schmersal EX-AZ 16-12ZV(R)K-3D, EX-AX 16 Series, EX-AZ 16-03ZV(R)K-3D Operating Instructions Manual
Operating instructions
Safety switch
Operating instructions. . . . . . . . . . . . .pages 1 to 4
EN
Original
EX-AZ 16
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
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 ...................................1
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
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.
x.000 / 10.2016 / v.A. - 101185263-EN / H / 2016-10-24 / AE-Nr. 6668
4 Electrical connection
4.1 General information for electrical connection..................3
4.2 Contact variants........................................3
5 Set-up and maintenance
5.1 Functional testing.......................................3
5.2 Maintenance ..........................................3
6 Disassembly and disposal
6.1 Disassembly...........................................3
6.2 Disposal ..............................................3
7 EU Declaration of conformity
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 improper use or manipulation of the safety switchgear, personal hazards or damages to machinery or plant
components cannot be excluded when safety switchgear is
used. The relevant requirements of the standard ISO 14119
must be observed.
EN
1
Operating instructions
MT
Bdxxhs/h3600
0,1 x n
op
t
cycle
Safety switch
EX-AZ 16
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-AZ 16
-
➀ZV➁
-➂-
K
3D
No. Option Description
03 3 NC
➀
12 1 NO / 2 NC
➁
Ejection force
R Latching force 30 N
2254 Latching force 5 N
➂
1762 Front mounting
1637 Gold-plated contacts
Only if the information described in this operating instructions
manual are realised correctly, the safety function and
therefore the compliance with the Machinery Directive and
the Explosion Protection Directive is maintained.
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.
2.4 Technical data
Equipment category:
L
II 3D
Ex protection: Ex tc IIIC T90°C Dc X
Standards: EN 60947-5-1, EN 60079-0,
EN 60079-31, BG-GS-ET-15
Coding level according to ISO 14119: low
Enclosure: glass-fibre reinforced thermo-
plastic, self-extinguishing
Max. impact energy: 1 J
Actuating speed: max. 1 m/s
Actuator: stainless steel 1.4301
Protection class: IP67
Contact material: Silver
Contact type: change-over with double break Zb,
or 3 NC contacts, galvanically
separated contact bridges
Switching system:
A
EN 60947-5-1, slow action,
NC contact with positive break
Connection: screw terminals
Cable section: max. 2.5 mm² (incl. conductor ferrules)
Cable entry: 3 x M16 x 1.5
Rated impulse withstand voltage U
: 6 kV
imp
Rated insulation voltage Ui: 500 V
Thermal test current I
: 2.5 A
the
Utilisation category: AC-15 / DC-13
Rated operating current/voltage Ie/Ue: 2.5 A / 230 VAC
2.5 A / 24 VDC
Max. fuse rating: 4 A gG D-fuse
Positive break travel: 8 mm
Positive break force: each NC contact 10 N
Ambient temperature: –20 °C … +70 °C
Mechanical life: max. 1 million operations
Latching force: 30 N for ordering suffix R
Tightening torque: cover screws: min. 0.6 Nm
cable gland: min. 3 Nm
locking screws: min. 3 Nm
Cable glands:
L
II 2GD
Cable cross-section: min. Ø 5 mm; max. Ø 10 mm
2.3 Destination and use
The safety switches of the EX-AZ 16 series are suitable for sliding,
hinged and removable safety guards, which need to be closed to
ensure the necessary operational safety.
The components can be used in explosion-endangered areas of Zone
22 equipment category 3D. allation and maintenance requirements to
the standard series EN 60079 must be met.
The safety switchgears are classified according to ISO 14119
as type 2 switching devices.
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.
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.
2.5 Safety classification
Standards: ISO 13849-1
Envisaged structure:
- Basically: applicable up to Cat. 1 / PL c
- With 2-channel usage and
fault exclusion mechanism*: applicable up to Cat. 3 / PL d
with suitable logic unit
B
NC contact: 2,000,000
10D
B
NO contact at 10% ohmic contact load: 1,000,000
10D
Service life: 20 years
* If a fault exclusion to the 1-channel mechanics is authorised.
TF
D
10Dopop
n
op
(Determined values can vary depending on the application-specific
parameters hop, dop and t
as well as the load.)
cycle
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.
2
EN
Operating instructions
40
13
31
14
22
32
11
31
12
22
32
Safety switch
EX-AZ 16
3. Mounting
3.1 General mounting instructions
Fitting is only authorised in a de-energised condition
The enclosure can be fixed by means of 2 mounting holes. The safety
switch is double insulated. The use of an earth wire is not authorised.
The component must be mechanically protected. The enclosure must
not be used as an end stop. Any mounting position. The mounting
position must be chosen so as to avoid the penetration of dirt in the
used holes. The unused openings must be sealed by means of slot
sealing plugs (AZ 15/16-1476-1 available as accessory) after fitting.
Please observe the recommendations regarding maximum
impact energy, actuating speed and tightening torque in the
technical data.
Mounting of the actuators: See mounting instructions actuators.
Please observe the relevant requirements of the standards
ISO 12100, ISO 14119 and ISO 14120.
The safety component and the actuator must be permanently
fitted to the safety guards and protected against displacement
by suitable measures (tamperproof screws, gluing, drilling,
pinning).
3.2 Dimensions
All measurements in mm.
EX-AZ 16 safety switch
18 8
29
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. Unused openings must be sealed with EX-certified
locking screws (included in delivery).
4.2 Contact variants
Contacts are shown with safety guard closed.
1 NO / 2 NC 3 NC
EX-AZ 16-12ZV(R)K-3D EX-AZ 16-03ZV(R)K-3D
21
21
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:
- The installation is executed according to the instructions
- The connection is executed correctly
- The cable is correctly executed and connected
- The safety component is not damaged
- Remove particles of dust and soiling
- Check cable entry and connections in de-energised condition
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:
1. Check the correct fixing of the actuator and the safety switchgear
2. Remove particles of dust and soiling
3. Check cable entry and connections in a de-energised condition
90
7
5,5
15,5
9
13
M16x1,5
8
52
30
14
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.
Avoid electrostaic charging. Clean with damp cloth.
Do not open the device when live.
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.
For explosion protection reasons, the component must be
exchanged after max. 1 million operations.
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.
EN
3
Operating instructions
Safety switch
7. EU Declaration of conformity
EU Declaration of conformity
EX-AZ 16
Original K.A. Schmersal GmbH & Co. KG
We hereby certify that the hereafter described components both in their basic design and construction conform
to the applicable European Directives.
Name of the component: EX-AZ 16
Type: See ordering code
Description of the component: Positive break position switch with
Relevant Directives: Machinery Directive
Applied standards: DIN EN 60947-5-1:2010,
Möddinghofe 30
42279 Wuppertal
Germany
Internet: www.schmersal.com
II 3D Ex tc IIIC T90°C Dc X
L
separate actuator for safety functions
Explosion Protection Directive (ATEX)
RoHS-Directive
DIN EN ISO 14119:2014,
EN 60079-0:2014,
EN 60079-31:2014
2006/42/EC
2014/34/EU
2011/65/EU
Person authorized for the compilation
of the technical documentation:
Place and date of issue: Wuppertal, 28 September 2016
EX-AZ16-C-EN
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
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
Authorised signature
Philip Schmersal
Managing Director
Phone: +49 - (0)2 02 - 64 74 - 0
Telefax: +49 - (0)2 02 - 64 74 - 1 00
E-Mail: info@schmersal.com
Internet: http://www.schmersal.com
4
EN
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