Operating instructions
Safety-monitoring module
EN
Operating instructions...................... pages 1 to 4
Translation of the original operating instructions
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SRB 301AN
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for the mounting, set-up and commissioning to ensure the safe
operation and disassembly of the safety-monitoring module. The
operating instructions must be available in a legible condition and a
complete version in the vicinity of the device.
1.2 Target group: authorised qualied personnel
All operations described in this operating instructions manual must
be carried out by trained specialist personnel, authorised by the plant
operator only.
Please make sure that you have read and understood these operating instructions and that you know all applicable legislations regarding
occupational safety and accident prevention prior to installation and
putting the component into operation.
The machine builder must carefully select the harmonised standards
to be complied with as well as other technical specications for the
selection, mounting and integration of the components.
1.3 Explanation of the symbols used
Information, hint, note:
This symbol is used for identifying useful additional information.
Content
1 About this document
1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Target group: authorised qualied personnel. . . . . . . . . . . . . . . . . .1
1.3 Explanation of the symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.4 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.5 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.6 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.7 Exclusion of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Product description
2.1 Ordering code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.2 Special versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.3 Destination and use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 Safety classication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3 Mounting
3.1 General mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4 Electrical connection
4.1 General information for electrical connection. . . . . . . . . . . . . . . . . . 3
5 Operating principle and settings
6 Set-up and maintenance
6.1 Functional testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
6.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Caution: Failure to comply with this warning notice could
lead to failures or malfunctions.
Warning: Failure to comply with this warning notice could
lead to physical injury and/or damage to the machine.
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 proper functionality of the entire machinery or plant.
The safety-monitoring module 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 instruc-
tions manual, the country-specic 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:
www.schmersal.net.
The information contained in this operating instructions manual is pro-
vided without liability and is subject to technical modications.
The entire concept of the control system, in which the safety
component is integrated, must be validated to EN ISO 13849-2.
03.02.2010 / Index 65/10 / Teile-Nr. 1166039-EN
7 Disassembly and disposal
7.1 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
8 Appendix
8.1 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
8.2 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of the
safety-monitoring module, personal hazards or damage to machinery or plant components cannot be excluded. The relevant
requirements of the standard EN 1088 must be observed.
EN
1
Operating instructions
Safety-monitoring module SRB 301AN
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 modications to the device are strictly forbidden; the
manufacturer shall accept no liability for damages resulting from such
invasive work, arbitrary repairs, conversions and/or modications to the
device.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 301AN
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.
2.2 Special versions
For special versions, which are not listed in the order code below 2.1,
these specications apply accordingly, provided that they correspond to
the standard version.
2.3 Destination and use
The safety-monitoring modules for integration in safety circuits are
designed for tting in control cabinets. They are used for the safe
evaluation of the signals of positive break position switches for safety
functions or magnetic safety sensors on sliding, hinged and removable
safety guards.
Design
The safety-monitoring module has a multichannel structure. It includes
two safety relays with monitored positive action contacts. The NO
contacts of the relays, which are wired in series, build the enabling
contacts.
2.4 Technical data
Max. fuse rating of the
operating voltage:
internal electronic fuse, tripping
current > 0.5 A, reset after
approx. 1 sec.
Power consumption: 2.1 W; 3.5 VA
Input monitoring:
Cross-wire short detection: yes
Wire breakage detection: yes
Earth leakage detection: yes
Number of NC contacts: 1
Number of NO contacts: 1
Outputs:
Stop category 0: 3
Stop category 1: 0
Number of safety contacts: 3
Number of auxiliary contacts: 0
Number of signalling outputs: 1
Switching capacity of
250 VAC: 6 A ohmic
the safety contacts:
Switching capacity of the signal-
Y1: 24 VDC / 100 mA
ling outputs:
Utilisation category to EN 60947-5-1:
AC-15: 230 V / 6 A
DC-13: 24 V / 6 A
Max. fuse rating: 6 A gG D-fuse
Mechanical life: 10 million operations
LED indication: yes
Ambient conditions:
Operating temperature: -25°C…+45°C
Storage and transport
-25°C…+70°C
temperature:
Protection class: Enclosure: IP 40
Terminals: IP 20
Wiring compartment: IP 54
Degree of pollution: 2
Fixing: Snaps onto standard DIN
rails to DIN EN 60715
Connection type: Plug-in screw connection
Connecting cable: rigid or exible
Min. cable section: 0.25 mm
2
Max. cable section: 2.5 mm2, solid strand or
multi-strand lead
(including conductor ferrules)
Weight: 235 g
Dimensions (H/W/D): 120 x 22.5 x 121 mm
The data specied in this manual is applicable when the component is
operated with rated operating voltage U
±0%.
e
Standards: IEC/EN 60204-1, IEC 60947-5-3,
EN IS0 13849-1, IEC 61508, BGGS-ET-14
Start conditions automatic or start button (optio-
nally monitored)
Feedback circuit available: yes
Pull-in delay for automatic start: typ. 120 ms
Pull-in delay with reset button: typ. 30 ms
Drop-out delay: ≤ 20 ms
Rated operating voltage U
: 24 VDC -10% / +20%
e
residual ripple max. 10%
24 VAC –-15% / +10%
Rated operating current I
Rated insulation voltage U
Rated impulse withstand voltage
U
:
imp
Thermal test current I
: 0.09 A
e
: 250 V
i
: 6 A
the
4 kV
Internal electronic fuse: yes
2.5 Safety classication
Standards: EN ISO 13849-1; IEC 61508
PL: up to e
Control category: up to 4
PFH value: 5.0 x 10
-9
/ h; applicable for
applications with up to max.
36,500 switching cycles / year and
max. 60 % contact load. Diverging
applications upon request.
SIL: up to 3
Service life: 20 years
2
EN
Operating instructions
L1
Safety-monitoring module
SRB 301AN
3 Mounting
3.1 General mounting instructions
Mounting: snaps onto standard DIN rails to EN 60715.
3.2 Dimensions
Device dimensions (H/W/D): 120 x 22.5 x 121 mm
4 Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out
by authorised personnel in a de-energised condition.
Wiring examples: see appendix
5 Operating principle and settings
Operating principle after the operating voltage is switched on
With the guard door closed, the enabling paths are closed as soon as
the start button is pushed. During the start command, the falling edge
is detected, when the contacts of the downstream relays acting on the
feedback circuit are closed.
If the safety guard is opened, the enabling paths of the safety-monitoring module will open.The machine is stopped and the LED K1 and K2
will go out.
6 Set-up and maintenance
6.1 Functional testing
The safety function of the safety-monitoring module must be tested.
The following conditions must be previously checked and met:
1. Correct xing
2. Fitting and integrity of the power cable
6.2 Maintenance
In the case of correct installation and adequate use, the safety-monitoring module features maintenance-free functionality.
A regular visual inspection and functional test, including the following
steps, is recommended:
• Check the correct xing of the safety-monitoring module
• Check the cable for damage.
Damaged or defective components must be replaced.
7 Disassembly and disposal
7.1 Disassembly
The safety-monitoring module must be disassembled in a de-energised
condition only.
7.2 Disposal
The safety-monitoring module must be disposed of in an appropriate
manner in accordance with the national prescriptions and legislations.
8 Appendix
Inputs S13-S14; S21-S22
Safety sensor with one NC and one NO contact must be connected to
the inputs.
Start button/Feedback loop: X1/X2
Connect start button/feedback circuit to the inputs X1 and X2 according
to the wiring diagram
Automatic start X1-X3
The automatic start is programmed by connecting the feedback circuit
to the terminals X1-X3.
If no start button and no feedback circuit is used, a bridge must be
established between X1 and X3.
Outputs
Enabling paths 13-14; 23-24; 33-34:
NO contacts for safety functions
Signalling output Y1
0 V safety guard closed / enabling signal
24 V safety guard open / no enabling signal
The signalling output Y1 must not be integrated in the safety circuit.
8.1 Wiring examples
The application examples shown are suggestions. They however do not
release the user from carefully checking whether the switchgear and its
set-up are suitable for the individual application.
The wiring diagram is shown with guard doors closed and in a deenergised condition. Inductive loads (e.g. contactors, relays, etc.) are
to be provided with suitable interference suppression circuitry.
SRB 301AN
Guard door monitoring by means of a magnetic safety sensor (BNS)
S
A
H
24 VDC
A1
A2
=
S13 S14 S21
F1
UB
Ui
S22
Ansteuerlogik/Logic
K1
K2
X1 X2
X3
K1
K2
33
23
13
34
24
14
Y1
0V
AES 1337
K3
K4
N
M
3
Legend
A S Non-contact safety sensor
H
Start button
EN
3
Operating instructions
Safety-monitoring module SRB 301AN
Appendix
8.2 Declaration of conformity
EC Declaration of conformity
Translation of the original declaration of conformity
valid as of December 29, 2009
We hereby certify that the hereafter described safety components both in its basic design and
construction conform to the applicable European Directives.
Name of the safety component / type: SRB 301AN
Description of the safety component: Safety-monitoring module for non-contact
Harmonised EC-Directives: 2006/42/EC EC-Machinery Directive
Person authorized for the compilation
of the technical documentation:
Notied body, which approved the full
quality assurance system, referred to in
Appendix X, 2006/42/EC:
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2 · 35435 Wettenberg
Germany
Internet: www.elan.de
safety switches and safety relay combination in connection with the BNS series
magnetic safety switches
2004/108/EC EMC-Directive
Ulrich Loss
Möddinghofe 30
42279 Wuppertal
TÜV Rheinland Industrie Service GmbH
Alboinstrasse 56
12103 Berlin
ID n°: 0035
Place and date of issue: Wuppertal, October 7, 2009
SRB301AN-B-EN
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2, D - 35435 Wettenberg
Postfach 1109, D - 35429 Wettenberg
Telefon: +49 (0)641 9848-0
Telefax: +49 (0)641 9848-420
E-Mail: info-elan@schmersal.com
Internet: www.elan.de
Authorised signature
Heinz Schmersal
Managing Director
Note
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
4
EN
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