SharpEye 20/20I 3 Triple IR (IR ) Flame Detector User's and Maintenance Manual Doc. No. TM 20/20I, Rev. (4)-99 July 1999 Factory Mutual CENELEC C.S.A. Approved Approved Approved Class I Div. 1 Groups B, C, D Class II Div. 1 Groups E, F, G EExd IIB T5 EN 50-014, 50-018 Class I Div. 1 Groups B, C, D Class II Div.
Contents CONTENTS ...................................................................................................................................................................... 2 FIGURES ........................................................................................................................................................................... 4 TABLES ........................................................................................................................................
8 OPERATING INSTRUCTIONS............................................................................................................................39 8.1 SCOPE....................................................................................................................................................................39 8.2 POWER-UP ...........................................................................................................................................................39 8.3 RESET ....
Figures FIGURE 1: IR 3 FLAME D ETECTOR....................................................................................... 9 FIGURE 2: FLAME D ETECTOR ASSEMBLY - OUTLINE DRAWING..................................... 10 FIGURE 3: HORIZONTAL AND VERTICAL FIELDS OF VIEW ............................................... 12 FIGURE 4: INDICATION LED S ............................................................................................ 14 FIGURE 5: SWITCH LOCATIONS .........................................
Introduction The Spectrex Model 20/20I is a triple IR spectrum flame detector designed to provide maximum fire protection. It uses innovative technology of advanced digital signal processing to analyze the dynamic characteristics of fire. Three sensitive IR channels process the signals. Detection performance is controlled by a microprocessor and easily adapted to all environments, applications and requirements.
PART A TECHNICAL MANUAL -6-
1 TECHNICAL FEATURES • DETECTION RANGE: up to 60 m (200 ft) for a 0.3m x 0.3m (1ft x 1ft) fire. • ULTRA HIGH IMMUNITY TO FALSE ALARMS (see para. 2.3). • ADVANCED DIGITAL PROCESSING OF THE DYNAMIC CHARACTERISTICS OF FIRE: Flickering, Threshold correlation and Ratio. THREE SEPARATE IR CHANNELS: B ETWEEN 3-5 MICRONS . • FIELD PROGRAMMABLE SENSITIVITY: four ranges. • TWO RESPONSE LEVELS: Warning & Detection. • SOLAR BLIND • MICROPROCESSOR BASED: Digital signal processing.
• Detection distance is restricted to 10 meters (33ft) only. • Their immunity to false alarm sources is limited. 1.1.4 The advantages of IR3 technology To overcome these limitations, Spectrex Inc. revised an innovative concept of utilizing an additional detection channel. Three channels collect more data from the environment, permitting more accurate analysis and better performance.
IR 3 FLAME DE TECTOR IN T WITH BU ILT EST FIGURE 1: IR 3 FLAME D ETECTOR -9-
ALARM LED IR SENSOR 120 IR SENSOR IR SOURCE IR SOURCE 1 A IR 3 FLAME DETECTOR WITH BUILT IN TEST 1/4"-20UNC-2B 132 8 2 OR EARTH TERMINAL THREAD FOR CONDUIT 3/4"-14NPT OR M25x1.5P 0 2 PL. 1 IR SENSOR 3 POWER LED 108 (4 1/4") 1/4"-20UNC-2B OR M6x1P 4 PL.
2 PERFORMANCE 2.1 DETECTION SENSITIVITY Detection sensitivity is the detection distance for a specified size of fire and type of fuel (“Standard Fire”) within a given time from the ignition of the fire. Standard Fire: A 0.3m x 0.3m (1ft x 1ft) Gasoline pan fire with max. wind speed of 2 m/sec (6.5 ft/sec). Sensitivity Ranges: The detector has four user selectable sensitivity ranges. For each range there are two response levels. 1. WARNING (Pre-alarm) 2.
2.
2.3 FALSE ALARM PREVENTION The detector will not provide an alarm or a warning signal as a reaction to the radiation sources specified below. NOTES: IAD = Immune at Any Distance. All sources are chopped from 0 to 20 Hz. Table 2-3.
3 OPERATION 3.1 VISUAL INDICATIONS Two LED-indications are located in the detector front window: i. Power LED (Yellow) Normal - the LED is ON BIT failure - the LED blinks (4 Hz) ii.
3.2 OUTPUT SIGNALS The detector controls the following outputs: • Alarm relay • Accessory relay • Fault relay • 4-20mA current output • RS-485 communication The detector can be in one of the following states. NORMAL: BIT: WARNING: ALARM: LATCHED ALARM: FAULT: The detector is functioning normally. The detector performs a Built In Test. The detector detected a fire and changed into its warning – pre-alarm state. The detector detected a fire and changed into its fire alarm state.
3.2.1 Optional latching: The detector includes a latched alarm output capability, which operates according to the DIP switch SW1-1 position. Upon the detection of a fire, the detection signal is latched until manually reset (disconnecting the power supply or performing a manual BIT). Latching affects the ALARM RELAY only. 3.2.2 Built-In-Test Successful Manual BIT will activate the following outputs according to SW1 switches.
Table 3-3.1: Function Switch SW1 SW. 1 2 ON Position Alarm latching - enabled Accessory relay activated at warning level 3 4 Automatic & manual BIT Successful manual BIT activates the Alarm relay and the 4-20 mA output turns to 15 mA for approximately 3 seconds. Successful manual BIT activates the accessory relay and the 4-20 mA output turns to 10 mA for approximately 3 seconds. Sensitivity range Sensitivity range. Accessory relay is used as End Of Line.
LEGEND: 0 = OFF 1 = ON LSB = Least Significant Bit MSB = Most Significant Bit. SWITCH SW2-7 and SWITCH SW2-8 are unused. Table 3-3.4: SW2 Address Setting SW2 ADDRESS 0 1 2 3 4 5 . . . 62 63 SW2-6 OFF OFF OFF OFF OFF OFF SW2-5 OFF OFF OFF OFF OFF OFF SW2-4 OFF OFF OFF OFF OFF OFF . . SW2-3 OFF OFF OFF OFF ON ON SW2-2 OFF OFF ON ON OFF OFF SW2-1 OFF ON OFF ON OFF ON ON ON ON ON ON ON ON ON ON ON OFF ON 3.3.
ANTI FLARE Anti Flare mode is selected to prevent false alarm in locations where fast flares may be present. The Time delay for fire alarm in this mode is from 2.5 to 15 seconds (mostly less than 10 seconds).
3.4 BUILT IN TEST A. General The detectors’ Built In Test (BIT) checks the following: • Electronics circuitry • Sensors • Window cleanness The detector can be set to perform the BIT automatically and manually (SW1-3 = ON) or manually only (SW1-3 = OFF). B. Principles If the result of a BIT is the same as the current status of the detector (NORMAL or FAULT), the detector's status is unchanged.
successful BIT's that have been encountered. As a result, the detector will resume its normal operation. Automatic BIT The detector automatically performs a BIT every 15 minutes. A successful BIT sequence does not activate any indication: A successful BIT does not activate any indicator. The FAULT relay is CLOSED (NORMAL). The POWER LED is ON (NORMAL). An unsuccessful BIT sequence activates the following: The FAULT relay is opened. 4-20mA output indicate FAULT (0 mA). The POWER LED (yellow) blinks (4 Hz).
4 ELECTRICAL SPECIFICATIONS 1st.Operating Voltage: 18-32 VDC 2nd. Power Consumption: Max. 150 mA in Stand-by Max. 200 mA in Alarm 3rd. Electric input protection: The input circuit is protected against voltagereversed polarity, voltage transients, surges and spikes according to MIL-STD1275. 4th. Electrical Interface: 1 POWER SUPPLY IN (+) 2 RTN 3 Manual BIT (-) 4 FAULT RELAY (N.O.) 5 (N.O.) 6 7 ALARM RELAY (COMM.) 8 (N.O.) 9 ACCESSORY RELAY (N.O.
4-20 mA Current Output: Terminals 11 and 12: FAULT NORMAL WARNING ALARM < 2 mA 4 - 6 mA 9 - 11 mA 14 - 16 mA ( Typical 0) ( 5) (10) (15) Communication Network: The detector is equipped with an RS-485 communication link that can be used in installations with computerized controllers.
REFLECTOR IR SENSOR WINDOW HOUSING P.C.
5 MECHANICAL SPECIFICATIONS 1st.Enclosure Aluminum enclosure, chromate coating and epoxy anamel finish. St. St. 316 electromechanical and pasivation coating 2nd. Explosion proof FM approval Class I Div. 1 Groups B, C and D; Class II Div. 1 Groups E, F and G. Cenelec approval EEXd II B + H2 T5 EEXde II B + H2 T5. CSA approval Class I Groups B, C and D; Class II Groups E, F and G. 3rd. Water and dust tight NEMA 250 type 6p. IP 66 and IP 67 4th. Electronic Modules Conformable coating. 5th.
6 ENVIRONMENTAL SPECIFICATIONS 1st.High Temperature Design to meet MIL-STD-810C, method 501.1 procedure II Operating temperature: +70 deg.C (+160 deg.F) Optional operating temperature: +85 deg.C (+185 deg.F) Storage temperature: +85 deg.C (+185 deg.F) 2nd. Low Temperature Design to meet MIL-STD-810C, method 502.1, procedure I Operating temperature: -40 deg.C (-40 deg.F) Storage temperature: -55 deg.C (-65 deg.F) 3rd. Humidity Design to meet MIL-STD-810C, method 507.
PART B TECHNICAL MANUAL - 27 -
7 INSTALLATION INSTRUCTIONS 7.1 SCOPE The "Spectrex" Model 20/20I is a self-contained Optical Flame Detector, designed to operate as a stand alone unit directly connected to alarm systems or automatic fire extinguishing systems. The detector can form part of a more complex system where many detectors and other devices are integrated through a common control unit. This chapter does not attempt to cover all of the standard practices and codes of installation.
C. ENVIRONMENT • Dust, snow or rain can reduce the detectors sensitivity and require more maintenance activities. • The presence of high intensity flickering of IR sources may affect sensitivity. 7.3 PREPARATIONS FOR INSTALLATION Installation should comply with NFPA 72E, as applicable to flame detectors. The detectors can be installed with the use of general-purpose common tools and equipment. 1 Verify the appropriate Purchase Order. Record the Part No. and the Serial No.
7.5 DETECTOR MOUNTING The detector may be mounted on a simple fabricated bracket, or preferably the optional Swivel Mount, Model 20/20-003. The Swivel Mount enables the detector to be rotated up to 40 degrees in all directions. 7.5.
2 The detector is now correctly located and aligned and ready for connecting to the system. 3 8 220 120 11 0 2 1 0 1 . A 3 FLAME DETECTOR 0 WITH BUILT IN TEST 132 2 9 6 3 DIA 7 4 PL. 3 1 4 1 7 IR 76.
0 6 1 5 7 . 0 DIA 7 4 PL. 76.
7.6 WIRING 1 Disconnect power. 2 Remove the four (4) protective set-screws from detector front. (Fig. 7 Item 1) 3 Refer to Fig. 11. Release the four (4) socket-head screws that secure the detector housing (Item 1) to its back cover (Item 5) Using HEX KEY No. 5. Hold the housing (Item 1) during the removal of the screws. With the screws removed, pull the detector housing (Item 1) from its cover (Item 5).
Alarm Relay (Terminal Numbers 6, 7, 8): The Alarm output is a change over contact relay (SPDT). Terminal No. 6 is the N.O. relay contact. Terminal No. 7 is the COMMON relay contact. Terminal No. 8 is the N.C. relay contact. Accessory Relay (Terminal Numbers 9, 10): The Accessory output is N.O. SPST relay at Terminals No. 9 and 10. The Accessory relay may act in parallel with the ALARM relay to activate another external device or it may provide a warning signal, depending on the position of SW1-2.
7 5 14 13 9 1 6 4 11 3 10 2 1 12 8 5 I/O BOARD 780052 9 SHIELD1 8 1 P1 P2 FIGURE 9: TERMINAL BOARD - 35 -
1 POWER (+) (18-32VDC) 2 RETURN (-) 3 MANUAL B.I.T. ACTIVATION (N.O. MOM.) 4 FAULT RELAY CONTACTS 5 6 N.O. 7 COM. 8 N.C. ALARM RELAY CONTACTS 9 ACCESSORY RELAY CONTACTS 10 11 4-20mA (OUTPUT) 12 4-20mA (INPUT) 13 R.S.-485 (+) 14 R.S.
W O N 1 2 3 4 5 6 7 8 O N SW3 1 2 3 4 S 1 9 O N SW1 1 2 3 4 5 6 7 8 1 8 7 2 3 6 P2 P1 1 2 9 1 3 SHIELD1 8 I/O BOARD 780052 1 4 6 5 4 8 10 9 11 7 14 13 12 5 5 FIGURE 11: IR 3 FLAME D ETECTOR WITH COVER REMOVED ## 1 2 3 4 5 Description Housing Securing Cable Cable Clamp Terminal Board Back Cover ## 6 7 8 9 - 37 - Description Inlet Conduit DIP Switch1 DIP Switch2 DIP Switch3
7.8 MODE SELECTION When wiring is completed the operational mode can be selected. Mode selection is achieved by means of 3 DIPswitches listed below: SW1 - Function switch – Fig. 11 Item 7 SW2 - Address switch – Fig. 11 Item 8 SW3 - Alarm Delay switch – Fig. 11 Item 9 Function Switch (SW1): Modes of operation are selected by DIPSwitch (SW1) (Item 7) according to the selection table in paragraph 3.3.a. Address Switch (SW2) The detector has the capability of acting as an addressable device.
8 OPERATING INSTRUCTIONS 8.1 SCOPE The following instructions are designed to obtain optimal performance from the detector over its life cycle. 8.2 POWER-UP 1 Apply power and wait approximately 60 seconds for the automatic self-test of the detector.
8.4 FUNCTIONAL TESTING Following is a testing procedure for proper functioning of the detector. 8.4.1 Manual BIT Test Important Note! If SW1 switches 4 and 5 are in their “ON” position the Alarm and Accessory Relays will be activated during a manual BIT, therefore, automatic extinguishing systems or any external devices that may be activated during BIT must be disconnected. 1 Verify that the detector is operated properly. 2 Initiate manual BIT.
1 Apply power to the system and wait up to 60 seconds for turning of the detector to normal state. Power led turns on. If the detector is on, skip this step. 2 Aim the Spectrex Fire Simulator Model 20/20-311 against the front of the viewing window of the detector, in a way that the radiation emitted by it is facing directly towards the detector. (See appendix E ) 3 Press the operation button once. After few seconds the Alarm led should be on for few seconds.
9 MAINTENANCE INSTRUCTIONS 9.1 SCOPE This chapter deals with preventive maintenance, describes possible faults in detector operation and indicates corrective measures. Ignoring these instructions may cause problems with the detector and may invalidate the warranty. Whenever a unit requires service, please contact the manufacturer or its authorized distributor for assistance. 9.
9.4.1 Power-Up Procedure Perform Power-Up procedure every time power is restored to the system. Follow the instructions in paragraph 8.2 above. 9.4.2 Functional Test Procedure Perform a functional test of the detector as described in paragraph 8.4 above. 9.5 MAINTENANCE RECORDS It is recommended to record maintenance operations performed on a detector in the system Log-book.
APPENDIX A Wire Selection Tables - 44 -
Appendix A. General Instructions For Electrical Wiring 1. Refer to Table 1 to determine the required wire gauge for general wiring, such as relay wiring. Calculate the permitted voltage fall with respect to loads current, wire gauge and length of wires. 2. Refer to Table 2 to select wire gauge for power supply wires. DO NOT connect any circuit or load to detectors’ supply inputs. Table 1:Maximum DC resistance at 68ºF for copper wire AWG # 26 24 22 20 18 16 14 12 10 Mm 0.12 - 0.15 0.16 - 0.24 0.30 - 0.38 0.
Table 2:Wire Gauge 1st.Select "Number of detectors" connected in one circuit. 2nd. Select "wiring length" per your installation requirements. 3rd. Refer to "power supply range" for voltage extreme applied.
APPENDIX B TYPICAL WIRING CONFIGURATIONS - 47 -
Appendix B. Typical Wiring Configurations 1 POWER (+) (18-32VDC) 2 RETURN (-) 3 MANUAL B.I.T. ACTIVATION (N.O. MOM.) 4 FAULT RELAY CONTACTS 5 6 N.O. 7 COM. 8 N.C. ALARM RELAY CONTACTS 9 ACCESSORY RELAY CONTACTS 10 11 4-20mA (OUTPUT) 12 4-20mA (INPUT) 13 R.S.-485 (+) 14 R.S.
Typical Wiring Diagram for 4 Wire Controller Controller Power Supply Alarm Loop First Detector Last Detector Terminal Terminal Block Block + 1 1 - 2 2 6 6 7 7 4 5 FIGURE 13: TYPICAL WIRING DIAGRAM FOR 4 WIRE CONTROLLER - 49 - EOL
TYPICAL WIRING DIAGRAM FOR CONTROLLERS WITH ALARM AND FAULT LOOPS CONTROLLER FIRST LAST DETECTOR DETECTOR MANUAL BIT 3 3 1 1 - 2 2 ALARM 6 6 LOOP 7 7 FAULT 4 LOOP 5 POWER + SUPPLY EOL RESISTOR 4 5 EOL RESISTOR 9 10 Notes: 1. FOR EOL RESISTORS VALUES SEE CONTROLLER MANUAL 2.
4-20mA WIRING OPTIONS DETECTOR ISOLATED DETECTOR 4-20mA : IN CONTROLLER TERMINALS CONTROLLER 12 + DET ELEC. SUPPLY 18-32V CURRENT SOURCE 18 - 35V MA 4-20mA : OUT 11 0.1-0.8K NON-ISOLATED DETECTOR TERMINALS CONTROLLER MA 4-20mA : OUT DETECTOR SUPPLY 18-32V DET ELEC. 11 CURRENT SOURCE 4-20mA : IN 0.1-0.8K 2 Notes: The detectors are factory set to isolated 4-20mA sink version. To work at nonisolated 4-20mA version (source), connect Terminal 12 to Terminal 1.
APPENDIX C RS485 COMMUNICATION NETWORK - 52 -
Appendix C. RS485 Communication Network Using the RS485 network capability of the IR3 detector and additional software it is possible to connect up to 32 detectors in an addressable system with 4 wires only (2 for power & 2 for communication). Using repeaters, the number of detectors can be much larger (32 detectors for each repeater) on the same 4 wires. When using the RS485 network it is possible to read each detector status (FAULT, WARNING, ALARM) and to initiate a BIT to each detector individually.
APPENDIX D Mounting the “de” version - 54 -
Appendix D. Mounting the “de” version 1 DETECTOR MOUNTING The detector may be mounted on a simple fabricated bracket, or preferably the optional Swivel Mount, Model 20/20-003. The Swivel Mount enables the detector to be rotated up to 40 degrees in all directions. 1.1 Swivel Mount Kit Use the kit from the paragraph 7.5.1 1.2 Swivel installation 1 Refer to Fig.7 and Fig 8.
2 WIRING Refer to Fig. 17. 1 Disconnect power. 2 Release the four (4) sloted-head screws that secure the chamber cover (Item 2). The chamber is now revealed. 3 Remove the protective plug mounted on the detector conduit inlet, pull the wires through the detector chamber (Item 7). Use a 3/4"-14NPT or M25x1.5 explosion-proof conduit connection to assemble the conduit to the detector. 4 Connect the wires to the required terminals (Item 4) according to the wiring diagram. See paragraph 2.1 and figures no.
112200 1 1 A 1 3 IR 3 FLAME DETECTOR 1 3 4 5 6 4 + 2 2 + DDOO 5 + + WWIITTHH BBUUIILLTT IINN TTEESSTT 113322 8 1 1 7 6 110088((44 11//44"")) 11//44""--2200UUNNCC--22BB OORR MM66xx11PP 88 PPLL..
1 POWER (+) (18-32VDC) 2 RETURN (-) 3 R.S.-485 (+) 4 R.S.
APPENDIX E Long Range IR3 Fire Simulator - 59 -
Appendix E. Long Range IR3 Fire Simulator Product Description The SharpEye IR3 Long-Range Fire simulator # 20/20-310 is designed specifically for use with the IR3 flame detectors. The Fire Simulator emits IR radiation in a unique sequential pattern corresponding and recognizable by the IR3 detector as fire. This allows the IR3 detectors to be tested under real fire conditions without the associated risks of an open flame.
Follow these instructions to simulate a fire: 1. Aim the Fire Simulator towards the detector. Target Point IR 3 FLAME DETECTOR WWIITTHH BBUUIILLTT IINN TTEESSTT 2. Press the operation button once. Fire simulation will last for 15 seconds. The detector will send an alarm signal (solid red LED). 3. For another fire simulation a 30 second time lapse is required between tests. 4. Make sure the optical window is clean and keep the Fire Simulator in a safe place when not in use.
Specifications Mechanical Explosion Proof Enclosure: NFPA (designed to meet) Class I, Division 1 & 2 Groups B, C and D Class II, Division 1 & 2 Groups E, F, and G CENELEC (approved by Nemko No. Ex 96D424) En 50-014 & EN50-018 Eex d IIB T5, IP67 Electrical Power: 9 VDC Max. 6 Rechargeable 1.2 VDC NiCd Batteries Current: 2.5A Avg. Charge 400mA for 14 Hours Environmental Temperature Range: -4o to 140o F (-20o to 60o C) Shock Protection: 1g (10-50hz) Physical Dimensions: 11 x 10.1 x 3.
For further details or assistance, contact: GasTech Australia Pty Ltd 106 Westpoint Centre Osborne Park 6017 Tel: 1800 999 902 Int: 61 8 9242 1869 Fax: 1800 999 903 Int: 61 8 9242 1959 Your Local Authorized Distributor: - 63 -
