E2S D2xS2F Series, Instruction Manual, Page: 4 / 20

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D252-00-001-IS Issue 1 21-12-2023 Sheet 4 of 7
Fig. 4 Earth Locations
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 4 and
notes below).
The unit has both a primary internal and secondary external earth
fixing point.
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 but at least a mini mum of 0.82mm2 / 18AWG in
size.
External earth connections can be made to the M5 earth stud (see
Fig. 4), using a ring crimp terminal to secure the earth conductor
to the earth stud. The external earth conductor should be at least
4mm
2 in size.
The external earth crimp ring should be located between the two
M5 plain washers provided and securely locked down with the M5
spring washer and M5 nut.
7.4 Cable Glands, Blanking Elements & Adapters
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 IP54 must be
maintained for installations in explosive gas atmospheres and
IP6X must be maintained for installations in explosive dust
atmospheres.
To maintain the ingress protection rating and mode of protection,
the cable entries must be fitted with suitably rated cable entry
and/or blanking devices during installation.
If entries are fitted with adaptors they must be suitably rated for
the application. Fitting of blanking elements into adaptors is not
permitted.
Adapters
The D2xS2 sounder 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.
For high ambient temperatures the cable entry temperature may
exceed 70ºC or the cable branching point temperature may exceed
80ºC and therefore suitable heat resisting cables and cable glands
must be used, with a rated service temperature at least as
stated below:
8) Settings
Following illustrations show the settings available for D2xS2 Alarm
Horn Sounders. See schematic diagram D252-06-001 for details.
8.1 Configuration
See Table 1 for product power supply and Sound Pressure Levels
(SPL).
Configuration for DC Units
Fig 5: DC PCBA.
Configuration for AC Units
Fig 6: AC PCBA .
8.2
Stage Switching Polarity (DC Units)
Ambient Temp. (°C) 55 60 65 70 75
D2xS2FDC024 / D2xS2HDC024
Min. Rating of cables and cable glands (°C) - 70 75 80 85
D2xS2FAC230 / D2xS2HAC230
Min. Rating of cables and cable glands (°C) 70 75 80 85 90
Internal Earth
Marked with G
External Earth
(default)
(default)