E2S D1xS1RDC024-S User manual

INSTRUCTION MANUAL
D1xS1FDC024-S & D1xS1RDC024-S
Alarm Horn Sounder –SIL2
Class I, Zone 1, 2, 21 & 22
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D190-00-651-IS
Issue 2
06-03-2023
Sheet 1 of 15
D1xS1FDC024-S
D1xS1RDC024-S
1) Product Table
Model Number
Nominal
Input Voltage
Nominal
Input Current
Voltage Range
Sound
Pressure Level
dB(A)
Max*
Nom.†
D1xS1FDC024-S
24Vdc
185mA
20-28Vdc
115
110
D1xS1RDC024-S
24Vdc
185mA
20-28Vdc
110
105
*Max = Tone 4
†Nom. = Tone 44
The table shows the input current taken by the various sounders.
The current levels shown above are for the 440Hz Continuous tone @ nominal input voltage.
Nominal current at nominal voltage.
Table 1: Electrical Ratings.
2) Warnings
CAUTION
TO REDUCE THE RISK OF IGNITION OF HAZARDOUS
ATMOSPHERES:
DISCONNECT FROM SUPPLY BEFORE OPENING.
KEEP TIGHTLY CLOSED WHEN IN OPERATION.
WARNING
FIT SEALING FITTING IN CONDUIT RUNS WITHIN 18 INCHES
FROM ENCLOSURE.
EQUIPMENT MUST NOT BE INSTALLED WITH THE HORN
FACING UPWARDS OF HORIZONTAL
DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT
DO NOT OPEN WHEN ENERGISED
POTENTIAL ELECTROSTATIC CHARGING HAZARD - CLEAN
ONLY WITH A DAMP CLOTH
ENCLOSURE ENTRIES: TWIN M20 X 1.5 / SINGLE 1/2” NPT
ATEX/IECEx & UKEx INSTALLLATIONS: IF TEMPERATURE
EXCEEDS 70°C AT ENTRY OR 80°C AT BRANCHING POINT USE
SUITABLE RATED CABLE AND GLANDS
ATTENTION
POUR REDUIRE LE RISQUE D’INFLAMMATION DES
ATMOSPHÈRES DANGEREUSES :
COUPER L 'ALIMENTATION AVANT OUVERTURE.
CONSERVER FERMÉ PENDANT LE FONCIONNEMENT.
AVERTISSEMENT
CONDUITS DOIVENT ETRE SCELLES EN MOINS DE 18
POUCES.
ÉQUIPEMENT NE DOIT PAS ETRE INSTALLE AVEC LE KLAXON
TOURNEE VERS LE HAUT DE HORIZONTAL.
NE PAS OUVRIR UN PRESENCE D’ATMOSPHERE EXPLOSIVE
NE PAS OUVRIR ENERGIE
DANGER POTENTIEL CHARGE ÉLECTROSTATIQUE -
NETTOYER UNIQUEMENT AVEC UN CHIFFON HUMIDE
ENTRÉES DE BOÎTIER: 2 x M20 X 1.5 / 1 x 1/2” NPT
ATEX/IECEx & UKEx INSTALLATIONS : SI LA TEMPÉRATURE
DÉPASSE 70 °C À L'ENTRÉE OU 80 °C AU POINT DE
BRANCHEMENT, UTILISER UN CÂBLE ET DES JOINTS
D'ÉTANCHÉITÉ APPROPRIÉS

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
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Document No. D190-00-651-IS
Issue 2
06-03-2023
Sheet 2 of 15
3) Marking & Rating Information
The D1xS1 Alarm Horns comply with the following standards for
hazardous locations:
3.1. Class/Division Ratings for US & Canada
Standards
Class I UL 1203 & CSA C22.2 No 30-M1986
Class Division Ratings for US (NEC)
Model No:
Rating
D1xS1F-DC024-S /
D1xS1R-DC024-S
Class I Div 1 ABCD T5 Ta -55°C to +85°C
Class I Div 1 ABCD T6 Ta -55°C to +75°C
Class Division Ratings for Canada (CEC)
Model No:
Rating
D1xS1F-DC024-S /
D1xS1R-DC024-S
Class I Div 1 ABCD T5 Ta -55°C to +85°C
Class I Div 1 ABCD T6 Ta -55°C to +75°C
Class Zone Ratings for US (NEC)
Model No:
Rating
D1xS1F-DC024-S /
D1xS1R-DC024-S
Class I Zone 1 IIC T5 Ta -55°C to +85°C
Class I Zone 1 IIC T6 Ta -55°C to +75°C
Class Zone Ratings for Canada (CEC)
Model No:
Rating
D1xS1F-DC024-S /
D1xS1R-DC024-S
Class I Zone 1 IIC T5 Ta -55°C to +85°C
Class I Zone 1 IIC T6 Ta -55°C to +75°C
Installation must be carried out in compliance with the National
Electric Code / Canadian Electric Code
3.2. ATEX / IECEx & UKEx Ratings
Standards
EN60079-0:2018/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”.
EN60079-31:2014/IEC60079-31:2013 (ed.2):
Explosive Atmospheres - Equipment Dust Ignition Protection by
enclosure “t”.
Model No:
Rating
D1xS1F-DC024-S /
D1xS1R-DC024-S
Ex db IIC T5 Gb Ta –55°C to +75°C
Ex db IIC T6 Gb Ta –55°C to +70°C
Ex tb IIIC T84°C Db Ta –55°C to +75°C
See Product table for electrical ratings of each unit model
Certificate No.
DEMKO 19ATEX2141X
IECEx ULD 19.0008X
UKEx UL UL21UKEX2132X
Epsilon x
Equipment Group
and Category:
II 2G
II 2D
CE Marking and
Notified Body No.
2813
UKCA Marking and
Notified Body No.
0518
4) Zones, Gas Group, Category and
Temperature Classification
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
operation.
Zone 2
Explosive gas air mixture 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
T6
85ºC
(D1xS1FDC024-S/D1xS1RDC024-S up to 70°C
ambient)
Area Classification Dust
Zone 21
Explosive dust air mixture likely to occur in normal
operation.
Zone 22
Explosive dust air mixture not likely to occur in
normal operation, and if it does, it will only exist for
a short time.
Dust Groupings
Group IIIA
Combustible Dusts
Group IIIB
Non-Conductive Dusts
Group IIIC
Conductive Dusts
Equipment Category
2G, 2D
Equipment Protection Level
Gb, Gc, Db, Dc
Maximum Surface Temperature for Dust Applications
84°C (D1xS1FDC024-S/D1xS1RDC024-S)
Ambient Temperature Range
-55°C to +75°C (-67°F to +167°F)
IP Rating
IP66 to EN60529
4 / 4X / 3R / 13 to UL50E / NEMA250
Installation must be carried out in compliance with the latest issue
of the following 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

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
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Document No. D190-00-651-IS
Issue 2
06-03-2023
Sheet 3 of 15
5) Specific Conditions of Installation
ATEx/IECEx & UKEx Installations:
The cable entries have two M20 x 1.5 –6H entry thread and a
single ½” NPT thread. If the installation is made using cable
glands, only suitably rated ATEx/IECEx or UKEx certified cable
glands must be used. They must be suitable for the type of cable
being used and also meet the requirements of the current
installation standards EN 60079-14 / IEC60079-14.
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.
Any unused cable entries must be closed with suitably rated and
UKEx certified blanking plugs.
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:
NEC / CEC Installations:
The cable entries have two M20 x 1.5 –6H entry thread and a
single ½” NPT thread. If the installation is made using cable
glands, only suitably rated and UKEx certified cable glands must
be used. They must be suitable for the type of cable being used
and also meet the requirements of the current installation
standards for NEC & CEC.
If the installation is made using conduit, openings must have a
sealing fitting connected within 18” of enclosure.
Any unused cable entries must be closed with suitably rated and
certified blanking plugs.
All Installations:
The plastic horn is not anti-static and the metallic enclosure has
a non-conductive coating. These 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.
Only the explosionproof cover is to be used for access to
the enclosure for installation, service and maintenance.
6) Specific Conditions for Safe Use
Flameproof threaded joints and cemented joints are not permitted to
be repaired.
7) Product Mounting and Access
7.1. Mounting
The D1x Alarm Horn may be secured to any flat surface using at
least two of the three or four 7mm fixing holes. The enclosure
provides IP66 protection and is suitable for installation in exterior
locations providing it is positioned so that water cannot collect in
the horn, and the cable entry is sealed.
Fig 1: Mounting Locations
The Equipment must not be installed with the horn facing upwards
of horizontal.
7.2. Installation procedure
a. Secure the D1x unit to a flat surface via the three 7mm
fixing holes in the mounting bracket.
b. Remove the explosionproof cover of the alarm horn by
unscrewing it, taking care not to damage the
explosionproof threads in the process (Refer to section
7.4).
c. Fit an M20/NPT suitably rated cable gland or conduit entry
into the hole in the enclosure and connect the field wiring
to the appropriate alarm horn terminals as shown in D190-
06-651. The power supply terminals are duplicated so that
units may be connected in parallel. An end of line
monitoring resistor may be fitted to DC units only (see
section 10). If the second and third M20/NPT entries are
not used, suitably rated stopping plugs must always be
fitted.
d. Replace the explosionproof cover of the loudspeaker,
taking care not to damage the explosionproof threads.
Tighten fully.
7.3. Hornless Variants
The D1x Sounder is also available as a variant with no horn fitted
in the factory. The Horn threaded nose portion has a fitment
thread of 1-3/8” – 18 UNF (to BS1580 or ANSI B1.1). The
customer is responsible for sourcing and correctly fitting a suitable
horn that meets all of the relevant safety requirements.
Minimum Ratings of Cables & Cable Glands
Max Ambient Temp (°C)
55
60
65
70
75
D1xS1FDC024-S/D1xS1RDC024-S
Min. Rating (°C)
70
75
80
85
90
Table 2: ATEx/IECEx & UKEx Min. Ratings of Cables & Cable Glands.
D1xS1F
D1xS1R

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
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Document No. D190-00-651-IS
Issue 2
06-03-2023
Sheet 4 of 15
7.4. Access to the Explosionproof Enclosure
Fig 2: Accessing the enclosure
To access the Ex d chamber, loosen the M4 grub screw on the
sounder cover. Open the enclosure by turning the sounder cover
counterclockwise and remove the cover. Take extreme care not
to damage the explosionproof threads in the process.
On completion of the installation the flameproof threaded joint should
be inspected to ensure that they are clean and that they have not been
damaged during installation.
Ensure 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 sounder enclosure.
8) Installation Requirements
8.1. Safe Installation Requirements
Warning –High voltage may be present,
risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
The sounder must only be installed by suitably qualified personnel in
accordance with the latest issues of the relevant standards.
The product must only be installed by suitably qualified personnel
in accordance with the latest issues of the relevant standards.
The installation of the units must also be in accordance with the
NEC / CEC and any local regulations and should only be carried
out by a competent electrical engineer who has the necessary
training.
8.2. Cable Selection and Connections
Electrical connections are to be made into the terminal blocks on the
PCBA, using solid wire 0.5-4mm2 / AWG 20-12 or stranded wire, sizes
0.5-2.5mm2 / AWG 24-14. Wire insulation needs to be stripped 8mm.
Wires may be fitted securely with crimped ferrules. Terminal screws
need to be tightened down with a tightening torque of 0.45 Nm / 3.5
Lb-in.
When selecting the cable size, consideration must be given to the input
current that each unit draws (see table 1), the number of sounders 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 the
sounders connected to the line.
DC: 0.2 - 2.5mm2/ AWG24 - AWG12
Fig 3: Wire Preparation.
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.
8.3. Earthing
Fig. 4 Earth Locations
The unit has both a primary internal and secondary external earth
fixing point.
Internal earth 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 minimum 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
4mm2 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.
8.4. 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 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 D1x 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.
Internal Earth
Marked with G
External Earth
8mm

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Document No. D190-00-651-IS
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Sheet 5 of 15
9) Settings
Following illustrations show the settings available for D1xS1 Alarm
Horn Sounders. See schematic diagram D190-06-651 for details.
9.1. Configuration
See Table 1 for product power supply and Sound Pressure Levels
(SPL).
Configuration for DC Units
Fig 5: DC PCBA.
9.2. Stage Switching Polarity (DC Units)
Switching from positive switching (default) to negative switching - DC
Only.
NOTE: Max supply is 33V DC –if higher DC voltage is required, use
Negative switching.
Figure 6: Stage Switching Polarity.
9.3. Tone Selection
The D1x Alarm Horn Sounders have 64 different tones that can be
selected independently for the first and second stage alarms. The
tones are selected by operation of the tone setting DIP switch 1 & DIP
switch 2 (see fig 7) on the PCB, for stage 1 and stage 2 respectively.
However please see section 15 which outlines the SIL 2 approved tone
available of this tone table.
Default = Switch 2
S2 - Tone 1
0 0 0 0 0 0
Default = Switch 1
S1 –Tone 44
1 1 0 1 0 1
(ON = 1, OFF = 0)
Figure 7: DIP switch configuration
The sounder can also be switched to sound the third and fourth stage
alarm tones.
The tone table (D221-95-651-IS) shows the switch positions for the 64
tones on first and second stages and which tones are available for the
third and fourth stages dependent on the Stage 1 DIP switch setting.
Following table (Table 3) is a summary of DC: D190-06-651 wiring
options.

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Document No. D190-00-651-IS
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Sheet 6 of 15
Config.
Voltage
Configuration Description
Features
Product
Option
Identifier
1a
DC
Single Stage Configuration
•Line monitoring
•Positive Switching
1
1b
DC
Two Stage Configuration
•Common Negative
•Positive Switching
1
1c
DC
Three/Four Stage Configuration
•Common Negative
•Positive Switching
1
2
DC
Three/Four Stages. Voltage Free 2nd, 3rd &
4th Stage Activation Configuration
•Common Positive
•Customer Set H1 & H2 to Negative
Switching
1
Table 3: Summary of Wiring Options. See Document D190-06-651 for DC Schematic Diagrams.
10) End of Line Monitoring (DC Units)
10.1. Standard DC End Of Line Monitoring
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.
The resistor must be connected directly across the +ve and -ve
terminals as shown in the following drawing. The resistor leads should
be kept as short as possible.
SIL2 line monitoring module product version: see section 20 for
standard default values and product coding. See document D190-06-
651 for associated wiring diagram.
Figure 8: End of Line Resistor placement.
Note that the maximum forward polarity monitoring voltage is
6V. A monitoring voltage greater than 6V may activate the
alarm horn sounder and the 2nd, 3rd or 4th stages.
11) Maintenance, Overhaul and Repair
Maintenance, repair and overhaul of the equipment should only be
carried out by suitably qualified personnel in accordance with the
current relevant standards:
For ATEx/IECEx or UKEx:
EN60079-19/IEC60079-19
Explosive atmospheres –Equipment repair, overhaul and
reclamation
EN 60079-17/IEC60079-17
Explosive atmospheres –Electrical installations inspection
and maintenance
Units must not be opened while an explosive atmosphere is present.
If opening the unit during maintenance operations, a clean
environment must be maintained and any dust layer removed prior to
opening the unit.
Potential electrostatic charging hazard –Clean only with a damp cloth.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
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Document No. D190-00-651-IS
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Sheet 7 of 15
· All models are approved for use as Audible Signal Appliance for use as General Signaling: UL464A & CSA C22.2 No 205-17
· Type 4 / 4X / 3R / 13, IP66
· -55°C to +85°C / -67°C to +176°F
General Signaling Canada:
D1xS1-DC024-A, D1xS1-DC024-S: -55°C to +85°C / -67°F to +185°F
· To maintain Ingress Protection, cable entries must be fitted with suitably rated cable glands or stopping plugs
· EOL Monitoring (DC Only): End of Line Devices may be fitted between the +ve & -ve terminals of the PCBA. Please ensure that the device legs meet
the wire size range stated for the connection terminals and are fitted correctly in order to avoid a short. Refer to the compatible control panel specification
for EOL device values and ratings
Model
Nominal
Voltage
Voltage Range
P1 Nominal
Operating
Current#
P2 Nominal
Operating
Current#
P3 Nominal
Operating
Current#
P1 Max
Operating
RMS*
P2 Max
Operating
RMS*
P3 Max
Operating
RMS*
D1xS1-DC024-A /
D1xS1-DC024-S
12V dc
11.5 - 54V dc
221mA
-
-
221mA
-
-
24V dc
185mA
-
-
48V dc
115mA
-
-
*Max Operating current for worst-case input voltage; Nominal current at nominal voltage and Tone 12
Table 4: UL General Signaling Electrical ratings

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Document No. D190-00-651-IS
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Sheet 8 of 15
12) SIL 2 Instruction/Safety Manual
Figure 9 - The SIL 2 Module monitors the Sounder and interfaces to the customer plant.
Warning –To maintain the integrity of the SIL 2 units the system must be installed, commissioned and used within the parameters outlined in this
manual. Failure to comply could result in an unintended unit operation or function.
Warning –The unit must be powered in either Standby or Active modes to comply with the SIL 2 approval requirement.
If the power is disrupted the unit must be allowed to go through the commissioning cycle to reset.
Failure to complete the commissioning cycle and continued disruption in the power supply will generate a fault state which will require
the sounder to be reset (see section 16-4).
Warning –Only the alarm tones specified in section 15 may be selected for use in SIL2 compliant systems.
SIL 2 System Description
The SIL 2 module monitors the function of the device and provides
feedback to the control panel. A fault condition can be communicated
by two methods:
•4 wire installation can be seen as per section 16-1.
A SIL 2 system wiring for fault detection in standby and
active mode with independent fault contacts.
•2 wire installation can be seen as per section 16-2.
A SIL 2 system by the introduction to the monitoring circuit
and linking in an end of line resistor can only register the
fault in standby mode.
13) SIL 2 System Terms and Function
The SIL 2 Sounder Unit Monitors
•Standby mode and Active mode
•Health status of power supply
•Sounder correct function and tone pattern
The SIL 2 sounder operates as part of a SIL 2 system.
The sounder will after commissioning remain powered in Standby
mode (reverse polarity) until the sounder is required to operate. When
the signaling device is required to operate the polarity is changed to
normal supply and the sounder will go into Active mode where it will
start to sound the correct tone. When periodically testing the system
and sounders operation is put into Active mode.
The system panel or PLC will control whether the system is in either
of the main two operational modes.
Standby Mode –This is where the power supply polarity is reversed
so negative (–ve) is feed to the positive (+) sounder terminal and
positive (+) is feed to the negative (–ve) sounder terminal.
In Standby mode the sounder will not sound the tone but the SIL 2 unit
is monitoring power supply and is set-up ready to go to Active (alarm)
mode.
Power relay RLY1-1 will be open whilst SIL 2 relay RLY1-2 will be
closed contact between terminals 1 & 2.
If power is disrupted the SIL 2 unit will go into Fault mode, in fault
mode the Power relay RLY1-1 will close whilst SIL 2 relay RLY1-2 will
become open circuit between terminals 1 & 2.
Active Mode –This is where the power is in normal polarity, positive
(+) supplied to the positive (+) sounder terminal and negative (–ve) is
supplied to the negative (–ve) sounder terminal.
In Active mode the alarm horn sounder will output the selected alarm
tone. The SIL 2 module checks for the correct alarm tone output and
the functionality of the alarm tone signal generation process.
Power relay RLY1-1 will be open whilst SIL 2 relay RLY1-2 will be
closed contact between terminals 1 & 2.
The SIL 2 unit will also check for signal polarity.
If a fault is found the SIL 2 unit will go into Fault mode.
If power is disrupted the SIL 2 unit will go into Fault mode, in fault
mode the Power relay RLY1-1 will close whilst SIL 2 relay RLY1-2 will
become open be circuit between terminals 1 & 2.
J3 HEADER PIN

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Document No. D190-00-651-IS
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Sheet 9 of 15
Fault modes - The fault modes listed 13-1 & 13-2 below will make the
SIL 2 unit change the state for relays RLY1-1 and RLY1-2.
In fault mode the Power relay RLY1-1 will close whilst SIL 2 relay
RLY1-2 will become open circuit between terminals 1 & 2.
13-1 Sounder Failure
•Tone Failure –No Tone detected
•Sounder Controller failure –No tone generation pulse
detected
•Tone Rate Failure –Regular tone cycle erratic
13-2 Power Failure / SIL 2 Failure
•SIL 2 Controller failure –Internal function and system
checking flags fault
•Rapid Power cycling –System indicates power instability
•Total Power Failure
It is possible to reset these faults if they were transitory.
Resetting Failure (by power cycling) - It is possible that the SIL 2 unit
can be reset by powering the unit off for a period greater than 20
seconds. On restarting the unit and running through the
commissioning cycle the fault may clear.
Resetting Failure (by Hard Reset) - It is possible that the SIL 2 unit can
be reset by hard resetting the unit using the reset jumper within the
unit (see section 16-4) on hard resetting.
On restarting the unit and running through the commissioning cycle,
the fault may clear. It is necessary to run the test function cycle again
to see if the fault is still evident.
If the hard reset process does not correct the latched fault the alarm
horn sounder may require further investigation, please contact your
local E2S representative.
Commissioning System - Functional start-up of System
(Normally in reverse polarity mode)
When Commissioning system the power must not be disrupted to the
SIL 2 Unit within the unit’s initialization cycle which is 5 seconds.
Once past this period the SIL 2 system is fully operational and will be
in monitoring the sounder and power in Standby mode.
The relay RLY1-2 on the SIL 2 unit will only remain open for a
maximum of 1 second on commissioning start-up. RLY1-2 will
subsequently close contacts 1 & 2 indicating healthy operation.
Contact 1 & 2 will only remain open in the event of a fault or a loss of
power.
System Testing (Active Mode normal polarity)
The SIL 2 system will remain monitoring the power in standby mode
until the polarity is changed to normal mode to enable an active system
for sounder functional testing.
Important: - The polarity must be held in active mode for a period in
excess of 15 seconds to ensure a full system check is performed.
Once the test period has been completed the unit can be switched
back to standby mode by reversing the polarity.
If no faults have been found during the test the relays will remain in
steady state.
The SIL 2 unit will continue to monitor the power and module function.
Important: - The automated test cycle must be undertaken on at least
a weekly basis to maintain the SIL 2 units reliability.
System Activation (Active Mode normal polarity)
The SIL 2 system will remain monitoring the power in standby mode
until the polarity is changed to Active mode to enable an active system
for sounder to function as a warning signaling device.
Important :- The polarity must be held in active mode for a period in
excess of 15 seconds to ensure a full system check is performed whilst
in alarm mode, although it is expected that during a system activation
this period will be significantly greater.
Note :- The fault indication signal on TB1 can take up to 50
milliseconds to indicate system fault.

European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: [phone]
Document No. D190-00-651-IS
Issue 2
06-03-2023
Sheet 10 of 15
14) SIL 2 Wiring configuration and Sounder set-up
Figure 10 –Terminals and header pins for sounder
Power & Communication with the system control panel can be configured in two ways: - Although it is highly recommended that the unit is wired as
stated in this section 16-1 as a 4 –Wire System.
15) SIL 2 APPROVED TONE SELECTION
D1xS1FDC024-S/D1xS1RDC024-S sounders need to be set to one off the SIL 2 approved tones to work correctly with the automated sounder check
on pattern generation and signal output checks.
Important: - Only tones use tones that are stated as SIL 2 approved for the SIL 2 application. Ensure that the unit is set to one of these tones see in
Tone Table (D221-95-651-IS).
As factory default the sounder should be set to Stage 1 Dip SW1 to Tone 44 and Stage 2 Dip SW2 to Tone 1.
J3 Header –Hard Reset
Shown in factory default position A
(see section 16-4), set to
Normal operation
Sounder Supply Terminals
+
-
J1 Header –Current Sense Resistor (CSR)
Shown in factory default position A
(see section 16-3), places SIL TB1 Current
sense resistor in circuit.
J2 Header –Fault Resistor (FR)
Shown in factory default position A
(see section 16-3) removes power
supply terminal block. Fault resistor
& relay RLY 1-1out of circuit.
DIP Switch Tone Selection
SIL Relay Terminals TB1
2
1