__________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)20 8743 8880
www.e2s.com Fax: +44 (0)20 8740 4200
Document No. IS4202 Issue: H 26-03-13 Sheet 1 of 3
INSTRUCTION & SERVICE MANUAL
E2xS121UL ALARM HORN SOUNDERS
For Use In Hazardous Locations
45 Tones 3 stage Alarm Horn Sounder
Automatic
Synchronisation
Volume
control
Type 4 / 4X / 13
Operating Temperature Range
-20ºC to +55ºC
7KA1
Unit Type No.
E2xS121UL
Input Voltages:
DC Units
10-30V or 48V
AC Units
120V or 230V 50/60Hz
Max. Operating Temperature / Code at +55ºC Ambient
Hazardous Location
Temperature Code
Class I, Division 2, Groups A, B, C, D
T3C (160ºC)
Class II, Division 2, Groups F and G
T6 (85ºC)
Class III, Divisions 1 and 2
T6 (85ºC)
Max. Operating Temperature / Code at +40ºC Ambient
Hazardous Location
Temperature Code
Class I, Division 2, Groups A, B, C, D
T4 (135ºC)
The equipment is suitable for use in the hazardous locations
listed above or non-hazardous locations only.
PRE-INSTALLATION
WARNING
- Before the E2xS121UL sounder is installed the
required tone and output volume must be set.
Note the units
are factory set to tone 2 (800/1000Hz alternating at 2Hz) and
maximum output
. If necessary the unit should be connected to
a suitable power supply in a safe area to determine what tone
pattern and output level is required
.
Flat Washer
Spring Washer
M4 Hex
Socket Screw
WARNING – DO NOT OPEN WHEN ENERGISED
CAUTION - DO NOT OPEN WHEN AN EXPLOSIVE GAS
OR DUST ATMOSPHERE IS PRESENT
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF
COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS I, II DIVISION 2.
MOUNTING
The E2xS121UL sounder must be mounted using the rotating
bracket as shown. If the cover has been removed to set the tone
or volume control ensure that it has been correctly replace
before the sounder is mounted.
18° Increments
Release nut to rotate
bracket.
WIRING INSTALLATION
The E2xS121UL sounder is provided with 2 off M20 x 1.5 cable
entries.
1 x ½” NPT adaptor and 1 x M20 stopping plug are provided.
Installation using Field Wiring Leads and Conduit
If the sounder is supplied pre-wired with flying leads, these are
colour coded and should be connected as shown in the diagram
below.
The conduit running from the supply to the sounder must
include an equipment grounding conductor that is at earth
potential to facilitate ground connection of the device. A number
of sounders can be connected in a chain to the same supply
using field installed wiring compartments that are appropriate for
the hazardous location, provided that the conductor at earth
potential can be readily connected to the ground lead on each
sounder in the chain.
Installation using Cable Glands without Field Wiring Leads
If the sounder is supplied without field wiring leads, the cable
connections are made into the terminal blocks on the electronic
PCB assembly. Terminal blocks are suitable for field wiring
(AWG 18-12). Strain relief has to be ensured by installation with
S
3
S
3
S
2
S
2
- -
+
+
Tone Selection
DIP Switch
Volume Control
Potentiometer
E2xS121UL DC Sounder
Tone Switch and Volume
Control Positions
G
G
Tone Selection
DIP Switch
Volume Control
Potentiometer
S3
S2
C
N N
L L
E E
E2xS121UL AC Sounder
Tone Switch and Volume
Control Positions
