YO3 - YO4 / YL4 - YO5 / YL5

Transcription

1 C l i f f o r d & S n e l l YO3IS YO4IS DIMENSIONS mm 81(3.2 ) 90(3.5 ) YO3 - YO4 / YL4 - YO5 / YL5 Intrinsically Safe Audible and Visual Alarms ATEX YO5IS YL4IS YL5IS 90(3.5 ) 81(3.2 ) MAIN FEATURES BASEEFA approved 2 stage alarm Rugged construction 32 selectable tones meeting international regulations Meets PFEER sound signals recommended by UKOOA Enclosure made from ABS flame retardant plastic Monitoring facility High sound output Stainless steel fixings Continuously rated Sound selection via DIL switch C Mounting: Via internal fixing holes E D 180(7.1 ) Model YO4 Models Y03 and YO5 Dim. For YO3 For YO5 Dim A 118 (4.7 ) 169 (6.7 ) Dim B 102 (4.0 ) 153 (6.0 ) Dim C 89 (3.5 ) 134 (5.3 ) Dim D 85 (3.4 ) 128 (5.0 ) Dim E 18 (0.7 ) 23 (0.9 ) Dim F 6 (0.2 ) 8 (0.3 ) CONFIGURATOR Unit Type Sounder YO3 A B C All dimensions quoted are approximate only and subject to change without notice as are technical features resulting from continual development and improvement. Sounder YO4 Sounder YO5 Combination Unit - YL4 European Approved Barriers (See application notes) Opto-coupled Temp Classification 57.5(2.3 ) Combination Unit - YL5 276(10.9 ) Model YL4IS 88(3.5 ) 88(3.5 ) 9(0.4 ) Model YL5 (dimensions not shown same as for YO5) Mounting: Via external lugs 2 x Ø F fixing holes M20 Cable mounting hole at Dim E TECHNICAL SPECIFICATION Relative humidity 40 deg C Weight: YO3is 0.40Kg YO4is 0.49Kg YO5is 0.85Kg For use in zones 0,1,2 IP55 rated YO3, YO4 and YL4 IP56 rated YO5 and YL5 Volume control fitted on T4 class only Operating voltage 12Vdc, 18Vdc or 24Vdc via barriers Sound output YO3/4 1 mtr Max YO5 1 mtr Max European models ISC & ISD Operating temp 25deg C to 40deg C II 1G Ex.ia IIC, T4 or T6 YO3,YO4 and YO5 II 1G Ex.ia IIC, T4 YL4 and YL5 Voltage upper limit controlled by barrier D7277 Operating & Installation Instructions YO3,YO4 and YO5 D7441 Operating & Installation Instructions I.S. Beacons The PFEER sound signals recommended by UKOOA are: General Alarm Sound Signal 15 Interrupted tone 1000 Hz PAPA Sound Signal 31 Reverse Sweep Hz Toxic Gas Sound signal 11 Continuous Tone 1000 Hz APPROVAL SPECIFICATION European Standards Baseefa Certificate No. BAS02ATEX1190X YO3, YO4 and YO5 Baseefa certificate No. Baseefa08ATEX0194X YL4 and YL5 EN :2006 EN :2007 Lens Colour Red Flame Base Colour Red Normal (YL4 only) White (YL4 only) T4 Only YL4 YO3/4 YL5 YO5 YL4 YL5 YO3 YO4 YO5 YO5/YL5 YO3/YO4/YL4 Clifford & Snell - Member of the R.STAHL Technology Group Page 1 D

2 THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE CARRYING OUT ANY WORK ON THESE INTRINSICALLY SAFE ALARMS AN ATEX APPROVED APPROPRIATE BARRIER MUST BE USED BEFORE CONNECT- ING THESE UNITS TO ANY POWER SUPPLY THESE ALARMS SHOULD ONLY BE INSTALLED BY COMPETENT PERSONNEL These alarms are ATEX approved. Certification No: Baseefa08ATEX0194X CE0158 EX II 1 G - EEx ia IIC T4 No alteration to the unit i.e. PCB or pressure unit is allowed. In case if the unit becomes faulty, It must be returned to the factory. This equipment is designed and manufactured to protect against other hazards as defined in paragraph of Annex II of the ATEX Directive 94/9/EC. SPECIAL CONDITION FOR SAFE USE: The apparatus has plastic enclosures which constitute a potential electrostatic hazard. The enclosures must be cleaned only with a damp cloth. Location: A suitable location must be selected with regard to the area to be covered by the sound signal and the beacon. The surface should be flat in the area of the fixings and the material suitable to carry the weight of the alarm. The case of the sounder shouldn t be put under any stress. Installation: The sounder and beacon must be independently wired with an individual ATEX approved appropriate barrier. Sounder Setup Sound Signal Selection: Sound signal selection is made by the setting of a PCB mounted DIL switch, located between the input and output terminals, as shown in diagram below: SOUND SELECTION SWITCH OPEN=0, CLOSE=1 VOLUME CONTROL Volume Control: A volume control giving approximately 15dB(A) adjustment is located besides the DIL switch on alarms with a T4 temperature classification. Page 2 D

3 SOUND SIGNALS, SOUND OUTPUT AND SUPPLY CURRENT First Sound Frequency Rept. Rate 2nd Stage Sound Output Input Stage Description Hz Signal Switches db(a) Current Signal ma 1 alt. two tone / Cont.tone In. tone / / Int.fast,rising fast siren rising cons /40/ iso 8201 evac as std fast whoop slow whoop reverse sweep siren NOTES: The above sound output levels, switching rate and current consumption values relate to a typical YL5 sounder connected to 24Vdc supply via a suitable ATEX approved 28 Volts 300 Ohm d.c shunt diode For other Intrinsically Safe models i.e. YL4 the sound output is typically reduced by 2dB(A). For the same sounder connected to an 18 Volts or 12 Volts d.c supply via a 22 Volts 150 Ohm barrier respectively, the sound output level and current consumption figures will be reduced by 1-2.5dB(A), mA for 18Volts and dB(A), mA for 12 Volts supplies. Connection of two sounders in parallel to a single 24 volts d.c supply will reduce the sound output level by approximatly 3dB(A) and an input voltage tolerance to 10%. The recommended PFEER sound signals by UKOOA are as follows: General Alarm 1000Hz at 1.0 second intervals Signal number 15 PAPA Reverse sweep Hz Signal number 31 Toxic Gas 1000Hz Continuous Note Signal number 12. Page 3 D

4 Sounder Connection Details and Line Monitoring An End Of Line (E.O.L) Resistor is required for Line Monitoring and it should be wire wound or metal film type with a resistance value of not less than 750 ohms, and power rating not less than 2 Watts, or not less than 4700 ohms, with power rating of not less than 0.4 Watts. The line monitoring facility allows the integrity of the line to the sounder to be monitored through the barrier to the control system fault detection and indication circuits. Two same type sounders can be connected in parallel. 1. Monitoring via Reverse Polarity Single Stage Alarm: 2nd Stage Alarm with a third wire: 2. Monitoring via Threshold (applied voltage <1V) 1st Stage: 2nd Stage: Page 4 D

5 Beacon Connection Details and Line Monitoring For a 24 Volts source, connect the unit via a suitable ATEX approved 28 Volts 300 Ohm dc shunt diode For an 18 Volts source, connect the unit via a suitable ATEX approved 22 Volts 150 Ohm dc shunt diode For a 12 Volt s source, connect the unit via a suitable ATEX approved 15 Volts 100 Ohm dc shunt diode Note: - Connection of two or more beacons in parallel to a single supply (via a suitable barrier) will slightly reduce the light output. Line Monitoring. An End Of Line Resistor (EOLR) is required for Line Monitoring. This should be of the wire wound or metal film type with a resistance value of not less than 750 Ohms and a power rating not less than 2 Watts or not less than 4700 Ohms with a power rating not less than 0.4 Watts. The Line Monitoring facility allows the integrity of the line to the beacon to be monitored through the barrier to the control system fault detection and indication circuits. Two or more, same type, beacons can be connected in parallel. FIRST UNIT SECOND UNIT FINAL UNIT 0V Ve EOLR ATEX approved BARRIER INTERMEDATE UNITS A GROUP OF R. STAHL, WALDENBURG, GERMANY R. STAHL (P) LTD., 2/397, MOOKAMBIKA NAGAR KATTUPAKKAM, CHENNAI , INDIA TEL: / FAX: web: Page 5 D