Pepperl+Fuchs SLCT Series User manual

AOPD
3AA2
SLCT* and SLCT*/35
Safety Light Curtains
FACTORY AUTOMATION
ORIGINAL INSTRUCTIONS

With regard to the supply of products, the current issue of the following document is applicable: The
General Terms of Delivery for Products and Services of the Electrical ndustry, published by the
Central Association of the Electrical ndustry (Zentralverband Elektrotechnik und Elektroindustrie
(ZVE ) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation
of proprietorship"
SLCT* and SLCT*/35 safety light curtains

SLCT* and SLCT*/35 safety light curtains
Contents
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Introduction......................................................................... 5
. Content of this Document .............................................................................5
.2 Symbols Used...............................................................................................5
2 Safety information .............................................................. 7
3 Product Description ........................................................... 9
3. Use and Application......................................................................................9
3.2 ndicators and Operating Controls ..............................................................11
3.3 nterfaces and Connections ........................................................................11
3.4 Scope of Delivery........................................................................................13
4 Installation......................................................................... 4
4. Planning and Preparation............................................................................14
4.2 Mounting.....................................................................................................18
4.3 Reflection....................................................................................................21
4.4 Connection and Operating Mode Setting ....................................................22
4.4. Signal Outputs on the Receiver Unit.......................................................23
4.4.2 Signal nputs on the Transmitter Unit ......................................................24
4.4.3 Signal nputs on the Receiver Unit..........................................................25
4.4.4 Typical Circuits .......................................................................................27
5 Commissioning................................................................. 28
5. Functional Testing .......................................................................................28
5.2 Multiple Positions ........................................................................................29
6 Maintenance and Repair .................................................. 3
6. Maintenance ...............................................................................................31
6.2 Periodic Checks ..........................................................................................31
6.3 Repairs .......................................................................................................32
7 Troubleshooting................................................................ 33
7. Troubleshooting ..........................................................................................33
8 Appendix ........................................................................... 35
8. Technical Data ............................................................................................35
8. . Standards and Data for Functional Safety...............................................38
8.2 Profile Lengths and Mass............................................................................39
8.3 Dimensional Drawing ..................................................................................41
8.4 Type Code...................................................................................................41
8.5 Application Checklist...................................................................................47
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SLCT* and SLCT*/35 safety light curtains
Contents
8.6 Accessories................................................................................................ 49
8.6. Mounting Aid OMH-SLCT-01 ................................................................. 55
8.6.2 Mounting Aid OMH-SLCT-02 ................................................................. 55
8.6.3 Mounting Brackets OMH-SLCT-03 and OMH-SLCT-04 ......................... 56
8.6.4 Mounting Aid OMH-SLCT-05 ................................................................ 56
8.6.5 OMH-SLCT-12 -500 Muting Arm with Round Rod.................................. 56
8.6.6 OMH-07-01 Mounting Bracket for Circular Profiles ................................ 56
8.6.7 OMH-SLCT-100-xxxx Mounting Profile for Floor Mounting .................... 57
8.6.8 OMH-SLCT-110-xxxx Mounting Profile with Decorative Cover (Front) ... 57
8.6.9 OMH-SLCT-120-xxx Lateral Protective Covers for Mounting Profile ...... 57
8.6. 0 OMH-SLCT-200 Floor Mount for Soil Column/Mounting Profile ............. 57
8.6. SLCT-M-01-xxxx nclined Mirror for 90° Deflection ................................ 58
8.6. 2 Alignment Aid ........................................................................................ 58
8.6. 3 Test Rod ................................................................................................ 59
8.6. 4 Connection Cables ................................................................................ 60

SLCT* and SLCT*/35 safety light curtains
ntroduction
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1 ntroduction
1.1 Content of this Document
This document contains safety-relevant information for usage of the device. You
need this information to use your product throughout the applicable stages of the
product life cycle. These can include the following:
■ Product identification
■ Delivery, transport, and storage
■ Mounting and installation
■ Commissioning and operation
■ Maintenance and repair
■ Troubleshooting
■ Dismounting
■ Disposal
The documentation consists of the following parts:
■ Original instructions (present document)
■ EU declaration of conformity
■ Datasheet
For more information about Pepperl+Fuchs products with functional safety, see
www.pepperl-fuchs.com/sil.
1.2 Symbols Used
This document contains symbols for the identification of warning messages and of
informative messages.
Warning Messages
You will find warning messages, whenever dangers may arise from your actions. t
is mandatory that you observe these warning messages for your personal safety
and in order to avoid property damage.
Depending on the risk level, the warning messages are displayed in descending
order as follows:
Note!
For full information on the product, refer to the further documentation on the
nternet at www.pepperl-fuchs.com.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
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SLCT* and SLCT*/35 safety light curtains
ntroduction
Informative Symbols
Action
This symbol indicates a paragraph with instructions. You are prompted to perform
an action or a sequence of actions.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and
plants, or result in their complete failure.
Note!
This symbol brings important information to your attention.

SLCT* and SLCT*/35 safety light curtains
Safety information
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2 Safety information
Read the following information carefully and follow this information when working
with the device. Failure to observe the safety information and warning messages
in this documentation can lead to malfunctions of the safety devices of the
machines or plants in which they are fitted.
This can result in serious personal injury or death.
Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation, maintenance,
and dismounting lies with the plant operator.
The personnel must be appropriately trained and qualified in order to carry out
mounting, installation, commissioning, operation, maintenance, and dismounting
of the device. The trained and qualified personnel must have read and
understood the instruction manual.
Prior to using the product make yourself familiar with it. Read the instruction
manual carefully.
Reference to Further Documentation
Observe laws, standards, and directives applicable to the intended use and the
operating location.
f you use the device in safety-related applications, observe the requirements for
functional safety. You can find these requirements in the functional safety
documentation under www.pepperl-fuchs.com.
Intended Use
The device is only approved for appropriate and intended use. gnoring these
instructions will void any warranty and absolve the manufacturer from any liability.
f you use the device in safety-related applications, observe the information for
safety function and safe state.
The safety light curtain may only be used in accordance with its intended purpose
as noncontact electro-sensitive protective equipment (ESPE) for securing
sources of danger and hazardous areas on machines and plants.
Ensure that this device is used only in accordance with the technical specification
described in these instructions. The device must not be used outdoors or in an
explosion-hazardous area.
Plant design
Before selecting and using the product, an assessment must be made to
determine whether this product is suitable for the intended application.
Pepperl+Fuchs has no influence on the selection and use of this product. The
warranty therefore only covers the consistent quality of the product.
Mounting and installation
f you install the device in safety-related applications, observe the requirements for
functional safety.
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SLCT* and SLCT*/35 safety light curtains
Safety information
Operation, maintenance, repair
f you are operating the device in applications related to safety, note the
requirements for functional safety.
Do not remove the nameplate.
Do not remove the warning markings.
Record the results of inspections and maintenance carefully.
Do not repair, modify, or manipulate the device.
f there is a defect, always replace the device with an original device.
Only use accessories specified by the manufacturer.
Delivery, Transport, Disposal
Keep the original packaging. Always store and transport the device in the original
packaging.
Disposing of device, packaging, and possibly contained batteries must be in
compliance with the applicable laws and guidelines of the respective country.

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Product Description
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3 Product Description
3.1 Use and Application
Product description
The SLCS safety light curtain is noncontact electro-sensitive protective equipment
(ESPE) for securing danger zones and hazardous areas.
The SLCT safety light curtain consists of a transmitter unit and receiver unit. The
protection field is formed by infrared light beams sent from the transmitter unit to
the receiver unit. The offset between the individual light beams determines the
minimum obstacle size (14 mm, 30 mm, 60 mm, or 90 mm) that can be reliably
detected in the entire protection field range.
The transmitter unit contains a certain number of transmitter diodes that emit
protective beams. The number of transmitter diodes is determined by the
protection field height and the size of the obstacle. The function mode A/B
enables the use of 2 adjacent safety light curtains.
The receiver unit detects the transmission beams, controls the two OSSD (Output
Signal Switching Devices) safety outputs and carries out tests to ensure safety.
n addition to the displays behind the front panel of the receiver unit, there is also a
PNP output, which indicates operational readiness, a dirty lens, or fault states. f
an internal fault occurs in the receiver unit, this output switches on and off at a
frequency of 5 Hz. f an external fault occurs, this output switches on and off at a
frequency of 1 Hz. f the received signal is too weak (e.g., due to a dirty lens), the
output switches on and off at a frequency of 2.5 Hz.
The test input on the transmitter unit initiates a test sequence. Activate the input by
applying 24 VDC to the input for a defined time span.
The relay monitor (RM) and restart (R ) inputs allow monitoring of the switching
elements connected externally to the OSSDs and activation of the startup/restart
interlock function.
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SLCT* and SLCT*/35 safety light curtains
Product Description
Figure 3.1 Schematic diagram of a detection device
Product features
■ Type 4 ESPE in accordance with EC/EN 61496-1
■ Self-testing
■ Obstacle size, depending on type, 14 mm, 30 mm, 60 mm, 90 mm
■ Protection field heights up to 1200 mm (SCLT14)
■ Protection field heights up to 2400 mm (SLCT30, SLCT60, SLTS90)
■ Protection field grids 100 mm (SLCT14, SLCT30)
■ Protection field grids 300 mm (SLCT60, SLCT90)
■ Selectable startup/restart interlock
■ Selectable relay monitor
■ Simple layout
■ Two OSSDs
Further information about the product
The following information about the SLCT series is provided in the appendix at the
end of this document:
Technical data: .
Available profile lengths/dimensions: see chapter 8.2.
Dimensional drawings: see chapter 8.3.
Product characteristics by type code: see chapter 8.4.
Available accessories: see chapter 8.6.
Transmitter unit
24 V supply 24 V supply
OSSDs
Status / Select RI-RM
Restart Interlock (RI)
Relay Monitor (RM)
Beam Code A/B
Protection
Receiver unit
Test
Beam Code A/B

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Product Description
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3.2 ndicators and Operating Controls
The transmitter has two LEDs to display its operating status.
The receiver has five LEDs to display its operating status.
Figure 3.2 Displays on the transmitter and receiver units
3.3 nterfaces and Connections
The electrical connections of the safety light curtain are made using M12 plug-in
connectors. The transmitter has a 4-pin connector and the receiver an 8-pin plug-
in connector.
Connect the power supply and, depending on the application, the test signal to
the transmitter unit. The mode can also be selected via the A/B mode input.
No. Designation LED Color Meaning
1 Power LED Green Transmitter and receiver units operating
2 A/B mode,
status Yellow ndicator flashing at 1 Hz: testing time exceeded
or A/B mode input level change
ndicator flashing at 5 Hz: internal fault
3 OSSD OFF Red OSSDs switched off
4 OSSD ON Green OSSDs switched on
5 Restart/status Yellow On: protection field free: system ready to
start
ndicator flashing at 1 Hz: external fault
ndicator flashing at 2.5 Hz: insufficient
functional reserve
ndicator flashing at 5 Hz: internal fault
6 Mode A/B Yellow Off: mode A
On: mode B
1 Power green
2 Mode A/B, Status yellow
3 OSSD OFF red
4 OSSD ON green
5 Restart/Status yellow
6 Mode A/B yellow
Transmitter Receiver
1
2
3
5
4
6
1

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SLCT* and SLCT*/35 safety light curtains
Product Description
Connect the power supply, the fail-safe outputs (OSSD), the status/select output
and the inputs for the startup enable, relay monitor and A/B mode to the receiver
unit.
The housing profile is connected internally with approx. 2.3 MOhm// 33 nF each at
+24 V and 0 V. nternal varistors limit any surges that occur at approx. 85 V. A
separate grounding or connection between the housing and functional ground is
not required.
Transmitter
Figure 3.3 Pin assignment transmitter unit
Receiver
Figure 3.4 Pin assignment receiver unit
24 V DC
2Mode A/B
30 V DC
4Test
Restart nterlock (R )
224 V DC
3Relaismonitor (RM)
4Status / Select R -RM
5OSSD 1
6OSSD 2
70 V DC
8Mode A/B
1
3
4
2
1
4
6
7
8
53
2
0 V
24 V
OSSD 1/2

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Product Description
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3.4 Scope of Delivery
The scope of delivery includes:
Scope of delivery: transmitter
■ Transmitter
Scope of delivery: receiver
■ Receiver
■ /O Manual
■ Test rod
Bracket and cable are not included in the scope of delivery. Visit www.pepperl-
fuchs.com for a selection of compatible fixing brackets and recommended cables.

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SLCT* and SLCT*/35 safety light curtains
nstallation
4 nstallation
4.1 Planning and Preparation
Safety distance
A minimum distance must be maintained between the protection field and the
danger zone to ensure potentially dangerous movements are brought to a stop
before contact with a person is possible.
Figure 4.1 Minimum distance between protection field and hazardous area
This distance is calculated from the lag time of the machine, the response time of
the safety system, and the speed of movement of the person entering the
hazardous area ( SO/EN 13855).
Warning!
Danger to life due to ineffective protective equipment
mproper or incorrect alignment, fixing, and connection to machine control can
impair the effectiveness of the protective function.
■ Note the applicable standards, guidelines, and legal regulations for the
equipment of machine and plants with protective equipment.
■ Position the protective equipment to prevent persons from being able to
reach or walk behind it, climb over or under, or otherwise bypass the
equipment in any way.
■ Use appropriate safety distances to take into account the response times
and lag times of the components in the safety chain.
■ Secure the protective equipment against manipulation or deliberate
deactivation.
Danger zone
Minimum interval S
Sending unit
Protective field
Receiving unit
SLCT* and SLCT*/35 safety light curtains

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nstallation
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To comply with the necessary distances in the event that the protection field
spreads, please refer to Table 1 of SO/EN 13855 to check the minimum distance
for a vertically positioned protection field. f you read the value 0 from the table,
you can determine the minimum distance with the following formula:
S = K x T + C
Where, for a protection field aligned vertically to the hazardous area:
S Minimum safety distance in mm,
i.e. the distance between hazardous area and protection field
K Constant in mm/s for the speed of approach, based on the detection
capacity of the sensor
T Total response time of the protective equipment in s (T = t
1
+t
2
)
t
1
Response time of the protective equipment See the table below.
t
2
Machine lag time
C Additional distance in mm, see table
Number of
beams/res
olution
14 mm 30 mm 60 mm 90 mm
0 mm 128 mm 850 mm 850 mm
For any arrangements other than a vertical alignment of the protection field, see also
EN SO 13855.

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SLCT* and SLCT*/35 safety light curtains
nstallation
Response times of the safety light curtain
The safety light curtain response time is shown on the nameplate.
Protection field height [mm] Response time [ms]
SLCT14-* SLCT30-* SLCT30-*/35 SLCT60-* SLCT60-*/35 SLCT90-* SLCT90-*/35
100 11 8 9 - - - -
200 15 10 11 - - - -
300 19 11 12 9 10 8 8
400 23 12 14 - - - -
500 26 14 16 - - - -
600 30 15 17 11 12 10 10
700 34 16 19 - - - -
800 38 17 21 - - - -
900 42 19 23 13 15 11 11
1000 46 20 25 - - - -
1100 50 21 26 - - - -
1200 54 23 28 15 17 12 12
1300 - 24 30 - - - -
1400 - 25 32 - - - -
1500 - 26 33 17 20 14 14
1600 - 28 35 - - - -
1700 - 29 37 - - - -
1800 - 30 38 19 23 15 15
1900 - 32 40 - - - -
2000 - 33 42 - - - -
2100 - 34 43 21 25 16 16
2200 - 35 45 - - - -
2300 - 37 47 - - - -
2400 - 38 48 23 28 17 17

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nstallation
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The switch-on time after beam interruption without a restart function is between
80 ms and 200 ms. The switch-on time depends on the number of protective
beams.
Notes on setting up safety light curtains
The protective equipment must be arranged in such a manner that it is impossible
to reach over, reach under, or walk behind the protection field. f the distance from
the protective equipment is too great, additional protective equipment must be put
in place (see illustration below).
Reaching over
The operator must not be able to reach over the protection field and into the
hazardous area (A: protection field, B: mechanical protection).
Walking behind
The machine operator must not be able to walk between the light curtain and into
the danger zone (A: protection field, B: mechanical protection).

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SLCT* and SLCT*/35 safety light curtains
nstallation
4.2 Mounting
Various mounting materials for mounting to machines or in the field are available
for securing the safety light curtain. See chapter 8.6.
f you are planning to install a safety light curtain with an increased detection
range, we recommend using mounting profiles for floor mounting from our
accessories range. See chapter 8.6.7.
Mounting
1. Align the transmitter and receiver units so that the two units are parallel with
one another and at the same height.
2. Align the transmitter and receiver units parallel with one another.
3. The stability alarm indicator helps with correct alignment.
When installing the safety light curtain in a hazardous area, a minimum distance
must be maintained between the protection field and the hazardous area. This
distance will ensure that movements that pose a danger to a person can be
brought to a stop before that person comes into contact with the source of danger.
The distance is calculated from the lag time of the machine, the response time of
the safety light curtain, and the speed of movement of the person entering the
hazardous area (EN SO 13855, EN SO 13857).
Warning!
Danger to life due to ineffective protective equipment
mproper or incorrect alignment, fixing, and connection to machine control can
impair the effectiveness of the protective function.
■ Check the positioning of the protective equipment and ensure that it is not
possible for persons to reach or walk behind it, climb over, under or
otherwise bypass the protective equipment.
■ Check the safety distances and the lag times of the components in the
safety chain.
■ Check that the protective equipment cannot be easily manipulated or
disabled.

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nstallation
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Vertical approach
Figure 4.2 Explanation of the safety distance in a vertical arrangement of the protective
field
Where K = 2000 mm/s and C = 0 mm, e.g., for SLCT14...
or C = 128 mm, e.g., for SLCT30...
the calculation formula for a distance S of 105 mm up to and including 500 mm is:
S = 2000 mm/s * (t1 + t2) + C
S = 1600 mm/s * (t1 + t2) + C
S must be at least 500 mm. Lower results must be corrected to a minimum
distance of 500 mm.
Example: vertical arrangement
t1 = 50 ms
t2 = 300 ms
Hand protection C = 128 mm
S = 2000 mm/s * (350 * 10-3 s) + 128 mm
S = 700 mm + 128 mm = 828 mm
As S is > 500 mm, a smaller value can also be determined:
S = 1600 mm/s * (350 * 10-3 s) + 128 mm = 688 mm
The minimum distance between protection field and danger zone must therefore
be 688 mm. betragen.
Distance S
Protective field
Danger
zone
Note!
f S is greater than 500 mm, then K = 1600 mm/s must be used for calculations:

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SLCT* and SLCT*/35 safety light curtains
nstallation
Parallel approach
Figure 4.3 Explanation of the safety distance in a horizontal arrangement of the
protective field
f the safety light curtain is aligned in a horizontal position, the safety distance S
will also depend on the height of the light curtain above the floor. The maximum
height H must not exceed 1000 mm.
The safety distance is calculated as follows:
S = 1600 mm/s * (t1 + t2) + (1200 mm - 0.4 H)
Therefore (1200 mm - 0.4 H) ≥ 850 mm is required.
Distance S
H (height above ground)
Protective field
Danger
zone
Danger!
Risk of death due to possibility to bypass the protective function
f H is greater than 300 mm, there is a risk that access underneath the safety light
curtain will be possible.
Where height H is greater than 300 mm, the possibility of access must be factored
into the risk analysis or additional barriers must be used.