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INSTALLATION &
TECHNICAL INFORMATION
PLEASE READ PRIOR TO INSTALLATION
Moflash Intrinsically Safe Sounder-Beacon Range
S00605, Issue 7, 28/07/2020
VISUAL AND/OR AUDIBLE SIGNALLING DEVICES
APPROVALS AND CONFORMITIES
Website: www.moflash.com
Email: technical@moflash.co.uk
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Summary of Contents for MOFLASH SIGNALLING IS-SB-02 Series
- Page 1 INSTALLATION & TECHNICAL INFORMATION PLEASE READ PRIOR TO INSTALLATION Moflash Intrinsically Safe Sounder-Beacon Range S00605, Issue 7, 28/07/2020 VISUAL AND/OR AUDIBLE SIGNALLING DEVICES APPROVALS AND CONFORMITIES Website: www.moflash.com Email: technical@moflash.co.uk...
- Page 2 1.0 Introduction The Moflash Intrinsically Safe Sounder-Beacon Range of products (IS-SB-02- xxxx) are ATEX and IECEx certified. This range is approved to be installed in Groups I (Mining) and Group II (above ground), Zones 0, 1 or 2 with gas groups IIA, IIB, IIC and Zones 20, 21 and 22 for dust groups IIIC and carries a tem- perature classification of T5.
- Page 3 4.0 Zones, Gas Groups and Temperature Classifications The Moflash Intrinsically Safe Sounder-Beacon Range is certified to the following: Ex ia IIC T5 Ga, Ex ia IIIC T100C Da, Ex ia I Ma. This means that the units can be installed in locations with the following condi- tions when connected to an approved system: Zones Zone 0...
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Page 4: Installation
5.0 Installation The TimeSaver base enables quick and easy installation of these units with no extra cabling to be made to the head of the unit. Connections are made to the base during the initial wiring phase which results in a faster and more reliable installation. - Page 5 • The location of the Sounder-Beacon should be chosen with due regard to the area over which the signalling device must be audible/visable. • These units are suitable for wall or ceiling mount only. • Environmental exposure conditions during installation should be dry. Moist or wet conditions should be avoided.
- Page 6 6.0 Wiring Line Terminal Marking Common Positive Supply IN (3) IN+ Sounder Negative Supply (2) - Beacon Negative Supply (1) ♫/☼ Table above indicates markings inside the base of the unit for wiring connec- tions. Each unit must be powered via an approved Zener Barrier or Galvanic Isolator with entity perameters that do no exceed: Uo:28v, Io: 93mA, Po:660mW, Ci:0, Li:0 The combined Sounder Beacon can be operated in 3 ways, Sounder only,...
- Page 7 Connection into the unit must be via a suitably rated Zener Barrier/Galvanic Isolator, the connections for combined operation are below. Independant Sounder/Beacon Alarm When the Sounder and Beacon are required to operate independantly, this is done by switching the negative connections as shown in the table on page 6. There are a number of ways for this to be accomplished through the suitable barriers, a number of methods are shown below: For this application, a barrier with 2 Diode return paths is required as shown in...
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Page 8: Galvanic Isolator
Galvanic Isolator The IS-SB-02-XX Intrinsically Safe Sounder Beacon Range is compatible for use with suitably rated Galvanic Isolators. The Glavanic Isolators have the advantage of not requiring an isolated high integrity earth to be installed to con- nect the Zener Barriers. These Isolators are often more expensive per unit but may reduce installation costs as the earth is not required. - Page 9 End of line monitoring is applicable to the Sounder Product. For this to func- tion correctly, the resistor must be connected between the IN+ terminal and the Sounder Negative Supply. A suitable Zener Barrier which can allow reverse polarity monitoring to take place and a fire panel compatible with Intrinsically Safe products must also be used.
- Page 10 7.0 Maintenance Little or no maintenance is required during the normal working life of the product. The Moflash Intrinsically Safe enclosures are resistant to most acids, alkalis and chemicals and have been designed to withstand severe weather conditions. However it is suggested that continuous supervision and periodic inspections may be required in relation to the requirements of the installation as per IEC 60079-17.
- Page 11 As previously stated in the installations sheet, the Intrinsically Safe Sounder Beacon Range must be powered via a suitable Zener Barrier or Galvanic Isolator whose characteristics do not exceed: Uo:28v, Io: 93mA, Po:660mW The value for Uo must be between 16v and 28v, and Io should not be below 50mA.
- Page 12 9.0 Tone Table DIP SWITCH TONE TONE TYPE TONE DESCRIPTION/ APPLICATION dB(A) @ 1m 1 - 2 - 3 - 4 - 5 - 6 970Hz O - O - O - O - O - O 800Hz/970Hz @ 2Hz O - O - O - O - I - O 800Hz –...
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