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European Safety Systems Ltd.

   Impress House, Mansell Road, Acton, London W3 7QH           [email protected]              Tel: +44 (0)208 743 8880 

                                                                                                                                                             www.e-2-s.com             Fax: +44 (0)208 740 4200 
Document No. D201-00-031-IS           Issue 1          18-08-16                         Sheet 5 of 7                                                                                            

 

13.2   Stage Switching 

 

13.2.1  Units First Stage Tones 

 

Stage one (S1) Operation 

 

Simply connect the 
supply voltage to the + 
and - supply terminals, 
(see fig. 6). 

 

13.2.2   DC Units Second and Third Stage Tone 
Selection 

 

For units set up for –ve switching (default setting): 

 

Stage two (S2) Operation

 

 

Power +ve and –ve, link 
a -ve supply line to the 
S2 terminal.  
Header pins alters stage 
2 tone. 

Stage three (S3) Operation 

 

Power +ve and –ve, link 
a -ve supply line to the 
S3 terminal.  
Header pins alters stage 
3 tone. 

 

For units set up for +ve switching (refer to 13.3): 

 

Stage two (S2) Operation

 

 

Power +ve and –ve, link 
a +ve supply line to the 
S2 terminal.  
Header Pins alters stage 
2 tone. 

Stage three (S3) Operation 

 

Power +ve and –ve, link 
a +ve supply line to the 
S3 terminal.  
Header pins alters stage 
3 tone. 

 

+  -
   

  3

  S

to

p

1
23

S2

S3

Stop +ve

-v

e

 

Fig. 7 DC Terminals 

 

13.3  Stage Switching Polarity (DC Units 

Only) 

 

The BExH120D DC hootronic sounders have the facility to 
use ve or –ve switching to change the tone to the 
second and third stages. Negative switching is the default 
setting. For –ve switching connect the two headers on the 
pcb to the left-hand (marked –ve) and centre pins. For +ve 
switching connect the headers to the right hand (ve) 
and the centre pins. (Refer to Fig. 8) 

 

+

  -   2 

  3 
 S

to

p

1
23

S2

S3

Stop +v

e

-ve

 

Stage Headers Set for –ve Switching 

 

 

Stage Headers Set for +ve Switching 

 

 

Fig. 8 Stage Switching Polarity 

 

13.3 Stop 

Terminal 

 

The user can remotely activate and deactivate the 
BExH120D Hootronic DC sounder by switching a connection 
from the “Stop” terminal to the –ve or +ve supply lines, 
depending on which switching mode is being used +ve or –ve 
(see above) whilst the unit is powered. To achieve the “tail 
off” sound at switch off the unit must remain powered. 

 

Sound Headers 

 

C/- 

 

S2 

 

S3 

 

Stop 

Stage 
Headers 

C/- 

C/- 

Summary of Contents for BExH120D

Page 1: ...ate No KEMA 99ATEX6312X IECEx KEM 10 0003X 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 oper...

Page 2: ...The location of the hootronic sounder 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 un...

Page 3: ...topping 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 hootronic so...

Page 4: ...nd N supply terminals see fig 4 12 2 2 AC Units Second and Third Stage Tone Selection To select the second and third stage tones on the BExH120 AC hootronic sounder Stage two S2 Operation Power L and...

Page 5: ...Header Pins alters stage 2 tone Stage three S3 Operation Power ve and ve link a ve supply line to the S3 terminal Header pins alters stage 3 tone 2 3 S top 1 2 3 S2 S3 Stop ve ve Fig 7 DC Terminals 1...

Page 6: ...The sounders can then be switched to sound second and third stage alarm sounds The sounds are selected by pin headers on the pcb for both DC and AC units The sound table below shows the pin header pos...

Page 7: ...y 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 Explosiv...

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