schmersal EX-BNS 303-2187 User manual

EX-BNS 303-2187
Operating instructions
Safety sensor
EN 1
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 switchgear. 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 qualified 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 specifications 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.
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 correct functionality of the entire machine or plant.
The safety switchgear 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:
www.schmersal.net.
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications.
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
Content
1 About this document
1.1 Function ..............................................1
1.2 Target group: authorised qualied 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 Purpose ..............................................2
2.4 Technical data .........................................2
2.5 Safety classication .....................................2
3 Mounting
3.1 General mounting instructions .............................3
3.2 Dimensions ...........................................3
3.3 Axial misalignment......................................3
3.4 Adjustment............................................3
4 Electrical connection
4.1 General information for electrical connection..................4
4.2 Contact variants........................................4
4.3 Connection............................................4
5 Set-up and maintenance
5.1 Functional testing.......................................4
5.2 Maintenance ..........................................4
6 Disassembly and disposal
6.1 Disassembly...........................................4
6.2 Disposal ..............................................4
7 EU Declaration of conformity
x.000 / 09.2017 / v.A. - 101185029-EN / D / 2017-09-18 / AE-Nr. 8129
EN Operating instructions. . . . . . . . . . . . .pages 1 to 6
Original

2
Operating instructions
Safety sensor EX-BNS 303-2187
EN
1.6 Warning about misuse
In case of improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery
or plant components cannot be excluded. The relevant
requirements of the standard ISO 14119 must be observed.
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 Ordering code
This operating instructions manual applies to the following types:
EX-BNS 303-12Z
➀
-2187-3G/D
No. Option Description
➀
without LED
G with LED
2.2 Special versions
For special versions, which are not listed in the order code below 2.1,
these specifications apply accordingly, provided that they correspond to
the standard version.
2.3 Purpose
The safety sensor can be used for monitoring the position of movable
guards and flaps in explosion-endangered areas of Zone 2 and 22
category 3GD. The installation and maintenance requirements to the
standard series EN 60079 must be met. To actuate the EX-BNS 303
safety sensors, only the BPS 300, BPS 303 or BPS 303 SS actuators
can be used.
The safety switches are used for applications, in which the hazardous
situation is terminated without delay when the safety guard is opened.
The safety switchgears are classified according to
ISO 14119 as type 4 interlocking devices.
Only the entire system consisting of the safety sensor (EX-BNS), the
actuator (BPS) and the safety-monitoring module (AES/SRB/AZR)
meets the requirements of the standard IEC 60947-5-3.
Conditions for safe operation
Due to their specific impact energy, the components must be fitted
with a protection against mechanical stresses.
The specific ambient temperature range must be observed. The user
must provide for a protection against the permanent influence of UV
rays. The energy restriction for LED versions (24 V/10 mA) must be
ensured by the user.
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level.
The entire concept of the control system, in which the
safety component is integrated, must be validated to the
relevant standards.
2.4 Technical data
Equipment category: L II 3GD
Ex protection: Ex nC IIC T6 Gc X; Ex tc IIIC T80°C Dc X
Standards: IEC 60947-5-3; EN 60079-0; EN 60079-15;
EN 60079-31; ISO 80079-36; BG-GS-ET-14
Design: cylindrical
Tightening torque: SW 36 max. 300 Ncm
Enclosure: glass-fibre reinforced thermoplastic
Max. impact energy: 1 J
Protection class: IP67 to IEC 60529
Connection: Boflex cable
Cable section: 6 x 0.25 mm²
Operating principle: magnetic
Actuating magnet: BPS 300 ,BPS 303,
BPS 303 SS, coded
Assured switching distance sao:5 mm
Assured switch-off distance sar:15 mm
Coding level according to ISO 14119: low
Switching condition indication: LED only with ordering suffix G
Switching voltage max.: without LED: 100 VAC / DC
with LED: 24 VDC
Switching current max.: without LED: 400 mA
with LED: 10 mA
Switching capacity max.: without LED: 10 W
with LED: 240 mW
Ambient temperature: −25 °C ... +70 °C
Storage and transport temperature: −25 °C ... +70 °C
Max. switching frequency: 5 Hz
Resistance to shock: 30 g / 11 ms
Resistance to vibration: 10 ... 55 Hz, amplitude 1 mm
2.5 Safety classification
Standards: ISO 13849-1
B10D (NC/NO contact): 25,000,000
at max. 20 % contact load
Service life: 20 years
MT
TF
Bdxx
hs/h3600
D
10Dopop
op
n
0,1 x nop tcycle
(Specifications can vary depending on the application-specific
parameters hop, dop and tcycle as well as the load.)
An individual switch can be used in a category 3 or 4 architecture
up to PL e.
If multiple safety components are wired in series, the Performance
Level to ISO 13849-1 will be reduced due to the restricted error
detection under certain circumstances.

3
EX-BNS 303-2187
Operating instructions
Safety sensor
EN
3. Mounting
3.1 General mounting instructions
• Fitting is only authorised in a de-energised condition
• Screw both nuts in the provided mounting holes to fix the safety
sensor (max. tightening torque 300 Ncm)
• Do not use the sensor and the actuator as a mechanical backstop
• Any mounting position, provided that the active surfaces and signs
on it are opposite
• Inseparably fix the safety sensor and the actuator to the safety guard
• Do not install the safety sensor and the actuator in strong magnetic
fields
• If possible, do not install the safety sensor and the actuator on
ferromagnetic material.
• Do not subject the safety sensor and actuator to extreme vibrations
and shocks.
• Keep away from metal chips
• The mounting distance between two sensors should always be at
least 50 mm.
Please observe the specifications for the maximum impact
energy in the technical data.
Safety sensor and actuator must be permanently fitted to the
safety guards and protected against displacement by suitable
measures (tamperproof screws, gluing, drilling of the screw
heads).
3.2 Dimensions
All measurements in mm.
Safety sensor with cable
44
M 30 x 1,5
1000
636
Actuator
BPS 300
2
30
15
90°
14
ø 2
ø 4,5
BPS 303
15
2
14
ø 2
ø 37
ø 30
BPS 303 SS
2
1,5
13,8
15 M4
ø 30
ø 37
Actuator BPS 303 and BPS 303 SS
The actuators are primarily provided for use in the food-processing
industry and therefore are not labelled.
The actuators are fixed by means of the supplied tamper-proof screws.
The mounting hole must have a diameter of 4.5 mm. Next to the
mounting hole, a second mounting hole must be provided. This hole is
used for the fixture of the displacement protection dowel.
Position of the dowel: refer to the image in chapter "Axial misalignment".
3.3 Axial misalignment
A horizontal and vertical misalignment of the safety sensor and the
actuator is tolerated. The possible misalignment depends on the
distance of the active surfaces of the sensor and the actuator.
The sensor remains active within the tolerance range.
The specified switching distances refer to opposedly mounted safety
sensors and actuators.
0,5
0
1
2
3
4
5
1
2
3,5
4
3
5
7
9
10
assured switching distance: sao = 5 mm
Assured switch-off distance sao = 15 mm
3.4 Adjustment
The LED can only be used as rough setting tool. The correct
functionality of both safety channels must be checked by means of
the connected safety-monitoring module.

4
Operating instructions
Safety sensor EX-BNS 303-2187
EN
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.
The safety sensors must be wired in accordance with the specified
wire colours.
4.2 Contact variants
The contact position shows the actuated sensor function when the
safety guard is closed.
1 NO contacts / 2 NC contacts with LED
EX-BNS 303-12Z-2187-3G/D EX-BNS 303-12ZG-2187-3G/D
GY 13
GN 21
WH 31
14 PK
22 YE
32 BN
GY 13
GN 21
WH 31
14 PK
32 BN
22 YE
4.3 Connection
For safety-monitoring modules with two NC inputs, the wires of the
safety sensor must be wired as follows:
NO contacts: GY (13) and PK (14) at the "NO input" of the
safety-monitoring module
NC contacts: GN (21) und YE (22) at the "NC input" of the
safety-monitoring module
NC contacts: WH (31) und BN (32) can be used for signalling
purposes.
Information for the selection of suitable safety-monitoring
modules can be found in the Schmersal catalogues or in the
online catalogue on our website: www.schmersal.net.
Technically, multiple safety sensors can be wired to one AES safety-
monitoring module (check if authorised!). The NO contacts are wired
parallel and the NC contacts in series. The input expander modules
PROTECT-IE-11 and -02 or PROTECT-PE-11(-AN) and -02 can be
used for joint connection up to 4 safety sensors with NC/NC or NC/NO
contacts.
Connecting more than two EX-BNS 303-12Z safety sensors to the
AES 7112 or AES 1102/1112 safety-monitoring module is not
possible. For connecting only one safety sensor: refer to the operating
instructions manual of the AES 7112 or AES 1102/1112.
Safety sensors equipped with LED's shall not be wired in series, except
for the PROTECT-IE or PROTECT-PE input expander module. As a
result of this, the luminosity of the LED's would considerably decrease
and the voltage could drop below the minimum input voltage of the
downstream safety-monitoring module.
In case of series-wiring at SRB max. 1 sensor with LED indication for UN.
5. Set-up and maintenance
5.1 Functional testing
The safety function of the safety components must be tested.
The following conditions must be previously checked and met:
1. The installation is executed according to the instructions
2. The connection is executed correctly
3. The safety component is not damaged
4. The system is free of dirt and soiling (in particular metal chips)
5. Check cable entry and connections in a de-energised condition
5.2 Maintenance
In the case of correct installation and adequate use, the safety sensor
features maintenance-free functionality. A regular visual inspection and
functional test, including the following steps, is recommended:
• Check the fitting of the sensor and the actuator
• Remove possible metal chips
• Check the cable for damage.
• Check cable entry and connections in de-energised condition
Adequate measures must be taken to ensure protection
against tampering either to prevent tampering of the safety
guard, for instance by means of replacement actuators.
Damaged or defective components must be replaced.
6. Disassembly and disposal
6.1 Disassembly
The safety switchgear must be disassembled in a de-energised
condition only.
6.2 Disposal
The safety switchgear must be disposed of in an appropriate manner
in accordance with the national prescriptions and legislations.

5
EN
EX-BNS303-D-EN
EX-BNS 303-2187
Operating instructions
Safety sensor
7. EU Declaration of conformity
Name of the component: EX-BNS 303
L II 3G Ex nC IIC T6 Gc X
L II 3D Ex tc IIIC T80°C Dc X
Type: See ordering code
Description of the component: Coded safety-sensor with magnetic operating principle in
combination with the AES / AZR / SRB safety-monitoring modules
from Schmersal or an equivalent safety-oriented control system
fullling the requirements of the IEC 60947-5-3.
Relevant Directives: Machinery Directive
Explosion Protection Directive (ATEX)
RoHS-Directive
2006/42/EC
2014/34/EU
2011/65/EU
Applied standards: DIN EN 60947-5-3:2014,
EN 60079-0:2012 + A11:2013,
EN 60079-15:2010,
EN 60079-31:2014,
EN ISO 80079-36:2016
Notied body, which approved the full
quality assurance system, referred to in
Appendix IV, 2014/34/EU:
TÜV Rheinland Industrie Service GmbH
Am Grauen Stein
51105 Köln
ID n°: 0035
Person authorised for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
Place and date of issue: Wuppertal, August 31, 2017
Authorised signature
Philip Schmersal
Managing Director
EU Declaration of conformity
Original K.A. Schmersal GmbH & Co. KG
Möddinghofe 30
42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described components both in their basic design and construction conform
to the applicable European Directives.
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.

K. A. Schmersal GmbH & Co. KG
Möddinghofe 30, D - 42279 Wuppertal
Postfach 24 02 63, D - 42232 Wuppertal
Phone: +49 - (0)2 02 - 64 74 - 0
Telefax: +49 - (0)2 02 - 64 74 - 1 00
E-Mail: [email protected]
Internet: http://www.schmersal.com