E2S STExB2RT1 User manual

INSTRUCTION MANUAL (ATEX / IECEx & UKEx)
STExB2RT1
Flameproof Rotating Beacons
For use in Flammable Gas and Dust Atmospheres
E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-301-IS
Issue 4
21-10-22
Sheet 1 of 5
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:
Model No. STExB2RT1
Input Voltage: DC Units 12V or 24V
AC Units 115V or 230V
STExB2RT1 Codes:
Ex db IIC T5 Gb Ta -50°C to +40°C
Ex db IIC T4 Gb Ta -50°C to +70°C
Ex tb IIIC T125°C Db Ta -50°C to +70°C
Certificate No.
DEMKO 16 ATEX1466X
IECEx ULD 16.0017X
UL21UKEX2019X
Epsilon x
Equipment Group and
Category:
II 2G
II 2D
CE Marking
Notified Body No.
2813
UKCA Marking and
Notified Body No.
0518
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 40ºC ambient)
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
Maximum Surface Temperature for Dust Applications:
125ºC
IP Rating: IP6X to EN/IEC60079-0 and IP66 to EN/IEC60529
Equipment Category: 2G/D
Equipment Protection Level: Gb, Gc, Db, Dc
Ambient Temperature Range: -50°C to +70°C
STExB2RT1

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-301-IS
Issue 4
21-10-22
Sheet 2 of 5
3) Type Approval Standards
The equipment carries an EC & UKCA Type Examination
Certificate and IECEx Certificate of Conformity, and have been
certified to comply with the following standards:
EN60079-0:2018/ IEC60079-0:2017 (Ed 7):
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 beacon 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 STExB2RT1 beacon can only be mounted with the
beacon lens facing upwards or horizontal or positions in
between. Mounting the beacon with the lens facing downward
of horizontal is not permitted.
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 beacons should be made with due regard
to the area over which the warning signal must be visible. They
should only be fixed to services that can carry the weight of the
unit.
The STEx beacons should be securely bolted to a flat surface
using 9.0mm diameter bolt holes in the base of the unit. See
figure 1.
Fig. 1: Fixing Location for B2 Beacon
7) Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the beacon
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 beacon cover. Open the
enclosure by turning the beacon cover counterclockwise and
remove the cover, taking extreme care not to damage the
flameproof threads in the process (See figure 2).
Warning –High voltage may be present,
risk of electric shock. DO NOT open when
energised, disconnect power before
opening.
Warning –Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
Flashdome
Guard
Flameproof
Lid Moulding
Flameproof
Chamber
External
Earth Stud

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-301-IS
Issue 4
21-10-22
Sheet 3 of 5
Fig. 2: Accessing the Explosion proof Enclosure
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. Flameproof
threaded joints are not intended to be repaired. 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 beacon enclosure. Tighten the M4 grub screw.
8) Power Supply Selection
It is important that a suitable power supply is used to run the
beacons. The power supply selected must have the necessary
capacity to provide the input current to all of the beacons
The following table shows the input current taken by the
various beacons:
Model No.
Nom. Voltage
Max. Bulb
Wattage
Current
STExRT1DC012
12Vdc
20W
1.73A
STExRT1DC024
24Vdc
20W
970mA
STExRT1AC115
115/120Vac 50/60Hz
25W
216mA
STExRT1AC230
230Vac 50/60Hz
25W
111mA
A supply voltage variation of +/-10% outside the voltage range
is permissible.
Nominal current at nominal voltage and 1Hz flash rate
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 beacons 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 beacons connected to the
line.
For ambient temperatures over +40ºC the cable entry
temperature may exceed +70ºC or the cable branching point
temperature may exceed +80 ºC and therefore suitable heat
resisting cables and cable glands must be used as per table
below
STExRT1:
Ambient
Temp.
40ºC
45ºC
50ºC
55ºC
60ºC
65ºC
70ºC
Min. Rating
of cables
and cable
glands
70ºC
75ºC
80ºC
85ºC
90ºC
95ºC
100ºC
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 & UKEx 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 & UKEx 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 Beacon 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 & UKEx certified adapters.
M4 x 6mm
Grub Screw
Lid
Moulding
O-Ring

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-301-IS
Issue 4
21-10-22
Sheet 4 of 5
10) Earthing
Both AC and DC beacon 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 4mm²in 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.
Fig. 3: STExB2RT1 Entries and Terminal Block Location
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 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) AC Wiring
A 2-way terminal block is provided on the AC Beacon. There
are 1-off Live and 1-off Neutral terminals in total.
Refer to D199-06-301 for schematic diagram.
13) DC Wiring
A 2-way terminal block is provided on the DC Beacon. There
are 1-off +ve and 1-off -ve terminals.
Refer to D199-06-301 for schematic diagram.
13.1 End of Line Monitoring (DC Units)
On the STExB2RT1 DC beacons, dc reverse line monitoring
can be used if required. All DC units have a blocking diode
fitted in their supply input lines. An end of line monitoring diode
or an end of line monitoring resistor can be connected across
the +ve and –ve terminals in the flameproof chamber. If an end
of line resistor is used it must have a minimum resistance value
of 3k3 ohms and a minimum wattage of 0.5W or a minimum
resistance value of 500 ohms and a minimum wattage of 2W.
14) Interchangeable & Spare Parts
The beacon lens are interchangeable, contact European
Safety Systems Ltd for a replacement lens available in various
colours.
The guard is an integral part of the protection and must be
reassembled exactly the same way as it was disassembled.
To change the lens, unscrew the M5 socket head screws and
remove the M5 screws, M5 spring & flat washers.
Fig 7. Removal of Lens
Remove the guard and replace the old lens with the new lens.
Warning –Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
M20 x 1.5 Entries
External Earth
Stud
M5x16 Hex
Socket Screw

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-301-IS
Issue 4
21-10-22
Sheet 5 of 5
Fig 8. Changing of Lens
Fit the guard back on to the lens and casting, align the holes
of the guard, lens and casting. To reattach the lens, the fixings
MUST be in the order shown in figure 6.
Fig 9. Lens & Guard fixings order
15) 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.
Old Lens
New Lens
M5x16 Hex Socket Screw
M5 Spring Washer
M5 Plain Washer
Guard
Lens

2S
EUROPEAN SAFETY SYSTEMS LTD
IMPRESS HOUSE
MANSELL ROAD
ACTON
LONDON W3 7QH
WWW.E2S.COM
C
THIS DRAWING AND ANY INFORMATION OR DESCRIPTIVE
MATTER THEREIN IS COMMUNICATED IN CONFIDENCE AND
IS THE COPYRIGHT PROPERTY OF EUROPEAN SAFETY
SYSTEMS LTD. NEITHER THE WHOLE OR ANY EXTRACT MAY
BE DISCLOSED, LOANED, COPIED OR USED FOR
MANUFACTURING OR TENDERING PURPOSES WITHOUT THEIR
WRITTEN CONSENT.
EUROPEAN SAFETY SYSTEMS LTD.
AS PER LATEST DATE OF ISSUE SHOWN ABOVE
DRAWING TO BS8888:2000
GEOMETRIC TOLERANCES TO ISO1101:1983
LINEAR DIMENSIONAL TOLS
ANGULAR DIMENSIONAL TOLS
STANDARDS
MOD No. REASON - INITIAL - DATEISSUE
DATE
APPROVED
CHECKED DATE
DATE
DRAWN WEIGHT (Kg)
SURFACE FINISH
MATERIAL
ALTERNATIVE MATERIAL SHEETSCALE
TITLE
A3
IF IN DOUBT, ASK -
DO NOT SCALE
ALL DIMENSIONS IN MM
DRAWING NUMBER
A
B
C
D
E
F
G
109
G
F
E
78 6
5
D
C
134
2
A
B
D199-06-301
M.ABALOS
R.N.POTTS
R.N.POTTS
01/11/2022
OF
NTS 1 1
1INTRODUCTION
MA 01/11/2022
STExB2RT1 ROTATING BEACON
WIRING DIAGRAMS
STExB2RT1
+ve
-ve
01/11/2022
01/11/2022
STExB2RT1 DC BEACONS (20W MAX.) STExB2RT1 AC BEACONS (25W MAX.)
LIVE
NEUTRAL N
L
-
+








E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐070_Issue_G(STEx).docx‐Page1of2‐QAF_252_Issue_5

EUDeclarationofConformity
Manufacturer:  EuropeanSafetySystemsLtd.
ImpressHouse,MansellRoad,Acton
London,W37QH
UnitedKingdom

AuthorisedRepresentative:E2SWarnsignaltechnikUG
Charlottenstrasse45‐51
72764Reutlingen
Germany

EquipmentType:  STExS1,STExS2,STExL1,STExL2
STExB2X05,STExB2X10,STExB2X15,STExB2X21
STExB2LD2,STExB2RT1
STExC1X05
STExJ2
Directive2014/34/EU:EquipmentandProtectiveSystemsforuseinPotentiallyExplosiveAtmospheres(ATEX)
NotifiedBodyforEUtypeExamination(ModuleB):ULInternationalDemkoA/S
NotifiedBodyNo.:0539
Borupvang5A,2750Ballerup,Denmark
EU‐typeExaminationCertificate(ModuleB):DEMKO16ATEX1466X
NotifiedBodyforQualityAssuranceNotification/ConformitytoEU‐type
basedon
qualityassuranceoftheproductionprocess(ModuleD):
SiraCertificationService
NotifiedBodyNo.:2813
CSAGroupNetherlandsB.V,Utrechtseweg310,6812AR,Arnhem,Netherlands
QualityAssuranceNotification(ModuleD):SIRA05ATEXM342
Provisionsfulfilledbytheequipment:II2GExdbIICT6…T3Gb
II2DExtbIIICT82°C…T137°CDb
IP6XDustProtectiontoEN60079‐0/EN60079‐31
Standardsapplied:ENIEC60079‐0:2018
EN60079‐1:2014
EN60079‐31:2014
Directive2014/30/EU:ElectromagneticCompatibilityDirective(EMC)
Standardsapplied:EN61000‐6‐1:2007
EN61000‐6‐2:2005
EN61000‐6‐3:2007/A1:2011/AC:2012
EN61000‐6‐4:2007/A1:2011
Directive2011/65/EU:Restrictionoftheuseofcertainhazardoussubstancesinelectricalandelectronicequipment(RoHS)
Theproductandallthecomponentscontainedwithinitareinaccordancewiththerestrictionoftheuseofhazardoussubstancesinelectricalandelectronic
equipment,includingamendmentbyDirective2015/863/EU.

Regulation(EC)1907/2006:Registration,Evaluation,AuthorisationandRestrictionofChemicals(REACH)
Theproductandallthecomponentscontainedwithinitarefreefromsubstancesofveryhighconcern.
OtherStandardsandRegulations
EN60529:1991/A1:2000/A2:2013‐Degreesofprotectionprovidedbyenclosures(IPcode)–enclosureratedIP66








E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐070_Issue_G(STEx).docx‐Page2of2‐QAF_252_Issue_5




MartinStreetzDocumentNo.:DC‐070_Issue_G
QualityAssuranceManagerDateandPlaceofIssue:London,03/12/2021
EUDeclarationofConformity


OnbehalfofEuropeanSafetySystemsLtd.,Ideclarethat,onthedatetheequipmentaccompaniedbythisdeclarationisplacedonthemarket,theequipment
conformswithalltechnicalandregulatoryrequirementsoftheabovelisteddirectives,regulationsandstandards.

ThisDeclarationisissuedunderthesoleresponsibilityofthemanufacturer.





E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐100_Issue_A(STEx)‐Page1of2‐QAF_252_Issue_5

UKCADeclarationofConformity
Manufacturer:  EuropeanSafetySystemsLtd.
ImpressHouse,MansellRoad,Acton
London,W37QH
UnitedKingdom

EquipmentType:  STExS1,STExS2,STExL1,STExL2
STExB2X05,STExB2X10,STExB2X15,STExB2X21
STExB2LD2,STExB2RT1
STExC1X05
STExJ2
DirectiveUKSI2016:1107(asamendedbyUKSI2019:696)–Schedule3A,Part1:ProductorProtectiveSystemIntendedforuseinPotentiallyExplosiveAtmospheres
(UKCA)

NotifiedBodyforUKtypeExamination(ModuleB):ULInternational(UK)Ltd
NotifiedBodyNo.:0843
Unit1‐3HorizonKingslandBusinessPark,WadeRoad,
Basingstoke,HampshireRG248AHUK
UK‐typeExaminationCertificate(ModuleB):UL21UKEX2019X
NotifiedBodyforQualityAssuranceNotification/ConformitytoEU‐type
basedon
qualityassuranceoftheproductionprocess(ModuleD):
SiraCertificationService
NotifiedBodyNo.:0518
RakeLane,Eccleston,ChesterCH49JN,UK
QualityAssuranceNotification(ModuleD):CSAE22UKQAN0046
Provisionsfulfilledbytheequipment:II2GExdbIICT6…T3Gb
II2DExtbIIICT85°C…T137°CDb
IP6XDustProtectiontoEN60079‐0/EN60079‐31
Standardsapplied:ENIEC60079‐0:2018
EN60079‐1:2014
EN60079‐31:2014
Directive2014/30/EU:ElectromagneticCompatibilityDirective(EMC)
Standardsapplied:EN61000‐6‐1:2007
EN61000‐6‐2:2005
EN61000‐6‐3:2007/A1:2011/AC:2012
EN61000‐6‐4:2007/A1:2011
Directive2011/65/EU:Restrictionoftheuseofcertainhazardoussubstancesinelectricalandelectronicequipment(RoHS)
Theproductandallthecomponentscontainedwithinitareinaccordancewiththerestrictionoftheuseofhazardoussubstancesinelectricalandelectronic
equipment,includingamendmentbyDirective2015/863/EU.

Regulation(EC)1907/2006:Registration,Evaluation,AuthorisationandRestrictionofChemicals(REACH)
Theproductandallthecomponentscontainedwithinitarefreefromsubstancesofveryhighconcern.
OtherStandardsandRegulations
EN60529:1991/A1:2000/A2:2013‐Degreesofprotectionprovidedbyenclosures(IPcode)–enclosureratedIP66








E2STelephone:+44(0)2087438880Fax:+44(0)2087404200Email:[email protected]www.e2s.comDC‐100_Issue_A(STEx)‐Page2of2‐QAF_252_Issue_5




MartinStreetzDocumentNo.:DC‐100_Issue_A
QualityAssuranceManagerDateandPlaceofIssue:London,24/02/2022
UKCADeclarationofConformity


OnbehalfofEuropeanSafetySystemsLtd.,Ideclarethat,onthedatetheequipmentaccompaniedbythisdeclarationisplacedonthemarket,theequipment
conformswithalltechnicalandregulatoryrequirementsoftheabovelisteddirectives,regulationsandstandards.

ThisDeclarationisissuedunderthesoleresponsibilityofthemanufacturer.