schmersal EX-BN 20 series User manual

EX-BN 20
Operating instructions
Magnetic reed switches
EN 1
1. About this document
1.1 Function
This operating instructions manual provides all the information
required 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 product 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.
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of
the component, personal hazards or damage 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.
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 ...................................1
1.7 Exclusion of liability .....................................1
2 Product description
2.1 Ordering code .........................................2
2.2 Special versions........................................2
2.3 Purpose ..............................................2
2.4 Technical data .........................................2
3 Mounting
3.1 General mounting instructions .............................2
3.2 Dimensions ...........................................2
4 Rear side Electrical connection
4.1 General information for electrical connection..................3
4.2 Contact variants and switch travel ..........................3
4.3 Switching capacity ......................................3
5 Set-up and maintenance
5.1 Commissioning ........................................3
5.2 Maintenance ..........................................3
6 Disassembly and disposal
6.1 Disassembly...........................................3
6.2 Disposal ..............................................3
7 EU Declaration of conformity
x.000 / 11.2017 / v.A. - 101182520-EN / F / 2017-11-14 / AE-Nr. 8380
EN Operating instructions. . . . . . . . . . . . .pages 1 to 4
Original

2
Operating instructions
Magnetic reed switches EX-BN 20
EN
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-BN 20-➀Z-3G/D
No. Insert Description
➀
01 1 NC
02 2 NC
10 1 NO
20 2 NO
11 1 NC / 1 NO
R 1 bistable contact
2R 2 bistable contact
11R 2 bistable contact NC / NO
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 magnetic reed switch can be used for monitoring the position of
movable guards and flaps in explosion-endangered areas of Zone 2
and 22 category 3GD. Installation and maintenance requirements to the
standard series EN 60079 must be met.
Actuation of the magnetic reed switch is only possible with the actuators
listed (see list in catalogue "Explosion Protection"). Faultless operation
and repeat accuracy is only assured with these actuators.
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level.
Conditions for safe operation
Due to the 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.
2.4 Technical data
Equipment category: L II 3GD
Ex protection: Ex nC IIC T5 Gc X, Ex tc IIIC T90°C Dc X
Standards: EN 60079-0, EN 60079-15, EN 60079-31
Enclosure: AlSi 12 die-casting, painted
Max. impact energy: 4 J
Protection class: IP67 to IEC 60529
Connection: screw terminals
Cable section: max. 1.5 mm² (incl. conductor ferrules)
Cable entry: 2x M16
Operating principle: magnetic
Switching voltage: max. 250 VAC/DC
Switching current: max. 3 A
Switching capacity: max. 120 VA/W
Dielectric strength: > 600 VAC (50 Hz)
Actuating speed: max. 18 m/s
Switching frequency: max. 300/s
Switching time “Close”: 0.3 ms … 1.5 ms
Switching time “Open”: max. 0.5 ms
Bounce duration: 0.3 ms … 0.6 ms
Ambient temperature: – 15 °C … + 70 ºC
Storage temperature: – 25 °C … + 70 °C
Mechanical life: 108operations
Electrical life: 1 million … 1 billion operations, depending on load
Resistance to vibration: 50 g on sine wave oscillation
Switching point accuracy: ± 0.25 mm, T = constant
Resistance to shock: 30 g / 11 ms
Resistance to vibration: 10 … 55 Hz, amplitude 1 mm
Tightening force:
‒Cover screws: min. 0.6 Nm
‒Cable gland: min. 1.2 Nm
‒Blocking screws: min. 1.2 Nm
Cable glands: L II 2GD
Cable cross-section of the cable glands: min. Ø 6 mm;
max. Ø 10 mm
3. Mounting
3.1 General mounting instructions
Fitting is only authorised in a de-energised condition
• Any mounting position, provided that the active surfaces are opposite.
• Do not use the magnetic reed switch as limit stop.
• Two elongated holes are available for fastening the enclosure.
• Ensure the magnetic reed switch is mounted on a flat surface to avoid
tensile stresses that could damage the sensor or lead to varying
switching distances.
• Do not install magnetic reed switches and actuators in strong
magnetic fields.
• If possible do not install the magnetic reed switch and actuator on
ferromagnetic material.
• Do not expose the magnetic reed switch and actuator to strong
vibrations or heavy shocks.
• Inseparably fix the magnetic reed switch and actuator to the safety
guard.
• The use of a protective ground wire is imperative.
• Keep away from metal chips.
Please observe the recommendations regarding maximum
impact energy, actuating speed and tightening torque in the
technical data.
Any changes and alterations that limit the explosion
protection are not allowed.
Please observe the relevant requirements of the standards
ISO 12100, EN 953 and ISO 14119.
3.2 Dimensions
All measurements in mm.
6,5
60
75
30
22 104
M 16x1,5
M 16x1,5
7,5
1621,5
6,5
10
9,5
25
11,5
47
52

3
EX-BN 20
Operating instructions
Magnetic reed switches
EN
4. Rear side 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 contact labelling can be found in the wiring compartment of the
switch.
Cable glands (included in delivery) are only authorised for permanent
cables. The constructor must provide for the necessary strain relief. After
wiring, dust and soiling must be removed from the wiring compartment.
4.2 Contact variants and switch travel
10
17
+
-3
17
+
-3
1 NO contact EX-BN 20-10z-3G/D or 1 NC contact
EX-BN 20-01z-3G/D with switching magnet BP 20
10
1 bistable contact EX-BN 20-rz -3G/D
with N actuating magnet BP 20N
10
1 bistable contact EX-BN 20-rz -3G/D
with N actuating magnet BP 20S
In version -10 and -01: When the switches and actuators
come together, the colours must coincide: Red (S) to red (S)
and green (N) to green (N).
4.3 Switching capacity
1,3
A
1,2
1,1
1,0
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
24 80 120150 220 250 V
5. Set-up and maintenance
5.1 Commissioning
• The magnetic reed switch is not damaged.
• The installation is executed according to the instructions.
• The connection is executed correctly.
• The cable is correctly executed and connected.
• The cable gland is correctly screwed-in and tightened.
• The cover is correctly screwed and closed.
5.2 Maintenance
In case of correct installation in accordance with the instructions
described above, the component requires little maintenance. For use in
extreme conditions, we recommend routine maintenance including the
following steps:
• Check the actuator and the magnetic reed switch for correct seating
• Remove particles of dust and soiling.
• Check that the cable glands are fitted in accordance with the
applicable operating instructions manual
Do not open the device when live.
Damaged or defective components must be replaced.
6. Disassembly and disposal
6.1 Disassembly
The switch must be disassembled in a de-energised condition only.
6.2 Disposal
The switch must be disposed of in an appropriate manner in
accordance with the national prescriptions and legislations.

4EN
EX-BN20-C-EN
Operating instructions
Magnetic reed switches EX-BN 20
7. EU Declaration of conformity
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
Name of the component: EX-BN 20
L II 3G Ex nC IIC T5 Gc X
L II 3D Ex tc IIIC T90°C Dc X
Type: See ordering code
Description of the component: Magnetic reed switches
Relevant Directives: Explosion Protection Directive (ATEX)
RoHS-Directive
2014/34/EU
2011/65/EU
Applied standards: EN 60079-0:2012 + A11:2013,
EN 60079-15:2010,
EN 60079-31:2014
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, May 2, 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.
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