2
Operating instructions
Safety light barriers
SLB240
EN
1.4 Appropriate use
The products described in these operating instructions are developed to
execute safety-related functions as part of an entire plant or machine It
is the responsibility of the manufacturer of a machine or plant to ensure
the correct functionality of the entire machine or plant
The safety device must be exclusively used in accordance with
the versions listed below or for the applications authorised by the
manufacturer Detailed information regarding the range of applications
can be found in the chapter "Product description"
1.5 General safety instructions
The user must observe the safety instructions in this operating
instructions manual, the country-specific installation standards as well
as all prevailing safety regulations and accident prevention rules
Further technical information can be found in the Schmersal
catalogues or in the online catalogue on the Internet:
productsschmersalcom
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications
The entire concept of the control system, in which the
safety component is integrated, must be validated to
EN ISO 13849-2
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed
Additional measures could be required to ensure that the system
does not present a dangerous breakdown, when other forms of light
beams are available in a special application (eg use of wireless
control devices on cranes, radiation of welding sparks or effects of
stroboscopic lights)
1.6 Warning about misuse
In case of improper use or manipulation of the safety switch-
gear, personal hazards or damages to machinery or plant
components cannot be excluded when safety device is used
The relevant requirements of the standards EN ISO 13855
& EN ISO 13857 must be observed.
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefore
the compliance with the Machinery Directive is maintained
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual The manufacturer shall accept no liability for damages
resulting from the use of unauthorised spare parts or accessories
For safety reasons, invasive work on the device as well as arbitrary
repairs, conversions and modifications to the device are strictly
forbidden; the manufacturer shall accept no liability for damages
resulting from such invasive work, arbitrary repairs, conversions and/or
modifications to the device
2. Product description
2.1 Purpose and use
The SLB is a non-contact, self-testing safety device, which is used
for the protection of hazardous points, hazardous areas and machine
access If one or more light beams are interrupted, the hazardous
movement must be stopped
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level
2.2 Ordering code
This operating instructions manual applies to the following types:
SLB240-ER-
➀
-
➁
No. Option
Description
➀
1
Beam coding 1
2
Beam coding 2
3
Beam coding 3
4
Beam coding 4
➁
ST
Termination male connector
LST
Cable with connector
• Range 03 m 150 m
2.3 Special versions
For special versions, which are not listed in the order code, these
specifications apply accordingly, provided that they correspond to the
standard version
2.4 Included in delivery
Transmitter, receiver, operating instructions DE/EN
2.5 Technical data
Standards:
EN 61496-1; EN 61496-2; EN ISO 13849; EN 62061
Material of the enclosure:
Aluminium
Detection ability for test bodies:
10 mm static
1)
SLB range:
03 … 150 m
Reaction time:
- Beam coding 1, impulse pattern 1, 5 samplings:
10 ms
- Beam coding 2, impulse pattern 2, 5 samplings:
14 ms
- Beam coding 3, impulse pattern 3, 5 samplings:
18 ms
- Beam coding 4, impulse pattern 4, 5 samplings:
22 ms
- Beam coding 5, impulse pattern 1, 3 samplings:
7 ms
Rated operating voltage:
24 VDC ± 10%, 1 A
PELV mains unit in accordance with EN 60204 (power failure bypass 20 ms)
Rated operating current:
100 mA + 200 mA each OSSD
Wavelength of the infrared radiation:
880 nm
Transmitter, infrared emitted radiation
- to DIN EN 12198-1:
Category 0
- to DIN EN 62471:
free group
Safety outputs
OSSD1, OSSD2:
2 x short-circuit proof PNP semi-conductor outputs
Test impulse cycle OSSD:
600 ms
Test impulse length:
max 200 µs
Switching voltage HIGH
2)
:
>15 V
Switching voltage LOW
2)
:
<2 V
Switching current each OSSD:
200 mA
Leakage current
3)
:
<1 mA
Load capacity:
max 200 nF
Load inductance
4)
:
max 2 H
Inputs:
- Restart:
100 ms to 1500 ms monitored
- Test:
20 ms up to 10 s, monitored
Input Test LOW:
Switching off transmitter = 8 ms
Input Test HIGH:
Switch-on output = 92 ms
Function:
Protective mode / Automatic,
Restart Interlock (manual reset), Setting mode
Status indication receiver:
End cap with integrated status indication
Connection:
- Transmitter:
connector M12, 4-pole
- Receiver:
connector M12, 5-pole
Ambient temperature:
−30° C … + 50° C
Storage temperature:
−30° C … + 70° C
Protection class:
IP67 (IEC 60529)
Resistance to vibration:
10 … 55 Hz to IEC 60068-2-6
Resistance to shock:
10 g, 16 ms, to IEC 60028-2-29
Weight:
SLB240-ST: 0,14 kg, SLB240-LST: 0,15 kg
Year of construction:
as of 2016 version 10
