of projection and
reception is 4°.
Figure 6
Figure 7 illustrates the values for the minimum distance dthat must be maintained when the
distance lbetween the active and passive elements is changed.