e2S GNExB1X05 Xenon Strobe Beacon Instruction Manual

e2S GNExB1X05 Xenon Strobe Beacon

Specifications

• Model: GNExB1X05
• Application: Flameproof Xenon Beacons for use in Flammable Gas and Dust Atmospheres

Product Usage Instructions

Electrical Ratings

The table below shows the electrical ratings for different models of the GNExB1X05 beacons:

Note:

Ensure the power supply can provide the maximum current required for all beacons and check cable size, length, and quantity of beacons on each circuit.

Warnings

• Do not open when an explosive atmosphere is present.
• Use suitable rated cable and cable glands at branching points.

Zones, Gas Group, Category, and Temperature Classification

The GNExB1X05 beacons can be installed in the following areas:

operation.

Gas Groupings:

• Group IIA: Propane
• Group IIB: Ethylene
• Group IIC: Hydrogen and Acetylene

Temperature Classification for Gas Applications:

• T1
• T2

FAQ

Q: Can the GNExB1X05 beacons be used in Zone 2 areas?

• A: Yes, the GNExB1X05 beacons are suitable for use in Zone 2 areas where an explosive gas-air mixture is not likely to occur in normal operation.

Q: What should I do if the beacon’s current exceeds the maximum rating?

• A: If the beacon’s current exceeds the maximum rating, review the power supply capacity and ensure it meets the requirements of all connected beacons.

 Product Table

**Standard| ****Model| Nom. Voltage| ****Voltage Range| Nom. Operating Current*| Max Current*
---|---|---|---|---|---
ATEX / IECEx / UKEX| GNExB1X05DC012| 12Vdc| 10-14Vdc| 437mA| 587mA
GNExB1X05DC024| 24Vdc| 20-28Vdc| 254mA| 266mA
GNExB1X05DC048| 48Vdc| 42-54Vdc| 158mA| 175mA
GNExB1X05AC115| 115Vac| 110-125Vac 50/60Hz| 95mA| 121mA
GNExB1X05AC230| 230Vac| 220-240Vac 50/60Hz| 54mA| 88mA
Rate at 1Hz

**** 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.

Warnings

• POTENTIAL ELECTROSTATIC CHARGING HAZARD
• DO NOT OPEN WHEN AN EXPLOSIVE
• ATMOSPHERE IS PRESENT
• ALL ENTRIES M20 X 1.5
• IF TEMPERATURE EXCEEDS 70ºC AT ENTRY OR 80ºC AT BRANCHING POINT USE SUITABLE RATED CABLE AND CABLE GLANDS

Marking & Rating 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

ATEX / IECEx / UKEX Ratings

Standards

• EN IEC 60079-0:2018 / 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”

Ratings
GNExB2:| Ex db IIC Gb T6 Ta -50°C to +40°C
X05DC012| Ex db IIC Gb T5 Ta -50°C to +55°C
X05DC024

X05DC048 X05AC115

| Ex db IIC Gb T4 Ta -50°C to +70°C

Ex tb IIIC Db T110°C Ta -50°C to +70°C

X05AC230|

• Certificate No. DEMKO 15ATEX1448X
  • IECEx UL15.0003X
  • UL21UKEX2136X

Zones, Gas Group, Category and Temperature Classification

The units can be installed in locations with the following conditions:

Area Classification

Zone 1| An explosive gas-air mixture is likely to occur in normal operation.
Zone 2| An explosive gas-air mixture is not likely to occur in normal operation, and if it does, it will only exist for a short time.
Zone 21| Explosive dust air mixture is likely to occur in normal operation.
Zone 22| An explosive dust air mixture is 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 (Up to 55ºC Ambient)
T6| 85ºC (Up to 40ºC Ambient)
Dust Groupings (ATEX / IECEx / UKEX only)
Group IIIA| Combustible Flyings
Group IIIB| Non-conductive Dust
Group IIIC| Conductive Dust
Maximum Surface Temperature for Dust Applications (ATEX / IECEx / UKEX only)
GNExB2X05| 110ºC
Equipment Category
2G / 2D
Ambient Temperature Range
-50°C to +70°C

IP Rating

• IP6X to EN/IEC60079-0 IP66 to EN60529

Special Conditions for Safe Use

• The enclosure is non-conducting and 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.
• The stainless steel beacon guard is not earthed and may generate an ignition-capable level of electrostatic charges. It has a capacitance of 10pF according to EN/IEC60079-0, clause 7.5.
• The flash dome guard must not be removed from the unit at any time whilst in service.
• All entries must be fitted with a suitable seal at the interface with the enclosure.

Product Mounting and Access

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 beacons should be securely bolted to a suitable surface using the 7mm diameter bolt holes in the base of the unit (see Figure 1).

Access to the Flameproof Enclosure

• 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 M3 grub screw on the beacon cover.
• Open the enclosure by turning the beacon cover counter-clockwise and remove the cover taking extreme care not to damage the flameproof threads in the process (see Figure 2).
• On completion of the installation, the flameproof threaded joints 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.
• Ensure that the ‘O’ ring seal is in place and undamaged.
• When fitting the flameproof cover ensure the thread is engaged correctly.
• Fully tighten the cover all the way, and ensure no gap is visible between the cover and the base of the beacon enclosure.
• Tighten the M3 grub screw.

Installation Requirements

Installation Standards Compliance

• Attention: Disconnect from the power source before installation or service to prevent electric shock.
• The beacons must only be installed by suitably qualified personnel under 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 under any local codes that may apply and should only be carried out by a competent electrical engineer who has the necessary training.

Cable Selection and Connections

• When selecting the cable size, consideration must be given to the input current that each unit draws, 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. A five-way terminal block is provided on both AC and DC beacons.
• There are two live, two neutral, and an Earth terminal for the input and output wiring on AC units. DC units have two +ve, two -ve, and an S2 terminal for the input and output wiring.
• Wires having a cross-sectional area of up 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.
• 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

• Please note that for AC supply voltage product versions the Earth terminal on the PCBA does not provide an earth connection to the product enclosure.
• The enclosure must be independently earthed using either the external or internal earth fixing point, (see Fig 3 and notes below).
• Both AC and DC beacon units can be connected to an earth. The units are provided with internal and external earth terminals which are both located on the terminal chamber section of the unit (see Figures 3 and 4).
• Internal earthing connections on AC units should be made to the Internal Earth terminal on the PCBA. 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 M4 earth stud, using a ring crimp terminal to secure the earth conductor to the earth stud between the two M4 stainless steel flat washers, then reassemble the M4 spring washer and tighten the M4 nut to ensure that the cable lug is secured against loosening and twisting. The external earth conductor should be at least 4mm2 in size.

Cable Glands, Blanking Elements, and Adapters

• The cable entry temperature may exceed +70ºC or the cable branching point temperature may exceed 80ºC at high ambient temperatures and therefore suitable heat-resisting cables and cable glands must be used, rated 80°C for ambient temperatures of 55°C and rated 95°C for ambient temperatures of 70°C.

Cable Glands

• The cable gland entries have an M20 x 1.5 entry thread. Only suitably rated and ATEX / IECEx / UKEX-certified cable glands which must be suitable for the type of cable being used.

Blanking Plugs

• When only one cable entry is used the other entry must be closed with suitably rated and ATEX / IECEx / UKEX-certified blanking plugs.
• For combustible dust applications, the cable entry device and blanking elements shall be in the type of explosion protection and shall have an IP 6X rating.

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.

Adapters

• The GNEx 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.

Flash Patterns (DC Units Only)

• Warning – high-intensity light source. Avoid looking directly at the light source for extended periods.
• The GNExB1X05 DC beacons can produce three different flash patterns as listed below. The flash patterns are set internally by the selection of pin headers.
• The flash pattern set can be changed externally to produce a second stage by connecting terminal S2 to –ve supply line whilst powering the +ve and –ve supply terminals.
• The AC Beacons only flash at 1Hz.

Stage 1 Stage 2

• 1Hz Double Strike
• 1.5Hz Double Strike
• Double Strike Double Strike

Synchronized Operation

• All GNExBG1X05 beacons that are connected to the same supply line will have a synchronized flash rate of one flash every second.
• To ensure that the units will be synchronised check that the pin header is set to 1Hz (see Figure 5).

End of Line Monitoring (DC Units)

• On the GNExBG1X05 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.

Maintenance, Overhaul and Repair

• Maintenance, repair, and overhaul of the equipment should only be carried out by suitably qualified personnel under the current relevant standards:
• EN60079-19/IEC60079-19 Explosive atmospheres – Equipment repair, overhaul, and reclamation
• EN60079-17/IEC60079-17 Explosive atmospheres – Electrical installations inspection and maintenance
• Units must not be opened while an explosive atmosphere is present.
• Electrostatic charging hazard – Clean only with a damp cloth.

1SIL 2 Reliability Data

Reliability and Functional safety IEC/EN61508 which has been assessed and is considered suitable for use in low-demand safety functions:

1. Random Hardware Failures and Architectural constraints (route 2H).
2. As an unvoted item (i.e. hardware fault tolerance of 0) at SIL 2.
   • The product was assessed against failure modes:
   • Failure to respond to an input by lighting a beacon.
   • Spurious light output despite no input.
3. When employing the device in a SIL2-compliant system the user should ensure frequent or continuous automatic monitoring of continuity.

DC XENON GNExB1X05 UNITS

Line Monitoring

• Power: +ve & -ve
• OPTIONAL LINE MONITORING RESISTOR, CUSTOMER SUPPLIED, RECOMMENDED MINIMUM VALUES: 500Ω MIN, 2W MIN OR 3K3Ω MIN, 0.5W MIN

AC XENON GNExB1 X05 UNITS

• Power: Live & Neutral

EU Declaration of Conformity

• Manufacturer: European Safety Systems Ltd.
  • Impress House, Mansell Road, Acton
  • London, W3 7QH
  • United Kingdom
• Authorized Representative: E2S Warnsignaltechnik UG
  • Charlottenstrasse 45‐51
  • 72764 Reutlingen
  • Germany
• Equipment Type: GNExB1X05
  • GNExB2X05, GNExB2X10, GNExB2X15, GNExB2X21
  • GNExB2LD2
  • GNExJ2
• 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.

UKCA Declaration of Conformity

• Manufacturer: European Safety Systems Ltd.
  • Impress House, Mansell Road, Acton
  • London, W3 7QH
  • United Kingdom
• Equipment Type: GNExB1X05
  • GNExB2X05, GNExB2X10, GNExB2X15, GNExB2X21
  • GNExB2LD2
  • GNExJ2
• 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.
• Document No.: DC-098_Issue_A
• Quality Assurance Manager Date and Place of Issue: London, 24/02/2022
• E2S Telephone: +44 (0)20 8743 8880 Fax: +44 (0)20 8740 4200 Email: sales@e2s.com
• www.e2s.com
• DC-098_Issue_A (GNExB, GNExJ UKCA).docx
• QAF_252_Issue_5

References

• E2S Warning Signals - Signalling devices for hazardous areas, fire and industrial environments, marine, onshore and offshore applications and wide area sirens and alarms.

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