schmersal SLC 210 Programming manual

SLC 210 / SLG 210
PHOTOELECTRIC
SAFETY
BARRIER
SLC 210 / SLG 210
MOUNTING AND WIRING INSTRUCTIONS
TABLE OF CONTENTS
INTRODUCTION........................................................................................................................2
OPERATION..............................................................................................................................3
INSTALLATION..........................................................................................................................4
POSITIONING......................................................................................................................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

SLC 210 / SLG 210
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 210 / SLG 210 photoelectric barrier is an optoelectronic safety system. It belongs to
the family of Type 2 electrosensitive devices according to EN 954-1.
The SLC 210 / SLG 210 barrier, which consists of an Emitter and a Receiver, is a type 2
optoelectronic safety device according to standards IEC 61496-1 and IEC 61496-2.
SLC 210 / SLG 210 is available in two different families of models depending on the
maximum working range : 6 m (standard model) and 16 m (models witch the extension “–L”).
The two safe semiconductor outputs enable the barrier to be connected to the SCR 1R
safety modules, to a safety PLC or to another control system that satisfies the specific
requirements and safety level of the application.
SLC 210 / SLG 210 is ideal for protecting:
Machinery for product handling such as conveyors, palletizing, collating machines;
packaging and wrapping devices; automated assembly lines; automated warehousing.
+If necessary, contact the competent safety authorities in the country of use for any
safety-related problems 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.

SLC 210 / SLG 210
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.
+The resolution is the minimum dimensions that an object must have to 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 210 / SLG 210 is available with the following resolutions:
– 20 mm (protected height from 160 mm to 1800 mm)
PROTECTION OF FINGERS
– 40 mm (protected height from 310 mm to 1800 mm)
PROTECTION OF HANDS
– 90 mm (protected height from 460 mm to 1800 mm)
PROTECTION OF BODY
SLG 210 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

SLC 210 / SLG 210
4
INSTALLATION
Before installing the SLC 210 / SLG 210 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 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

SLC 210 / SLG 210
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.
POSITIONING
The position of the Emitter and the 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

SLC 210 / SLG 210
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

SLC 210 / SLG 210
7
VERTICAL POSITION OF THE BARRIER
20 mm resolution models
+These models are suitable for the protection of
fingers.
S = K (t1+ t2+ t3) + C and S >100 mm
40 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,
t
he 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
90 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

SLC 210 / SLG 210
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 recommended height Hfrom the base
(G) must be the following:
Figure 6
MODEL BEAMS Recommended Height H (mm)
SLG 210-E/R0500-02-12(-H)
SLG 210-E/R0800-03-12(-H)
SLG 210-E/R0900-04-12(-H)
2
3
4
400 –900
300 –700 –1100
300 –600 –900 -1200
HORIZONTAL POSITION OF THE BARRIER
When the object’s directi
on of approach is parallel to
the floor of the protected area, the barrier must be
installed so that the distance 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 –0.4 H (but > 850 mm)
where H is the height of the protected surface from
the base of the machine;
H = 15 (D -50) (D = resolution)
In this case, Hmust 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

SLC 210 / SLG 210
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 24 VDC ± 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 to 20 msec).

SLC 210 / SLG 210
10
Connector pins
Figure 8
EMITTER
NUMBER NAME MEANING
124 VDC Power supply (positive)
2 TEST -Operation without TEST (+24 VDC)
-TEST control (Transition +24 VDC -> 0 VDC
or open circuit)
30 VDC Power supply (negative)
4N.C. N.C.
5PE Ground connection
Table 1
+If the TEST function is not required by the application, connect pin 2 of the emitter
to +24 VDC.
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 2
EMITTER RECEIVER

SLC 210 / SLG 210
11
Example of connection of the SLC 210 / SLG 210
barrier to the SCR 1R safety module
Figure 9
Instructions for 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

SLC 210 / SLG 210
12
MULTIPLESYSTEMS
When more than one SLC 210 / SLG 210 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 11 illustrates some examples of correct positioning when two photoelectric systems
are installed. Incorrect positioning could generate interference, and may result in
malfunctioning.
Figure 10
Whenever it is possible (depending on the application), we suggest to utilize the models with
a working range of 6 m.
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 12, 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 ±4°.
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

SLC 210 / SLG 210
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 close to the Emitter and Receiver.

SLC 210 / SLG 210
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 every 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.

SLC 210 / SLG 210
15
MECHANICAL ASSEMBLY AND OPTIC ALIGNMENT
The Emitter and the Receiver must be assembled opposite each other. Use the fastening
brackets and inserts supplied 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.

SLC 210 / SLG 210
16
OPERATION AND TECHNICAL DATA
SIGNALS
LED COLOUR STATUS MEANING
1Yellow On
2Red On System activated. Initial TEST
1Yellow On
3Green On TEST condition
3Green On Normal operation
Emitter
2Red On Malfunction
LED COLOUR STATUS MEANING
4Yellow On
5Red On
6Red On System activated
7Green On Protected area clear
5Red On Protected area engaged
4Yellow On Weak signal received
4Yellow Blinking Detection of hazardous interfering
emitter condition
6Red On Overcurrent on one or both outputs (OSSD)
6Red Blinking Erroneous connection of
semiconductor outputs (OSSD)
4Yellow
Receiver
6Red Blinking Internal fail detected
NOTE: For a more detailed description of the signalings in case of FAIL, please refer to the
“TROUBLESHOOTING” paragraph in this manual (page 22).
Figure 15
èOn the emitter of the multibeam models, near each beam is a red LED which
permits an easy detection of the beam.
EMITTER RECEIVER

SLC 210 / SLG 210
17
TEST FUNCTION
+The SLC 210 / SLG 210 barrier system does not dispose of a start/restart interlock
circuit. In most applications this safety function is necessary. The safety module
SCR 1R permits to implement this function in a safe way according to IEC 61496-1.
Please consider the risk-analysis of your application about this matter.
The SLC 210 / SLG 210 barrier system features an automatic self-diagnosis function that
enables it to detect response time malfunctions (in an execution time less than 500 msec).
This safety system is permanently active and does not require any interventions from the
outside.
The TEST function is available (bringing the voltage on the pin 2of the emitter to 0 VDC)
should the user wish to check equipment connected downstream of the barrier (without
physically entering the protected area).
By means of the test function, which simulates occupation of the protected area, it is
possible to verify the operation of the entire system by means of an external supervisor (e.g.
PLC, control module, etc.).
The minimum duration of the TEST function must be 80 msec.
By means of this function the OSSDs can be switched from ON to OFF as long as the
function remains active.
OUTPUTS STATUS
The SLC 210 / SLG 210 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
48 Ω. 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 0 VDC (Figure 16).
Figure 16

SLC 210 / SLG 210
18
TECHNICALSPECIFICATIONS
TECHNICAL SPECIFICATIONS OF SLC 210 / SLG 210 BARRIERS
Protected height mm 160 –1810
Resolutions mm 20 –40– 90
standard 0 –6
Working range m
extension -H1 -16
Safety outputs 2 PNP –500mA @24VDC
Response time msec (see tables)
Internal test
execution time msec 500
Powersupply VDC 24 ±20%
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 210-E/Rxxxx-20-12(-H)
Resolution 20 mm 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 msec
78,5 10,5 12,5 14,5 16,5 18 20 22 24 26 28
Overall barrier height mm 261 411 561 711 861 1011
1161 1311 1461 1611 1761 1911
SLC 210 E/Rxxxx-40-12(-H)
Resolution 40 mm 0310
0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
Number of beams 10 15 20 25 30 35 40 45 50 55 60
Response time msec 677,5 88,5 9,5 10 10,5 11 12 12,5
Overall barrier height mm 411 561 711 861 1011
1161 1311 1461 1611 1761 1911
SLC 210-E/Rxxxx-90-12(-H)
Resolution 90 mm 0460 0610 0760 0910 1060 1210 1360 1510 1660 1810
Number of beams 7911 13 15 17 19 21 23 25
Response time 6666,5 7777,5 88
Overall barrier height mm 561 711 861 1011 1161 1311 1461 1611 1761 1911
SLG 210-E/Rxxxx-xx-12(-H)
Multibeam Models 0500-02 0800-03 0900-04
Number of beams 234
Distance between beams mm 500 400 300
Response time msec 666
Overall barrier height mm 711 1011 1111

SLC 210 / SLG 210
19
DIMENSIONS (in mm)
Figure 17
Emitter and Receiver
SLC 210E/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 1663 1810
C85
Mounting 2 mounting kits 3 mounting kits
Figure 18
Mounting kit (inserts and fastening brackets) -included
R3.25
RECEIVER EMITTER
C
SLG 210E/Rxxxx-xx-12 0500-02
0800-03 0900-04
A701 1001 1101
B610 910 1010
C135

SLC 210 / SLG 210
20
Figure 19
Fastening brackets for deviation
mirrors
Figure 20
Deviation mirrors
inserts M8
Type H
SMB 250250
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