MOFLASH SIGNALLING SD125 Series Manual

Alarm Stages
The alarm stages are set as follows:
Refer to Tone Selection Sheet ref: S00526 for Tone Selection, Volume Control and
Cable Gland information.
Sound Pause Option
Briey close the loop between ‘S0 – Dly’ for 1 second minimum each time to give the required
pause interval. The sound automatically restarts at the end of the interval.
7.0 End of Line Monitoring
An end of line monitoring diode or an end of line monitoring resistor can be connected across
the 24V+ and 0 terminals. If an end of line monitoring resistor is used, it must have a maximum
resitance value of 3k ohms and a minimum wattage of 0.5 Watts; or a minimum resistance value of
1.2k ohms and a maximum wattage of 2 Watts.
8.0 Maintenance
During working life of the product, little or no maintenance is required. Stainless Steel is
resistant to most of the acids, alkalis and chemicals. If abnormal or unusual environmental conditions
occur due to accident etc, visual inspection is recommended. To avoid electrostatic charge build-up,
only exterior of the product can be cleaned with a damp cloth. If spare parts are required, these can
be supplied by Moash. If any failure occurs but not caused by human factor, the product can be
returned to Moash for free repair or replacement during warranty period.
9.0 Conditions for Safety Use
i) This apparatus is suitable to be used only in ambient temperature as stated below:
ii) Other than product manufacturer, painting and surface nishing are not permitted
by the third party.
iii) When used in dusty atmosphere, ameproof cable entry devices or stopping plugs
have to be selected and installed carefully in order to maintain the IP rating
(IP66/67) of the product.
Moash part code SD125-S00525-Issue 3
INSTALLATION &
TECHNICAL INFORMATION
PLEASE READ PRIOR TO INSTALLATION
SD125 Series - (Explosion Proof Sounder)
Stainless Steel
AUDIBLE SIGNALLING DEVICE
Website: www.moash.com Email: technical@moash.co.uk
Type Ambient Temp
SD125 -400C to +700C
APPROVALS AND
CONFORMITIES
Stage Apply Power To Termination Connection Tone
1L & N - No sound
2L & N S0 to S1 (Factory pre-set) Set by DIP SW1
3L & N S0 to S2 Set by DIP SW2
4L & N S0 to S1 &S2 Set by DIP SW3
No of times Pause Interval
1 1 minute
2 5 minute
310 minutes - Closing the loop again for 1 second during this interval
automatically restores the sound.

Product installation must be carried out in accordance with any local codes that may apply
and should only be carried out by a competent electrical engineer.
Location:
The location of the unit should be made with due regard to the area over which the sounder
warning signal must be audible. The unit should only be xed to services that can carry the
weight of the unit.
Mounting (Bracket Mounting):
The unit mounts via a ‘U’ shaped stainless steel bracket by using one 12mm diameter and
two 8.5mm diameter bolt holes in the centre of the bracket (see picture 1). The alignment
and positions can be adjusted by loosening the two M8 screws, which fastened the stainless
steel bracket to the sounder. The sounder should be positioned such that dust, debris or water
cannot enter into the horn opening.
6.0 Wiring
General Requirement: Moash recommends that all cables and cores should be fully
identied (suggest using cable from 2.0 to 2.5 mm²). Ensure that all nuts, bolts and screws
are secured. Ensure that only the right and certied cable glands are used and earthed
correctly. Ensure that only the right and certied stopping plugs are used to blank off unused
gland entry points. In order to maintain the IP rating of the product, we recommend SS316L
for this application.
Cable connection:
The cable connection is to terminals on the pcb located in the ameproof enclosure of the
sounder. Cable connection should be carried out to in accordance with relevant technical
requirement (see picture 1).
For AC supply - connect to terminals marked ‘L’ & ‘N’.
Terminals provide loop in loop out facility.
For DC supply - connect ‘+’ to ‘L’ and ‘-‘ (0v) to ‘N’.
Alarm stages - terminals ‘S0’ (common) ‘S1 & S2’
(refer to table overleaf).
Removal of End Cover
Unscrew the four (4) M5 retained hex socket head screws
(see diagram 2). Twist the cover gently clockwise and
anti-clockwise, whilst pulling away from the body,
keeping the cover parallel to the body until it comes free.
This will allow the cover to hang on its retaining strap.
Before replacing the cover, check the ameproof
joints are clean and not damaged, the gasket is
retained in its groove.
Caution: Before removing the cover ensure
the power to the sounder is isolated.
1.0 Introduction: The SD125 Explosion Proof sounder is certied for use and installation in Zone
1 and Zone 2 areas with gas groups of IIA, IIB, IIC and temperature classication of T4~T6. It
specially applies to Oil & Gas, Offshore Platform, Chemical, Petrochemical, Renery and Marine
Industries etc. Enclosure material is Stainless Steel. The sounder has 4 stage alarm tones which can
be sent out. 63 tones are selectable. Users can record sounds or customize sounds into the sounder
by using 5 spare tones. Tone can be present during installation.
2.0 Explosion Proof Labelling:
All products have a rating label with the following important information:
Product order no: eg SD1251BDCNNAR (Refer to the datasheet for product order selection)
Input voltage: <48v DC or 100-240v AC (50/60 Hz), <20W
Code: Ex d IIC T4~ T6 Gb, Ex tb IIIC T1350C~T850C IP66
Nemko ATEX Certicate No: Nemko 14 ATEX 1009X
ATEX Mark:
IECEx Certicate: IECEx-NEM 14.0005X
Gas Group and Category: II 2GD
CE Mark: Mark No: 0518
Warning: DO NOT OPEN WHEN AN EXPLOSIVE GAS ATMOSPHERE IS PRESENT
Finished product serial no (Include date of construction): ie. SD125-0201080001
SD125-Stainless Steel Sounder, Day-02, Month-01, Year-08, Product Serial Number-0001
3.0 Type Approval Standard: The SD125 series have an EC Type Examination Certicate
issued by Nemko and have been approved to the following standards:
EN 60079-0:2012 (IEC 60079-0:2011), EN-60079-1:2007 (IEC 60079-1:2007) and
EN 60079-31:2009 (IEC 60079-31:2008).
4.0 Zones, Gas Group, Category and Temperature Classication
The SD125 series have been certied Ex d IIC T4~T6.
This means that the units can be installed in locations
with the following conditions:
Area Classication
Zone 1: Explosive gas air mixture likely to occur in normal operation.
Zone 2: Explosive gas air mixture not likely to occur, and if it does,
it will only exist for a short time.
Gas Groupings:
Group IIA Propane Group,
IIB Ethylene Group and
IIC Hydrogen and Acetylene
Equipment Category: 2Gd
Temperature Range: -400C < Ta <700C
5.0 Installation
General Requirement: The product must be installed
in accordance with the latest issued relevant requirements
in the EN60079-0 and EN60079-1 specication or the
equivalent IEC specication- Selection, Installation
and Maintenance of electrical apparatus for use in
potentially explosive atmosphere.
Diagram 1
263.5
170.0
3.0
ø282.8
153.0
60.0
ø12.0
2-ø8.5
FIX HOLE
243.8
169.8
ø150.0
DIP Switch
Potentiometer
153.0
30.0
ø187.0
195.8
CABLE ENTRIES (x2)
4 - M5
SOCKET
SCREWS
L SO S2
N S1
DIP Switch
Potentiometer
L SO S2
N S1 DIY
Pause Button
Reset Audio In
Recording
Button
263.5
170.0
3.0
ø282.8
153.0
60.0
ø12.0
2-ø8.5
FIX HOLE
243.8
169.8
ø150.0
DIP Switch
Potentiometer
153.0
30.0
ø187.0
195.8
CABLE ENTRIES (x2)
4 - M5
SOCKET
SCREWS
L SO S2
N S1
DIP Switch
Potentiometer
L SO S2
N S1 DIY
Pause Button
Reset Audio In
Recording
Button
263.5
170.0
3.0
ø282.8
153.0
60.0
ø12.0
2-ø8.5
FIX HOLE
243.8
169.8
ø150.0
DIP Switch
Potentiometer
153.0
30.0
ø187.0
195.8
CABLE ENTRIES (x2)
4 - M5
SOCKET
SCREWS
L SO S2
N S1
DIP Switch
Potentiometer
L SO S2
N S1 DIY
Pause Button
Reset Audio In
Recording
Button
263.5
170.0
3.0
ø282.8
153.0
60.0
ø12.0
2-ø8.5
FIX HOLE
243.8
169.8
ø150.0
DIP Switch
Potentiometer
153.0
30.0
ø187.0
195.8
CABLE ENTRIES (x2)
4 - M5
SOCKET
SCREWS
L SO S2
N S1
DIP Switch
Potentiometer
L SO S2
N S1 DIY
Pause Button
Reset Audio In
Recording
Button
Diagram 2
Picture 1