Reer EOS2 A, EOS2 X, EOS2, EOS2 XM, EOS2 XS User Manual
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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 EOS2 sono Dispositivi Elettrosensibili di Sicurezza (ESPE) di :
Tipo 2 (secondo la Norma CEI EN 61496-1:2005; CEI EN 61496-2:2007)
SIL 2 (secondo la Norma CEI EN 61508:2002)
SILCL 2 (secondo la Norma CEI EN 62061:2005 + CEI EN 62061/EC2:2008)
PL d (secondo la Norma UNI EN ISO 13849-1:2008)
declares that the EOS2 photoelectric safety barriers are :
Type 2 (according the Standard IEC 61496-1:2004; IEC 61496-2:2006)
SIL 2 (according the Standard IEC 61508:1998)
SILCL 2 (according the Standard IEC 62061:2005)
PL d (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
Direttore Tecnico Presidente
Technical Director President
EOS2 SAFETY LIGHT CURTAIN
1
English
SSAAFFEETTYY LLIIGGHHTT CCUURRTTAAIINN EEOOSS22
SUMMARY
INTRODUCTION.................................................................................................................................................3
PRINCIPLE OF OPERATION ...........................................................................................................................4
INSTALLATION ...................................................................................................................................................5
Positioning ........................................................................................................6
Master/Slave Positioning ....................................................................................7
Calculation of safety distance ............................................................................8
Multiple systems................................................................................................9
Use of deflecting mirrors .................................................................................10
Distance from reflective surfaces .....................................................................11
Mechanical assembly and optical alignment.....................................................12
Vertical positioning of the light curtain............................................................13
Models with 30, 40mm resolution ................................................................13
Models with 50, 90mm resolution ................................................................13
Multibeam Models ........................................................................................14
Horizontal positioning of the light curtain .......................................................14
Electrical connections ......................................................................................15
Layout of the connectors on MASTER/SLAVE light curtain .............................15
Emitter connections......................................................................................16
Receiver connections ....................................................................................17
Warnings regarding connection cables..........................................................18
Configuration and operating modes (Master Models / With integrated control
functions) ........................................................................................................19
Automatic operation.....................................................................................19
Manual operation..........................................................................................19
Connection of external contactors K1 and K2 ...............................................20
Examples of connection with REER safety modules .......................................21
OPERATION AND TECHNICAL DATA .................................................................................................... 22
Light signals ....................................................................................................22
Emitter light signals......................................................................................22
Receiver light signals....................................................................................22
Internal TEST function......................................................................................23
Periodical system TEST ....................................................................................23
Status of the outputs .......................................................................................23
Technical specifications ...................................................................................24
Dimensions......................................................................................................26
CHECKOUTS AND MAINTENANCE.......................................................................................................... 27
Checking of light curtain efficiency..................................................................27
Troubleshooting ..............................................................................................29
Accessories/Spares ..........................................................................................31
GUARANTEE...................................................................................................................................................... 32
8540738 • 2nd December 2009 • Rev.2
EOS2 SAFETY LIGHT CURTAIN
ABBREVIATIONS AND SYMBOLS USED IN THIS MANUAL
FE = Functional earth (earth connection)
M/S = Master/Slave System
OSSD = Output Signal Switching Device (Light curtain’s solid state safety outputs)
TX = Safety light curtain emitter.
RX = Safety light curtain receiver.
Hand protection light curtains
Arm and leg protection light curtains.
Full body protection light grids.
This symbol indicates an important warning for personal safety. Failure to comply
with this warning may result in high level risk for exposed personnel.
Î
This symbol indicates an important warning.
English
2 8540738 • 2nd December 2009 • Rev.2
EOS2 SAFETY LIGHT CURTAIN
INTRODUCTION
The EOS2 light curtain is an optoelectronic safety device belonging to the category of
Type 2 electro-sensitive protective equipment for the protection of personnel exposed to
risks inherent in the use of dangerous machines or plants, complying with the
IEC 61496-1,2 and EN 61496-1 standards.
The EOS2 is available in three different versions:
1. EOS2 A
Type 2 light curtain consisting of Emitter plus Receiver with automatic reset.
2. EOS2 X (With integrated control functions)
Type 2 light curtain consisting of Emitter plus Receiver with integration of additional
functions such as control of feedback from any external contactors and management of
manual/automatic operation.
3. EOS2 XM/XS (MASTER/SLAVE)
Type 2 light curtain (with integrated control functions) comprising two (or three) TX/RX
pairs (connected in series), one of which comprising the MASTER light curtain (with
integrated functions) and one (or two) the SLAVE light curtain.
A set of indicator leds on the Emitter and Receiver provide the information needed for a
correct use of the device and for the assessment of any malfunction. The automatic fault
sensing system permits independent detection by the EOS2 light curtain of any
dangerous fault in a time equal to the light curtain response time.
For any safety problem, if necessary, consult the safety authorities of the country of
use or the competent industrial association.
For applications in the food industry, consult the manufacturer to verify compatibility
of light curtain materials with the chemical agents used.
The protection capability of optoelectronic safety devices is not effective in cases in
which:
- The machine stopping device cannot be actuated electrically and it is not possible
to stop all dangerous machine movements immediately and at any time during the
operating cycle.
- The dangerous condition is associated with the falling of objects from above or
ejection of these from the machine.
- Anomalous forms of light radiation are present (for example, use of cablelless
control devices on cranes, radiation from weld spatter, etc).
In this case additional measures may be necessary to ensure that the ESPE does not
fail to danger.
English
8540738 • 2nd December 2009 • Rev.2 3
EOS2 SAFETY LIGHT CURTAIN
PRINCIPLE OF OPERATION
If the protected area is clear, the two outputs on the Receiver are active and
enable the machine to which they are connected to operate normally.
Each time that an object bigger than or equal in size to the resolution of the
system intercepts the optical path of one or more beams, the Receiver deactivates
its own outputs.
This condition enables dangerous machine movements to be stopped (by means
of an adequate machine emergency stop circuit).
Î
Resolution is the smallest sized object that, passing through the protected area,
interrupts at least one of the beams generated by the light curtain (Figure 1),
causing certain intervention of the device and consequent stopping of the
dangerous movement of the machine.
Figure 1 - Resolution
P = Pitch between two lenses
D = Diameter of a lens
R = Resolution = P+D
P
R
D
Receiver
Emitter
Beam
Resolution remains constant regardless of working conditions as it depends only on the
geometric characteristics of the mirrors and on the centre distance between two adjacent
lenses.
The height of the protected area is the effective height protected by the safety light
curtain. If the curtain is positioned horizontally, this value indicates the depth of the
protected area.
The working range indicates how far the emitter and receiver can be separated and
function properly.
EOS2 is available with the following resolutions:
• 30mm (protected heights from 150mm to 1500mm): PROTECTION OF THE HANDS.
• 40mm (protected heights from 300mm to 1500mm): PROTECTION OF THE HANDS.
• 50mm and 90mm (protected heights from 300mm to 1800mm):
PROTECTION OF THE LIMBS.
English
The EOS2 is also available in a Multibeam version with a distance between the
mirrors of:
• 500mm (2 beams), 400mm (3 beams), 300mm (4 beams).
PROTECTION OF THE BODY.
4 8540738 • 2nd December 2009 • Rev.2
EOS2 SAFETY LIGHT CURTAIN
INSTALLATION
Before installing the EOS2 safety system, check all the conditions listed below:
The level of protection of EOS2 (Type 2, SIL2, SILCL2, PLd) must be compatible with
the level of danger of the system to be protected.
The safety system is used only as a stopping device and not to control the machine.
The machine movement is actuated electrically.
All dangerous movements of the machine can be interrupted immediately. In
particular, the machine stopping times must be known and, if necessary, measured.
materials from The machine must not generate hazards due to projection or falling of
above; otherwise, additional mechanical guarding must be provided.
etected must be greater than or equal to the The smallest size object to be d
resolution of the selected model.
Knowing the shape and dimensions of the da
ngerous area, it is possible to calculate the
idth and height of the related access area :
w
e maximum working range and the height of the Compare these dimensions with th
protected area of the model used.
Before positioning the safety device, comply with the following general indications:
Check that the temperature of the environment in which the system is installed is
compatible with the operating temperature parameters indicated on the product label
and in the technical data.
Do not position the Emitter and the Receiver close to very bright or flashing sources
of light.
Particular operating conditions may affect the sensing level of photo-electric devices.
In environments characterised by fog, rain, fumes or dust, to always guarantee
correct operation of the appliance, it is advisable to apply suitable correction factors
Cf so as to maximum working ran cases: ge values. In these
where Pu
Pu = Pm x Cf
and Pm are, respectively, the working and maximum range expressed in
metres.
The recommende e indic
OPERATING CONDITIONS CORRECTI
d correction factors CF ar ated in the table below.
ON FACTOR Cf
Fog 0.25
Vapours 0.50
Dust 0.50
Dense fum 0.25 es
Table 1 – CF correction factors
n changes in If the device is installed in environments characterised by sudde
English
temperature, suitable precautions must be taken to prevent the formation of
condensation on the mirrors, which could impair detection capability.
8540738 • 2nd December 2009 • Rev.2 5
EOS2 SAFETY LIGHT CURTAIN
Positioning
The Emitter EOS2E and the Receiver EOS2R must be positioned so that it is
impossible to access the dangerous area from above, from below and from the
sides without intercepting one of the beams. Useful indications for correct
positioning of the light curtain are provided in the figure below.
Incorrect positioning of the light curtain
Correct positioning of the light curtain
Figure 2 - Positioning
English
6 8540738 • 2nd December 2009 • Rev.2
EOS2 SAFETY LIGHT CURTAIN
Master/Slave Positioning
In addition to standard models (that can be positioned either horizontally or vertically),
EOS2 can be purchased in a MASTER/SLAVE configuration. This configuration comprises
two (or three) pairs of light curtains in which the two (or three) Emitters and the two (or
three) Receivers are connected in series.
SLAVE
SLAVE
SLAVE2
MASTER
MASTER
Figure 3 – Examples of Master/Slave configurations
The connection cable between the master and slave may be up to 50 metres in length.
This characteristic permits configuration of an application with two light curtains
positioned one at the front and one at the rear of the dangerous machine, with a single
connection towards the machine power and control circuits (Figure 4).
English
Figure 4 - Example of Master/Slave application with mechanical guards
8540738 • 2nd December 2009 • Rev.2 7
EOS2 SAFETY LIGHT CURTAIN
Calculation of safety distance
The light curtain must be positioned at a distance equal to or greater than the minimum
safety distance S so that the dangerous point can be reached only after stopping the
dangerous movement of the machine (Figure 5).
According to the EN999:2008 European standards, the minimum safety distance S must
be calculated using the following formula :
S = K (t1 + t2) + C
C = 8 (d-14)
where:
S Minimum safety distance mm
K Operator approach speed to the dangerous area mm/sec
t1 Total response time of the light curtain, in seconds sec
t2
Response time of the machine in seconds, i.e. the time taken by
the machine to stop the dangerous movement from the moment
in which the stop signal is transmitted
sec
C
Additional distance that varies according to the application
1
mm
d Resolution mm
Table 2 – Safety distance
Failure to comply with the safety distance reduces or impairs the protection function
of the light curtain.
If positioning of the light curtain does not prevent the operator from accessing the
dangerous zone without being detected, additional mechanical guards must be
installed.
DANGEROUS ZONE
Figure 5 – Safety distance S
English
1
For further information on additional safety distance, refer to EN999:2008.
8 8540738 • 2nd December 2009 • Rev.2
EOS2 SAFETY LIGHT CURTAIN
Multiple systems
When several EOS2 are used, precautions must be taken to prevent optical interference
between these: position the elements so that the beam of the Emitter of one system is
received only by its respective Receiver.
Figure 6 provides examples of correct positioning of two photo-electric systems. Incorrect
positioning may cause interference, with possible malfunction of the system.
Systems installed side by side: A
Adjacent positioning of the two emitters
Systems installed one above the other: B
“L” installation: C
Crossed positioning between emitters and
receivers
Figure 6 – Multiple systems
Î
This precaution is not necessary in the case of MASTER/SLAVE systems.
English
8540738 • 2nd December 2009 • Rev.2 9
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