SAFEasy SF2 Series Manuel utilisateur
SF2 Series Instruction Manual
INDEX
1. GENERAL INFORMATION .......................................................................................... 1
1.1. General description of the SAFEasyTM safety light curtain.................................. 1
1.2. How to choose the device ................................................................................... 3
1.3. Typical applications ............................................................................................. 5
1.4. Safety information ............................................................................................... 6
2INSTALLATION MODE................................................................................................ 7
2.1. Precautions to be observed for the choice and installation of the device .......... 7
2.2. General information on device positioning .......................................................... 8
2.2.1. Minimum installation distance .............................................................. 10
2.2.2. Minimum distance from reflecting surfaces .......................................... 12
2.2.3. Installation of several adjacent safety light curtains ............................. 14
2.2.4. Use of deviating mirrors........................................................................ 15
3. MECHANICAL MOUNTING ....................................................................................... 16
4. ELECTRICAL CONNECTIONS ................................................................................. 18
4.1. Notes on the connections.................................................................................. 19
4.2. TEST timing diagrams....................................................................................... 20
5. ALIGNMENT PROCEDURES .................................................................................... 23
5.1. Correct alignment procedure (AUTOMATIC RESTART) .................................. 23
5.2. Correct alignment procedure (MANUAL RESTART) ........................................ 25
6. RESTART MODE ....................................................................................................... 27
7. DIAGNOSTIC FUNCTIONS ....................................................................................... 29
7.1. Visualisation of the functions............................................................................. 29
7.2. Fault messages and Diagnostics ...................................................................... 30
8. CHECKS AND PERIODICAL MAINTENANCE ......................................................... 31
8.1. Maintenance...................................................................................................... 31
8.2. General information and useful data ................................................................. 32
8.3. Warranty............................................................................................................ 32
9. TECHNICAL DATA .................................................................................................... 33
10. LIST OF THE AVAILABLE MODELS ........................................................................ 34
11. DIMENSIONS ............................................................................................................. 35
12. ACCESSORIES.......................................................................................................... 36
Instruction Manual SF2 Series
1
1. GENERAL INFORMATION
1.1. General description of the SAFEasyTM safety light curtain
The SAFEasyTM safety light curtains – SF2 Series – are optoelectronic
multibeam devices that are used to protect working areas that, in
presence of machines, robots and automatic systems in general, can
become dangerous for operators that can get in touch, even
accidentally, with moving parts.
The SAFEasyTM devices are Type 2 intrinsic safety systems used as
accident-prevention protection devices and are manufactured in
accordance with the international Standards in force for safety, in
particular:
CEI EN 61496-1: 2004 Safety of machinery: electro-
sensitive protective equipment -
General requirements and test.
CEI IEC 61496-2: 1997 Safety of machinery: electro-
sensitive protective equipment -
Particular requirements for
equipment using active opto-
electronic protective devices.
The device, consisting in one
emitting and one receiving unit
housed inside strong aluminium
profiles (Fig.1), generates infrared
beams that detect any opaque
object positioned within the light
curtain detection field.
The emitting and the receiving
units are equipped with command
and control functions (no external
control unit is required).
The connections are made through
a M12 connector located in the
lower side of the profile.
The synchronisation between the
emitter and the receiver takes
place optically, i.e. no electrical
connection between the two units is required.
Fig. 1
SF2 Series Instruction Manual
2
The microprocessors guarantee the check and the management of the
beams that are sent and received through the units: the
microprocessors – through some LEDs – inform the operator about the
general conditions of the light curtain and about eventual faults (see
section 7 “Diagnostic functions”).
During installation, two yellow LEDs facilitate the alignment of both
units (see section 5 “Alignment procedures”).
As soon as an object, a limb or the operator’s body accidentally
interrupts the beams sent by the emitter, the receiver immediately
opens the OSSD output and blocks the machine (if correctly connected
to the OSSD).
Note: The following abbreviations will be used in this manual as
they are defined by the Standards in force:
AOPD Active opto-electronic protective device
ESPE Electro-sensible protective equipment
MPCE Machine primary control element
OSSD Output signal switching device (switching output)
TX Emitting device
RX Receiving device
Some parts or sections of this manual containing important information
for the operator are preceded by a note:
Notes and detailed descriptions about particular characteristics of the
SAFEasyTM safety devices in order to better explain their functioning;
special instructions regarding the installation process.
The information provided in the paragraphs following this symbol is
very important for safety and may prevent accidents.
Always read this information accurately and carefully follow the advice
to the letter.
This manual contains all the information necessary for the selection
and operation of the SAFEasyTM safety devices.
However, specialised knowledge not included in this technical
description is required for the planning and implementation of a safety
light curtain on a power-driven machine.
As the required knowledge may not be completely included in this
manual, we suggest the customer to contact DATASENSOR Sales
Technical Service for any necessary information relative to the
functioning of the SF2 series light curtains and the safety rules that
regulate the correct installation (see section 8 “Checks and periodical
maintenance”).
Instruction Manual SF2 Series
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1.2. How to choose the device
There are at least three different main characteristics that should be
considered when choosing a safety light curtain:
•The resolution strictly depending on the part of the body to be
protected.
R = 30mm hand protection
Type 2
R = 50 mm
R = 90 mm
presence control
protection
(*) safety light curtain models with 50 mm and 90 mm resolution present sensitive
areas with inferior resolution with respect to the declared value.
The resolution of the device is the minimum dimension which an
opaque object must have in order to obscure at least one of the beams
that constitute the sensitive area.
As shown in Fig.2, the resolution only depends on the geometrical
characteristics of the lenses, diameter and distance between centres,
and is independent of any environmental and operating condition of
the safety light curtain.
Fig. 2
The resolution value is obtained applying the following formula:
R = I + d
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•The height of the protected area
It is important to distinguish between “Height of the sensitive area”
and “Height of the controlled area” (Fig.3).
- The height of the sensitive area is the distance between the lower
and the upper limits respectively of the first and the last lens.
- The height of the controlled area is the effectively protected area. It
delimits the area where an opaque object with larger or equal
dimensions respect to the resolution of the safety light curtain may
certainly cause the interruption of a beam.
Fig. 3
•The safety distance
It is important to carefully calculate the distance between the point
where the safety device will be placed and the possible danger
associated with the machine to be protected (see section 2
“Installation mode” for the calculation of the safety distance).
Instruction Manual SF2 Series
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1.3. Typical applications
The SAFEasyTM safety light curtains are used in all automation fields
where it is necessary to control and protect the access to dangerous
zones.
In particular they are used to stop the moving mechanical parts of:
- Automatic machines
- Packaging machines, handling machines, storing machines
-Textile, ceramic, wood and leather working machines.
- Automatic and semi–automatic assembly lines
- Automatic warehouses
In food industry applications, DATASENSOR Technical Service has to
verify the compatibility of the material of the safety light curtain housing
with any chemical agents used in the production process.
The following pictures show some main applications.
SF2 Series Instruction Manual
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1.4. Safety information
The following points must be observed for a correct and safe use of
the SAFEasyTM safety device:
•The stopping system of the machine must be electrically controlled.
•This control system must be able to instantly stop the dangerous
movement of the machine during all the phases of the working cycle.
•Mounting and connection of the safety light curtain must only be
carried out by qualified personnel, according to the indications
included in the special sections (refer to sections 2; 3; 4; 5; 6).
•The safety light curtain must be securely placed in a particular
position so that access to the danger zone is not possible without the
interruption of the beams (see section 2 “Installation mode”).
•The personnel operating in the dangerous area must be well trained
and must have adequate knowledge of all the operating procedures
of the safety light curtain.
•The TEST button must be located outside the protected area
because the operator must check the protected area during all the
Test and Reset operations.
Instruction Manual SF2 Series
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2 INSTALLATION MODE
2.1. Precautions to be observed for the choice and installation of the
device
•Make sure that the protection level assured by the SAFEasyTM (Type
2) is compatible with the real danger level of the machine to be
controlled, according to EN 954-1.
•The outputs (OSSD) of the ESPE must be used as stopping devices
of the machine and not as command devices. The machine must
have a special RESTART command.
•The dimension of the smallest object to be detected must be larger
than the resolution level of the ESPE.
•The ESPE must be installed in a place compatible with the technical
characteristics shown in section 9.
•Do not place the device, in particular the receiver unit, near any
intense light sources.
•Strong electromagnetic interferences can compromise the correct
functioning of the device. DATASENSOR suggests contacting its
own Technical Service when this problem occurs.
•The operating distance of the device can be reduced by 50% in the
presence of smog, fog or airborne dust.
•A sudden change in environment temperature, with very low
minimum peaks, can generate a small condensation layer on the
lenses and so jeopardize functioning.
SF2 Series Instruction Manual
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2.2. General information on device positioning
The device should be carefully positioned, in order to reach a very high
protection standard. Access to the hazardous area must only be
possible by passing through the protecting safety light beams.
Fig. 4a shows some examples of possible access to the machine from
the top and the bottom sides. These situations may be very dangerous
so and so the installation of the safety light curtain at sufficient height
in order to completely cover the access to the dangerous area (Fig.4b)
becomes necessary.
Fig. 4a
Fig. 4b
NO
Instruction Manual SF2 Series
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In normal operating conditions, machine starting must not be possible
while operators are inside the hazardous area.
When the installation of the safety light curtain very near to the
dangerous area is possible, a second light curtain must be mounted in
a horizontal position in order to prevent any lateral access (as shown
in Fig. 5b).
Fig. 5a Fig. 5b
If the operator is able to enter the dangerous area and is not detected
by the beams, an additional mechanical protection must be mounted to
prevent the access.
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