Original operating instructions

SLSR 8 Protective throughbeam photoelectric sensors

Dimensioned drawing
602066
en 07-2013/02

14m
A2 LS

10 - 30 V
DC 200 Hz

z Protective throughbeam photoelectric

sensor with visible red light, up to
category 2 in accordance with ISO 13849-1
z A²LS - Active Ambient Light Suppression
z Push-pull switching outputs
z M12 turning connector

A Transmitter/receiver
B Optical axis
C Yellow LED
D Turning connector, 90°
We reserve the right to make changes • DS_SLSR_8_en_602066.fm

Electrical connection
IP 67

C UL US
IEC 60947...
LISTED Transmitter Receiver
IEC 60947...

Accessories:
(available separately)
z M12 connectors (KD …)
z Ready-made cables (K-D …)
Connector, 4-pin
z Mounting systems
z Control guard
z Test monitoring units
MSI-TR1 (Part No. 549988)
z Sensorscope SAT 5
(alignment control, Part No. 50109545)

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0 SLSR 8/66.8-S12 - 07
info@leuze.de • www.leuze.com
 SLSR 8

Specifications Tables
0 10 14
Safety-relevant data
Type in accordance with IEC/EN 61496 type 2
Operating range [m]
Performance Level (PL) in accordance with PL d
ISO 13849-1 1) Typ. operating range limit [m]
Category in accordance with ISO 13849 1) cat. 2
Mean time to dangerous failure (MTTFd) 400 years
Service life (TM) 20 years
Optical data
Typ. operating range limit 2) 14m
Operating range 3) 10m
Light source LED (modulated light)
Wavelength 660nm (visible red light)
Timing
Switching frequency 200Hz
Response time 2.5ms
Delay before start-up ≤ 100ms
Electrical data
Operating voltage UB 4) 10 … 30VDC
Residual ripple ≤ 15% of UB
Open-circuit current ≤ 35mA
Switching output/function 2 push-pull switching outputs 5)
pin 2: PNP dark switching, NPN light switching
pin 4: PNP light switching, NPN dark switching
Signal voltage high/low ≥ (UB -2V)/≤ 2V
Output current max. 100mA
Sensitivity not adjustable
Indicators
Transmitter
Yellow LED transmitter active
Receiver
Yellow LED light path free
Yellow LED, flashing light path free, no performance reserve
Mechanical data
Housing metal
Optics cover glass
Weight (plug/cable) 70g/140g
Connection type M12 connector, 5-pin (turning)
Environmental data
Ambient temp. (operation/storage) -20°C … +60°C/-40°C … +70°C
Protective circuit 6) 2, 3
VDE safety class 7) II, all-insulated
Protection class 8) IP 67
LED class 1 (acc. to EN 60825-1)
Standards applied IEC 60947-5-2
Activation input active
Transmitter active/not active ≥ 8V/≤ 2V
Activation/disable delay ≤ 2.4ms/≤ 6.0ms
Input resistance 10KΩ ± 10%
1) In combination with a suitable test monitoring unit, e.g. MSI-TR1
2) Typ. operating range limit: max. attainable range without performance reserve
3) Operating range: recommended range with performance reserve
4) For UL applications: for use in class 2 circuits only
5) The push-pull switching outputs must not be connected in parallel
6) 2=polarity reversal protection, 3=short-circuit protection for all outputs
7) Rating voltage 250VAC
8) In stop position of the turning connector (turning connector locked)

Order guide 1)
Designation Part No.
With M12 connector
Transmitter and receiver SLSR 8/66.8-S12
Transmitter SLSSR 8.8-S12 50038791
Receiver SLSER 8/66-S12 50038792

1) Version 2010 A-Z

SLSR 8/66.8-S12 - 07 2013/02

SLSR 8 Protective throughbeam photoelectric sensors

Safety notices
Before using the safety sensor, a risk evaluation must be performed according to valid standards. For mounting, operation and
tests, this document as well as all applicable national and international standards and regulations must be observed, printed out
and handed to the affected personnel.
Before working with the safety sensor, completely read and observe the documents applicable to your task.
In particular, the following national and international legal regulations apply for the commissioning, technical inspections and
work with safety sensors:
- Machinery directive 2006/42/EC
- Use of Work Equipment Directive 89/655/EEC supplemented by Directive 95/63 EC
- Accident-prevention regulations and safety rules
- Other relevant standards
- Standards, e.g. ISO 13855
Symbols
Attention!
Warning sign – This symbol indicates possible dangers. Please pay especially close attention to these instructions!

This symbol identifies the transmitter. This symbol identifies the receiver.

Safety sensor area of application

The protective throughbeam photoelectric sensor is an active optoelectronic protective device only in connection with a safety-
relevant control system, in which the cyclical testing of transmitter and receiver is carried out in accordance with EN 61496-1, up
to category 2 and PL d in accordance with EN ISO 13849-1.

Attention!
z The safety sensor protects persons at access points or at points of operation of machines and plants.
z The safety sensor only detects persons upon entry to the danger area; it does not detect persons who are located
within the danger area. For this reason, a start-up/restart interlock is mandatory.
z No protective function without adequate safety distance.
z The power supply unit used to operate the photoelectric sensor has to be able to compensate for changes and
interruptions of the supply voltage acc. to EN 61496-1.
z Also observe the safety notices in the documentation of the connected test device!
z Additional measures must be taken to ensure that the AOPD does not experience a dangerous failure due to glare
from other light sources.

Proper use
The safety sensor must only be used after it has been selected in accordance with the respectively valid instructions and relevant
standards, rules and regulations regarding occupational safety and safety at work, and after it has been installed on the machine,
connected, commissioned, and checked by a competent person.

Foreseeable misuse
Any use other than that defined under the "Proper use" or which goes beyond that use is considered improper use. The user must
ensure that no optical influence on the AOPD occurs through other forms of light beams, e.g. through
- wireless control devices on cranes,
- radiation from welding sparks,
- stroboscopic lights.
Competent personnel
Prerequisites for competent personnel:
- He has a suitable technical education.
- He knows the instructions for the safety sensor and the machine.
- He has been instructed by the responsible person on the mounting and operation of the machine and of the safety sensor.
Responsibility for safety
Manufacturer and operator must ensure that the machine and implemented safety sensor function properly and that all affected
persons are adequately informed and trained.

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0 SLSR 8/66.8-S12 - 07
info@leuze.de • www.leuze.com
 SLSR 8
The manufacturer of the machine is responsible for:
- Safe implementation of the safety sensor.
- Imparting all relevant information to the operator.
- Adhering to all regulations and directives for the safe commissioning of the machine.
The operator of the machine is responsible for:
- Instructing the operating personnel.
- Maintaining the safe operation of the machine.
- Adhering to all regulations and directives for occupational safety and safety at work.
- Regular testing by competent personnel.

Safety distances
Attention!
The protective throughbeam photoelectric sensor must be installed with the correctly calculated safety distance as well
as suitable beam distances from a potentially dangerous motion: if an interruption of the light beam occurs, the danger
area may only be reached once the machine has already come to a dead stop.

a Transmitter b

b Receiver
c Deflection mirror
Beam distances in accordance with ISO 13855
a
Number of Heights above reference plane, Additional distance C
beams e.g. floor [mm] [mm]
900 mm

c
1 750 1200
2 400, 900 850
400 mm

3 300, 700, 1100 850

4 300, 600, 900, 1200 850

The safety distance S between photoelectric sensor and danger area is calculated using the following formula (ISO 13855):
S = (K · T) + C
S: Safety distance [mm] between photoelectric sensor and danger area.
K: Approach speed (constant = 1600 mm/s).
T: Time delay [s] between interruption of the light beam and stand-still of the machine.
C: Safety constant (additional distance) = 850mm or 1200mm, see table above.

Multi-axle installation
With multi-axle installation the light beams have to run parallel to the reference plane (e.g. floor) and must be aligned mutually
parallel.
For this the beam direction must be set oppositely in each case. Otherwise the light beams could cause mutual interference and
disturb proper functioning.

b a

a b
a Transmitter
b Receiver

Distance to reflecting surfaces

When mounting, a sufficiently large distance from the optical axis to reflecting surfaces must be selected.

4˚ f
d c e

4˚ a Distance to the reflecting surface

b Protected field width
c Reflecting surface
d Transmitter
e Receiver
f Object

SLSR 8/66.8-S12 - 07 2013/02

SLSR 8 Protective throughbeam photoelectric sensors

Commissioning
Alignment of the sensors
z Mount photoelectric sensors with corresponding fixing brackets from Leuze electronic.
z Apply operating voltage to transmitter and receiver and activate transmitter via activation input
(see "Electrical connection").
z Yellow LED on transmitter illuminates.
z Position receiver until the yellow LED illuminates.
Receiver LED blinks yellow: Light path free, but no performance reserve; clean and readjust photoelectric sensor, or check
operating conditions.

Safety notices for test function

1. To perform testing correctly the activation input of the SLSR 8 transmitter must be connected to a test monitoring unit.
2. The test duration during access protection must not exceed 150ms.
3. Subsequent to sensor activation the output switching elements of the test monitoring unit must remain in the 'off' state for at
least 80ms so that the downstream equipment can be switched off safely when the photoelectric sensor is used for access
protection.
4. In order to comply with points 2 and 3, the use of Leuze electronic test monitoring units (MSI-TR1) is recommended.

Check
The checks should ensure that the Optoelectronic Protective Devices have been used acc. to the national/international regulations,
in particular in accordance with the machine and work-equipment directive.

Check before initial commissioning

z Observe the nationally and internationally valid regulations.
z Is the required safety distance (protective field of the safety sensor to the next point of operation) maintained?
z Is the safety sensor effective during the entire dangerous movement and in all adjustable operating modes of the machine?
z It must not be possible to climb over, climb under or circumvent the light path.
z Ensure that the sensor only detects persons upon entry to the danger area and does not detect whether persons are located
within the danger area.
z Is a start-up/restart interlock present?
z Before they begin work, have a competent person train the operating personnel in their respective tasks.
Regular testing by competent personnel
The reliable interaction of safety sensor and machine must be periodically tested in order to detect changes to the machine or
impermissible tampering with the safety sensor.
z Have all tests performed by competent personnel.
z Observe the nationally and internationally applicable regulations and the time periods specified therein.
Daily check of the effectiveness of the safety sensor
It is extremely important to examine the effectiveness of the protective field daily so that it is ensured that e.g even with adjust-
ments to e.g. parameters, the protective function is active at all points.
Interrupt the light beam between the transmitter and receiver (test rod Ø 13mm)
- in front of the transmitter.
- in the middle between the transmitter and receiver.
- in front of and behind the deflection mirror.
It must not be possible to initiate the dangerous state during beam interruption.

Disposal
For disposal observe the applicable national regulations regarding electronic components.

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0 SLSR 8/66.8-S12 - 07
info@leuze.de • www.leuze.com
 SLSR 8

SLSR 8/66.8-S12 - 07 2013/02