Installation Sheet
Contents
1. Associated Apparatus Galvanically Isolated Relay with Entity Parameters o Q o Q See Note 70 IS mA1 Sounder 1 No revision to drawing without prior FM approval 2 The associated apparatus must be FM approved 3 The associated apparatus manufacturer s installation drawing must be followed when installing this equipment 4 Installation should be in accordance with ANSIISA RP12 06 01 installation of Intrinsically Safe Systems for Hazardous Classified Locations and the National Electrical Code ANSI NFPA 70 5 The Galvanically Isolated Supply mustbe a FM approved resistively limited single channel supply having parameters less than or egual ta those quoted and for which the output is nan ignitian capable for the Class Division ar Zone and Group of use 6 The S mA1 Sounder enclosure has an ingress protection rating of IF 65 If supplied without cable entry devices then metallic or plastic cable glands or conduit hubs shall be fitted that provide the required environmental protection T To prevent ignition of flammable ar combustible atmospheres disconnect power before servicing 8 Substitution af components may impair safety 9 The total capacitance connected to terminals ofthe sounder ie Ceabe plus any ather Capacitance shall nat exceed 83nF 10 The Ceai and Leabe of the cables connecting the galvanically isolated relays to sounder terminals S2 and 53 Shall be less than or equal ta the2. warning signals INSTRUCTION MANUAL IS mA1 Minialarm intrinsically Safe Round Sounder IS mA1 Sounder Volume Control Tone Selection Switches The IS mA1 sounder is CE marked for compliance with the European Explosive Atmospheres Directive 94 9 EC and the European EMC Directive 89 336 EEC 1 Introduction The IS mA1 minialarm is an ATEX and IECEx certified intrinsically safe sounder which produces a loud warning signal in a hazardous area Forty nine first stage alarm sounds can be selected by internal switches and each one can be externally changed to a second or third stage alarm sound The sounder may be used in all gas groups IIA IIB and IIC 2 Description Fig 1 shows a simplified block diagram of an IS mA1 minialarm sounder The device operates immediately power is applied to the and terminals which are duplicated to allow a second sounder to be connected in parallel or for an end of line monitoring resistor to be installed The output tone is defined by the positions of the six internal switches and this tone can be changed to a second or third stage alarm tone by connecting terminals S2 or S3 to OV The tone generator is crystal controlled to ensure that when two sounders connected to the same power supply are started at the same time the output tones remain synchronised 3 Supply Voltage The IS mA1 minialarm sounder has been designed to operate in a hazardous area from a 24V dc supply via 28V 93
3. Barrier te 32 amp So wrt with Entity Parameters fen S Us 28V a la O ci 0 Uo 168V oer lo 7 amA Po 3inmvy Associated Apparatus Diode Return Barrier with Entity Parameters Wo 26W o Q Co Ceante ee ee i T S o S T IS mA1 Sounder o T o Control Drawing for shunt zener A MRS_ 10 01 07 diode barrier diode return barrier Issue Appd Date Drawn MRS Date 24 04 06 1 No revision to drawing without pior Fh approval 2 The associated apparatus must be FM approved 3 The associated apparatus manufacturer s installation drawing must be followed when installing this equipment 4 Installation should be in accordance with ANSIISA RP12 06 01 Installation af intrinsically Safe Systems for Hazardous Classified Locations and the National Electrical Cade ANSINFPA 70 5 The resistance between the intrinsically safe ground and the earth ground must be less the 1 ohm 6 The Shunt Zener Diode Barner mustbe a FM approved resistively limited single channel barrier having parameters less than or equal to those quoted and for which the output is non ignition capable for the Class Division ar Zone and Group of use 7 The ls maA1 Sounder enclosure has an ingress protection rating of IP 65 f supplied without cable entry devices then metallic or plastic cable glands or conduit hubs shall be fitted that provide the required environmental protection oO To prevent ignition of flammable
4. Ceabe and Leabe of the cable connecting the galvanically isolated supply to sounder terminals 4 Notes CAUTION Bonding between conduit connections is not automatic and must be provided as part of this installation CAUTION The clearance between sounder teminals 52 and 531s less than 8mm SCHEDULE DRAWING Mo rrodification permitted without reference tothe Notified Bod European Safety Systems Ltd Impress House 2 S Mansell Hoad Acton Control Drawing for galvanically eer E noA isolated supply isolated relay Drawing No installation Computer Ref D5035b dwt D 5035 Sheet 2 of 2 EC DECLARATION OF CONFORMITY v2 Manufacturer European Safety Systems Ltd Impress House Mansell Road Acton i London W3 7QH UK warning signals Equipment Type IS mA1 IS mA2 IS mA3 IS mB1 IS mC1 IS mA1M Directive 94 9 EC Electrical and Mechanical equipment for use in explosive atmospheres ATEX Notified Body for EC type Examination Sira Certification Service Notified Body No 0518 Rake Lane Eccleston Chester CH4 9JN UK EC type Examination Certificate SIRA O5ATEX2084X Notified Body for Quality Assurance Notification Sira Certification Service Notified Body No 0518 Rake Lane Eccleston Chester CH4 9JN UK Quality Assurance Notification SIRA 05 ATEX M342 Provisions fulfilled by the equipment ll 1 G Ex ia IIC T4 Ga 40 C lt Ta lt 60 C or M1 Ex ia Ma 40 C lt Ta
5. Tone 2 Tone 18 Tone 2 Tone 2 Tone 2 Tone 2 Tone 2 Tone 2 Tone 6 Tone 29 Tone 29 Tone 2 Tone 26 Tone 2 Tone 7 Tone 2 Tone 26 Tone 26 Tone 2 Tone 38 Tone 36 Tone 35 Tone 9 Tone 34 Tone 23 Tone 31 Tone 2 Tone 2 Tone 2 Tone 2 Tone 38 Tone 47 Tone 46 Tone 49 Tone 26 Tone 5 Tone 5 Tone 5 Tone 5 Tone 20 Tone 5 Tone 5 Tone 5 Tone 2 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 27 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 15 Tone 5 Tone 5 Tone 5 Tone 5 Tone 5 Tone 15 Tone 5 Tone 45 Tone 5 Tone 5 Tone 45 Tone 45 Tone 17 Tone 27 Tone 5 Tone 5 Tone 5 Tone 5 Tone 34 Tone 37 Tone 37 Tone 5 Tone 37 European Safety Systems Ltd Impress House Mansell Road Acton London W3 7QH sales e2s com Tel 44 0 20 8743 8880 www e2s com Fax 44 0 20 8740 4200 Document No IS 5001 Issue E 27 11 09 Sheet 3 of 6 Tone Setting Switches 1 6 O Ring Seal Volume Control Fig 2 Location of field terminals and controls 4 5 Other intrinsic safety certifications Please contact European Safety Systems Ltd for details of non European intrinsic safety approvals 5 Installation IS mA1 minialarm sounders should only be installed by trained competent personnel 5 1 Mounting The IS mA1 minialarm sounder may be secured to any flat Surface by inserting two mounting screws through the back of the round base See figure 3 The enclosure provides IP65 protectio
6. lt 60 C Standards applied EN 60079 0 2006 IEC 60079 0 2007 EN 60079 11 2007 EN 60079 26 2007 Directive 89 106 EEC Construction Products Directive CPD IS mA1 only Notified Body for EC type Examination VdS Schadensverhttung GmbH Notified Body No 0786 Amsterdamer Str 172 174 50735 K ln Germany EC type Examination Certificate 0786 CPD 20338 Standards applied EN 54 3 2001 A1 2002 A2 2006 Directive 2004 108 EC Electromagnetic Compatibility Directive EMC Standards applied EN 61000 6 1 2007 EN 61000 6 2 2005 EN 61000 6 3 2007 EN 61000 6 4 2007 The standards EN 60079 0 2006 and EN 60079 11 2007 are no longer harmonized The requirements of these standards have been checked against the harmonized standards EN 60079 0 2009 and EN 60079 11 2012 and there were no major technical changes affecting the latest technical knowledge for the products listed above On behalf of European Safety Systems Ltd declare that on the date the equipment accompanied by this declaration is placed on the market the equipment conforms with all technical and regulatory requirements of the above listed directives Martin Streetz Date and Place of Issue London 04 07 2012 Quality Assurance Manager Document No DC 011 Issue_C Telephone 44 0 20 8743 8880 European Safety Systems Ltd Facsimile 44 0 20 8740 4200 Company Registration No 2763350 E mail sales e2s com Registered Office Impress House www e2s com Mansell Roa
7. or combustible atmospheres disconnect power before servicing 0 Substitution of components may impair safety 10 The total capacitance connected to terminals of the sounder ie Ceate plus any other capacitance shall not exceed o3nF Notes CAUTION Bonding between conduit connections is not automatic and must be provided as part of this Installation CAUTION The clearance between sounder terminals 52 and 53 is less than 6mm SCHEDULE DRAWING No modification perrritted without reference tu the Notified Burch European Safety Systems Ltd Impress House 2 S Mansell Hoad Acton waming signals London W3 rH Drawing No Computer 3ef 25035 a dwg D 5035 Sheet 1 of 2 Hazardous Classified Location Class Division 1 Groups A B C D Class Zone 0 Groups IHA IB IO IS mA1 Sounder IS Class Zoned AEx ia llC T4 40 C Ta 60 C Entity Parameters Terminals wert U 2b 93mA Fi B ri i 0 Li 0 Terminals S52 amp S3 wert 5S2 U 48W 0 C Uo 16 8 lo 7 3mA Po aimi re re o a a Ee A MRS_ 10 01 07 Issue Appd Date Drawn MRS Date 21 04 06 Unclassified Lacatan Assaciated Apparatus Galvanically Isolated Supply with Entity Parameters Uo 26 lo 939mA Po Biri Co Ceabe see noe 9 Lo Leste Associated Apparatus Galvanically Isolated Relay with Entity Parameters o Q lo 0 See Note 70
8. 28V 93mA Positive Return Barrier T J i gt Power Supply IS mA1 Sounder Fig 6 Multi stage alarm using Zener barriers 7 Electrical System Design For Installation In Hazardous Areas Using Galvanic Isolators Galvanic isolators do not require a high integrity earth connection For small systems where a high integrity earth is not already available the use of galvanic isolators often reduces the overall installation cost and simplifies design 7 1 Single stage alarm The IS mA1 minialarm sounder may be powered by any galvanic isolator having output parameters within the limits specified in section 4 3 which has been certified Ex ia by an EC Notified Body The sounder may be controlled by turning the galvanic isolator on and off or by a mechanically activated switch on the hazardous area side of the isolator Hazardous Area Safe Area Galvanic Isolator IS mA1 Sounder Power Fig 7 Single stage alarm using galvanic isolator 7 2 Multi stage alarm The IS mA1 sounder second and third stages may be activated by using Galvanically Isolated Relays that have output parameters within the limits specified in section 4 4 which have been certified Ex ia by an EC Notified Body Document No IS 5001 Issue E 27 11 09 Hazardous Area Safe Area Galvanic Isolator IS mA1 Sounder Power Power Fig 8 Multi stage alarm using galvanic isolated relays 8 Cable Parameters The maximum permitted cable
9. 44 0 20 8740 4200 Sheet 2 of 6 Tone Selection To select the required first stage tone set the tone switches 1 to 6 see Fig 2 to the tone setting shown in the table below The table also shows which 2 and 3 stage tones are available for use with the selected first stage tone if more than one tone output stage is required Tone 1 Tone 2 Tone 3 Tone 4 Tone 5 Tone 6 Tone 7 Tone 8 Tone 9 Tone 10 Tone 11 Tone 12 Tone 13 Tone 14 Tone 15 Tone 16 Tone 17 Tone 18 Tone 19 Tone 20 Tone 21 Tone 22 Tone 23 Tone 24 Tone 25 Tone 26 Tone 27 Tone 28 Tone 29 Tone 30 Tone 31 Tone 32 Tone 33 Tone 34 Tone 35 Tone 36 Tone 37 Tone 38 Tone 39 Tone 40 Tone 41 Tone 42 Tone 43 Tone 44 Tone 45 Tone 46 Tone 47 Tone 48 Tone 49 Tone Description Continuous 340Hz Alternating 800 1000Hz 0 25s intervals Slow whoop 500 1200Hz 0 3Hz with 0 5s gap repeated Sweeping 500 1000Hz 1Hz Continuous 2400Hz Sweeping 2400 2900Hz 7Hz Sweeping 2400 2900Hz 1Hz Siren 500 1200 500Hz 0 3Hz Sawtooth 1200 500Hz 1Hz D N Alternating 2400 2900Hz 2Hz Intermittent 1000Hz 1Hz Alternating 800 1000Hz 0 875Hz Intermittent 2400Hz 1Hz Intermittent 800Hz 0 25s ON 1s OFF Continuous 800Hz Intermittent 660Hz 150Ns ON 150ms OFF Alternating 544Hz 100ms 440Hz 400ms NFS 32 001 Intermittent 660Hz 1 8s ON 1 8s OFF Sweep 1400Hz to1600Hz up 1s 1600Hz to 1400Hz down 0 5s Continuous 660Hz Alterna
10. Ui 28V li OmA 0786 CPD 20338 Terminals S2 amp S3 w r t Terminal SIRA O5ATEX2084X Year Serial No 09 1MA000001 IECEx SIR 06 0045X WARNING TO AVOID A POSSIBLE ELECTROSTATIC CHARGE ONLY CLEAN WITH A DAMP CLOTH european safety systems ltd ondon W3 7QH UK L www e2s com 2 The equipment may be used in zones 0 1 and 2 with flammable gases and vapours with apparatus groups IIA IIB amp IIC and with temperature classes T1 T2 T3 and T4 European Safety Systems Ltd Impress House Mansell Road Acton London W3 7QH sales e2s com Tel 44 0 20 8743 8880 www e2s com Fax 44 0 20 8740 4200 Document No IS 5001 Issue E 27 11 09 Sheet 1 of 6 3 The equipment is only certified for use in ambient temperatures in the range 40 C to 60 C and should not be used outside this range 4 The certificate number has an X suffix which indicates that the certificate contains one of more special conditions for safe use Those installing or inspecting the equipment should refer to this section of the certificate 5 The equipment has not been assessed as a safety related device as referred to by Directive 94 9 EC Annex II clause 1 5 6 Installation of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice 7 Repair of this equipment shall only be carried out by the manufacturer or in accordance with the applicable code of practice 8 The certification of th
11. d London UK W3 7QH UK
12. d to the IECEx scheme The installation requirements for IS mA1 sounders approved to the IECEx scheme are the same as the installation requirements for IS mA1 sounders approved to the ATEX directive Certificate No IECEx SIR 06 0045X Marking Ex ia IIC T4 Ga Ta 40 C to 60 C IEC 60079 0 2004 Edition 4 IEC 60079 11 2006 Edition 5 IEC 60079 26 2006 Edition 2 Standards CONDITIONS OF CERTIFICATION as stated on the IECEx Certificate of Conformity IECEx SIR 06 0045xX e The equipment has an ingress protection rating of IP65 However if it has been supplied without a cable entry device then the user shall ensure that the devices that are fitted will provide an ingress protection that is appropriate to the environment in which it is installed i e IP20 on better If only one of the two cable entries are used then the unused entry knockout shall be left intact or fitted with a blanking device that ensues ingress protection appropriate to the environment in which it is installed i e IP20 or better e The total capacitance connected to terminals w r t terminals i e the capacitance of the cable plus any other capacitance shall not exceed 83nF e The enclosure is non conducting and may generate an ignition capable level of electrosatic charges FM Approval The IS mA1 Sounder has also been FM Listed Marking IS Class I Zone 0 AEx ia IIC T4 IS Class l Division 1 Groups A B C D See the Control Drawin
13. exceed 83nF The enclosure is non conducting and may generate an ignition capable level of electrosatic 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 additionally cleaning of the equipment should be done only with a damp cloth Document No IS 5001 Issue E 27 11 09 The equipment shall only be supplied via Terminals w r t Terminals from a barrier having a maximum open circuit voltage Uo that is lt 28V and a maximum short circuit current lo that is lt 93mA where lo is resistively limited The barrier shall be ATEX certified by a notified body 4 2 Zones Gas Groups and Temperature Classification The IS mA1 minialarm sounder has been certified Ex ia IIC T4 When connected to an approved system it may be installed in ZoneOQ explosive gas air mixture continuously present Zone1 explosive gas air mixture likely to occur in normal operation Zone2 explosive gas air mixture not likely to occur and if it does it will only exist for a short time Be used with gases in groups Group A propane Group B ethylene Group C hydrogen Having a temperature classification of T1 450 C T2 300 C T3 200 C T4 135 C 4 3 Terminals and Power is supplied to the sounder via the and terminals which have the following input safe
14. gs D 5035 Sheets 1 and 2 for installation details and entity parameters IS mA1 Sounder IS Class Division 1 Groups A B C D APPROVED IS Class Zone 0 AEx ia IIC T4 40 C lt Ta lt 60 C Control Drawing D 5035 Year Serial No 09 1MS000001 WARNINGS Substitution of components may impair safety To prevent ignition of flammable or combustible atmospheres disconnect power before servicing TO AVOID A POSSIBLE ELECTROSTATIC CHARGE ONLY CLEAN WITH A DAMP CLOTH a2 S european safety systems ltd ponon ee 7 A K CPD Directive 89 106 EEC The IS mA1 Sounder is compliant with the requirements of the Construction Products Directive 89 106 EEC EN54 3 Type B IP65 Voltage Range 18 28V DC via a safety barrier see sections 6 and 7 800 1000Hz 0 25 Seconds Alternating 500 1200Hz 0 3Hz 0 5 Sec Gap Slow Whoop 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 additionally cleaning of the equipment should be done only with a damp cloth 9 1200500Hz 1Hz DIN 800Hz Continuous 660Hz 150mS ON 150ms OFF 554Hz 100mS 440Hz 400mS NF S 32 001 e The equipment shall only be supplied via terminal w r t terminal from a barrier having a maximum open circuit voltage Uo that is lt 28V anda maximum short circuit current
15. is equipment relies on the following materials used in its construction Enclosure ABS Plastic If the equipment is likely to come into contact with aggressive substances then it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected thus ensuring that the type of protection is not compromised Aggressive substances e g acidic liquids or gases that may attack metals or solvents that may affect polymeric materials Suitable precautions e g regular checks as part of routine inspections or establishing from the materials data sheet that it is resistant to specific chemicals SPECIAL CONDITIONS FOR SAFE USE as stated in the EC Type Examination Certificate SIRA O5ATEX2084X Conditions for IS mAl Sounder The equipment has an ingress protection rating of IP65 However if it has been supplied without cable entry devices then the user shall ensure that the devices that are fitted will provide an ingress protection that is appropriate to the environment in which it is installed i e IP20 or better If only one of the two cable entries are used then the unused entry knockout shall be left intact or fitted with a blanking device that ensures ingress protection appropriate to the environment in which it is installed i e IP20 or better The total capacitance connected to terminals wrt i e the capacitance of the cable plus any other capacitance shall not
16. lo that is lt 93mA where lo is resistively limited The tones listed have been tested to EN54 3 and are compliant with the Construction Products Directive 89 106 EEC The IS mA1 sounders are marked with the certification EN54 3 Test data document D5073 requirements for the ATEX and IECEx and approvals IS mA1 Sounder CE hate Ex Il1G_ ExiallC T4 Ga 40 C lt Ta lt 60 Ui 28V li 93mA Pi 660mW Ci 0 Li 0 vas ENOTES Terminal w r t Terminal VdS Type B Ui 28V li OmA 0786 CPD 20338 Terminals S2 amp S3 w r t Terminal SIRA O5ATEX2084X Year Serial No 09 1MA000001 IECEx SIR 06 0045X WARNING TO AVOID A POSSIBLE ELECTROSTATIC CHARGE ONLY CLEAN WITH A DAMP CLOTH London W3 7QH UK www e2s com european safety systems ltd European Safety Systems Ltd Impress House Mansell Road Acton London W3 7QH sales e2s com Tel 44 0 20 8743 8880 www e2s com Fax 44 0 20 8740 4200 Document No IS 5001 Issue E 27 11 09 Sheet 6 of 6 Hazardous Classified Location Unclassified Location Class Division 1 Groups A B C D Class Zone 0 Groups IHA IB IO IS maA1 Sounder IS Class Zone 0 AEx ia IC T4 Assaciated Apparatus Shunt Zener Diode Barrier with Entity Parameters Uo 26 lo 93 mA Po 660rrivy Co rabe bee bok 10 Lo gt Leaive 40 C Ta 2 80 C Entity Parameters Terminals wort U 26V Fama Fi B ri G 0 ea ASSoOciat d Apparatus Diode Return
17. mA resistive ATEX and IECEx certified Zener Barriers or Galvanic Isolators The sounders may be tested or used in safe areas without a Zener Barrier or Galvanic Isolator but at supply voltages above 16V the internal current limit will function and therefore it is recommended that they are not operated continuously with a direct supply greater than 16V Fig 1 Simplified block diagram 4 Intrinsic Safety Certification 4 1 ATEX certificate The IS mA1 minialarm sounder complies with the following standards EN60079 0 2006 EN60079 11 2007 EN60079 26 2007 EC60079 0 2007 used for guidance in respect of marking Ex I 1G Exia IIC T4 Ga 40 C lt Ta lt 60 C The EC Type Examination Certificate SIRA O5ATEX2084X has been issued by the Notified Body Sira This confirms compliance with the European ATEX Directive 94 9 EC for Group ll Category 1G equipment The sounder carries the Community Mark and subject to local codes of practice may be installed in any of the EEA member countries This instruction sheet describes installations which conform to EN60079 Part14 2008 Electrical Installation in Hazardous Areas When designing systems for installation outside the UK the local Code of Practice should be consulted 1 The certification marking is as follows IS mA1 Sounder 4 z nate x 1G ExiallC T4 Ga 40 C lt Ta lt 60 C EN54 3 Ui 28V li 93mMA Pi 660mW Ci 0 Li 0 VdS Type B Terminal w r t Terminal
18. n and is suitable for installation in exterior locations provided that the area around the two mounting screws through the back of the base moulding has been sealed and that suitable cable glands with the required IP rating have been used 5 2 Installation procedure a Unscrew the sounder unit security screw and remove the sounder section from the base by turning it anti Ecos Ensure that the O ring seal remains in place b Remove the required 20mm_ knockout section s depending on system wiring and mount the base to a flat surface by inserting two screws through the back of the base c Fit the required number of 20mm cable glands or conduit entries into the base and connect the field wiring to the appropriate sounder terminals as shown in section 6 and fig 2 of this manual The power supply terminals and are duplicated so that sounders may be connected in parallel or an end of line monitoring resistor may be fitted d Select the required output tone FL postioning the six switches as shown in Table 1 and Fig 2 e Apply power to the sounder and adjust the internal volume control to provide the required sound level f Check that the O ring seal is correctly located on the sounder section See Fig 2 and insert the sounder section into the base Push it fully home and turn it clockwise to align the mouldings before tightening the security screw European Safety Systems Ltd Impress House Mansell Road Acton L
19. ondon W3 7QH Document No IS 5001 Issue E 27 11 09 Fit mounting screws through base Fig 3 Mounting Sounder Base 6 Electrical System Design For Installation In Hazardous Areas Using Zener Barriers 6 1 Single stage alarm lf the control switch is in the positive supply or the power Supply is being turned on and off only a single channel Zener barrier is required as shown in Fig 4 This circuit may also be used if the sounder is being controlled by a mechanically activated switch on the hazardous area side of the barrier Hazardous Area Safe Area Sounder Positive Fig 4 Single stage alarm using single channel barrier If the control switch must be in the negative supply the circuit shown in Fig 5 may be used Any diode return barrier certified Ex ia by a EC Notified Body may be used providing its voltage drop is less than 0 9V Hazardous Area Safe Area 28V 93mA IS mA1 Positive Sounder Power Supply sales e2s com www e2s com Tel 44 0 20 8743 8880 Fax 44 0 20 8740 4200 Sheet 4 of 6 6 2 Multi stage alarm Connecting terminal S2 to OV activates the second stage alarm and similarly terminal S3 for the third stage alarm Fig 6 shows how the diode return barriers may be used If only two stages of alarm are required the third stage barrier should be omitted the 28V 93mA barrier and the single diode return channel may then be contained in one package Hazardous Area Safe Area
20. parameters are as specified on the certificate of the Zener barrier or galvanic isolator that has been selected for the installation Normally the limits are not restrictive but care should be taken not to exceed a capacitive limit of 83nF for installations when very long cables are used 9 Volume Control The output level of the IS mA1 sounder can be set by adjusting the volume control potentiometer see Fig 2 10 Maintenance The sounder should be regularly inspected to ensure that it has not been damaged Frequency of inspection depends upon environmental conditions but initially we recommend that this should be done annually No attempt should be made to repair a faulty ISmA1 sounder Suspect sounders must be returned to European Safety Systems Ltd or to your local agent for repair 11 Guarantee Sounders that fail within the guarantee period should be returned to European safety Systems Ltd It is helpful if a brief description of the fault symptoms is provided 12 Customer Comments European Safety Systems Lid is always pleased to receive comments from customers about our products and services All communications are acknowledged and whenever possible suggestions are implemented European Safety Systems Ltd Impress House Mansell Road Acton London W3 7QH sales e2s com www e2s com Tel 44 0 20 8743 8880 Fax 44 0 20 8740 4200 Sheet 5 of 6 IECEx Approval The IS mA1 Sounder has also been approve
21. ting 554 440Hz 1Hz Intermittent 544Hz 0 875Hz Intermittent 800Hz 2Hz Sweeping 800 1000Hz 50Hz Sweeping 2400 2900Hz 50Hz Simulated bell Continuous 554Hz Continuous 440Hz Sweeping 800 1000Hz 7Hz Continuous 300Hz Sweeping 660 1200 1Hz Two Tone Chime Intermittent 745Hz Alternating 1000 2000Hz 0 5s Singapore 420Hz 0 625s Australian Alert 500 1200HZz 3 75s 0 25s Australian Evacuate Continuous 1000Hz Continuous 2000Hz Intermittent 800Hz 0 25s ON 1s OFF Alternating 544Hz 100ms 440Hz 400ms NFS 32 001 Motor Siren Slow rise to 1200Hz Motor Siren Slow rise to 800Hz Continuous 1200Hz Motor Siren Slow rise to 2400Hz Intermittent 1000Hz 1s ON 1s OFF Sawtooth 1200 500Hz 1Hz D I N PFEER P T A P Intermittent 1000Hz 1s ON 1s OFF PFEER General Alarm 420Hz 0 625s Australian Alert 500 1200HZz 3 75s 0 25s Australian Evacuate Switch Settings 123456 000000 100000 010000 110000 001000 101000 011000 111000 000100 100100 010100 110100 001100 101100 011100 111100 000010 100010 010010 110010 001010 101010 011010 111010 000110 100110 010110 110110 001110 101110 011110 111110 000001 100001 010001 110001 001001 101001 011001 111001 000101 100101 010101 110101 001101 101101 011101 111101 000011 Second Stage Alarm Tone 2 Tone 17 Tone 2 Tone 6 Tone 3 Tone 7 Tone 10 Tone 2 Tone 15 Tone 7 Tone 2 Tone 4 Tone 15 Tone 4
22. ty parameters Ui 28V li 93mA Pi 660mW Ci 0 Li 0 The IS mA1 sounder may be powered from an ATEX certified Zener barrier or galvanic isolator which have output parameters equal to or less than 28V 93mA and 660mW where lo is resistively limited The cable parameters stated on the selected Zener barrier or galvanic isolator certificate must be observed Up to three IS mA1 sounders can be connected in parallel and powered from a common barrier or isolator Connecting two sounders in parallel will reduce the output from each by about 3dB Three sounders should only be powered from a common supply when the maximum supply voltage is available 4 4 Terminals S2 and S3 When terminals S2 or S3 are connected to OV terminal the sounder output tone changes to the second or third stage alarm respectively The input safety parameters for these terminals are Ui li 28V OmA Because the permitted input current is zero these terminals may only be connected to a diode return barrier an intrinsically safe relay or a galvanic isolator all of which must have been certified by an EC Notified Body Only diode return barriers with a voltage drop of less than 0 9V may be used Alternatively these terminals may be connected directly to a mechanically activated switch within the hazardous area European Safety Systems Ltd Impress House Mansell Road Acton London W3 7QH sales e2s com www e2s com Tel 44 0 20 8743 8880 Fax
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