E2S STExL1R008 User manual

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: [phone]
www.e-2-s.com Fax: [phone]
Document No.D199-00-101-IS Issue 1 13-07-16 Sheet 1 of 4
INSTRUCTION MANUAL (ATEX / IECEx)
STExL1 & STExL2 Loudspeakers
For use in Flammable Gas and Dust Atmospheres
1) Warnings
DO NOT OPEN WHEN AN EXPLOSIVE
ATMOSPHERE IS PRESENT
POTENTIAL ELECTROSTATIC CHARGING
HAZARD
ALL ENTRIES M20 X 1.5 - IF TEMPERATURE
EXCEEDS 70°C AT ENTRY OR 80°C AT
BRANCHING POINT USE SUITABLE RATED
CABLE AND CABLE GLANDS
2) Rating & Marking Information
All units have a rating label, which carries the following
important information:-
Input Voltage:
Low Impedance Units 8Ωor 16Ω
Line Voltage Units 70Vline or 100V line
STExL1 Codes:
Ex db IIC Gb T6 Ta -50°C to +55°C
Ex db IIC Gb T5 Ta -50°C to +70°C
Ex tb IIIC Db T95°C Ta -50°C to +70°C
STExL2 Codes:
Ex db IIC Gb T6 Ta -50°C to +45°C
Ex db IIC Gb T5 Ta -50°C to +60°C
Ex db IIC Gb T4 Ta -50°C to +70°C
Ex tb IIIC Db T105°C Ta -50°C to +70°C
Certificate No. DEMKO 16 ATEX 1466X
IECEx ULD 16.0017X
The units can be installed in locations with the following
conditions:
Area Classification Gas:
Zone 1 Explosive gas air mixture likely to occur in
normal operation.
Zone 2
Explosive gas air mixture not likely to occur
in normal operation, and if it does, it will
only exist for a short time.
Gas Groupings:
Group IIA Propane
Group IIB Ethylene
Group IIC Hydrogen and Acetylene
Temperature Classification:
T1 450ºC
T2 300ºC
T3 200ºC
T4 135ºC
T5 100ºC (up to 60ºC ambient for STExL2
only)
T6 85ºC (up to 55ºC ambient for STExL1, up
to 45ºC ambient for STExL2 only)
Area Classification Dust:
Zone 21 Explosive dust air mixture likely to occur in
normal operation.
Zone 22
Explosive dust air mixture not likely to
occur in normal operation, and if it does, it
will only exist for a short time.
Dust Groupings:
Group IIIA Combustible Flyings
Group IIIB Non-conductive Dust
Group IIIC Conductive Dust
Ambient Temperature Range: -50°C to +70°C
IP Rating: IP66 to EN/IEC60079-0 and EN/IEC60529
Equipment Category: 2G/D
Equipment Protection Level: Gb, Gc, Db, Dc
Maximum Surface Temperature for Dust Applications:
95ºC (STExL1)
105ºC (STExL2)
0518
II 2G
II 2D
Epsilon x
Equipment Group and
Category:
CE Marking
Notified Body No.
STExL1 STExL2

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: [phone]
www.e-2-s.com Fax: [phone]
Document No. D199-00-101-IS Issue 1 13-07-16 Sheet 2 of 4
3) Type Approval Standards
The equipment carries an EC Type Examination Certificate
and IECEx Certificate of Conformity, and have been certified
to comply with the following standards:
EN60079-0:2012+A11:2013 / IEC60079-0:2011 (Ed 6):
Explosive Atmospheres - Equipment. General requirements
EN60079-1:2014 / IEC60079-1:2014 (Ed 7): Explosive
Atmospheres - Equipment protection by flameproof
enclosures "d"
EN 60079-31:2014 / IEC 60079-31:2013 (Ed 2): Explosive
Atmospheres - Equipment dust ignition protection by
enclosure "t"
4) Installation Requirements
The loudspeaker must only be installed by suitably qualified
personnel in accordance with the latest issues of the relevant
standards:
EN60079-14 / IEC60079-14: Explosive atmospheres -
Electrical installations design, selection and erection
EN60079-10-1 / IEC60079-10-1: Explosive atmospheres -
Classification of areas. Explosive gas atmospheres
EN60079-10-2 / IEC60079-10-2: Explosive atmospheres -
Classification of areas. Explosive dust atmospheres
The installation of the units must also be in accordance with
any local codes that may apply and should only be carried
out by a competent electrical engineer who has the
necessary training.
5) Special Conditions of Use
Repair of the flamepath / flameproof joints is not permitted.
The plastic horn is not anti-static and the metallic enclosure
has a non-conductive coating. These may generate an
ignition-capable level of electrostatic charges under certain
extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be
subjected to external conditions that might cause a build-up
of electrostatic charges on non-conducting surfaces.
Additionally, cleaning of the equipment should be done only
with a damp cloth.
6) Location and Mounting
The location of the loudspeaker should be made with due
regard to the area over which the warning signal must be
visible/audible. They should only be fixed to surfaces that can
carry the weight of the unit.
The STEx loudspeaker should be secured to any flat surface
using the three 7mm fixing holes. The angle can then be
adjusted as required but the mounting restrictions must be
observe. See Fig 1c. This can be achieved by loosening the
two large bracket screws in the side of the unit, which allow
adjustments in steps of 18°. The enclosure provides IP66
protection and is suitable for installation in exterior locations
providing it is positioned so that water cannot collect in the
horn, and the cable entry is sealed. See figure 1.
Fig 1a. Fixing Location for Small Horn
Fig 1b. Fixing Location for Large Horn
Fig. 1c Mounting Restrictions
7) Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the
loudspeaker it is necessary to remove the flameproof cover to
gain access to the flameproof chamber. To access the Ex d
chamber, loosen the M4 grub screw on the loudspeaker
cover. Open the enclosure by turning the loudspeaker cover
counterclockwise and remove the cover, taking extreme care
not to damage the flameproof threads in the process (See
figure 2).
Fig. 2 Accessing the Explosion proof Enclosure.
Warning – Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
Warning – High voltage may be present, risk
of electric shock. DO NOT open when
energised, disconnect power before
opening.
(Appropriate
cable glands to
be customer
supplied)
Flame
p
roof cove
r
Grub screw

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: [phone]
www.e-2-s.com Fax: [phone]
Document No. D199-00-101-IS Issue 1 13-07-16 Sheet 3 of 4
On completion of the installation, the flameproof threaded
joint should be inspected to ensure that they are clean and
that they have not been damaged during installation. Repair
of the flamepath / flameproof joints is not permitted. Also
check that the ‘O’ ring seal is in place. When fitting the
flameproof cover ensure the thread is engaged correctly.
Fully tighten the cover all the way, ensure no gap is visible
between the cover and base of the loudspeaker enclosure.
Tighten the M4 grub screw.
8) Power Supply Selection
It is important that a suitable power supply is used to run the
loudspeaker. The power supply selected must have the
necessary capacity to provide the input current to all of the
loudspeakers
The following table shows the input current taken by the
various loudspeakers:
A supply voltage variation of +/-10% outside the voltage
range is permissible.
Nominal current at nominal voltage
Max rated current at worst case supply voltage and flash rate.
9) Selection of Cable. Cable Glands, Blanking
Elements & Adapters
When selecting the cable size, consideration must be given
to the input current that each unit draws (see table above),
the number of loudspeaker on the line and the length of the
cable runs. The cable size selected must have the necessary
capacity to provide the input current to all of the loudspeakers
connected to the line.
For ambient temperatures over +40ºC the cable entry
temperature may exceed +70ºC and therefore suitable heat
resisting cables and cable glands must be used as per table
below
STExL1:
Ambient
Temp. 45ºC 50ºC 55ºC 60ºC 65ºC 70ºC
Min. Rating
of cables
and cable
glands
70ºC 75ºC 80ºC 85ºC 90ºC 95ºC
STExL2:
Ambient
Temp. 40ºC 45ºC 50ºC 55ºC 60ºC 65ºC 70ºC
Min. Rating
of cables
and cable
glands
75ºC 80ºC 85ºC 90ºC 95ºC 100ºC 105ºC
The cable entries have an M20 x 1.5 – 6H entry thread. If the
installation is made using cable glands, only suitably rated
and ATEX / IECEx certified cable glands must be used. They
must be suitable for the type of cable being used and also
meet the requirements of the current installation standards
EN 60079-14 / IEC60079-14.
Any unused cable entries must be closed with suitably rated
and ATEX / IECEx certified blanking plugs.
If the installation is made using conduit, openings must have
a sealing fitting connected as close as practical to the wall of
the enclosure, but in no case more than the size of the
conduit or 50mm, whichever is the lesser.
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable glands
or blanking plugs. A minimum ingress protection rating of
IP6X must be maintained for installations in explosive dust
atmospheres.
For combustible dust applications,¬ the cable entry device
and blanking elements shall be in type of explosion protection
and shall have an IP 6X rating.
The STEx loudspeaker range can be supplied with the
following types of adapters:
M20 to ½” NPT
M20 to ¾” NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted
onto adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and ATEX /
IECEx certified adapters.
10) Earthing
Both AC and DC loudspeaker units must be connected to an
earth according to EN/IEC 60079/14. The units are provided
with internal and external earth terminals which are both
located on the terminal chamber section of the unit
Internal earthing connections should be made to the Internal
Earth terminal in the base of the housing using a ring crimp
terminal to secure the earth conductor under the earth clamp.
The earth conductor should be at least equal in size and
rating to the incoming power conductors.
External earthing connections should be made to the M5
earth stud, using a ring crimp terminal to secure the earth
conductor to the earth stud. The external earth conductor
should be at least 4mm2 in size.
11) Cable Connections
Electrical connections are to be made into the terminal blocks
on the PCBA located in the flameproof enclosure. See
section 7 of this manual for access to the flameproof
enclosure.
Wires having a cross sectional area between 0.5 mm² to
2.5mm² can be connected to each terminal way. If an input
and output wire is required the 2-off Live/Neutral or +/-
terminals can be used. If fitting 2-off wires to one terminal
way the sum of the 2-off wires must be a maximum cross
sectional area of 2.5mm². Strip wires to 8mm. Wires may also
be fitted using ferrules. Terminal screws need to be tightened
down with a tightening torque of 0.45 Nm / 5 Lb-in. When
connecting wires to the terminals great care should be taken
to dress the wires so that when the cover is inserted into the
Model No. Input Power
(Watts) Max. I/P Volts
STExL1R008 8Ohm 15 10.95
STExL1R016 16Ohm 15 15.49
STExL1V070 70V Line 15 70
STExL1V100 100V Line 15 100
STExL2R008 8Ohm 25 14.14
STExL2R016 16Ohm 25 20
STExL2V070 70V Line 25 70
STExL2V100 100V Line 25 100

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: [phone]
www.e-2-s.com Fax: [phone]
Document No. D199-00-101-IS Issue 1 13-07-16 Sheet 4 of 4
chamber the wires do not exert excess pressure on the
terminal blocks. This is particularly important when using
cables with large cross sectional areas such as 2.5mm².
12) 70V & 100V Line In Wiring
Fig. 3 Line in Terminals
The cable connections are made into the terminal blocks on
the PCB assembly located in the explosion proof enclosure.
See section 7 of this manual for access to the explosion proof
enclosure. The 70V & 100V Line loudspeakers are fitted with
a five way terminal block. Terminal A is common and one of
the other terminals B, C, D or E should be selected
depending on what output level is required (see table below).
Terminals STExL2 (25W) STExL1 (15W)
A - B 25W 15W
A - C 12.5W 7.5W
A - D 6W 3W
A - E 2W 1W
A single wire with a cross sectional area of up to 2.5mm² /
AWG14 can be connected to each terminal way or if an input
and output wire is required two wires can be connected to
each terminal way when crimped with a ferrule. If more than
one wire is fitted into a terminal a ferrule should be used to
secure the wires. When connecting wires to the terminals
great care should be taken to dress the wire so that when the
cover is inserted into the chamber the wires do not exert
excess pressure on the terminal blocks.
13) Low Impedance Wiring
Fig. 4 Low Impedance Terminals
STExL2 and STExL1 8Ωand 16Ωlow impedance
loudspeakers have dual input terminals on the PCB assembly
for input and output wiring. A cable of up to 4.0mm² can be
connected to each terminal. If DC line monitoring is used cut
the link on the board (see Fig. 4).
14) Maintenance, Overhaul and Repair
Maintenance, repair and overhaul of the equipment should
only be carried out by suitably qualified personnel in
accordance with the current relevant standards:
EN60079-19/IEC60079-19
Explosive atmospheres – Equipment repair, overhaul and
reclamation
EN 60079-17/IEC60079-17
Explosive atmospheres – Electrical installations inspection
and maintenance
Units must not be opened while an explosive atmosphere is
present.
If opening the unit during maintenance operations a clean
environment must be maintained and any dust layer removed
prior to opening the unit.
Flameproof threaded joints and cemented joints are not
permitted to be repaired.
Electrostatic charging hazard - Clean only with a damp cloth.
A
B
C
D
E
Internal Earth
Terminal
Internal Earth
Terminal
DC Line
Monitoring
Link
+ + - -