PSEN op4F/H-s-...../1
Safety light curtains with infrared beams
OPERATING MANUAL
1001422-EN-03
This document is a translation of the original document.
All rights to this documentation are reserved by Pilz GmbH &
Co. KG. Copies may be made for internal purposes.
Suggestions and comments for improving this documentation
will be gratefully received.
Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®,
SafetyBUS p®, SafetyEYE®, SafetyNET p®, the spirit of
safety® are registered and protected trademarks of
Pilz GmbH & Co. KG in some countries.
Pilz GmbH & Co. KG
Felix-Wankel-Straße 2
73760 Ostfildern, Germany
Telephone: +49 711 3409-0
Telefax: +49 711 3409-133
E-Mail: pilz.gmbh@pilz.de
www.pilz.com
PSEN op4F/H-s Series Instruction Manual
INDEX
1. GENERAL INFORMATION .......................................................................................... 1
1.1. General Description of the safety light curtains ................................................... 1
1.1.1. Package contents ................................................................................... 3
1.2. New features compared PSEN op4F-s series (with EDM function) .................... 3
1.3. How to choose the device ................................................................................... 4
1.3.1. Resolution .............................................................................................. 4
1.3.2. Controlled height .................................................................................... 5
1.3.3. Minimum installation distance ................................................................ 6
1.4. Typical applications ............................................................................................. 8
1.5. Safety information ............................................................................................. 11
2. INSTALLATION MODE .............................................................................................. 12
2.1. Precautions to be observed for the choice and installation ............................... 12
2.2. General information on device positioning ........................................................ 13
2.2.1. Minimum installation distance .............................................................. 14
2.2.2. Minimum distance from reflecting surfaces .......................................... 15
2.2.3. Distance between homologous devices ............................................... 17
2.2.4. Emitter and receiver orientation ........................................................... 20
2.2.5. Use of deviating mirrors ....................................................................... 20
2.2.6. Controls after first installation ............................................................... 21
3. MECHANICAL MOUNTING ....................................................................................... 23
4. ELECTRICAL CONNECTIONS ................................................................................. 26
4.1. Notes on connections ........................................................................................ 28
4.2. Ground connection ............................................................................................ 31
5. ALIGNMENT PROCEDURE ...................................................................................... 33
5.1. Correct alignment procedure ............................................................................. 34
6. FUNCTIONING MODE ............................................................................................... 36
6.1. Restart mode ..................................................................................................... 36
6.2. Test function ...................................................................................................... 37
6.3. Reset function ................................................................................................... 37
6.4. EDM function ..................................................................................................... 38
6.5. Alignment aid function ....................................................................................... 39
7. DIAGNOSTIC FUNCTIONS ....................................................................................... 40
7.1. User interface .................................................................................................... 40
7.2. Dagnostic messages ......................................................................................... 41
8. PERIODICAL CHECKS ............................................................................................. 44
8.1. General information and useful data ................................................................. 45
9. DEVICE MAINTENANCE ........................................................................................... 46
9.1. Product disposal ................................................................................................ 46
10. TECHNICAL DATA .................................................................................................... 47
11. LIST OF AVAILABLE MODELS ................................................................................ 48
12. OVERALL DIMENSIONS ........................................................................................... 49
13. OUTFIT ....................................................................................................................... 50
14. ACCESSORIES .......................................................................................................... 51
14.1 Angled fixing bracket mounting ......................................................................... 52
15. GLOSSARY ................................................................................................................ 57
Instruction Manual PSEN op4F/H-s Series
1. GENERAL INFORMATION
1.1. General Description of the safety light curtains
The safety light curtains of the PSEN op4F/H-s 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 light curtains of the PSEN op4F/H-s series are Type 4 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 IEC 61496-1: 2004 Safety of machinery: electrosensitive
protective equipment. Part 1:
General prescriptions and tests.
CEI IEC 61496-2: 2006 Safety of machinery: electrosensitive
protective equipment - Particular
requirements for equipment using
active optoelectronic protective
devices.
The device, consisting of one emitter and one receiver housed inside
strong aluminium profiles, generates infrared beams that detect any
opaque object positioned within the light curtain detection field.
The emitter and the receiver are equipped with the command and
control functions. 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.
The microprocessor guarantees the check and the management of
the beams that are sent and received through the units: The
microprocessor LEDs inform the operator about the general
conditions of the safety light curtain (see section 7 “Diagnostic
functions”).
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PSEN op4F/H-s Series Instruction Manual
The device consists in 2 units that, according to the model, are
composed by one or several emitting and receiving modules. The
receiver checks the control operations and safety actions.
During installation, an user interface facilitates the alignment of both
units (see section 5 “Alignment procedure”).
As soon as an object, a limb or the operator’s body accidentally
interrupts one or some of the infrared beams sent by the emitter, the
receiver immediately opens the OSSD outputs and blocks the MPCE
machine (if correctly connected to the OSSD).
Some parts or sections of this manual containing important
information for the user or installing operator are preceded by a note:
Notes and detailed descriptions about particular characteristics of the
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 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 Pilz Technical Service for any
necessary information relative to the functioning of the PSEN
op4F/H-s light curtains and the safety rules that regulate the correct
installation (see section 8 “Periodical checks”).
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Instruction Manual PSEN op4F/H-s Series
1.1.1. Package contents
• Package contains the following objects:
• Receiver (RX)
• Emitter (TX)
• Installation Quick Guide of PSEN op4F/H-s curtain
• Biannual checklist and periodical maintenance schedule
• CD with instruction manual and other documents
• 4 angled fixing brackets and specific fasteners
• 2 angled fixing brackets for models with heights included between
1200 and 1800 mm
1.2. New features compared PSEN op4F-s series (with EDM function)
With respect to PSEN op4F-s (EDM) series, the PSEN op4F/H-s.../1
Series safety light curtain series presents new important features:
• Higher operating distance
• Shorter response time (see sect.10 “Technical Data”)
• Range enlargement with 150 to 1800 mm controlled heights
• New fastening system with rotating brackets
• TEST line with reversed activation logics (active high)
• Advanced alignment for receiver and transmitter units
Furthermore, PSEN op4F-s has 2 selectable functions, i.e.:
• EDM function
• Manual/automatic Restart
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PSEN op4F/H-s Series Instruction Manual
1.3. How to choose the device
There are at least three different main characteristics that should be
considered when choosing a safety light curtain, after having
evaluated the risk assessment:
1.3.1. Resolution
The resolution of the device is the minimum dimension that an
opaque object must have in order to obscure at least one of the
beams that constitute the sensitive area.
The resolution strictly depends on the part of the body to be
protected.
R = 14mm Finger protection
Type 4
R = 30 mm Hand protection
Type 4
As shown in Fig.1, the resolution only depends on the geometrical
characteristics of the lenses, diameter and distance between centres,
and is independent of any environmental and operating conditions of
the safety light curtain.
Fig. 1
The resolution value is obtained applying the following formula:
R = I + d
where:
I = Distance between two adjacent optics
d = Lens diameter
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Instruction Manual PSEN op4F/H-s Series
Controlled
(mm)
Hp
Reference
1.3.2. Controlled height
The controlled height is the height protected by the safety light
curtain (Hp)
Fig. 2
The PSEN op4F/H-s controlled height is delimited by the yellow line
pad-printed on the front glass and by the dimensions listed in the
table:
xx = Resolution (14 mm – 30 mm)
Model
PSEN op4F/H-s-XX-015/1 150
PSEN op4F/H-s-XX-030/1 300
PSEN op4F/H-s-XX-045/1 450
PSEN op4F/H-s-XX-060/1 600
PSEN op4F/H-s-XX-075/1 750
PSEN op4F/H-s-XX-090/1 900
PSEN op4F/H-s-XX-105/1 1050
PSEN op4F/H-s-XX-120/1 1200
PSEN op4F/H-s-XX-135/1 1350
PSEN op4F/H-s-XX-150/1 1500
PSEN op4F/H-s-XX-165/1 1650
PSEN op4F/H-s-XX-180/1 1800
height Hp
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PSEN op4F/H-s Series Instruction Manual
1.3.3. Minimum installation distance
The safety device must be positioned at a specific safety distance
(Fig. 3). This distance must ensure that the dangerous area cannot
be reached before the dangerous motion of the machine has been
stopped by the AOPD.
The safety distance depends on 4 factors, according to the EN-999
Standard:
• Response time of the AOPD (the time between the effective beam
interruption and the opening of the OSSD contacts).
• Machine stopping time (the time between the effective opening of
the contacts of the AOPD and the real stop of the dangerous
motion of the machine).
• AOPD resolution.
• Approaching speed of the object to be detected.
Fig. 3
The following formula is used for the calculation of the safety
distance:
S = K (t
+ t2) + C
1
where:
S = Minimum safety distance in mm.
K = Speed of the object, limb or body approaching the
dangerous area in mm/sec.
t
= Response time of the AOPD in seconds
1
(see section 10 “Technical data”)
t2 = Machine stopping time in seconds.
d = Resolution of the system.
C = Additional distance based on the possibility to insert the body or one
of body parts inside the dangerous area before the protective
device trips.
C = 8 (d -14) for devices with resolution ≤ 40 mm.
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Instruction Manual PSEN op4F/H-s Series
NOTE: K value is:
2000 mm/s if the calculated value of S is ≤ 500 mm
1600 mm/s if the calculated value of S is > 500 mm
When devices with > 40 mm resolution are used, the height of the top
beam has to be ≥ 900 mm (H2) from machine supporting base while
the height of the bottom beam has to be ≤ 300 mm (H1).
If the safety light curtain must be mounted in a horizontal position
(Fig.4), the distance between the dangerous area and the most
distant optical beam must be equal to the value calculated using the
following formula:
S = 1600 mm/s (t
+ t2) + 1200 – 0.4 H
1
where:
S = Minimum safety distance in mm.
= Response time of the AOPD in seconds
t
1
(see section 10 “Technical data”)
t2 = Machine stopping time in seconds.
H = Beam height from ground. This height must always be less than
1,000 mm.
Fig. 4
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PSEN op4F/H-s Series Instruction Manual
T
0.393 sec
0.394 sec
Practical examples
Let's suppose to have a light curtain with height = 600 mm
To calculate the distance of the device from the AOPD, in a
vertical
position, the following formula is used:
S = K*T + C
where:
T = t1 + t2
= AOPD response time + PNOZsigma relay release time (max 80 ms)
t
1
t
= Machine total stopping time.
2
C = 8 * (d – 14) for devices with resolution <= 40 mm
D = resolution
In all cases, if K = 2000mm/sec then S > 500 mm. Distance will have
then to be recalculated using K = 1600 mm/sec.
PSEN op4F-s-14-060/1 PSEN op4H-s-30-060/1
C
S
0 mm 128 mm
641.6 mm 758.4 mm
WARNING: The reference standard is EN 999 “Machine safety - the
positioning of the protective device based on the approaching speed of
the human body”.
The following information is to be considered as indicative and
concise. For correct safety distance please refer to complete
standard EN-999.
1.4. Typical applications
The PSEN op4F/H-s FINGER safety light curtains provide solutions
in all automation fields where the access to dangerous areas has to
be controlled.
In particular, the safety curtains can be used in stopping moving
parts in:
- Automatic machines;
- Packaging and cutting machines;
- Textile, wood-working and ceramic machines;
- Automatic assembling lines;
- Milling, lathe and shearing machines;
- Bending and metal-working machines.”
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Instruction Manual PSEN op4F/H-s Series
Example 1: Operating point protection on drilling machines
The operator positions the part and takes
it back after machining.
The operator must be protected against
possible abrasions while working.
Solution: PSEN op4F/H-s 14 mm safety
light curtain is especially suitable for this
kind of application, which requires the
installation of the device directly on the
machine.
Benefits: The extremely reduced profile
guarantees installation flexibility adapting itself to the machine
dimensions.
The rotating fixing brackets, supplied as accessories, speed up and
facilitate mounting.
Example 2 : Paper cutting machines
These machines typically cut paper to
a specific size for newspapers or
special applications. The operator must
be protected against abrasion or cuts
by cutter blades.
Solution: PSEN op4F/H-s 30 mm
safety light curtain is especially
suitable for this kind of application,
which require the installation of the
device directly on the machine.
Benefits: Highly reduced profile and the two side slots ensure installation
flexibility for machine dimensions.
Advantages: The extremely reduced profile guarantees installation
flexibility adapting itself to the machine dimensions.
The rotating fixing brackets, supplied as accessories, speed up and
facilitate mounting.
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PSEN op4F/H-s Series Instruction Manual
Example 3 : Milling machines
A milling machine is a machine tool used for the shaping of metals and
other solid materials. Operator hands and body must be protected from
being dragged, entangled or cut by the tool / spindle.
Solution:
solution considering the required safety levels and application type. When
even just one of the light curtain beams is interrupted, the machine is
immediately stopped.
Benefits: The extremely reduced profile guarantees installation flexibility
adapting itself to the machine dimensions.
The rotating fixing brackets, supplied as accessories, speed up and
facilitate mounting.
PSEN op4F/H-s 30 mm series safety light curtain is the best
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Instruction Manual PSEN op4F/H-s Series
1.5. Safety information
For a correct and safe use of the safety light curtains of the
PSEN op4F/H-s series, the following points must be observed:
• The stopping system of the machine must be electrically controlled.
• This control system must be able to stop the dangerous movement
of the machine within the total machine stopping time T as per
paragraph 1.3.3, and during all working cycle phases.
• Mounting and connection of the safety light curtain must be carried
out by qualified personnel only, according to the indications
included in the special sections (refer to sections 2; 3; 4; 5) and in
the applicable standards.
• The safety light curtain must be securely placed in a particular
position so that access to the dangerous zone is not possible
without the interruption of the beams (refer 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 (optional for the safety light curtains Type 4) button must
be located outside the protected area because the operator must
check the protected area during all Test operation.
• The RESET/RESTART button must be located outside the
protected area because the operator must check the protected area
during all Reset/Restart operations.
Please carefully read the instructions for the correct functioning
before powering the light curtain.
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PSEN op4F/H-s Series Instruction Manual
2. INSTALLATION MODE
2.1. Precautions to be observed for the choice and installation
Make sure that the protection level assured by the PSEN op4F/H-s
device (Type 4) is compatible with the real danger level of the
machine to be controlled, according to EN 954-1 and EN 13849-1.
• The outputs (OSSD) of the AOPD must be used as machine
stopping devices and not as command devices. The machine must
have its own START command.
• The dimension of the smallest object to be detected must be larger
than the resolution level of the device.
• The AOPD must be installed in a room complying with the technical
characteristics indicated in section 10 “Technical Data”.
• Do not install device near strong and/or flashing light sources or
close to similar devices.
• The presence of intense electromagnetic disturbances could
jeopardise device functioning. This condition shall be carefully
assessed by seeking the advice of Pilz Technical service.
• The operating distance of the device can be reduced in 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 jeopardise functioning.
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Instruction Manual PSEN op4F/H-s Series
NO
YES
2.2. General information on device positioning
The safety light curtain should be carefully positioned, in order to
reach a very high protection standard. Access to the dangerous area
must only be possible by passing through the protecting safety light
beams.
Fig.5a shows some examples of possible access to the machine
from the top and the bottom sides. These situations may be very
dangerous and so the installation of the safety light curtain at
sufficient height in order to completely cover the access to the
dangerous area (Fig.5b) becomes necessary.
Fig. 5a
Fig. 5b
Under standard operating conditions, machine starting must not be
possible while operators are inside the dangerous area.
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PSEN op4F/H-s Series Instruction Manual
NO
YES
When the installation of the safety light curtain near to the dangerous
area is not possible, a second light curtain must be mounted in a
horizontal position in order to prevent any lateral access, as shown in
Fig.6b.
If the operator is able to enter the dangerous area, an additional
mechanical protection must be mounted to prevent the access.
Fig. 6a
Fig. 6b
2.2.1. Minimum installation distance
Refer to paragraph1.3.3. “Minimum installation distance”
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Instruction Manual PSEN op4F/H-s Series
2.2.2. Minimum distance from reflecting surfaces
Reflecting surfaces placed near the light beams of the safety device
(over, under or laterally) can cause passive reflections. These
reflections can affect the recognition of an object inside the controlled
area.
However, if the RX receiver detects a secondary beam (reflected by
the side-reflecting surface) the object might not be detected, even if
the object interrupts the main beam.
Fig. 7
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PSEN op4F/H-s Series Instruction Manual
AOPD
Type 4
It is thus important to position the safety light curtain according to the
minimum distance from reflecting surfaces.
The minimum distance depends on:
• operating distance between emitter (TX) and receiver (RX);
• real aperture angle of AOPD (EAA); especially:
for AOPD type 4 EAA = 5° (α = ± 2,5°)
Diagram of Fig. 8 shows the minimum distance from the reflecting
surface (Dsr), based on the operating distance:
Fig. 8
The formula to get Dsr is the following:
Dsr (m) = 0.15 for oper.distance < di 3 m
Dsr (m) = 0.5 x operating distance (m) x tg 2α for oper.distance ≥ di 3 m
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Instruction Manual PSEN op4F/H-s Series
2.2.3. Distance between homologous devices
If different safety devices have to be installed in adjacent areas, the
emitter of one device must not interfere dangerously with the receiver
of the other device.
The TX
Ddo distance from the TX
interfering device must be positioned outside a minimum
B
– RXA emitter-receiver couple axis.
A
This minimum Ddo distance depends on:
• the operating distance between emitter (TX
) and receiver (RXA)
A
• the effective aperture angle of the AOPD (EAA)
The following graphic shows the distance from the interfering devices
) according to the operating distance (Dop) of the couple ( TXA –
(D
do
).
RX
A
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PSEN op4F/H-s Series Instruction Manual
Operating distance
(m)
Minimum installation
distance (m)
3
0,30
6
0,50
10
0,65
19
0,80
The following table shows, for convenience, the values of the
minimum installation distances relative to some operating distances:
WARNING: the interfering device (TXB) must be positioned at the
same Ddo distance, calculated as shown above, even if closer to
respect to RXA.
TX
A
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Instruction Manual PSEN op4F/H-s Series
NO
YES
YES
RX
TX
Installation precautions have to be taken to avoid interference
between homologous devices. A typical situation is represented by
the installation areas of several adjacent safety devices aligned one
next to the other, for example in plants with different machines.
Fig.9 provides two examples:
Fig. 9
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PSEN op4F/H-s Series Instruction Manual
NO NO
2.2.4. Emitter and receiver orientation
The two units shall be assembled parallel each other, with the beams
arranged at right angles with the emission and receiving surface, and
with the connectors orientated towards the same direction.
The configurations shown in Fig.10 must be avoided:
Fig. 10
20
2.2.5. Use of deviating mirrors
The control of any dangerous area, with several but adjacent access
sides, is possible using only one safety device and well-positioned
deviating mirrors.
Fig.11 shows a possible solution to control three different access
sides, using two mirrors placed at 45° respect to the beams.
Fig. 11
Instruction Manual PSEN op4F/H-s Series
The operator must respect the following precautions when using the
deviating mirrors:
• The alignment of the emitter and the receiver can be a very critical
operation when deviating mirrors are used. Even very small
displacements of the mirror is enough to lose alignment. The use of
Pilz laser pointer accessory is recommended under these
conditions.
• The minimum safety distance (S) must be respected for each single
section of the beams.
• Use of a deviating mirror reduces the effective operating range by
about 15%. This percentage increases further when using two or
three deviating mirrors.
In the table below the operating ranges are indicated, based on the number
of the mirrors used.
Number of
Operating range Operating range
mirrors
Without mirror 6 m 19 m
1 5.1 m 16.5 m
2 4.3 m 13.7 m
3 3.7 m 11.6 m
• The presence of dust or dirt on the reflecting surface of the mirror
causes a drastic reduction in the range.
2.2.6. Controls after first installation
The control operations to carry-out after the first installation and
before machine start-up are listed hereinafter. The controls must be
carried-out by qualified personnel, either directly or under the strict
supervision of the person in charge of machinery Safety.
Verify that:
AOPD remains blocked (
) intercepting the beams along the
protected area using the specific test piece, following the Fig.12
scheme.
TP14 for light curtains with 14 mm resolution: PSEN op4F-s-14
TP30 for light curtains with 30 mm resolution: PSEN op4H-s-30
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PSEN op4F/H-s Series Instruction Manual
Fig. 12
• AOPD has to be correctly aligned, press slightly on the product side
in both directions the red LED must not turn on
• The activation of the TEST function (optional for the safety light
curtains Type 4) causes the opening of the OSSD outputs (red LED
on and controlled machine stop).
• The response time at machine STOP, including the AOPD and
machine response times, must be included in the limits defined in
the calculation of the safety distance (refer to section 2 “Installation
modes”).
• The safety distance between the dangerous parts and AOPD must
comply with the requirements indicated in section 2 “Installation
modes”.
• A person must not access or remain between AOPD and the
dangerous parts of the machine.
• Access to the dangerous areas of the machine must not be
possible from any unprotected area.
• AOPD must not be disturbed by external light sources, ensuring
that it remains in Normal operating function for at least 10-15
minutes and placing the specific test piece in the protected area in
the SAFE condition for the same period.
• Verify the correspondence of all the accessory functions, activating
them in the different operating conditions.
.
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Instruction Manual PSEN op4F/H-s Series
3. MECHANICAL MOUNTING
The emitting (TX) and receiving (RX) units must be installed with the
relevant sensitive surfaces facing each other. The connectors must be
positioned on the same side and the distance must be included within
the operating range of the model used (see section 10 “Technical
data”).
The two units must be positioned the most aligned and parallel
possible.
The next step is the fine alignment, as shown in section 5 “Alignment
Procedure”.
Two types of brackets can be used to fix the two units:
Rotating brackets
Rotating fixing brackets are supplied with all models (Fig.13).
They can be used separately from or together with the angled fixing
brackets.
Fig. 13
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PSEN op4F/H-s Series Instruction Manual
Angled fixing brackets
Angled fixing brackets (Fig.14), available upon request, can be used
as an alternative or together with rotating brackets.
The rotating supports for the correction of the unit inclination are
available on request (see chapter 14 “Accessories”).
Fig. 14
In case of applications with particularly strong vibrations, vibration
dampers together with mounting brackets are recommended to reduce
the impact of the vibrations.
Fig. 15
The recommended mounting positions according to the light curtain
length are shown in Fig.15 and in the following table.
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Instruction Manual PSEN op4F/H-s Series
MODEL
L (mm)
A (mm)
B (mm)
C (mm)
PSEN op4F/H-s-XX-015/1 216.3 108 54 -
PSEN op4F/H-s-XX-030/1 366.2 216 75 -
PSEN op4F/H-s-XX-045/1 516.3 316 100 -
PSEN op4F/H-s-XX-060/1 666.2 366 150 -
PSEN op4F/H-s-XX-075/1 816.3 466 175 -
PSEN op4F/H-s-XX-090/1 966.2 566 200 -
PSEN op4F/H-s-XX-105/1 1116.2 666 225 -
PSEN op4F/H-s-XX-120/1 1266.3 966 150 483
PSEN op4F/H-s-XX-135/1 1416.2 1066 175 533
PSEN op4F/H-s-XX-150/1 1566.3 1166 200 583
PSEN op4F/H-s-XX-165/1 1716.3 1266 225 633
PSEN op4F/H-s-XX-180/1 1866.3 1366 250 683
xx = Resolution (14 mm – 30 mm)
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PSEN op4F/H-s Series Instruction Manual
EDM SELECTION
2
8 1 5
3
4
7
6
+24 VDC
0 V
OSSD1
OSSD2
RESET / RESTART
MAN/AUTO
+24 VDC
N.O.
EDM
+24 VDC
N.C.
external contact
3
4
2
1
TEST
0 V
+24 VDC
NOT USED
+24 VDC
N.O.
4. ELECTRICAL CONNECTIONS
All electrical connections to the emitting and receiving units are made
through a male M12 connector, located on the lower part of the two
units. For receiver a M12 8-pole connector is used, while for emitter a
M12 4-pole connector is used.
RECEIVER (RX) *):
1 = white = RESET / RESTART(*)
2 = brown = +24 VDC
3 = green = EDM SELECTION
4 = yellow = EDM
5 = grey = OSSD 1
6 = pink = OSSD 2
7 = blue = 0 V
8 = red = MANUAL / AUTOMATIC RESTART
(*) automatic RESTART RESET function
manual RESTART RESET / RESTART function
EMITTER (TX) *):
1 = brown = +24 VDC
2 = white = TEST
3 = blue = 0 V
4 = black = NOT USED
*) plugs an pinning compatible to PSEN op4F/H series.
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Instruction Manual PSEN op4F/H-s Series
Function
Connection to
Status
Normally closed
guided relay
+ 24 VDC TEST ON
TEST
Not connected
or 0V
TEST OFF
+ 24 VDC RESET ON
RESET
Not connected
or 0V
RESET OFF
EDM
EDM SELECTION
MAN/AUTO RESTART
contact for a force-
Not connected
or 0V
EDM is active
EDM is not active
+ 24 VDC EDM OFF
Not connected
or 0V
OSSD1
OSSD2
AUTOMATIC
RESTART
RESTART
EDM ON
MANUAL
27
PSEN op4F/H-s Series Instruction Manual
4.1. Notes on connections
For the correct functioning of the PSEN op4F/H-s safety light
curtains, the following precautions regarding the electrical
connections have to be respected:
• Do not place connection cables in contact with or near high-voltage
cables and/or cable undergoing high current variations (e.g. motor
power supplies, inverters, etc.);
• Do not connect in the same multi-pole cable the OSSD wires of
different light curtains;
• The TEST wire must be connected through a N.O. button to the
supply voltage of the AOPD. The TEST function is optional for the
safety light curtains Type 4.
• The RESET/RESTART wire must be connected through a N.O.
button to the supply voltage of the AOPD.
The TEST button must be located in such a way that the operator
can check the protected area during any test (see section 6
“Functioning mode”).
The RESET/RESTART button must be located in such a way that the
operator can check the protected area during any reset operation
(see section 6 “Functioning mode”).
• The device is already equipped with internal overvoltage and
overcurrent suppression devices. The use of other external
components is not recommended.
28
Instruction Manual PSEN op4F/H-s Series
You may use for example a safety relay of the PNOZsigma (PNOZ
s4, PNOZ s5) range as an evaluation device.
The wiring is described in the operating manual of the PNOZsigma
unit.
• Do not use varistors, RC circuits or LEDs in parallel at relay inputs
or in series at OSSD outputs.
• The OSSD1 and OSSD2 safety contacts cannot be connected in
series or in parallel, but can be used separately (Fig.17),
conforming to the plant’s safety requirements.
If one of these configurations is erroneously used, the device enters
into the output failure condition (see section 7 “Diagnostic functions”).
29
PSEN op4F/H-s Series Instruction Manual
115 usec
500 msec
1000 msec
OSSD during “safe” behaviour
OSSD2
OSSD1
24Vdc
GND
24Vdc
GND
YES
NO
NO
NO
OSSD test behaviour
• Connect both OSSDs to the activating device. Failure to connect an
OSSD to the activating device jeopardises the system safety
degree that the light curtain has to control.
Fig. 17 Fig. 18
Fig. 19 Fig. 20
30
during normal operation
Instruction Manual PSEN op4F/H-s Series
4.2. Ground connection
PSEN op4F/H-s safety light curtain units are preset for easy ground
connection. A special compartment, positioned onto caps and
marked with the special symbol shown in Figure 21, allows
connection with ground cable by means of an additional screw
coming with the equipment.
Fig. 21
Ground connection configuration is the most common and
guarantees the best immunity against electromagnetic disturbances.
PSEN op4F/H-s can function even without ground connection.
This condition has to be carefully evaluated according to the EMC
disturbance immunity and necessary insulation class considering the
plant or entire system where the light curtain is installed.
31
PSEN op4F/H-s Series Instruction Manual
Electrical protections
Class I
Class III
Ground Connection
Compulsory
Forbidden
• The ground connection of the two units is not necessary for Class
III, while the use of a duly-insulated low-voltage feeder type SELV
or PELV is compulsory. In this case, we recommend covering the
earth symbol present on the caps of the two units with a blank
sticker.
• The ground connection of the two units is compulsory for Class I,
while the use of a duly-insulated feeder type SELV or PELV is not
compulsory but anyway recommended.
The following table is a summary of PSEN op4F/H-s electrical
protections.
Ground connection symbol Compulsory Forbidden
Power supply by generators
SELV / PELV
Recommended Compulsory
32
Instruction Manual PSEN op4F/H-s Series
Receiver
Emitter
last optic (LAST)
first optic = synchronisation optics (SYNC)
LAST
SYNC
NORMAL
OP.
SAFE(BREAK)
NORMAL
OP.
ON
5. ALIGNMENT PROCEDURE
The alignment between the emitting and the receiving units is
necessary to obtain the correct functioning of the light curtain.
A good alignment prevents outputs instability caused by dust or
vibrations.
The alignment is perfect if the optical axes of the first and the last
emitting unit's beams coincide with the optical axes of the
corresponding elements of the receiving unit.
The beam used to synchronise the two units is the closest one to the
connector. SYNC is the optics connected with this beam and LAST is
the optics connected to the last beam after the SYNC unit.
33
Fig. 22
Signals are clearly identified through symbols allowing their immediate
reading, independent of bars directions; a short description of LEDs
signals proves nevertheless necessary so as to avoid
misunderstandings.
Fig. 22
PSEN op4F/H-s Series Instruction Manual
LED
OP.
LED
(BREAK)
LED
SYNC
LED
LAST
Last NOK
Middle optics NOK
Each beam is over
0 and 25%
Each beam is over
25 and 50%
Each beam is over
50 and 75%
Each beam is over
75 and 100%
The standard installation described hereinafter is the one shown in
Fig. 22, i.e. with the bar assembled with the connectors pointing
down.
5.1. Correct alignment procedure
The light curtain alignment can be effected only after having
completed the mechanical installation and the electrical connections
as described above. Compare alignment results with those given in
the following table.
NOTE: To enter alignment mode connect the device as described in
section 6.5 “Alignment aid function”.
Display
NORMAL
SAFE
yellow
yellow
Condition
Alignment
status
ON
ON
OFF ON
ON OFF OFF OFF
ON OFF OFF OFF
ON OFF OFF OFF
ON OFF OFF OFF
OFF
OFF OFF
Sync NOK
Last NOK
Sync OK
Sync OK
Last NOK
the min. operating
threshold and the
number of beam over
the threshold is
included between
the min. operating
threshold and the
number of beam over
the threshold is
included between
the min. operating
threshold and the
number of beam over
the threshold is
included between
the min. operating
threshold and the
number of beam over
the threshold is
included between
Not
aligned
MINIMUM
align.
MAXIMUM
align.
34
Instruction Manual PSEN op4F/H-s Series
A Keep the receiver in a steady position and set the emitter until
the yellow LED (
alignment of the first synchronisation beam.
B Rotate the emitter, pivoting on the lower optics axis, until the
yellow LED (
NOTE: Ensure that the green LED ( NORMAL OP) is steady
ON.
C Delimit the area in which the green LED (
through some micro adjustments - for the first and then for the
second unit - so to have the maximum alignment (4) and then
place both units in the centre of this area.
D Fix the two units firmly using brackets.
• Verify that the green LED (
beams are not interrupted, then verify that the red LED SAFE
(BREAK)
interrupted (condition where an object has been detected ).
• This verification shall be made with the special cylindrical
“Test Piece” having a size suitable to the resolution of the
device used (refer paragraph 2.2.6 ”Controls after first
installation”).
E Switch OFF and ON the device in normal operating mode.
The alignment level is monitored also during device standard
operating mode via display (see paragraph 7.2).
Once the curtain has been aligned and correctly fastened, the
display signal is useful both to check the alignment and show a
change in the environmental conditions (occurrence of dust,
light disturbance and so on) via signal level monitoring.
SYNC) is OFF. This condition shows the
LAST) is OFF.
) is steady
) on the RX unit is ON and
turns ON if even one single beam is
35
PSEN op4F/H-s Series Instruction Manual
6. FUNCTIONING MODE
6.1. Restart mode
The interruption of a beam due to an opaque object causes the
opening of OSSD outputs and the stop of the safety light curtain,
SAFE (BREAK) condition
AOPD standard operation can be reset (OSSD safety contact
closing = NORMAL OP. condition,
Automatic Restart, After activation, AOPD resets to standard
•
operating condition once the object has been removed from the
controlled area.
Manual Restart, After activation, AOPD resets to standard
•
operating condition only once the reset function has been enabled
and provided that the object has been removed from the controlled
area. This condition, called interlock, is signalled on the display
(see paragraph 7.2)
WARNING: Carefully assess risk conditions and restart modes.
In applications protecting access to dangerous areas, the automatic
restart mode is potentially unsafe if it allows the operator to pass
completely beyond the sensitive area. In this case, the manual restart
or, for example, the manual restart of the Pilz safety relay (paragraph
4.1 "Notes on connections") is necessary.
Time chart (Manual Restart)
.
) in two different ways:
36
Instruction Manual PSEN op4F/H-s Series
Select either automatic or manual restart by connecting pin of RX
connector (see section 4 "Electrical connections")
6.2. Test function
The TEST function is optional for the safety light curtains Type 4 and
not necessary. The TEST function can be activated by keeping a
normally open external contact (TEST push-button), closed for at
least 0.5 seconds.
The TEST signal is active high.
6.3. Reset function
The RX light curtain has a RESET function which is activated after an
internal error. It can be reset only in case of optical error, OSSD or
EDM error or selection of manual/automatic reset (see section 7
“Diagnostic functions”).
The RESET function can be activated by keeping a normally open
external contact (RESET/RESTART push-button), closed for at least
5 seconds. The RESET signal is active high.
37
PSEN op4F/H-s Series Instruction Manual
6.4. EDM function
The light curtain has a function for monitoring
actuation external devices (EDM). This function
can be enabled or deactivated.
EDM enabled:
- Disconnect or connect to the ground pin 3 of
receiver M12 8-pole connector (EDM enabling
= ON).
- Connect EDM input (pin 4 of M12 8-pole –
RX) to a 24 VDC normally closed contacts of
the device to be monitored.
NOTE: The decimal dot on the display shows that the function is
enabled.
EDM deactivated:
- Connect to 24 VDC pin 3 of receiver M12 8-pole connector (EDM
enabling = OFF).
- Disconnect or connect to the ground EDM input (pin 4 of M12 8-
pole - RX).
This function checks normally closed contact switch on OSSD status
change.
≥ 350 msec: 350 msec: time after OSSD OFF-ON switch when
T
C
EDM test is performed.
≥ 100 msec: time after OSSD ON-OFF switch when EDM test is
T
0
performed.
38
Instruction Manual PSEN op4F/H-s Series
OFF
ON
RESET
STATO DELLA BARRIERA
0Vdc
24Vdc
0.5 s
ON
OFF
STATO DELLA BARRIERA ( ALLINEAMENTO )
LIGHT CURTAIN STATUS
LIGHT CURTAIN STATUS ( ALIGNMENT
6.5. Alignment aid function
PSEN op4F/H-s light curtain is fitted with a system which informs the
user about reached alignment degree. The alignment function can be
selected on device starting by keeping closed RESET/RESTART
N.O. contact for at least 0.5 seconds (Fig.24).
Alignment mode timing
39
Fig. 24
Once optimal alignment has been reached, the device can return to
normal functioning by powering off and then powering on the RX unit.
The alignment level is monitored also during device normal operating
mode via display (see paragraph 7.2). Once the curtain has been
aligned and correctly fastened, the display signal is useful to check
the alignment and view any change in the environmental conditions
(presence of dust, light disturbance and so on).
NOTE: OSSDs are not enabled on alignment mode.
PSEN op4F/H-s Series Instruction Manual
LED OFF
LED BLINKING
LED ON
7. DIAGNOSTIC FUNCTIONS
7.1. User interface
Curtain operating status is visualised through an one-digit display
present on both the receiver and emitter units.
PSEN op4F/H-s also has four LEDs on the receiver and two LEDs on
the emitter.
Fig.25 shows all LEDs signalling modes: OFF, ON and BLINKING.
Fig. 25
40
Instruction Manual PSEN op4F/H-s Series
7.2. Dagnostic messages
The operator can evaluate the main causes of the system stop or
failure through the display and signalling LEDs.
For Receiver:
Function Status Meaning LED DIGIT
Alignment See section 5
Normal
operation
TEST
(red ON)
Emission
(OSSD ON)
(green ON)
Interruption
(OSSD OFF)
(red ON)
Interlock
Beams free
(red ON
yellow ON)
Interlock
Beams
interrupted
(red ON
yellow ON)
Signal level
EDM enabled
Light curtain being
tested. OSSD status
shall be OFF
Light curtain working in
normal operating
conditions
Light curtain working in
safety block conditions.
Light curtain in
interlock, waiting for
restart. OSSD status
must be OFF
Light curtain in
interlock. OSSD status
must be OFF
Minimum (1 bar)
Medium (2 bar)
Maximum (3 bar)
EDM function is
selected
41
PSEN op4F/H-s Series Instruction Manual
Function Type Check and repair LED DIGIT
Error status
OSSD error
(red ON)
Internal error
(red ON)
Optical error
(red ON)
EDM error
(red ON)
Restart selection
error
(red ON)
No power supply
(LEDs OFF)
Check OSSD
connections. Make
sure that they are not
in contact with one
another or with the
supply cables, then
Reset. If the failure
continues contact Pilz
Switch OFF and switch
ON the power supply
circuit. If the failure
continues contact Pilz
Reset. If the failure
continues contact Pilz
Check EDM
connections and lines.
If the failure continues
contact Pilz
Check the man/auto
restart connection. If
the failure continues
contact Pilz
Check connections
and input voltage
value. If the failure
continues contact Pilz
42
Instruction Manual PSEN op4F/H-s Series
For Emitter:
Function Status Meaning LED DIGIT
TEST
(green ON)
Normal
operation
Function Type Check and repair LED DIGIT
Error status
Emission
(green ON
yellow ON)
Internal error
(green ON)
Optical error
(green ON)
No power
supply
(LEDs OFF)
Light curtain being tested.
OSSD status on the
receiver must be OFF
Light curtain in normal
operating condition
Switch OFF and switch
ON the power supply
circuit. If the failure
continues contact Pilz
Switch OFF and switch
ON the power supply
circuit. If the failure
continues contact Pilz
Check connections and
input voltage correct
value. If the failure
continues contact Pilz
43
PSEN op4F/H-s Series Instruction Manual
8. PERIODICAL CHECKS
The following is a list of recommended check and maintenance
operations that should be periodically carried-out by qualified
personnel (Paragraph 2.2.6 “Controls after first installation”)
Check that:
• The AOPD stays locked (
entire protected area, using the suitable “Test Piece” (*)
• The AOPD is correctly aligned. Press slightly product side, in both
directions and the red LED (
• Enabling the TEST function, the OSSD outputs should open (the
red LED
is ON and the controlled machine stops). The TEST
function is optional for the safety light curtains Type 4.
• The response time upon machine STOP (including response time
of the AOPD and of the machine) is within the limits defined for the
calculation of the safety distance (see section 2 “Installation
mode”).
• The safety distance between the dangerous areas and the AOPD
are in accordance with the instructions included in section 2
“Installation mode”.
• Access of a person between AOPD and machine dangerous parts
is not possible nor is it possible for him/her to stay there.
• Access to the dangerous area of the machine from any unprotected
area is not possible.
• The AOPD and the external electrical connections are not
damaged.
The frequency of checks depends on the particular application and
on the operating conditions of the safety light curtain.
(*) according to the Fig.12 scheme
Verify that:
AOPD remains blocked (
protected area using the specific test piece, following the Fig.12
scheme.
TP14 for light curtains with 14 mm resolution: PSEN op4F-s-14
TP30 for light curtains with 30 mm resolution: PSEN op4H-s-30
) during beam interruption along the
) must not turn ON.
) intercepting the beams along the
44
Instruction Manual PSEN op4F/H-s Series
8.1. General information and useful data
Safety MUST be a part of our conscience.
The safety devices fulfil their safety function only if they are correctly
installed, in accordance with the Standards in force.
If you are not certain to have the expertise necessary to install the
device in the correct way, Pilz Technical Support is at your disposal
to carry out the installation.
The device uses fuses that are not self-resetting. Consequently, in
presence of short-circuits causing the cut-off of these fuses, both
units shall be sent to Pilz Technical Support department.
A power failure caused by interferences may cause the temporary
opening of the outputs, but the safe functioning of the light curtain will
not be compromised.
45
PSEN op4F/H-s Series Instruction Manual
9. DEVICE MAINTENANCE
PSEN op4F/H-s safety light curtains do not require special
maintenance operations.
To avoid the reduction of the operating distance, optic protective front
surfaces must be cleaned at regular intervals.
Use soft cotton cloths damped in water.
Do not apply too much pressure on the surface in order to avoid
making it opaque.
Please do not use on plastic surfaces or on light curtain painted
surfaces:
• alcohol or solvents
• wool or synthetic cloths
• paper or other abrasive materials
9.1. Product disposal
Under current Italian and European laws, Pilz is not obliged to take
care of product disposal at the end of its life.
Pilz recommends to dispose of the product in compliance with local
laws or contact authorised waste collection centres.
46
Instruction Manual PSEN op4F/H-s Series
ELECTRICAL DATA
Power supply (Vdd):
24 Vdc ± ±20%
Consumption (TX):
2.5 W max
Consumption (RX):
3.5 W max (without load)
Outputs:
2 PNP
Short-circuit protection:
1.4 A max
Output current:
0.5 A max / each output
Output voltage – status ON:
Vdd –1 V min
Output voltage – status OFF:
0.2 V max
Capacitive load
2.2 uF @ 24Vdc max
Response times:
See table below
Controlled height:
150..1800 mm
Safety category:
Type 4
Auxiliary functions:
Test; manual/automatic restart; EDM;
RESET
Electrical protection:
Class I / Class III (see paragraph 4.2)
Connections:
M12 4-pole for emitter
M12 8-pole for receiver
Cable length (for power supply):
50 m. max
OPTICAL DATA
Light emission ( λ ):
Infrared, LED (950 nm)
Resolution:
14 - 30 mm
Operating distance:
0.2…19 m for 30 mm
0.2…6 m for 14 mm
Ambient light rejection:
IEC-61496-2
MECHANICAL AND ENVIRONMENTAL DATA
Operating temperature:
0…+ 55 °C
Storage temperature:
- 25…+ 70 °C
Temperature class:
T6
Humidity:
15…95 % (no condensation)
Mechanical protection:
IP 65 (EN 60529)
Vibrations:
Width 0.35 mm, Frequency 10 … 55 Hz
(EN 60068-2-6)
Shock resistance:
16 ms (10 G) 1,000 shocks per axis
(EN 60068-2-29)
Housing material:
Painted aluminium (yellow RAL 1003)
Front glass material:
PMMA
Cap material:
PC MAKROLON
Weight:
1.3 kg / meter for each single unit
10. TECHNICAL DATA
47
20 sweep per axis, 1 octave/min
PSEN op4F/H-s Series Instruction Manual
Controlled
(mm)
Response
(msec)
Resolution
(mm)
11. LIST OF AVAILABLE MODELS
Model
PSEN op4F-s-14-015/1 150 16 11 14
PSEN op4F-s-14-030/1 300 32 15 14
PSEN op4F-s-14-045/1 450 48 18 14
PSEN op4F-s-14-060/1 600 64 22 14
PSEN op4F-s-14-075/1 750 80 25 14
PSEN op4F-s-14-090/1 900 96 29 14
PSEN op4F-s-14-105/1 1050 112 33 14
PSEN op4F-s-14-120/1 1200 128 36 14
PSEN op4F-s-14-135/1 1350 144 40 14
PSEN op4F-s-14-150/1 1500 160 43 14
PSEN op4F-s-14-165/1 1650 176 47 14
PSEN op4F-s-14-180/1 1800 192 50 14
PSEN op4H-s-30-015/1 150 8 9 30
PSEN op4H-s-30-030/1 300 16 11 30
PSEN op4H-s-30-045/1 450 24 13 30
PSEN op4H-s-30-060/1 600 32 14 30
PSEN op4H-s-30-075/1 750 40 16 30
PSEN op4H-s-30-090/1 900 48 18 30
PSEN op4H-s-30-105/1 1050 56 19 30
PSEN op4H-s-30-120/1 1200 64 21 30
PSEN op4H-s-30-135/1 1350 72 23 30
PSEN op4H-s-30-150/1 1500 80 25 30
PSEN op4H-s-30-165/1 1650 88 26 30
PSEN op4H-s-30-180/1 1800 96 28 30
height
No.
Beams
time
48
Instruction Manual PSEN op4F/H-s Series
MODEL
L1
L2
12. OVERALL DIMENSIONS
PSEN op4F/H-s-XX-015/1
PSEN op4F/H-s-XX-030/1
PSEN op4F/H-s-XX-045/1
PSEN op4F/H-s-XX-060/1
PSEN op4F/H-s-XX-075/1
PSEN op4F/H-s-XX-090/1
PSEN op4F/H-s-XX-105/1
PSEN op4F/H-s-XX-120/1
PSEN op4F/H-s-XX-135/1
PSEN op4F/H-s-XX-150/1
PSEN op4F/H-s-XX-165/1
PSEN op4F/H-s-XX-180/1
xx = Resolution (14 mm – 30 mm)
233.3 153.3
383.2 303.2
533.2 453.3
683.2 603.2
833.2 753.3
983.2 903.2
1133.2 1053.2
1283.3 1203.3
1433.2 1353.2
1583.3 1503.3
1733.3 1653.3
1883.3 1803.3
49
PSEN op4F/H-s Series Instruction Manual
13. OUTFIT
Rotating fixing bracket
MODEL DESCRIPTION
PSEN op bracket turnable (kit) (630772) Rotating fixing bracket (kit 4pz.)
50
Instruction Manual PSEN op4F/H-s Series
14. ACCESSORIES
Angled fixing bracket
51
PSEN op4F/H-s Series Instruction Manual
MOUNTING A
MOUNTING B
Angled fixing bracket
Angled fixing bracket + Adjustable support
Angled fixing bracket + Antivibration support
Angled fixing bracket + Adjustable support + Antivibration support
MODEL
DESCRIPTION
14.1 Angled fixing bracket mounting
PSEN op bracket kit (630325) Fixing brackets for angle mounting
PSEN op bracket kit anti vibration (630327) Antivibration support (4 pcs kit)
PSEN op bracket kit adjustable (630326) Adjustable support (4 pcs Kit)
(4 pcs kit)
52
Instruction Manual PSEN op4F/H-s Series
MODEL
L
L
L
PSEN op Mirror-060/1
545
376
580
PSEN op Mirror-090/1
845
676
880
PSEN op Mirror-120/1
1145
976
1180
PSEN op Mirror-165/1
1595
1426
1630
PSEN op Mirror-190/1
1845
1676
1880
Deviating mirrors
(mm)
1
(mm)
2
(mm)
3
53
PSEN op4F/H-s Series Instruction Manual
L (mm)
PSEN op Protective
Column-060/1
PSEN op Protective
Column-090/1
PSEN op Protective
Column-120/1
PSEN op Protective
Column-165/1
PSEN op Protective
Column-190/1
Column and floor stands
54
MODEL DESCRIPTION
Protective Stand H=600 mm
Protective Stand H=900 mm
Protective Stand H=1200 mm
Protective Stand H=1650 mm
Protective Stand H=1900 mm
Order no.
600 630950
900 63951
1200 630952
1650 630953
1900 630954
Instruction Manual PSEN op4F/H-s Series
MODELL
Description
Cable lengthe
Test Piece
MODEL DESCRIPTION
Testpiece F 14mm (630345) test rod Ø 14 mm
Testpiece H 30mm (630346) test rod Ø 30 mm
Connection cables
PSEN op cable axial
M12 4-p. shield.
PSEN op cable angle
M12 4-p. shield
PSEN op cable axial
M12 8-p. shield.
PSEN op cable angle
M12 8-p. shield.
Cabel shielded, M12, 4
pole, axial
Cabel shielded, M12, 4
pole, angle
Cabel shielded, M12, 8
pole, axial
Cabel shielded, M12, 8
pole, angle
3 m (630303)
5 m 630304)
10 m (630305)
30 m (630309)
3 m (630306)
5 m 630307)
10 m (630308)
30 m (6303219)
3 m (630313)
5 m 630314)
10 m (630315)
30 m (630328)
3 m (630316)
5 m 630317)
10 m (630318)
30 m (630329)
DESCRIPTION
55
PSEN op4F/H-s Series Instruction Manual
15. GLOSSARY
ACTIVE OPTOELECTRONIC PROTECTIVE DEVICE (AOPD): its
detection function is achieved thanks to the use of optoelectronic
receivers and emitters detecting the optical beams interruptions inside
the device caused by an opaque object present inside the specified
detecting area.
An active optoelectronic protective device (AOPD) can operate both in
emitter-receiver mode and in retro-reflective light curtains.
BLOCK CONDITION (=BREAK): status of the light curtain taking
place when a suitably-sized opaque object (see DETECTING
CAPACITY) interrupts one or several light curtain beams.
Under these conditions, OSSD1 and OSS2 light curtain outputs are
simultaneously switched OFF within the device response time.
CONTROLLED MACHINE: machine having the potentially-dangerous
points protected by the light curtain or by another safety system.
CROSSING HAZARD: situation under which an operator crossing the
area controlled by the safety device and this latter stops and keeps the
machine stopped until the hazard is eliminated, and then enters the
dangerous area. Now the safety device could not be able to prevent or
avoid an unexpected restart of the machine with the operator still
present inside the dangerous area.
DANGEROUS AREA: area representing an immediate or imminent
physical hazard for the operator working inside it or who could get in
contact with it.
DETECTING CAPACITY (= RESOLUTION): sensor function
parameter limit as specified by the manufacturer, which activates the
electrosensitive protection equipment (ESPE). In case of an active
optoelectronic protective device (AOPD), with resolution we mean the
minimum dimension, which an opaque object must have in order to
interrupt at least one of the beams that constitute the sensitive area.
EDM: see “External device monitoring) in the glossary.
ELECTROSENSITIVE PROTECTIVE EQUIPMENT (ESPE): assembly
of devices and/or components working together to activate the
protective disabling function or to detect the presence of something
and including at least: a sensor, command/control devices and output
signal switching devices.
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Instruction Manual PSEN op4F/H-s Series
EMITTER: unit emitting infrared beams, consisting of a set of opticallysynchronised LEDs. The emitting unit, combined with the receiving unit
(installed in the opposite position), generates an optical “curtain”, i.e.
the detecting area.
EXTERNAL DEVICE MONITORING (EDM): device used by the AOPD
to monitor the status of the external command devices.
FINAL SWITCHING DEVICE (FSD): part of the control system
involving machine safety conditions. It breaks the circuit to the
machine primary control element (MPCE) when the output signal
switching device (OSSD) becomes inactive.
FORCE-GUIDED CONTACTS: Contacts can be guided forcibly when
they are connected mechanically so that they can switch
simultaneously, when the input stage is active.
If one contact of the series remains “hanged”, no other relay contact is
able to move.
This function allows the control of the EDM status.
MACHINE OPERATOR: qualified person allowed to use the machine.
MACHINE PRIMARY CONTROL ELEMENT (MPCE): electrically-
powered element having the direct control of machine regular
operation so as to be the last element, in order of time, to operate
when the machine has to be enabled or blocked.
MIN. INSTALLATION DISTANCE: min. distance necessary to allow
machine dangerous moving parts to completely stop before the
operator can reach the nearest dangerous point. This distance shall be
measured from the middle point of the detecting area to the nearest
dangerous point. Factors affecting min. installation distance value are
machine stop time, total safety system response time and light curtain
resolution.
N.O.: normally opened
N.C.: normally closed
OFF STATUS: status when the output circuit is interrupted and does
not allow current stream.
ON STATUS: status when the output circuit is operational and allows
current stream.
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PSEN op4F/H-s Series Instruction Manual
OUTPUT SIGNAL SWITCHING DEVICE (OSSD): part of the ESPE
connected to machine control system. When the sensor is enabled
during standard operating conditions, it switches to disabled status.
PROTECTED AREA: area where a specified test object is detected by
the ESPE.
PROTECTIVE DEVICE: device having the function to protect the
operator against possible risks of injury due to the contact with
machine potentially-dangerous parts.
QUALIFIED OPERATOR: a person who holds a professional training
certificate or having a wide knowledge and experience and who is
acknowledged as qualified to install and/or use the product and to
carry out periodical test procedures.
RECEIVER: unit receiving infrared beams, consisting of a set of
optically-synchronised phototransistors. The receiving unit, combined
with the emitting unit (installed in the opposite position), generates an
optical “curtain”, i.e. the detecting area.
RESPONSE TIME: max. time elapsing between the occurrence of the
event leading to sensor activation and the reaching of the inactive
state by the output signal switching device (OSSD).
RESTART INTERLOCKING DEVICE (=RESTART): device preventing
machine automatic restart after sensor activation during a dangerous
phase of machine operating cycle, after a change of machine
operating mode, and after a variation in machine start control devices.
RISK: probability of occurrence of an injury and severity of the injury
itself.
SAFETY LIGHT CURTAIN: it is an active optoelectronic protective
device (AOPD) including an integrated system consisting of one or
several emitting elements and one or several receiving elements
forming a detection area with a detecting capacity specified by the
supplier.
START INTERLOCKING DEVICE (= START): device preventing
machine automatic start if the ESPE is live or the voltage is disabled
and enabled once again.
TEST PIECE: opaque object having a suitable size and used to test
safety light curtain correct operation.
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Instruction Manual PSEN op4F/H-s Series
TYPE (OF ESPE): the Electrosensitive Protective Equipment (ESPE)
have different reactions in case of faults or under different
environmental conditions. The classification and definition of the "type"
(ex. type 2, type 4, according to IEC 61496-1) defines the minimum
requirements needed for ESPE design, manufacturing and testing.
WORKING POINT: machine position where the material or
semifinished product is worked.
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