schmersal SLC 410 Programming manual

SLC 410 / SLG 410
PHOTOELECTRIC
SAFETY
BARRIER
SLC 410 / SLG 410
MOUNTING AND WIRING INSTRUCTIONS
TABLE OF CONTENTS
INTRODUCTION........................................................................................................................2
OPERATION...............................................................................................................................3
INSTALLATION..........................................................................................................................4
POSITION...........................................................................................................................5
SAFETY DISTANCE CALCULATION....................................................................................6
VERTICAL POSITION OF THE BARRIER.............................................................................7
HORIZONTAL POSITION OF THE BARRIER........................................................................8
ELECTRICAL CONNECTIONS.............................................................................................9
MULTIPLE SYSTEMS........................................................................................................ 12
DISTANCE BETWEEN REFLECTING SURFACES ............................................................. 12
USE OF DEFLECTION MIRRORS...................................................................................... 14
MECHANICAL ASSEMBLY AND OPTIC ALIGNMENT......................................................... 15
OPERATION AND TECHNICAL DATA...................................................................................16
SIGNALS .......................................................................................................................... 16
TEST FUNCTION.............................................................................................................. 17
OUTPUTS STATUS ........................................................................................................... 17
TECHNICAL SPECIFICATIONS ......................................................................................... 18
DIMENSIONS ..........................................................................................................................19
CHECKS AND MAINTENANCE...............................................................................................21
TROUBLESHOOTING ....................................................................................................... 22
SPARE PARTS.........................................................................................................................23

2
+This symbol indicates a very important warning concerning the safety of persons. Its
non-observance can cause a very serious risk for the exposed personnel.
INTRODUCTION
The SLC 410 / SLG 410 photoelectric barrier is a optoelectronic safety system. It belongs to
the family of Type 4according to EN 954-1. The SLC 410 / SLG 410 barrier, which consists
of an Emitter and a Receiver, is a type 4 optoelectronic safety device according to standards
EN 61496-1 and EN 61496-2.
The two safe static semiconductor outputs enable the barrier to be connected to safety
modules or to a safety PLC or to another control system that satisfies the specific
requirements and safety level of the application.
A diagnostics display on the Emitter and receiver supplies the information that is necessary
for the correct use of the device and to evaluate any malfunctions.
SLC 410 / SLG 410 is ideal for protecting:
Presses, die cutting machines, punching machines, cutting and shearing machines,
robotized areas, assembly lines, palletization lines, etc.
+If necessary, contact the competent safety authorities in the country of use for any
safety-related questions.
+For applications in the food industry, please contact the manufacturer to ensure that
the barrier contains materials that are compatible with the chemical agents utilized.
The protective function of the optoelectronic devices is not effective in the following cases:
+If the machine stopping control cannot be actuated electrically and if it is not
possible to stop all dangerous machine movements immediately and at any time
during the operating cycle.
+If the machine generates dangerous situations due to material being expelled or
falling from overhead.

3
OPERATION
If the protected area is clear, the two outputs on the Receiver are active.
Each time that an object bigger than or equal in size to the resolution of the system
intercepts the optical path of one or more beams, the Receiver deactivates the outputs.
This condition enables hazardous machine movements to be stopped (by means of an
adequate machine emergency stop circuit).
+The resolution is the minimum dimensions that an object must have so that, on
crossing the protected area, it will certainly intercept at least one of the optical
beams generated by the barrier (Figure 1).
Figure 1
The resolution is constant irrespectively of work conditions, as it only depends on the
geometric characteristics of the lenses and the distance between the centres of two adjacent
lenses.
The height of the protected area is the height that is actually protected by the safety
barrier. If the latter is placed horizontally, this value refers to the depth of the protected area.
The working range is the maximum operative distance that can exist between the Emitter
and the Receiver.
SLC 410 / SLG 410 is available with the following resolutions:
– 14 mm (protected height from 150 mm to 1800 mm)
PROTECTION OF FINGERS
– 30 mm (protected height from 150 mm to 1800 mm)
PROTECTION OF HANDS
– 50 mm (protected height from 300 mm to 1800 mm)
PROTECTION OF ARMS AND LEGS
SLG 410 is the Multibeam configuration with the following lens pitch:
– 500 mm (2 beams), 400 mm (3 beams), 300 mm (4 beams).
PROTECTION OF BODY
P = Pitch between two lenses
D = Diameter of one lens
R = Resolution

4
INSTALLATION
Before installing the SLC 410 / SLG 410 safety system, make sure that:
+The safety system is only used as a stopping device and not as a machine control
device.
+The machine control can be actuated electrically.
+All dangerous machine movements can be interrupted immediately. In particular, the
machine stopping times must be known and, if necessary, measured.
+The machine does not generate dangerous situations due to materials projecting or
falling from overhead; if that is not the case, additional mechanical guards must be
installed.
+The minimum dimensions of the object that must be intercepted are greater than or
equal to the resolution of the specific model.
The general instructions set out below must be taken into consideration before placing the
safety device in position.
+Make sure that the temperature of the environment in which the system is to be
installed is compatible with the temperature parameters contained in the technical
data sheet.
+Do not install the Emitter and Receiver close to bright or high-intensity flashing light
sources.
+Certain environmental conditions may affect the monitoring capacity of the
photoelectric devices. In order to assure correct operation of equipment in places
that may be subject to fog, rain, smoke or dust, the appropriate correction factors Cf
should be applied to the maximum working range values. In these cases:
where Pu and Pm are, respectively, the working and maximum range in meters(see
following table).
Pu = Pm x Cf

5
The recommended Cf factors are shown in the table below:
ENVIRONMENTAL CONDITION CORRECTION FACTOR Cf
Fog 0.25
Steam 0.50
Dust 0.50
Dense fumes 0.25
+If the device is installed in places that are subject to sudden changes in temperature,
the appropriate precautions must be taken in order to prevent the formation of
condensation on the lenses, which could have an adverse effect on monitoring.
POSITION
The position of the SLC410E Emitter and the SLC410R Receiver must prevent access to the
danger zone unless at least one of the optical beams has been intercepted. Some useful
information regarding the correct position of the barrier is shown in the figure below.
Incorrect positioning of barrier
Correct positioning of barrier
Figure 2

6
SAFETY DISTANCE CALCULATION
The barrier must be installed at a distance that is greater than or equal to the minimum
safety distance S, so that a dangerous point can only be reached after all hazardous
machine movements have stopped (Figure 3).
According to European standard EN999, the minimum safety distance Smust be calculated
using the following formula:
S = K (t1+ t2+ t3) + C
where:
Symbol Meaning Unit
Sminimum safety distance mm
Kapproach speed of object to the dangerous area mm/sec
t1response time of the safety barrier in seconds sec
t2response time of the safety interface in seconds
(e.g. PLC or safety module*) sec
t3machine response time, in seconds, meaning the time
required for the machine to interrupt the dangerous movement
following transmission of the stop signal sec
cadditional distance mm
* t2SCR 1R <20 msec (refer to the technical manual of each single safety module, if different
from SCR 1R).
+The non-observance of the correct safety distance reduces or cancels the protective
action of the light curtain.
+If the position of the barrier does not prevent the operator from having access to the
dangerous area without being detected, additional mechanical guards must be
installed to complete the system.
“S”=Safety distance Figure 3
HAZARDOUS
MACHINE
S

7
VERTICAL POSITION OF THE BARRIER
14 mm resolution models
+These models are suitable for the protection of
fingers.
S = K (t1+ t2+ t3)+ Cand S >100 mm
30 mm resolution models
+These models are suitable for the protection of
hands.
The minimum safety distance S
is calculated
according to the following formula:
S = K (t1+ t2+ t3) +C
If S ≤500 mm then K = 2000 mm / sec
If S > 500 mm then K = 1600 mm / sec
C = 8(D-14)(D = resolution)
If, due to the specific configuration of the machine,
the dangerous area can be accessed from above,
the highest beam of the barrier must be at a height
Hof at least 1800 mm from the base G
of the
machine. S>150 mm
Figure 4
50 mm resolution models
+These models are suitable for the protection of
arms or legs and must not be used to protect
fingers or hands.
The minimum safety distance S
is calculated
according to the following formula:
S = K * (t1+ t2+ t3) + C
K = 1600 mm / sec
C = 850 mm
èThe height Hof the highest beam from the
base Gmust never be less than 900 mm,
while the height of the lowest beam P
must never be more than 300 mm.
Figure 5
safety barrier
point of
danger
direction
of
approach
reference plane
safety barrier
point of
danger
direction
of
approach
reference plane

8
Multibeam Models.
+These models are suitable for the protection of
the entire body and must not be used to protect
arms or legs.
The minimum safety distance S
is calculated
according to the following formula:
S = K * (t1+ t2+ t3) + C
K = 1600 mm / sec
C = 850 mm
èThe reccomended height Hfrom the base
(G) must be the following:
Figure 6
MODEL BEAMS Reccomended Height H (mm)
SLG 410-E/R0500-02-12
SLG 410-E/R0800-03-12
SLG 410-E/R0900-04-12
2
3
4
400 –900
300 –700 –1100
300 –600 –900 -1200
HORIZONTAL POSITION OF THE BARRIER
When the object’s direction of approach is parallel to
the floor of the protected area, the barrier must be
installed so that the dista
nce between the outer limit
of the dangerous area and the most external optical
beam is greater than or equal to the minimum safety
distance Scalculated as follows:
S = K * (t1+ t2+ t3) + C
K = 1600 mm / sec
C = 1200 –0.4H(but > 850 mm)
where Hi
s the height of the protected surface from
the base of the machine;
H = 15 (D -50)
(D = resolution)
In this case, H
must be greater than 75 mm and
less than 1000 mm.
Figure 7
safety barrier
point of
danger
direction
of approach
reference plane
safety
barrier
point of
danger
direction
of
approach
reference plane

9
ELECTRICALCONNECTIONS
WARNINGS
Before making the electrical connections, make sure that the supply voltage complies with
the one specified in the technical data sheet.
+Emitter and Receiver units must be supplied with PELV type 24VDC ± 20% power
supply (e.g. by means of an insulating transformer according to EN 60724).
The external power supply must comply with EN 60204 (it can bridge short-term
mains failures of up 20 msec).
The electrical connections must be made according to the diagrams in this manual. In
particular, do not connect other devices to the connectors of the Emitter and Receiver.
TEST COMMAND AND RANGE SELECTION
To select the “Low Range” mode, suggested for all installations below 6 m (2 m in case of
14 mm resolution), connect pin 2 to +24 VDC and pin 4 to 0 VDC. In this mode you can give
the test command by bringing pin 2 to 0 VDC too. To select the “High Range” mode, for all
installations above 6 m (2 –5 m in case of 14 mm resolution),connect pin 2 to 0 VDC and pin
4 to +24 VDC.
In this mode you can give the test command by bringing pin 4 to 0 VDC too. Please see table 2.

10
Connector pins
Figure 8
EMITTER
NUMBER NAME MEANING
124 VDC Power supply (positive)
2 (see table 2) SEL RANGE/TEST1 Input 1 for range / TEST selection
30 VDC Power supply (negative)
4 (see table 2) SEL RANGE/TEST2 Input 2 for range / TEST selection
5PE Ground connection
Table 1
RANGE and TEST SELECTION
PIN 2 PIN 4 MEANING
+24 VDC 0 VDC * LOW range (0 –6 m) (0 –2 m for 14 mm models)
0 VDC * +24 VDC HIGH range (1 –18 m) (0 –5 m for 14 mm models)
0 VDC * 0 VDC * EMITTER IN TEST CONDITION
+24 VDC +24 VDC Condition not allowed
* (0 VDC or open circuit)
Table 2
+If the working distance between the Emitter and Receiver is less than 6 m (2 m for
14 mm resolution models), is reccomended to use the low range (selectable on the
Emitter) (table 2).
RECEIVER
NUMBER NAME MEANING
124 VDC Power supply (positive)
2 OSSD1 semiconductor output No. 1 (PNP active high)
30 VDC Power supply (negative)
4 OSSD2 semiconductor output No. 2 (PNP active high)
5PE Ground connection
Table 3
EMITTER
RECEIVER

11
Example of connection of the SLC 410 / SLG 410
barrier to the SCR 1R1 safety module
*Refer to table 2, page 10 for the correct connection of pins 2 and 4
Figure 9
Warnings regarding the connection cables
•For connections over 50 m long, use cables with a cross-section area of 1 mm2.
•Connect the Emitter and the Receiver to the ground outlet.
•The connection cables must follow a different route to that of the other power cables.
Colour code:
BN: brown
WH:
white
BU: blue
BK: black
GY: grey

12
MULTIPLESYSTEMS
When more than one SLC 410 / SLG 410 system is used, precautions must be taken to
avoid optical interference between them: install units so that the beam emitted by the Emitter
of one system can only be received by the relative Receiver.
Figure 10 illustrates some examples of correct positioning when two photoelectric systems
are installed. Incorrect positioning could generate interference, and may result in
malfunctioning.
Figure 10
DISTANCE BETWEEN REFLECTING SURFACES
The presence of reflecting surfaces in proximity of the photoelectric barrier may generate
spurious reflections that prevent monitoring. With reference to Figure 11, object Ais not
detected because surface Sreflects the beam and closes the optical path between the
Emitter and Receiver.
A minimum distance d(distance between A and surface S) must therefore be maintained
between any reflecting surfaces and the protected area. The minimum distance dmust be
calculated according to the distance lbetween the Emitter and the Receiver, considering that
the angle of projection and reception is ±2°.
Figure 11
Systems installed alongside each other: A
Installation of two adjacent Emitters
Overlapping systems: B
L-shaped installation: C
Crossed positioning of Emitters
and receivers

13
Figure 12 illustrates the values for the minimum distance dthat must be maintained when the
distance lbetween the Emitter and Receiver is changed.
Figure 12
After installing the system, check whether any reflecting surfaces intercept the beams, first in
the centre and then in the vicinity of the Emitter and Receiver.
During these operations, the red LED on the Receiver should never, for any reason,
switch off.

14
USE OF DEFLECTION MIRRORS
In order to protect or control areas that can be accessed from more than one side, to the
Emitter and Receiver in addition, one or more deflection mirrors can be installed.
These mirrors enable the optical beams generated by the Emitter to be deviated on one or
more sides.
If the beams emitted by the Emitter must be deviated by 90°, the perpendicular to the
surface of the mirror must form an angle of 45° with the direction of the beams.
The following figure illustrates an application in which two deviation mirrors are used to
provide a U-shaped protection.
Figure 13
The following rules should be taken into consideration when using deviation mirrors:
•Place the mirrors so as to ensure compliance with the minimum safety distance S(Figure 13) on
each side from which the danger zone can be accessed.
•The working distance (range) is given by the sum of the lengths of all the sides that give access to
the protected area. (Remember that for each mirror used the maximum working range between
the Emitter and the Receiver is reduced by 15%).
•During installation, take great care to avoid twisting along the longitudinal axis of the mirror.
•The use of more than three deviation mirrors is not recommended.

15
MECHANICAL ASSEMBLY AND OPTIC ALIGNMENT
The Emitter and the Receiver must be assembled opposite each other. Use the fastening
brackets and insertssupplied with the system to place the Emitter and the Receiver so that
these are aligned and parallel to each other and with the connectors facing the same way.
Perfect alignment of the Emitter and Receiver is essential in order to assure correct barrier
operation. The indicator LEDs on the Emitter and Receiver facilitate this operation.
Figure 14
•Position the optical axis of the first and last beam of the Emitter on the same
axis as that of the corresponding beams on the Receiver.
•Move the Emitter in order to find the area within which the green LED on the
Receiver stays on, then position the first beam of the Emitter (the one close to
the indicator LEDs) in the centre of this area.
•Using this beam as a pivot, effect small sideways movements within the
protected area. The green LED on the Receiver will light up if the protected
area is clear.
•Lock the Emitter and Receiver in place.
During these operations it may be useful to check the yellow weak signal LED on the
Receiver. Upon completion of alignment, this LED must be off.
If the Emitter and the Receiver are assembled in areas that are subject to strong vibrations,
the use of vibration-damping supports is recommended, in order to prevent circuit
malfunctions.

16
OPERATION AND TECHNICAL DATA
SIGNALS
LEDCOLOUR STATUS DISPLAY (4) CONDITION
1Yellow On
2Red On 8System activated. Initial TEST.
1Yellow On
3Green On Off TEST condition
3Green On LNormal operation, low range
3Green On HNormal operation, high range
Emitter
2Red On F + fault code
from 1 to 3 Malfunction *
LED COLOUR STATUS DISPLAY (8) CONDITION
5Yellow On
6Red On 8System activated
6Red On Off Protected area engaged
5Yellow On Off Weak signal received
7Green On Off Protected area clear
Receiver
6Red On F+ fault code
from 0to 6Malfunction *
*N.B.: For the meaning of the number that is displayed in case of a malfunction, please refer to
the “TROUBLESHOOTING” paragraph in this manual.
Figure 15
èOn the emitter of the multibeam models, near each beam, is a red LED which
permits an easy detection of the beam.

17
TEST FUNCTION
+The SLC 410 / SLG 410 barrier system does not dispose of a start/restart interlock
circuit. In most applications this safety function is necessary. The safety moduley
SCR 1R permits to implement this function in a safe way according to IEC 61496-1.
Please consider the risk-analysis of your application for this matter.
By means of the test function, which simulates occupation of the protected area, it possible
to verify the operation of the entire system by means of an external supervisor (e.g. PLC,
control module, etc.).
The SLC 410 / SLG 410 barrier system features an automatic self-diagnosis function that
enables it to detect response time malfunctions (this time is declared for each model).
This safety system is permanently active and does not require any interventions from the
outside. The TEST function is available should the user wish to check equipment connected
downstream of the barrier (without physically entering the protected area).
By means of this function the OSSDs can be switched from ON to OFF as long as the
function remains active. Please see table 2 (page 10) for details about the use of the test
function. The minimum duration of the TEST function must be 80 msec.
OUTPUTS STATUS
The SLC 410 / SLG 410 features two semiconductor outputs on the Receiver, the status of
which depends on the condition of the protected area.
The maximum load allowed is 500 mA at 24 VDC, which corresponds to a resistive load of
48Ω. Maximum load capacity corresponds to 2.2 µF. Any short circuit between outputs or
between outputs and 24 VDC or 0 VDC power supplies is detected by the barrier.
+In the condition “protected area clear”, the Receiver supplies a voltage of 24 VDC on
both outputs. The required load must therefore be connected between the output
terminals and the 0 VDC (Figure 16).
Figure 16

18
TECHNICALSPECIFICATIONS
TECHNICAL SPECIFICATIONS OF SLC 410 / SLG 410 BARRIERS
Protected height mm 160 –1810
Resolutions mm 14 –30–50
0 -2 (low)
Working range (selectable)
14mm models m
0 -5 (high)
0 -6 (low)Working range (selectable)
30, 50, and
Multibeam models m
1 -18 (high)
Safety outputs 2 PNP –500mA @24 VDC
Response time ms 3 -27 (see tables)
Powersupply VDC
24 ±20%, residual ripple 5%
Connections M12 connector, 5-pole
Max. conn. length m100
Operating temp. °C 0 -55 °C
Protection rating IP 65
Dimensionsofsection mm 35 x 45
Max. consumption W2 (Emitter) 3 (Receiver)
SLC 410-E/Rxxxx-14-12
14 mm resolution 0160 0310
0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
Number of beams 15 30 45 60 75 90 105 120 135 150 165 180
Response time 67,5 9,5 11,5 13,5 15,5 17 19 21 23 25 27
Overall barrier height mm 261 411 561 711 861 1011 1161 1311 1461 1611 1761 1911
SLC 410-E/Rxxxx-30-12
30 mm resolution 0160
0310 0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
Number of beams 816 24 32 40 48 56 64 72 80 88 96
Response time 6678910 11 12 13 14 15 16
Overall barrier height mm 261 411 561 711 861 1011 1161 1311 1461 1611 1761 1911
SLC 410-E/Rxxxx-50-12
50 mm resolution 0310
0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
Number of beams 812 16 20 24 28 32 36 40 44 48
Response time 66667788,5 99,5 10
Overall barrier height mm 411 561 711 861 1011 1161 1311 1461 1611 1761 1911
SLG 410-E/Rxxxx-xx-12
Multibeam Models 0500-02 0800-03 0900-04
Number of beams 234
Distance between beams mm 500 400 300
Response time ms 666
Overall barrier height mm 711 1011 1111

19
DIMENSIONS (in mm)
Figure 17
Emitter and Receiver
SLC-410 E/Rxxxx-xx-
12
0160 0310 0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
A251 401 551 701 851 1001
1151 1301 1451 1601 1751 1901
B
(PROTECTED AREA) 160 310 460 610 760 910 1060
1210 1360 1510 1660 1810
C85
Mounting 2 mounting kits 3 mounting kits
Figure 18
Mounting kit (inserts and fastening brackets) included
R3.25
SLG-410-E/Rxxxx-xx-12 0500-02
0800-03 0900-04
A701 1001 1101
B610 910 1010
C135

20
Figure 19
Fastening brackets for deviation
mirrors
Figure 20
Deviation mirrors
inserts M8
Type H
SMB 250 250
SMB 370 370
SMB 540 540
SMB 715 715
SMB 885 885
SMB 1060 1060
SMB 1230 1230
SMB 1400 1400
SMB 1575 1575
SMB 1750 1750
SMB 1900 1900