E2S STExB2LD2 User manual

INSTRUCTION MANUAL
STExB2LD2
Flameproof LED Beacons
For use in Flammable Gas and Dust Atmospheres
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 1 of 6
STExB2LD2
1) Product Table
Standard
Model
Nom. Voltage
Voltage Range
Nom. Operating
Current*
Max Current
ATEX /
IECEx /
NEC /
CEC
GNExB2LD2DC024
24Vdc
18-54Vdc1
18-30Vdc2
230mA
500mA
GNExB2LD2AC115
115Vac
110-120Vac 50/60Hz
95mA
180mA
GNExB2LD2AC230
230Vac
220-240Vac 50/60Hz
50mA
100mA
*Rate at 1Hz
1ATEX / IECEx Conformity
2NEC / CEC Conformity
The table shows the input current taken by the various beacons.
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.
Table 1: Electrical Ratings
Ensure the system power supply is capable of providing the maximum current required for all beacons. Review associated cable size,
length and quantity of beacons on each circuit.
2) Warnings
•POTENTIAL ELECTROSTATIC CHARGING HAZARD.
•DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT.
•ALL ENTRIES M20 X 1.5MM.
•USE SUITABLE RATED CABLES AND CABLE GLANDS
IF TEMPERATURE EXCEEDS AS PER STANDARDS
INDICATIONS BELOW.
FOR ATEX / IECEx STANDARDS:
70ºC AT ENTRY OR 80ºC AT BRANCHING POINT.
FOR NEC / CEC STANDARDS:
60ºC AT ENTRY OR 60ºC AT BRANCHING POINT.
3) Rating & Marking Information
All units have a rating label, which carries the following
important information:
•Unit Model.
•Voltage Range
•Nominal Voltage
•Max. Current
See Table 1 for electrical ratings of each Unit Model.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 2 of 6
3.1. ATEX / IECEx Ratings
Standards
EN60079-0:2012+A1:2013 / 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"
BS EN 60079-31:2014 / IEC 60079-31:2013 (Ed 2):
Explosive Atmospheres - Equipment dust ignition protection by
enclosure "t"
Ratings
STExB2:
LD2DC024
LD2AC115
LD2AC230
Ex db IIC T5 Gb Ta -50°C to +70°C
Ex db IIC T6 Gb Ta -50°C to +65°C
Ex tb IIIC T85°C Db Ta -50°C to +70°C
Certificate No.
DEMKO 16 ATEX 1466X
IECEx ULD 16.0017X
Epsilon x, Equipment
Group and Category:
II 2G
II 2D
CE Marking
Notified Body No.
2813
3.2. NEC / CEC Ratings
All models are approved for use as Visual Signal Device for
use as General Signalling:
UL1638A & CSA C22.2 No 205-17
NEC Class / Zone Ratings US Codes
Standards
UL 60079-0 (Ed. 7) 04/15/2020
Explosive Atmospheres - Part 0: Equipment - General
Requirements
UL 60079-1 (Ed. 7) 2015
Explosive Atmospheres - Part 1: Equipment Protection by
Flameproof Enclosures 'd'
Ratings
STExB2:
LD2DC024
LD2AC115
LD2AC230
Class 1 Zone 1 AEx db IIC T5 Gb Ta -50°C to +70°C
Class 1 Zone 1 AEx db IIC T6 Gb Ta -50°C to +65°C
Installation must be carried out in compliance with the National
Electric Code.
CEC Class / Zone Ratings Canada Codes
Standards
CAN/CSA C22.2 No. 60079-0 (Ed. 4) 02/2019
Explosive Atmospheres - Part 0: Equipment - General
Requirements
CAN/CSA C22.2 No. 60079-1 (Ed. 3) 2016
Electrical Apparatus for Explosive Gas Atmospheres - Part 1:
Flameproof Enclosures 'd'
Ratings
STExB2:
LD2DC024
LD2AC115
LD2AC230
Ex db IIC T5 Gb Ta -50°C to +70°C
Ex db IIC T6 Gb Ta -50°C to +65°C
Installation must be carried out in compliance with the
Canadian Electric Code
NEC & CEC Class / Division Ratings for US / Canada,
USL CNL
Standards
UL1638A (Ed. 1) 2016
Standard for Visual Signal Appliances for General Signalling
Use
CSA C22.2 No. 205-17 (Ed. 3) 2017
Signal Equipment
Ratings
STExB2:
LD2DC024
LD2AC115
LD2AC230
Class I Div 2 Group ABCD T5 Ta -50°C to +70°C
Class I Div 2 Group ABCD T6 Ta -50°C to +65°C
The certification approval has validated continuous use up to
38°C ambient and are for transient use up to 70°C ambient.
Installation must be carried out in compliance with the National
Electric Code / Canadian Electric Code.
4) Zones, Gas Group, Category, IP Rating and
Temperature Classification
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.
Zone 21
(ATEX / IECEx only)
Explosive dust air mixture likely to occur in
normal operation.
Zone 22
(ATEX / IECEx only)
Explosive dust 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 for Gas Applications
T1
450ºC
T2
300ºC
T3
200ºC
T4
135ºC
T5
100ºC
T6
85ºC (up to 65ºC ambient)

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 3 of 6
Dust Groupings
(ATEX / IECEx only)
Group IIIA
Combustible Flyings
Group IIIB
Non-conductive Dust
Group IIIC
Conductive Dust
Maximum Surface Temperature for Dust Applications
(ATEX / IECEx only)
GNExB2:
LD2DC024
LD2AC115
LD2AC230
85ºC
Equipment Category
2G / 2D
Equipment Level Protection
Gb, Gc, Db, Dc
Ambient Temperature Range
-50°C to +70°C
IP Rating
IP6X to EN/IEC60079-0
IP66 to EN60529
5) Special Conditions for Safe Use
Repair of the flame path / flameproof joints is not permitted.
Figure 1: Flame Path.
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.
6) Product Mounting and Access
6.1. 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.
STExB2X21 models shall not be mounted with the lamp down.
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 2.
Figure 2: Fixing Location for B2 Beacon.
6.2. Access to the Flameproof Enclosure
Warning –Hot surfaces. External
surfaces and internal components
may be hot after operation, take
care when handling the equipment.
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 3).
Figure 3: 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.
Repair of the flame path / flameproof joints is not permitted.
Ensure 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.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 4 of 6
7) Installation Requirements
7.1. Installation Standards Compliance
Warning –High voltage may be
present, risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
The beacon must only be installed by suitably qualified
personnel in accordance with the latest issues of the relevant
standards.
ATEX / IECEx installation 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.
NEC Class / Zone, CEC Class / Zone, and NEC & CEC Class
/ Division installation standards:
National Electrical Code, NFPA 70 or CSA 22.1 Canadian
Electrical Code, Part I, Safety Standard for Electrical
Installations, Section 32.
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.
7.2. Cable Selection and Connections
When selecting the cable size, consideration must be given to
the input current that each unit draws (see table 1), 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.
Electrical connections are to be made into the terminal blocks
on the PCBA, using solid wire 0.5-4mm2 / AWG 20-12 or
stranded wire, sizes 0.5-2.5mm2 / AWG 24-14. Wire insulation
needs to be stripped 8mm. Wires may be fitted securely with
crimped ferrules.
Figure 4: Wire Preparation.
Terminal screws need to be tightened down with a tightening
torque of 0.45 Nm / 5 Lb-in. A 6-way terminal blocks is provided
on the AC Beacon: 2-off Live, 2-off Neutral terminals and 2-off
Earth terminals in total. A 6-way terminal blocks is provided on
the DC Beacon: 2-off +ve, 2-off -ve terminals, 1-off S2 (Stage
2) and 1-off S3 (Stage 3).
Figure 5: STExB2 Entries and Terminal Block Location.
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.
Earthing
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.
7.3. Cable Glands, Blanking Elements & Adapters
For high ambient temperatures, the cable entry and the cable
branching point temperatures may exceed the following
temperatures:
•For ATEX / IECEx: 70ºC at entry or 80ºC at branching point.
•For NEC / CEC: 60ºC at entry or 60ºC at branching point.
Therefore, suitable heat resisting cables and cable glands
must be used, with a rated service temperature at least as
stated in the table below:
Max Ambient Temperature (ºC)
ATEX / IECEx / NEC / CEC Approved
Model
GNExB2
25
30
35
40
45
50
55
60
65
70
LD2DC024
LD2AC115
LD2AC230
65
70
75
80
85
90
95
100
105
110
Table 2: Min. Ratings of Cables & Cable Glands.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 5 of 6
Cable Glands
The cable gland entries have an M20 x 1.5 entry thread. Only
use suitably rated and certified cable glands, as per type of
approval, which must be suitable for the type of cable being
used and also meet the requirements of the current flameproof
installation standards (see section 7.1).
Blanking Plugs
When only one cable entry is used the other entries must be
closed with suitably rated and certified blanking plugs as per
type of approval.
Any unused cable entries must be closed with suitably rated
and certified blanking plugs.
Ingress Protection
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
For use in Class I Division II locations, in order to maintain the
db type protection, flameproof conduit seals and/or cable
glands must be used.
Adapters
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 as per the
applicable standards.
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.
8) Flash Pattern Settings
The GNExB2 beacon can produce different flash patterns as
shown in Table 2. The flash patterns are selected by operation
of the flash setting DIP switch on the PCB, Fig 6.
Figure 6: DIP Switch Location.
Switch
Setting
(123456)
S1 Mode
S2 Mode
S3 Mode
000000
Steady
High Power
Flashing
1Hz
Flashing
Triple Strike
000001
Steady
Low Power
Flashing
1Hz
Flashing
Triple Strike
100000
Flashing
1Hz
Flashing
Double Strike
Flashing
Triple Strike
101000
Flashing
1.5Hz
Flashing
2Hz
Flashing
Double Strike
010000
Flashing
2Hz
Flashing
Triple Strike
Flashing
Triple Strike
110000
Flashing
Double Strike
Steady
High Power
Flashing
Triple Strike
001000
Flashing
Triple Strike
Flashing
2Hz
Flashing
Double Strike
Table 2: Switch Positions for Flash Patterns
8.1. Synchronised Operation
All STExB2LD2 beacons that are connected to the same
supply line will have a synchronised flash rate at one flash
every second. To ensure that the units will be synchronised
check that the DIP switch is set to1 Hz (see Figure 6).
9) End of Line Monitoring (DC Units)
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.
10) Interchangeable & Spare Parts
The beacon lens is interchangeable, contact European Safety
Systems Ltd for a replacement lens available in various
colours.
Warning –Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
Warning –high-intensity light source. Avoid
looking directly at the light source for
extended periods of time.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D199-00-401-IS
Issue 4
04-01-21
Sheet 6 of 6
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.
Figure 7: Removal of Lens.
Remove the guard and replace the old lens with the new lens.
Figure 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 9.
Figure 9: Lens & Guard Fixings Order.
11) 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.
Potential electrostatic charging hazard - Clean only with a
damp cloth.

warning signals
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
D199-06-401
R.N.POTTS OF
STExB2 LD2 BEACON
NTS 1 1
A
B
INTRODUCTION
RSR - 03/07/19
STExB2 LD2
R.N.POTTS
R.S.RAIT 03/07/19
WIRING DIAGRAMS
Stage 3
R1
-
-
S2
S3
DC LED STExB2LD2 UNITS
Line Monitoring
Power: +ve & -ve
OPTIONAL LINE MONITORING RESISTOR, CUSTOMER SUPPLIED,
RECOMMENDED MINIMUM VALUES:
R1
500Ω MIN, 2W MIN OR 3K3Ω MIN, 0.5W MIN
+
+
Stage 2
-ve IN
-ve OUT
+ve OUT
+ve IN L
L
Neutral IN
Neutral OUT
Live OUT
Live IN
Earth
Earth
N
N
E
E
AC LED STExB2LD2 UNITS
Power: Live & Neutral
03/07/19
03/07/19
STAGE 2 & 3 OPERATION SHOWN
DC EOL RESISTOR SHOWN
DAH 17/02/19
FORMAT UPDATE
MA - 03/12/2021
C

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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
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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
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MartinStreetzDocumentNo.:DC‐070_Issue_G
QualityAssuranceManagerDateandPlaceofIssue:London,03/12/2021
EUDeclarationofConformity
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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.
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ThisDeclarationisissuedunderthesoleresponsibilityofthemanufacturer.