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European Safety Systems Ltd.

   Impress House, Mansell Road, Acton, London W3 7QH           www.e2s.com              Tel: +44 (0)208 743 8880 

Document No. D155-00-201-IS           Issue 3          28-11-22                       Sheet 3 of 5                                                                                            

 

6.2. 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  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, ensure 
no gap is visible between the cover and base of the beacon 
enclosure. Tighten the M3 grub screw. 

 

7)  Installation Requirements 

 

7.1. Installation Standards Compliance 

 

 

Attention: Disconnect from power 
source before installation or service 
to prevent electric shock. 

 

The  beacons  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.

 

 
 
 

7.2. 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).  
 

M3 x 6mm Grub Screw 

Lid Moulding

Figure 2 

O-Ring

 

 Supply 
Terminals 

E

L L

N

AC Unit 

Figure 3 

N

External Earth Stud        Internal Earth Stud 
 
 
 

S2 -

- +

+

DC Unit 

External Earth Stud        Internal Earth Stud       Supply Terminals 
 
 
 

 

Figure 4 

Summary of Contents for GNExB1X05

Page 1: ...1 for electrical ratings of each Unit Model 3 1 ATEX IECEx UKEX Ratings Standards EN IEC 60079 0 2018 IEC60079 0 2017 Ed 7 Explosive Atmospheres Equipment General Requirements EN60079 1 2014 IEC60079...

Page 2: ...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 110 C Equipment Category...

Page 3: ...al 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...

Page 4: ...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 ins...

Page 5: ...ints 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 respond to an input by lighting a beacon Spurious light output desp...

Page 6: ...TOLERANCES TO ISO1101 1983 LINEAR DIMENSIONAL TOLS ANGULAR DIMENSIONAL TOLS STANDARDS MOD No REASON INITIAL DATE ISSUE DATE APPROVED CHECKED DATE DATE DRAWN WEIGHT Kg SURFACE FINISH MATERIAL ALTERNAT...

Page 7: ...F ISSUE SHOWN ABOVE DRAWING TO BS8888 2000 GEOMETRIC TOLERANCES TO ISO1101 1983 LINEAR DIMENSIONAL TOLS ANGULAR DIMENSIONAL TOLS STANDARDS MOD No REASON INITIAL DATE ISSUE DATE APPROVED CHECKED DATE D...

Page 8: ...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 T4 T6 Gb II 2D Ex tb IIIC T80 C T138 C D...

Page 9: ...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 t...

Page 10: ...e Lane Eccleston Chester CH4 9JN UK Quality Assurance Notification Module D CSAE 22UKQAN0046 Provisions fulfilled by the equipment II 2G Ex db IIC T4 T6 Gb II 2D Ex tb IIIC T80 C T138 C Db IP6X Dust P...

Page 11: ...r 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 o...

Page 12: ...Page left Intentionally blank...

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