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Technical M anual

1. Figure 1 Exploded view of all detector components Table 1Detector Assembly Parts List EST EP ET uereg Encontrada Lageren Detector Baseboard Mounting support fixing bolts 2 off M6 x 8 hex socket screw Detector Sensor Board 2 off M6 x 8 hex socket screw F Mounting bracket assembly screws 2 off M6 spring washers Detector Assembly Drawing Key 2 off M6 plain washers This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 WM _ CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 9 of 48 2 6 Detector Enclosure The detector electronics are housed in an enclosure certified for use in zone 1 hazardous areas The enclosure comprises of the enclosure cover and faceplate window the enclosure body and certification label and the mounting bracket The mounting bracket allows the detector s orientation to be adjusted vertically from O to 45 and allows an axial rotation of 10 to adjust the horizon Horizontal adjustment is to be provided by the client supplied detector mounting support The detector enclosure carries the certification label and serial number as shown below Certification labelling amp Serial number Mounting bracket 1c Figure 2 Detector Enclsoure and Bracket This document is strictly private and confidential reproduction without Micropack approval is prohibite
2. Parameter Detector Sensitivity kW O 10m Detector Range depth of field Vertical Field of View Detector Response Time Power on reset delay Horizontal Field of View Degrees O Standard Lens 1x pss ile E This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual y Micropack Ref 2200 5000 Page 47 of 48 10 Appendices 10 1 Acronyms Terms and Abbreviations CO CI Micropack Engineering Ltd 10 2 Drawings and lllustrations Drawing Number Description 2200 6001 CCTV FLAME DETECTOR FIELD OF VIEW GRAPHS 2200 6002 CCTV FLAME DETECTOR MOUNTING SUPPORT ARRANGEMENTS 2200 6003 CCTV FLAME DETECTOR CABLING ARRANGEMENTS This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack 10 3 HELP US TO HELP YOU TO QA Department Micropack Engineering Limited Fire Training Centre Schoolhill Portlethen AB12 4RR Tel 44 0 1224 784055 Fax 44 0 1224 784056 Email info micropack co uk suggest the following corrections changes be made to Section Marked up copies attached as appropriate Yes No Please inform me of the outcome of this change Yes No For Micropack Engineering Limited Actioned
3. Ref 2200 5000 Page 3 of 48 Table of Contents T Salet EE NET el Std AEN 6 1 1 WANDA E 6 1 2 HEEN 6 1 3 IN DORMANT Lee 6 Zz A A Aaa 7 2 1 FEATURES A eege 7 2 2 Visual Flame Red Uu ER 7 2 3 Surveillance SIM A A a ai 7 2 4 NC Le ee ET e EE 7 2 5 DELECIOF Giele ege ee eens etic eege EN ee E EEN deed EES 8 2 6 Detector lee ET 9 2 7 Detector Sensor BOIN EG 10 2 8 Detector Baseboard E 10 3 Application EU ENT 11 3 1 SHENG PE CUIFEINCINNS E 12 3 2 DELECHON COV CRAG EN 12 3 3 EXPOSUFe t Flare Rad OM ii ect eg 13 3 4 FICXIDINTY OF RG HEIEREN EE 13 3 5 MOUNTING e Eu ET EE 13 3 6 Thermal DISTUDUON E 13 3 7 OpUCA CONAM AU GIN siesta ee ies 13 3 8 EMCIOSCC ALGAS E 13 3 9 Fog and other airborne OBS CUNA a dt 14 2 10 Detector EAS dai 14 3 11 aca AAA 15 gdz Alternative TE 15 4 System Design RE e 16 4 1 Electrical ee a E 16 E EN Ee e 16 4 1 2 Mo o COTO E E A A E E 17 4 13 Electrical Connection SVIMDO EE 18 AA Earthing amp Screening Ee TEE 19 Ako e Tel UE 20 ANG AS4A85 COmmuuniCaOn EE 21 Belek VIGECOMIWISIOR e TL EE 21 ALN A geed luce legions fot 21 4 2 Connection Topologie S actinic eae ere iat tec ii hs Aas 22 AZM HP OUNLO tO OOM CUO Mets ae see O 22 4 2 2 Stand Alone Detector With Short Circuit Monitoring cccccconnnonnncncnnccnnnnnnnnccnnnncnnnonnannnncnnnnncnonnnnnnrrnnnnncnnnnnnnnennnaness 22 4 2 3 Stand Alone Detector Without Short Circuit Monitoring ooooonoonccnconconncononoc
4. Ref 2200 5000 Page 44 of 48 The live video signal suffers more potential problems than for RS485 communications because the signal is an analogue transmission and available for operator scrutiny The cabling is critical to video image quality Due to the nature of the video signal video corruption will appear differently on each detector installation The following chart is intended as a guideline for diagnosis of video problems Live Video Fault Does the Video NO System Cabling Precautions Use best practice and ensure all terminals and crimps are secure Check cabling ensuring that twisted pairs and screening are maintained throughout and to within 1 of the termination Ensure screens are properly earthed clean earth system OV Ensure adequate segregation from Power amp RS485 Communications lines YES Window appear the video window appear for all other YES No Video Route Found Check device list entry for detector video routing is correct NO Is the video image r Master HUB Communications Fault Check for intermittent communications fault with Master HUB an image Is there an Image or Blue or Black Is the image blue for all ther detectors Black Replace Baseboard NO and or Detector al No Video Signal Check device list entry has correct video routing Check cabling is Blue YES If problem pers
5. 24 Vdc IN re 17 ALARM RELAY een A 1 RS485 TO HUB CONTROLLER OPTIONAL Pee E Lo FAULTRELAY Le fe H Ea i 1 VIDEO SIGNAL OPTIONAL 4 20mA y CLEAN EARTH v e Figure 12 4 20mA Output This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack 4 2 5 Stand Alone Detector digital inputs In a stand alone configuration the detector can be automatically taken out of dark video by pulsing 24V dc to terminals 13 and 14 for approximately 5 seconds The camera overlay features can be switched on by pulsing terminals 15 and 16 for approximately 5 seconds Both these options will stay on for the default time of the dark video configuration 4 2 6 Multi drop Looping In a multi drop loop connection multiple detectors are connected to the power RS485 and Video cables All line termination links for the RS485 and Video signals must be fitted at the detector at the end of the loop Detector A in the example below all other detectors have their links removed Detector B etc The example shown below is for twisted pair video Coaxial video is not possible with this arrangement 18 1 O HUB 14 2 a 2 Controller 15 3 SE RS485 Line 16 4 Li 4 Termination 17 5 l 18 Detector
6. The video twisted pair cable is connected to the detector Video signal on terminal 9 and the Video signal on terminal 10 It is possible to multi drop more than one detector using twisted pair video cabling for details refer to the following sections The video line termination link J4 located on the detector baseboard should be fitted if the detector is either the last detector of a multi drop loop or where only one detector is fitted A maximum of 6 detectors can be connected in a multi drop loop 4 1 8 Video Coaxial The video coaxial cable is connected to the detector Video signal on terminal 9 coax conductor and the Video ground on terminal 11 coax screen Care should be taken when connecting to commercial video equipment as the Video ground is often connected to the equipment OV or earth This can result in the detector supply current returning through the coaxial cable screen which may affect the video quality In such cases the detector supply cables should be increased in size to reduce cable volt drop to a minimum The video line termination link J4 should not be fitted It is not possible to multi drop more than one detector using coaxial video cabling This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 22 of 48 4 2 Connection Topologies 4 2 1
7. Taken from discussion with Focal Inc engineering staff November 1998 Based on maintaining high quality cut and polished spliced connections typically lt 0 25db Taken from Anixter Canada quotation 09522 and technical attachments for a typical multi mode fibre Taken from Coe Ltd S 400 technical data sheets later revised from 12db to 14db This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 WM _ CCTV Visual Flame Detector Technical Manual Micropack 5 5 1 Ref 2200 5000 Page 30 of 48 Experience has shown that poor installation and commissioning practice may result in an unreliable fire Installation detection system that is prone to malfunction and unwanted alarms and at the same time fails to meet the site performance targets Before installing the detector it is important to take into account where it is to be located and how it is to be mounted Mechanical Installation When locating the detector consideration should be given to maintenance access to the detector The detector mounting should be secure and vibration free It is advisable to check the detection locations prior to fabrication of the mounting supports as changes are frequently made during construction at site which can affect detector coverage The installation should allow subsequent detector removal for maintenance or repair to be easily achieve
8. Technical Manual y Micropack Ref 2200 5000 Page 27 of 48 Vs Vd Vid lt 4V min gt min V a Potential across each conductor limited to AV VS min Minimum Supply Voltage Vdinin Minimum Detector Voltage 18V V Pd xN Pd 18 watts per Flame Detector inc Heater pd Vs or 6 watts excluding Heater R ne as N Number of Detector L Km Lkm Cable Length In Kilometres Rgm Maximum Conductor Resistance per Kilometres Equation 2 DC Supply Conductor Resistance Calculation Use the value of Ax calculated above to select a suitable gauge of conductor alternatively to calculate the maximum cable length from a known conductor resistance swap Du and Lkm in the above equation The supply voltage and cable cross sectional area which equates to its resistance limits the maximum cable length increasing the supply voltage up to a maximum of 32V can dramatically increase cable length Prudence dictates that a cable is selected with a lower resistance than calculated above with sufficient allowance for the effects of crimps terminals and ageing which can increase overall resistance Where a single cable cross sectional area cannot be found to satisfy both the needs of the power and signal conductors consideration should be given to using multiple paralleled conductors of a smaller cross section for the power 4 4 3 Video Coaxial The video cable should be low loss attenuation 75R coaxial cable with a
9. Voltages greater than these will exceed the common mode input range of the RS485 and Video drivers Power supply cable selection is described in the Power Supply section 4 1 4 Supply Cable Volt Drop _ _ gt Cable Resistance RS485 or HUB or V Video Signals Video Switch Supply Supply Detector s Minimum Detector Supply Current Cable Resistance Cable Volt Drop 4V Max V Current x Resistance OV Supply Figure 8 Detector Power Supply Cabling This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 21 of 48 4 1 6 RS485 Communications The RS485 twisted pair cable is connected to the detector RS485 A signal on terminal 5 and the RS485 B signal on terminal 6 It is possible to multi drop more than one detector using twisted pair cabling refer to the following sections The RS485 line termination link J2 an J3 for channels A B respectively located on the detector baseboard should be fitted if the detector is either the last detector of a multi drop loop or where only one detector is fitted Each detector represents one RS485 unit load A maximum of 32 devices either detectors or other RS485 compatible equipment can be connected to a single transmission line 4 1 7 Video twisted pair
10. 1 1 Warnings e This equipment is certified for and intended for use in potentially hazardous areas Install and use the equipment in accordance with the latest regulations e For UK installations BS EN60079 14 Electrical Installations in Hazardous Areas and BS EN60079 17 Inspection and Maintenance in Hazardous Areas should be strictly observed e For installations in North America the National Electrical Code NEC should be strictly observed e Elsewhere the appropriate local or national regulation should be used e The equipment must be properly earthed to protect against electrical shock and minimise electrical interference e Do nat drill holes in any housing or enclosure as this will invalidate the explosion protection e Ensure that the enclosure lid is fully tightened and locked into position before energising the equipment e Do not open the enclosure in the presence of an explosive atmosphere e All permits and proper site procedure and practises must be followed and the equipment must be isolated from the power supply before opening the enclosure in the field e Operators must be properly trained and aware of what actions to take in the event of a fire being detected e Repair of equipment should only be performed in a safe area and by trained personnel 1 2 Cautions e Use only approved parts and accessories with this equipment e To maintain safety standards commissioning and regular maintenance should be perform
11. A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 32 of 48 Operating Instructions Many of the detector features are only available via the RS485 communications Throughout this section these features are described with reference to the CCTV Display and Alarm Handling system Refer to the CCTV Display and Alarm Handling System technical manual for a detailed description of operation In general this section will only describe the features available at the detector and not how these are accessed and represented at the PC display The following features are available by selecting the detectors local menu oda Reset alarm Inhibit ES went this gives access to the following detector features Eonnect Get settings Show video Grab picture Eirmware restart Upload new firmware FReQuest comme test Thresholds Acknowledge Alarms Acknowledge alarm is a display only function and does not affect the detectors operation To acknowledge an alarm condition select the detectors acknowledge option Reset Alarms The detector latches into the fire alarm condition until the operator resets the alarm s the alarms must be acknowledged before the reset is selected To individually reset detectors select the reset alarm option If the fire condition is no longer present the alarm condition will clear Inhibit Alarms The inhibited condition determines how the display and control
12. B 6 19 C D etc 7 20 O J1 Power Supply 8 2l lt gt J2 Line Termination A S Video Switcher 22 10 7 2 23 J3 Line Termination B 11 y 24 J4 Video Termination 12 Clean Earth Detector A 20 QO J1 Power Supply amp J2 Line Termination A 23 J3 Line Termination B 11 24 J4 Video Termination 12 Figure 13 Detector Mulit drop Loop Cable Connection 4 2 7 Coaxial Video Connection This arrangement is similar to the twisted pair example except coaxial cabling is used for the video signal All line termination links for the RS485 and Video signals must be fitted at the detector 13 1 24Vdc 1 HUB 14 2 OVdc 2 Controller 15 3 3 RS485 Line 16 4 RS485 A 4 Termination 17 5 RS485 B y 18 Ds 6 Clean Earth e etector gt 20 lt gt J1 Power Supply 8 2 2 Line Termination 1 3 y Coaxial Video 7 Video Switcher 22 10 Re 2 J3 Line Termination 2 23 11 24 J4 Video Termination 12 Figure 14 Detector Coaxial Cable Connection This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 25 of 48 4 3 Detector Thresh
13. By Response This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000
14. Point to Point Connection lt gt In a point to point connection a single detector is connected to the power RS485 and Video cables This arrangement has the best reliability and availability since any single failure in the field equipment or cabling affects only the one detector All line termination links for the RS485 and Video signals must be fitted at the detector The example shown below is for twisted pair video 13 1 24Vdc 1 mE E 2 OVdc 7 2 Controller 19 3 ee RS485 Line 16 4 RS485 A w 4 Termination 17 5 CL RS485 B 18 nn 19 Detector gt 20 O J1 Power Supply 8 21 Vi il 22 dete Temiang BE o gt Video Switcher 23 ES J3 Line Termination B 11 y 24 J4 Video Termination 12 Clean Earth Figure 9 Detector Point to Point Cable Connection 4 2 2 Stand Alone Detector With Short Circuit Monitoring lt em gt In a stand alone configuration the detector alarm and fault relays can be connected to a ga party Fire Alarm Panel The configuration shown below shows a series device connected to the alarm relay and an end of line device connected to the fault relay this will enable short circuit monitoring The Hub controller and Video Switcher outputs are optional and must be connected via twisted screen cables if required PE f i 24 Vdc IN FIRE ALARM PANEL EN T SERIES DENI
15. Response Characteristics Methane or Methane intense source 48L min Ethane 28L min 10m 33 feet Propane 20L min Butane 15L min 10m 33 feet Diesel 0 3m x 0 3m pan Crude Oil heavy fuel oil 0 5m x 0 5m pan 10m 33 feet Wax Inhibitor Clear 10 0 3m x 0 3m pan 10m 33 feet Anti Foam Surflo AF 300 0 3m x 0 3m pan 10m 33 feet Wood Stack 0 3m x 0 3m crib 10m 33 feet nHeptane 0 3m x 0 3m pan 10m 33 feet Gasoline 0 3m x 0 3m pan 17m 56 feet This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 15 of 48 The detector sensitivity is inversely proportional to distance approximately equivalent to a square law For example with the detector sensitivity set to 10kW 10m the detector would equally respond to a 2 5KW fire at 5m or a 22 5kW fire at 15m 3 11 Detector Field of View The CCTV detector does not have a traditional cone of vision like a conventional IR flame detector The detector s field of view is a rectangular pyramidal shape and represents a radial projection of the detector rectangular sensing element Refer to attached drawing 2200 6001 for the actual field of view footprints 3 12 Alternative Lenses In special applications requiring long range operation or a specific field of view it is possible to change the detector s coverage by
16. Video Isolator s to allow are not powered from the PC s to be powered from local supply panel supply earth must be within 5V System Clean Earth In distributed systems with multiple DC DC power supply units all OV supplies must be connected together to a common clean earth Where this is not possible each system can either be connected to a local clean earth so long as the maximum potential difference between each earth does not exceed 4 to 1Vdc alternatively the Video and RS485 signals can be galvanically isolated from the central system Where earth fault monitoring is used care should be taken to ensure that the system OV to earth potential is not exceeded The detector enclosure is to be connected to a local earth and the detector cable screens shields should be cut back to the crotch and not terminated within the detector If the detector enclosure cannot be connected to a local earth then care should be taken to ensure the cable armour braid provides a suitable earth or that the enclosure earth stud external is separately connected to a suitable earth point using a single core 4mm earth cable This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 20 of 48 All detector cable screens should be connected to the local clean earth at the control panel Th
17. and the detector should wherever possible be fixed to comparably rigid mountings 3 6 Thermal Disruption Thermal convection plumes and exhaust gas plumes generally exhibit a visual mirage effect In most cases this does not affect detector operation or sensitivity The detector does not respond to black body radiation near the exhaust 3 7 Optical Contamination There are many sources of contamination such as oil water deluge water rain and sea spray snow and ice and internal misting The design of the detector incorporates an internal heater and hydrophobic coated glass inner and outer surfaces to assist in maintaining the optical surfaces Excessive contamination of the detector faceplate will result in an increased maintenance requirement and potentially reduce the detector s sensitivity Where detectors are mounted at low level care should be taken to avoid contamination such as water and oil from equipment above the detector Care should be taken in siting the detector to minimise the likelinood of such contamination 3 8 Enclosed Areas In enclosed areas if dense smoke is expected to accumulate at the onset of the fire the detectors should be mounted 1 to 2m below the ceiling level This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack 3 9 Fog and other airbor
18. one change at a time changing more than one thing makes diagnosis very difficult e Check the most obvious possible causes first e Work systematically through the problem e Keep good notes on the original problem each step taken and the results observed 8 1 1 Led Indication Detector Status The detector LED indicator is used to reveal the detectors current state as shown below Steady OFF No Power EI Ram Figure 17 LED Status Diagnostic Chart Refer to the following sections on diagnosing Power Supply RS485 communications and Video faults This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual y Micropack Ref 2200 5000 Page 42 of 48 lf the detector LED indicator is OFF then there may be a power supply fault as shown below 8 1 2 Power Supply Power Failed Detector LED OFF Is PowerSupply ON Turn it ON Ja NO Found the break Measure the voltage at Baseboard Terminals 1 amp 3 24V 2 8 4 OV Power Distribution Fault Check the polarity source fuse cabling crimps and junction boxes Is 24V Present amp correct Polarity Plug the detector into baseboard Measure the voltage on yo the detector heater Detector LED L 24V and screw head E SS ON Ze ches CED condilion H1 2
19. should be connected to a local earth point EN Remove the blanking plug s from the enclosure body gland entries Cm Fit approved cable glands using sealing washers to maintain ingress protection Prepare the cable tails The cable screens should be cut back to the crotch at the detector and insulated from contact with the enclosure or any other local earth The twisted pairs should be maintained to within 1 25mm of the termination Cable tails should be 8 200mm long Where plastic junction boxes are used the cable screens shield should be maintained to within 1 25mm of the termination and fully insulated JN Where unscreened cables are used for panel wiring then all cables must be suitably twisted into pairs and video cables should be segregated from other signal sources All cable screens shield should be connected to the local clean earth at the control panel The screens and twisted pairs should be maintained to within 1 25 4mm of the terminations Following installation completion the cabling shall undergo full earthing and insulation tests with baseboard removed Figure 16 Detector Electrical Installation Open enclosure body revealing the flame path and detector electronics Enclosure cover locking screw A Gland Entry Earth Stud This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 6 1 6 2 6 3
20. the factory and must only be changed by Micropack authorised engineers e Fire sensitivity e Intensity Threshold Level default 250 e Exposure Control Enable default ON Max Exposure Time Auto Exposure Stop default 600 or 1240 e Target Intensity Level 170 e Dark Video default ON 6 11 Function Testing The detector should be function tested using the Visual Flame Detector Test Torch which has been specifically design to provide a convenient means of field testing the flame detector Refer to the test torch user manual for instructions on its use This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual Micropack d D Maintenance and Testing The maintenance schedule is intended for guidance only The actual level of maintenance required is dependant on the detectors operating environment and the likelinood of damage or the rate of contamination from oil or sea spray deluge Where there is no operating history it is advisable to regularly review the maintenance reports and adapt the maintenance period to the operating environment For function testing refer to the test torch user manual for instructions on its use EE EE Detectors that require maintenance should be taken off line and inhibited Ensure that panel wiring and Detectors which require to be opened up will need
21. the hazard develop The detectors can be individually configured to operate as a combined CCTV and Flame detection system or as a CCTV surveillance system only with the flame detection capability disabled 2 4 Detection Coverage The CCTV system can detect fires of 10kw Radiant Heat Output RHO or greater at 20m within a 90 field of view The detectors will only respond to visible flames within their field of view In this way the CCTV system provides a high level of discrimination from unwanted sources of false alarm The detectors also reduce the likelihood of cross propagation of alarms caused by fires or products of fires burning outside its field of view This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual Micropack d 2 5 Detector Overview The detector is a single standalone unit and comprises of two primary components the detector enclosure and the camera detector assembly The camera assembly consists of three electronic printed circuit board pcb assemblies these are the termination board the sensor board and the processor board The camera detector assembly is pre assembled into the enclosure and comes complete with all parts required for installation excluding the client mounting support glands and cabling Each detector contains the following parts Mounting Support Y
22. 3 or 4 OV Replace Baseboard NO Is 24V Present YES Replace Detector Figure 18 Power Supply Diagnostic Chart When investigating power supply faults it is important to check that all voltages are within the detectors operating range 18V to 32V under full load conditions as the voltages measured under no load conditions can be misleading This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual y Micropack Ref 2200 5000 Page 43 of 48 RS485 Communications 8 1 3 If the RS485 communications are poor or completely failed the problem could be due to a great number of possible causes If the communications to the detector were formerly OK this simplifies the number of possible causes to those shown below Familiarity with this chart will also help diagnose communications faults during commissioning System Cabling Precautions Check cabling ensuring that twisted pairs and screening are maintained throughout and to within 1 of the termination Ensure screens are properly earthed clean earth system OV Use best practice and ensure all terminals and crimps are secure Communications Faul Meee formerly 2 y Restart Master Hub Ensure adequate segragation from Power Signals Did this cure the Fault
23. 6 Table 4 Detector Baseboard Terminal Descriptions AAA 17 Table 5 Default Detector Threshold EMMA Auster ENEE DEENEN EEN 25 Table 6 Typi al cable lengths EIER eege 26 Table 7 AWG Conversion Ee 26 Tables Video Coaxial Cable GharacteniStGs ir AAA AAA A A 27 Table 9 Video Twisted Pair Gable Characteristics ri as 28 Table 10 RS485 Communications Cable Characteristics ooooooocccnnnnccnnnononncnconnconononannnnnnnnonono nana ncnnnnncnnonn nan rrnnnnnnnnnnnnnnrncnnnnonnnnnns 28 List of Equations Equation 1 Meteorological Optical Range M O R Calculation oooococnccconoccnncccconcnoconnnnnnnccnnnnnononnnnnccnnnnnnn nono nnnnrnrnnnnnnnnnnnnrrrcnnncnnnnnns 14 Equation 2 DC Supply Conductor Resistance Calculaton nan nrnnnnnnnononnnnrnrnnnnnnnnnnas 27 Equation 3 Video Coaxial Cable Length Calcula rata 27 Equation 4 Characicnistic lmpegence Calc ON WEE 28 This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 6 of 48 1 Safety Instructions For the correct and effective use of this equipment to maintain safety and avoid hazards it is essential that you read and understand these instructions and act accordingly BEFORE installing operating or maintaining the equipment Pay particular attention to all Safety Warnings Cautions and Important Notices
24. A Screening Requirements It is important to ensure that the system is correctly connected to earth Incorrect or poor earthing can adversely affect system operation and may result in intermittent RS485 communications and video image corruption The system OV should be connected to a clean earth at only one point generally this should be at the panel power supply or OV bus bar Where PC equipment is connected to the RS485 and Video signals care should be taken to ensure that the PC s and Panel s power supply are at the same ground potential Even small differences in earth potentials can cause an earth fault current to flow resulting in video corruption Where this is not possible either the PC s local supply should be isolated and the PC s connected to the system clean earth or alternatively the Video and RS485 signals should be isolated The Micropack twisted pair to BNC video converter V7P4 and RS232 to RS485 converter RS2485 F can be used so long as the maximum potential difference between each earth does not exceed 6V as shown below t RS2485IF Local Earth lt _ 4 RS24851F T RS232 to lt RS232 to 485 Interfac 485 Interface gt VIP4 Video Ai gt A Isolator PC DISPLAY Local Supply Mains Local Earth AC AC Isolator botal Earth Optional Isolation if PC s Optional
25. CE l RS485 TO HUB CONTROLLER OPTIONAL E Lao FAULTRELAY Lo e H END OF LINE DEVICE EN E 1 VIDEO SIGNAL OPTIONAL 24 Vde y CLEAN EARTH Figure 10 Stand alone Detector With Short Circuit Monitoring This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Y Ref 2200 5000 Page 23 of 48 4 2 3 Stand Alone Detector Without Short Circuit Monitoring lt EM gt In a stand alone configuration the detector alarm and fault relays can be connected to a 3 party Fire Alarm Panel The configuration shown below shows no series device connected to the alarm relay this will not enable short circuit monitoring The Hub controller and Video Switcher outputs are optional and must be connected via twisted screen cables if required 1 24 Vdc IN FIRE ALARM PANEL EN i i y RS485 TO HUB CONTROLLER OPTIONAL 1 VIDEO SIGNAL OPTIONAL y CLEAN EARTH Figure 11 Stand alone Detector Without Short Circuit Monitoring 4 2 4 4 20mA Output Connection The camera can be configured to provide a 4 20mA output option If pins 22 and 23 are linked then current output from pin 20 when connected to zero volts may be monitored The current ranges for this output may be configured within the thresholds option for the flame detector to be found within the display Software re i a
26. Channel B Line Termination Link Not Terminated 120R Terminated Video Balanced Line Termination Link Not Terminated 150R Terminated The links should be set appropriately for the detector cabling topology as described in the following sections This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual Ref 2200 5000 Page 17 of 48 y Micropack 4 1 2 Field Terminations There are 24 field terminals available these have the following function Table 4 Detector Baseboard Terminal Descriptions Terminal Function Description Notes Comment 24Vdc Supply A Input Terminal 24V OV 24V OV RS485 A Channel A RS485 B Channel A RS485 A Channel B Factory Use Only RS485 B Channel B Factory Use Only Y Video Signal Output Coax or Balanced Line DN OV Supply Common OV Supply Common JE DER ul gt Y Video Signal Output Balanced Line Only OV Video GND Coax screen X Screen Terminal electrically isolated terminal ee 24V 24Vdc Pulse supply For Automatic Camera Bright Video OV OVdc Pulse supply For Automatic Camera Bright Video LS 24V 24Vdc Supply For Automatic Video Overlays OV OVdc Supply For Automatic Video Overlays NO Detector Fire Alarm Relay 0 Normally Open NN wesch wesch P 00 NC Detector Fire Alarm Relay 0 Normally Closed Dete
27. Perform a communications test on the suspect camera Transient Problem If persists treat as poor communications y ermination Cabling or Detector HUB Baseboard Fault Check terminations links Are their NONE or POOR Comms Check Detector LED Status Fee Power What Fault are set correctly Healthy Rectify Power Failure ad e ar Alar is the LED SE or Replace Detector Check cable continuity status SE ensure all crimps terminals screens and cabling are correct H problem persist check replace if needed associated HUB Controller G EE ren A deem Enge AR EEE AA Replace Detector Baseboard Change the device address to the correct one for the detector tag location Default Baseboard Address Check for address 1200 on the Display PC Device Status window s Healthy List Are their Comms ER OK YES y Is Detector Address Present y Total Cable Fault Investigate as poor E Check for open or short circuit connection and reversed cabling Return to start Figure 19 RS485 Communications Diagnostic Chart This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 y Micropack 8 1 4 Live Video Images CCTV Visual Flame Detector Technical Manual
28. Show Video To display live video images from the detector select the show video option Where two or more detectors are connected on a multi drop loop all the detectors should be configured to have multidropped video configured When instructed by the HUB to show video only the requested detector turns ON its video output If there is only one detector on the loop the video output should be set to enable on power on i e permanently ON 6 6 Firmware Restart Selecting the firmware restart option will restart the detector electronics and firmware this is equivalent to a power on cycle The restart will take up to 8 seconds to complete during which time the RS485 communications and live video image will be lost and any acknowledged alarm condition will be reset Following a power on or firmware reset there is a delay of up to 10 seconds before the detector resumes operation 6 7 Grab Picture It is possible to grab three image formats from the detector these are used for diagnostics and record keeping The desired image type is selected in the display preferences and the image can be viewed by selecting the detector grab picture option The grab picture feature is also used for the detectors alarm map and alarm masking facilities described in the following sections e Raw greyscale format highest fidelity slow to transfer e JPEG compressed greyscale format much faster transfer slight loss of fidelity e Live Thresholded
29. ack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 12 of 48 3 1 Siting requirements The following guideline have been based on operational feedback reflecting commonly experienced problems which can be traced to a failure to observe the following e Ensure the mounting position is free from vibration or movement e Prevent accidental knocking or forcing out of alignment e Where snow or ice build up is likely the heater should be enabled e To ensure the best possible video image the detector should be facing away from the sun e Isolate as far as possible from local electrical interference sources e Sufficient detection to ensure adequate coverage for all likely hazards e Minimise exposure to contamination of the detector face plate e Ensure ease of maintenance access to detector i e direct ladder or scaffold access All these issues are of crucial importance to a successful installation and they should be afforded great attention during the detailed design construction and commissioning phases of the work 3 2 Detection Coverage Detection can be located from computer models or from site surveys The detectors should be aligned to view the intended hazard taking into account any obstruction and congestion Vertical View 65 5m 10m 15m 20m Obstruction Note The detector provides fire alarm coverage withi
30. ctor Fire Alarm Relay 0 Common Contacts shown quiescent i e de energised NC Detector Healthy Relay 1 Normally Closed NO Detector Healthy Relay 1 Normally Open C Detector Healthy Relay 1 Common Contacts shown quiescent i e energised 4 20mA output co O N O N GA gt EN Ke This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack 4 1 3 Electrical Connection Symbol For convenience the following electrical schematic block diagram is used to represent the detector Digital Network Address Supply Inputs A kW Fire Size RHO Digital lt gt Enclosure Heater Supply Inputs p gt Multidropped Video B Fire RS485 Alam Visual Flame G i Relay Detector RS485 Ch2 COIN OO Oo BR OO NM Healthy Relay O J1 Power Supply amp J2 RS485 Termination Ch1 Video 4 20mA J3 RS485 Termination Ch2 not used J4 Video Termination Screen Figure 7 Electrical Schematic Block Diagram This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 19 of 48 4 1 4 Earthing
31. d Micropack Engineering Ltd 2000 WE CCTV Visual Flame Detector Technical Manual J Micropack Y Ref 2200 5000 Page 10 of 48 2 7 Detector Sensor Board The detector sensor and processor boards 3 contains the imaging sensor signal processing and communications hardware The sensor processor board assembly plugs into the baseboard on four alignment pillars All four fixing pillars B must be fitted and fully tightened When removed from the enclosure the sensor board should be protected from mechanical and electrostatic damage The key elements of the sensor board are shown below e id G Imaging sensor Mode os PT GEM E Detector status BER een ee See indication LED Master Firmware Reset pushbutton Sensor board fixing pillars B Enclosure heaters Figure 3 Detector Sensor Board 2 8 Detector Baseboard The detector baseboard 2 comprises of the field interface hardware screw terminals and hardware configuration links J1 to J4 The baseboard mounts into the enclosure body on two fixing screws C Both screws must be fitted and fully tightened When removed from the enclosure the baseboard should be protected from mechanical and electrostatic damage The key elements of the baseboard are shown below Terminals 1 to 12 Detector Hardware Configuration Links Baseboard mounting screws C Terminals 13 to 24 Figure 4 Detector Baseboard This document is strictly private and con
32. d The detector should be fixed to a stable supporting structure using the mounting bracket provided The supporting structure must allow for horizontal adjustment of the detector orientation The support structure should be in place prior to detector installation Examples of typical mounting supports are shown below The detector sensor board and baseboard electronics should be removed from the enclosure prior to installation The detector electronics shall be protected form mechanical damage and external sources of EMI such as X rays HEI and electrostatic discharge Fit the mounting bracket to the support structure using the bolts provided The detector bracket should be oriented to provide the desired coverage The hex head bolts should be fitted to the enclosure body prior to mounting to the bracket The detector enclosure body should then be fitted to the mounting bracket The bolts locate into key slots in the bracket Twist the enclosure to locate the bolts these are then tightened using a 6mm Allen key Lock Unlock gt Fixing Screw D shown locked in bracket key slot Enclosure body bracket fixing screws D and key slots Mounting bracket adjustment fixing screws F Mounting bracket support fixing E bolt holes Figure 15 Enclosure Mechanical Installation This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visua
33. d delete all masks from the JPEG image and select send to detector from the display menu this sends a blank mask to the detector e On the display request the current alarm mask the mask will be overlaid onto the JPEG picture e To edit the masks on the display select the edit tool New masks are drawn as polygons over the JPEG image To update the detectors mask select send mask to detector from the display menu 6 7 4 Alarm Map Feature The alarm map facility is intended for used by Micropack trained technicians The detector maintains a visual 2D map of each fire alarm to assist in post event analysis The map is a single two dimensional image of all the fire alarms since the last firmware restart To clear the alarm map it is necessary to restart the detector firmware The example shows the alarm map for the fire test shown previously The current alarm map can be displayed in the following manner E CAM 02 e Setthe display preferences for a JPEG picture e Select the detector and grab bitmap e Request the current alarm map the map will be overlaid onto the JPEG e The alarm map can be edited as described in the alarm mask section e f required the alarm mask can be requested the alarm mask data is then merged with the alarm map image e f required the alarm map can be sent to the detector as a new alarm mask This document is strictly private and confidential reproduction without Micropack approval is prohibit
34. detectors current threshold setting configuration to be viewed and changed Note that these thresholds significantly affect the detectors operation detection performance may be compromised as a result of unauthorised changes The following thresholds are available for trained personnel only Camera addr 1201 Name DFC 001 Sensitivity kM at 10m Hae monitor mode els go a k fe Sl fF 50 e Intensity threshold Factory set 250 e Sensitivity Fire 10 RHO 10m Optional Feature Settings e Exposure Control FEATURE SETPOINT e Exposure Control Enable Factory set Exposure conto Enable 170 ig Max Exposure Time Factory set minimas esp time plese ENEY e Target Intensity Factory set Heater contro W Enable Dark Video Enable Factory set Alarm latch timecuat Be secs Diente siden Enable fo SETCE e Heater Control R S lnbeneitin threshold 250 Gel Geet Device number 201 201 is Heater Set Point Factory set Video multidropped Enable e Device Number Network Address Video overlays Enable Optintegrity check I Enable e Multidropped Video Enable EERE md bl 4 20m e Overlays Enable Ser Close Note Factory set options are only to be changed by Micropack personnel The settings shown in the above graphic have been tested and approved by Factory Mutual D The FM Approval is void if these settings are adjusted 6 10 1 Heater Control and Set Point The det
35. e screens and twisted pairs should be maintained to within 1 25 4mm of the terminations at the detector within all junction boxes and at the control panel Where unscreened cables are used for panel wiring then all cables must be suitably twisted into pairs and video cables should be segregated from other signal sources 4 1 5 Power Supply The detector has two supply connections supply A amp B the 24V supplies are diode OR together and the OV are common Either or both can be connected to the detector The detector power supply connects to terminal 1 or 3 for 24Vdc and terminal 2 or 4 for OV The power supply loop through link J1 located on the detector baseboard is normally not fitted Fitting link J1 connects the two 24V supplies together The detector requires an absolute minimum supply voltage of 18V measured at the detector terminals The system power supply voltage and power distribution should be arranged such that on the longest cable run the detector s has a supply voltage of greater than 18V All detectors must share a common OV supply In distributed systems with multiple DC DC power supply units all OV supplies must be connected together Where this is not possible the RS485 and Video signals may need to be galvanically isolated such as with a fibre optic transceiver To prevent RS485 communications or video corruption the maximum volt drop on the OV return must not exceed 4V or 1V refer to figure below
36. ector heater can be enabled by setting the heater control option to ON the default setting has the detector heater set to disabled The heater temperature set point can be set to the desired temperature the default setting is 16 C The heater is intended to prevent ice and condensation forming on the detector optics it is recommended that the set point is only changed after consultation with Micropack Engineering Ltd The heater increases the detectors power consumption by up to 14W per detector ensure that the power supply power distribution and cabling are rated sufficiently before enabling the heater This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 38 of 48 6 10 2 Device Number All devices on the RS485 network must have a unique network address in the range of 001h to 1FFh and 201h to FFFh hex The detector defaults to the reserved address 200h hex this address is used by the system for a new or unconfigured detector and must not be used as an address for any other detector Note To prevent address conflicts since all new detectors have the same address only one new or unconfigured detector can be added to the system at a time 6 10 3 Video Multi dropped The video multi dropped option is disabled as default the detector s live video output is th
37. ed Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 36 of 48 6 8 Upload Firmware The upload firmware is intended for used by Micropack trained technicians The detector firmware its software programme can be updated by selecting the upload firmware option The dialogue box allows detectors to be programmed individually or all together It is recommended that the detectors be programmed individually and that a successful upload is confirmed by manually checking the firmware revision in get settings Always ensure the latest firmware version has been installed onto the display PC since this is used to both programme the detector and to verify the detector s firmware is at the correct revision Uploading firmware can take several seconds during which time the operator should not begin a second upload or grab picture When the upload is completed the detector will automatically initiate a firmware restart 6 9 Request Comms Test This is a feature of the Hub Controller and allows the RS485 communication link between the detector and the Hub to be tested This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 37 of 48 Deng 6 0 6 10 Get Thresholds Detector Controls This function allows the
38. ed by qualified personnel 1 3 Important Notices e Pay attention to the guidelines given throughout this document e If in any doubt ask your local sales representative or contact Micropack Engineering Ltd e Micropack Engineering Ltd take no responsibility for installation and or use of its equipment if this is not in accordance with the appropriate issue and or amendment of the manual e Micropack Engineering Ltd reserve the right to change or revise the information contain herein without notice and without obligation to notify any person or organisation of such action e Only those parameters and configurations highlighted with the FM triangle lt gt have been tested and approved by Factory Mutual This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 7 of 48 2 Introduction The Micropack CCTV Visual Flame Detector is a combined flame detection and surveillance system The detectors are based on a unique video imaging based flame detection technology developed by Micropack The software algorithms are capable of discriminating between genuine fire conditions and other radiant sources that may cause unwanted alarms 2 1 FEATURES Immunity Discrimination Robust and Reliable The detector is immune to common sources of unwanted alarms The detecto
39. eeseneessessseneas 37 6 10 1 Heater COMMOlandSel POI cect ok sheet ard eect a aie a ate ek Gates 37 6 10 2 Device INUNDA A aE a E 38 6 10 3 Video M t HOPPE EE 38 6 10 4 Video e 38 6 10 5 Mide ee 38 6 10 6 BUTI AT OUD A A 38 6 10 7 Factory Only ThtesholdS EE 39 6 11 lie dei TESUNG EE 39 C Maintenance and Tes coc A a a 40 O PUN imran WEE 41 8 1 Wl le MOS AA iS ad 41 Sole Ced Indication Detector tU da e ci n 41 ia Gel 42 esla A9da 9 COMMUMICAN OMS E 43 Sales Ve vdeo Image naa isto ae N ek eR a nes 44 8 2 Replacement and ee ggsetebek eee egkg geed a napa 44 9 Fechter eege eege 45 9 1 ENGINEGEFING SPECT CAM EE 45 9 2 Electrical SPECIFIC AU OI BEE 45 9 3 Mechanical eer EES 46 9 4 Environmental Specificato si A aia 46 9 5 Certification MAA EE EE da ie 46 9 6 Operating SPECITICATION EE 46 10 eene e 47 10 1 Acronyms Terms and breede oie 47 10 2 Drawings and MUST OS iii ns uihaccnacsaniseetconugiacewsnasvucctsndesnieautacabacenaosntieweseosensnauenastancuascaessscatesssaseacounisnausaeaiene 47 10 3 HELPUS TO HELP YOU si 48 This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 5 of 48 List of Illustrations Figure 1 Exploded view of all detector components usina A ege EE EEN gege ane 8 Figure 2 Detector Enclsouire and Brickell ia 9 Figu
40. er Input Resistance Receiver Unit Load Video Driver Twisted Pair Line Termination Resistor Ro Driver Output Resistance Into no load Into 75R Driver Differential Output Voltage ed Driver Differential Output Voltage loaded Driver Shutdown Resistance tri state Ro Driver Fan Out Video Driver Coaxial Line Termination Resistor Ro Driver Output Resistance PRO ee e 4 2 5 7 7 2 V Into no load Into 75R Driver Output Voltage Driver Output Voltage loaded V Driver Fan Out Unit loads EA 4 150 150 5 5 4 4 This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack 9 3 Mechanical Specification Parameter mwe Value Comment Overall Dimensions mm Coating Colour 2 5 Cable Entries mm 1 x M25 2 x M20 or equivalent 2 x M25 with top entry d Mounting Bracket Support Fixings mm 2 x M6 Vertical Adjustment Degrees O to 45 degrees El Horizontal Adjustment Degrees Provided by support Axial horizontal Rotation Degrees 10 degrees LC l 9 4 Environmental Specification Parameter Comment Operating Ambient Temperature 0 Storage Ambient Temperature 80 a Relative Humidity Non Condensing 9 5 Certification and Approvals Parameter Authority Standard Approval Hazardous Area Certification E O ECN 9 6 Operating Specification
41. ereby set to be ON Where a number of detectors share a common video cable such as a multi drop loop of two or more detectors all the detectors on that loop should have multi dropped video Enabled i e its video output OFF Each detector will only activate their video output on demand for display at the operator console 6 10 4 Video Overlays The detector threshold overlay is set to clear as default the overlay can be enabled by setting the detector overlay option to on When enabled threshold data in the form of greyscale rectangles overlaying the live video images The rectangles represent a signal being processed by the detector The current status of the detection algorithm is reflected in the colour of the rectangle Colour Meaning MID GREY Candidate being processed i e signal may or may not be a fire WHITE Fire Detected BLACK Discounted i e signal is not a fire 6 10 5 Image Enhancer The image Enhancer when selected will enhance the video picture brightness 6 10 6 Milliamp Otuput When the milliamp output is selected the Fault Healthy and alarm thresholds can be configured as per system design This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 39 of 48 6 10 7 Factory Only Thresholds The following threshold options are pre set at
42. fidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 11 of 48 3 Application Guidelines In considering the application of the detector it is important to know of any conditions that may prevent the detector from responding The detector provides reliable response to visible flames and insensitivity to common false alarm sources The detector provides protection within its field of view Solid obstructions or a direct view of intense light sources may result in partial reduction in the coverage and or a reduction in the detector sensitivity The construction of scaffolding or tarpaulins in the detector s field of view will reduce the coverage Contamination of the detector window will result in a partial reduction in sensitivity The detector provides a CCTV video image for surveillance of the protected area As with conventional CCTV cameras the detector should not face directly towards the sun or a brightly lit scene In such conditions the detectors automatic exposure control will darken the image to prevent overexposure The resultant picture may be too dark for surveillance purposes To obtain the best possible picture the detector should be facing away from the sun In the case of an FPSO where the vessel is moving the detectors should face inwards with minimal view of the horizon With the standard lens t
43. h or tissue 10 No setting waterproof grease should be evenly applied to the flame path on both the enclosure cover and body Clean the detector lens This should be done with a soft dry and clean cloth Avoid touching the electronics 12 Clean the detector enclosure faceplate Use a degreasing agent on the outside in order to remove deposits 13 Visually inspect detector electronics and inside the enclosure body for any sign of damage or moisture replace or rectify as required 14 The enclosure cover must be screwed on to a minimum of 5 full turns or until BCEE tight and secured using the locking screw provided Reinstate the detector back into service the detector back into service Ensure that inhibits are applied then using the flame test torch function test Check the complete display the detector Note the detector LED indicator within the detector housing system for correct function and changes colour to RED indication This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 41 of 48 8 Fault Finding 8 1 Diagnostics It is impossible to provide fault diagnostics for every possible detector fault The following flowcharts represent the most likely faults In all cases it is advised that the following best practise is followed e Only make
44. he detector has a horizontal field of view of 90 and a vertical field of view of 65 The location and orientation of the detector in relation to the protected area determine the actual footprint Achieving the desired coverage depends on the congestion within the protected space the location of the detector s and the distance of the detector from the hazard It may be necessary to install more than one detector within an area to achieve adequate coverage For special applications it is possible to change the detector s coverage by selecting a suitable wide or narrow angle lens i e changing the field of view and depth of field range A narrow angle lens 9 offers 10x magnification increased range of operation to over 100m up to 200m The detector sensitivity expressed as fire Radiant Heat Output RHO at a distance is determined visually by the apparent size of the fire This is a function of the fuel source how it is released and distance from the detector faceplate to the fire The detector response time is relatively independent of fuel type and or distance In common with other forms of flame detection the detector s sensitivity is reduced and potentially blinded by dense airborne obscurants such as smoke fog and other airborne particulate The detector is insensitive to arc welding however it should not be conducted within 3m of the detector This document is strictly private and confidential reproduction without Microp
45. image used for diagnostics This document is strictly private and confidential reproduction without Micropack approval is prohibited O Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual Micropack Y Ref 2200 5000 Page34of48 34 of 48 Deng 6 0 6 7 1 Raw Image amp JPEG Images These image formats are intended for use with the alarm masking and alarm map features When the grab picture is requested the detector takes a single still frame from the live video signal and sends this via the RS485 communications for display on the PC system Generally the grabbed picture will appear in a window as shown the example given is a fire test at the Micropack test ground A raw image offers the highest quality image at Ile the expense of download time The JPEG image offers quick download time at the expense of some image quality 6 7 2 Threshold Image The threshold display is intended for used by Micropack trained technicians The threshold image provides diagnostic information over the RS485 communication network When the threshold image has been selected an updating image is displayed at the operator console in the upper window This image comprises a series of white objects or candidates representing the signal being processed by the detector The lower window gives the current statistics for the candidate s The current status of the detection algorithm is reflected in the colour of the rectangle bound
46. ing the candidate s The example given is the same fire test as shown above The colours are defined in the table below Threshold mage aaa Colour Meaning None Not a candidate i e ignored Green Candidate being processed Le candidate may or may not be a fire Red Fire Detected Blue Discounted i e blob is not a fire Blob 1 100 Area 125 Match 100 Noise 33 fc 0 mot O K mot C Blob 2001 Area 147 Match 100 Noise 0 fc 0 mot O K con 1 72 This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 WE _ CCTV Visual Flame Detector Technical Manual JMicropack Y Ref 2200 5000 Page 35 of 48 6 7 3 Alarm Mask Feature The alarm mask facility is intended for used by Micropack trained technicians The alarm mask allows the detector s field of view to be truncated by defining specific regions where fire detection is excluded on a two dimensional 2D mask In this way un graded or adjacent fire areas within the detectors field of view can be excluded from fire detection The alarm mask is created on the PC Display and Alarm Handling system Example shows the Micropack test facility vessels being masked The current alarm mask setting can be displayed and edited in the following manner C CAM 02 e Get the display preferences for a JPEG picture e Select the detector and grab bitmap e To clear the current mask select an
47. ission equipment is available from third party companies Their products are available commercially off the shelf COTS and are intended for use in CCTV and security applications Typically the equipment provides simultaneous transmission of up to four 75 Ohm PAL Video signals and one channel of bi directional RS485 communications along a single multi mode fibre 62 5 125um When selecting suitable equipment care should be taken in selecting the fibre type single or multi mode and in calculating the optical budget The optical budget should consider the actual make up of the fibre path including e fibre attenuation per Km at the transmission wavelengths e all splices and connectors e rotary couplings slip rings e the total path length e anallowance for the long term affects of ageing etc An example worse case optical budget is shown below Fibre Optic Losses 780nm Comment 1300nm Comment Rotary Coupling Insertion Losses 5 5dB 5 5dB Rotary Coupling Spectral Variation 1 5dB Splice Connector Losses 4dB 8 O 0 5dB 4dB 8 O 0 5dB Fibre Optic Cable Losses 3dB 1km 3dB km 1dB 1km O 1dB km Total Losses 12 5dB 12dB Transmission Equipment Available Budget 14dB 14dB Available Budget 1 5dB 2dB The available optical budget after losses is better than 1 5dB This is sufficient to allow for the effects of installation variations and ageing Taken from Focal Inc fibre optic swivel specification February 8 1998
48. ists PC Display Video Connection Broken Corrupted Is the correct image displayed ntermittent Interference NO YES may be due to RS485 Communications Incorrect Video Image Check device list entry has correct video routing Check cabling is correctly installed Loss of Contrast Darkened or ghosted images Is the detector on a multi drop Ensure all multi drop YES detectors are configured video disable on reset NO Did NO this correct the Image y Long Cable Length YES Apply Compensation for DC and EQ gain to the video switch Video OK Figure 20 Video Signal Diagnostic Chart 8 2 Replacement and Repair correctly installed YES Focus Remove Detector and YES adjust focus and clean all optical surfaces thoroughly v Long Cable Length Apply Compensation for DC and EQ gain to the video switch Is the Image Blurred If problem Persists What is the corruption Hum bars or Noisey Image or Horizontal Ripple Reasonable Image with Hum bars No Sync or scrolling white lines How is the image Serious Corruption interference lines Distorted of Image Inverted Video Check video cabling for S Reasonable Image a reversed connection which Wobbles Ripples Earthing Fault y Cabling Fault Ensure system OV and PC Display Earth are at same potential
49. l Flame Detector Technical Manual Micropack 5 2 Electrical Installation In order to maintain compliance with the EMC regulations it is essential the electrical installation be engineered correctly It is advisable to check the detection locations prior to fabrication of the mounting supports as changes are frequently made during construction at site Detector cabling must be segregated from cables carrying high speed data or high energy and or high frequency signals and other forms electrical interference The detector requires a clear unobstructed view of the local hazard In order to avoid local obstructions such as pipe work and cable trays a 2m helix should be allowed in the detector cabling The detector baseboard should only be fitted just prior to commissioning the detector Experience shows that the detector can be damaged due to cable testing operations Insulation Tests etc E Isolate all associated power supplies Ensure that they remain OFF until required for commissioning The threaded flame path of the enclosure cover and body must be protected from damage during installation Any such damage can destroy the validity of the enclosure The detector sensor board and baseboard electronics should be removed from the enclosure prior to installation The detector electronics shall be protected form mechanical damage and external sources of EMI such as X rays HEI and electrostatic discharge The detector external earth stud
50. n its field of view that is not hidden by solid obstructions or intense light sources It may be necessary to install a number of detectors to provide adequate coverage and to meet the site performance targets Figure 5 Example Detector Coverage and Field of View Software analysis of the actual detector coverage may be required to assure adequate coverage of the hazards This analysis can also be used to optimise the number of detectors and the loop configuration This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 13 of 48 3 3 Exposure to Flare Radiation Flame detectors are frequently used where hydrocarbon fire hazards are expected typically process plant and engine room hazards The detector should not have a direct view the flame if this cannot be avoided they should be masked out to prevent an alarm being detected using the built in alarm masking facility 3 4 Flexibility of mounting location The detector requires a clear unobstructed view of the local hazard In order to avoid local obstructions such as pipe work and cable trays a 2m helix should be provided in the detector cable to allow local repositioning of the detector 3 5 Mounting Arrangements Firm vibration free mountings are essential for trouble free operation of optical systems
51. n CCTV Visual Flame Detector Technical Manual Micropack CCTV Visual Flame Detector ropock Engineering L Vode wor Sit fa wheats thethen Aberdeen cotlend s bate e ELE D LE Z lt a gt den ECH Ss Care aes Li S 1001 gt eee E ee NLS ei Ris SKI e Gi db LZ W ee W Amt m 5 w Sp kl P mm wm mmm Technical Manual RELEASE NOTES maer so aa omamen es e DEER w remsen o a Prepared Approved Date R Johnson S Duncan 12 12 2000 This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 2 of 48 HELP US TO HELP YOU Every effort has been made to ensure the accuracy in the contents of our documents however Micropack Engineering Ltd can assume no responsibility for any errors or omissions in our documents or their consequences Micropack Engineering Ltd would greatly appreciate being informed of any errors or omissions that may be found in our documents To this end we include a form given in Appendix 10 3 for you to photocopy complete and return to us so that we take the appropriate action Thank you This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack
52. n Wire Typical Conductor Resistance per Km 3280ff Gauge AWG DC Ohms Km 20 C approximate 4 4 1 General Guidance The overall performance and the transmission distance depend on the selected twisted pair cable Individually screened twisted pairs offer better electrical immunity When individually screened twisted pairs are used the transmission distances are considerably reduced due to the higher capacitance introduced by the screen The choice between screened and unscreened pairs is a compromise between transmission distance and immunity towards noise and crosstalk When multiple detector signals are carried on a single cable the pairs must be individually screened to prevent interference Avoid locating unscreened twisted pair cable parallel to cables carrying high speed data or high energy and or high frequency signals 4 4 2 DC Power It is not necessary for the DC power cable to be a twisted pair or individually screened a 2 core stranded cable with an overall screen is sufficient The minimum conductor size is determined by the cable length the number of Flame Detectors on each loop and the maximum allowed voltage drop at the last detector To prevent RS485 and Video common mode problems this is limited to a maximum of four volts 4V on the negative supply OV This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector
53. ne obscurants Fog smoke and potentially other similar airborne contaminants affect the detectors sensitivity by reducing the detector s range In general the detector s range is limited to the Meteorological Optical Range or M O R The M O R represents the range of human visibility as defined by the MET office and is expressed as meters of visibility Le the attenuation of light over a given distance l 20 L measurement path length Visibility MOR Lx Pee path leng T transmissivity optical attenuation log T Opacity is the measurement of optical attenuation T transmissivity 1 Opacity 100 expressed as a percentage between 0 and 100 Equation 1 Meteorological Optical Range M O R Calculation For example this means an M O R distance of 20 meters results in the detector having a maximum range of 20 meters 3 10 Detector Sensitivity The detector s response to a fire is a function of the fuel source and how it s released fire size and distance orientation to the detector local ambient conditions and the detector threshold settings The following typical figures are based on in house tests As with all tests the results must be interpreted according to the individual application taking into account all possible variables The detector sensitivity to different fuel sources is dependent on the apparent size of the flame the detectors typical response is shown below Table 2 Typical Detector
54. old Configuration The detector has two types of user configuration the hardware links on the baseboard described previously and the detector threshold setting The detector configuration should be recorded in the project design at a suitable location to ensure that repairs or replacements are correctly configured The detector baseboard contains a non volatile memory this is used to store all detector thresholds for the specific detector location other than the detector alarm mask which is stored on the detector sensor board Should the detector sensor board be replaced the replacement will automatically read the memory and configure itself accordingly In the event the baseboard needs to be replaced the replacement will need to be manually reconfigured with the correct configuration However since the detector sensor board stores the alarm mask data should the sensor board be replaced its replacement will need to be manually reconfigured The detector threshold allows the detector operation to be configured for the specific location Table 5 Default Detector Threshold Settings Detector Baseboard Address 1200h Set to address 201h to FFFh Fire Size 10kW RHO Set to performance target Detector Enclosure Heater Enable Disabled Enable for ambient lt 10 C Multi dropped Video Disabled Enable for muli drop loop The detector thresholds should be set appropriately for the installation refer to get thresholds for details of detect
55. on specification which is approximately proportional to conductor size The characteristic impedance of a transmission line is a function of the physical dimensions of the conductor and the permittivity of the dielectric the insulation at high frequencies this is approximately equivalent to L Cable Inductance mH Zo Q VL C C Cable Capacitance uF Zo Characteristic Impedence Ohms Equation 4 Characteristic Impedence Calculation 445 RS485 Communication The RS485 communications cabling should be a twisted pair stranded cable with an overall screen Where multi core cables are used then individual screened twisted pairs are recommended The cable should have the following characteristics Table 10 RS485 Communications Cable Characteristics Cable Characteristic Capacitance Conductor Attenuation Characteristic Impedence Resistance 1MHz Absolute Limit 90R to 150R 100nt Km 150R Oo be 0 7mH Km The maximum cable length is dependent on the cable manufacturers attenuation specification which is approximately proportional to conductor size The characteristic impedance of a transmission line is the same as for the video above This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 29 of 48 4 5 Fibre Optic Cabling Fibre Optic transm
56. onononnnncncnonononnno nano nano nonnnnnonacanannnnns 23 AZA A4 2OMA OUIDUE GCOMMSCIION ic A AAA A A ARS 23 4 2 5 Stand Alone Detector digital InPuUtS aida AA AA AR a 24 AZO MUNGO LOODINO aiii daa 24 APA Coaxial Video COnnechOM esnie a E N E 24 4 3 Detector Threshold CON A A ane a 25 4 4 Cable SEG CUO NN E 25 4 4 1 CTA RCNE 26 E E RE EE 26 This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Ref 2200 5000 Page 4 of 48 Ades A o ee ated 27 4AA e Ee RRE BL EE 28 Haro ROJS COMMUNICA ON DEE 28 4 5 FIBRE Opti Caplin seissen n eat ace secant ea eens kena oa en ea een ste ene a 29 St Jeton steet eege ee 30 5 1 Mechanical installato iii eden 30 5 2 ElectriCal Sta A A a A A aid 31 6 Operating IASTUCION Sii a cdas 32 6 1 E ele e EE H EE 32 6 2 FRESCU ALANIS ut 32 6 3 elle e MS A A RA A AAA ere 32 6 4 A E q 33 6 5 OWN E WE 33 6 6 Firmware FO SUM accessor cea ccistcesc soa alone kc a a ades visas Saas e a ob ace dam aE E aa bak Ea ET E E ERE 33 6 7 Grab STE 33 6 7 1 Raw Image amp JPEG lu Ee TEE 34 Ghas leie Madeira daras 34 EE SE Ee Mask F at re dra da 35 044 Alain Map Fe tU A Aa 35 6 8 Upload Wal UE 36 6 9 AS COMMS TOS EE 36 6 10 Get Thresholds Detector Controls ccccesssseeeseseseeeesseessneeeeeeesneeseeeesseeeesoesseeseeoensseeesoeeaseeeesoenseneeseueese
57. or thresholds 4 4 Cable Selection The installation and local regulations and standards determine the overall cable specification This section specifies suitable cable characteristics to ensure correct operation of the flame detector There are many different cabling methods available each has advantages and disadvantages and these are 1 Video coaxial cable plus combined twisted pairs for DC power and RS485 signals 2 Three twisted pair cable one each for DC power RS485 and video signals 3 Four twisted pair cable two for DC power and one each for RS485 and video signals 4 Two twisted pair cable for DC power and RS485 and separate video coaxial cable Option three allows smaller conductors to be used for RS485 and Video signals with double the cross sectional area available for the DC power cables This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 A CCTV Visual Flame Detector Technical Manual Micropack Table 6 Typical cable lengths 24V Supply Installation based on Number Maximum Maximum Cable Length Maximum Cable Length 24V nominal supply of Flame Power m with 1 5mm m with 2 5mm Detectors W Conductors Conductors 12 ohms Km 7 6 ohms Km IN CI eme CI A g H Note increasing the supply voltage to 26V would increase the maximum cable lengths by 40 Table 7 AWG Conversion Table Cross Sectional Area America
58. r has been designed for the extreme such as hot work e g grinding and welding Hot CO environmental conditions experienced offshore emmissions Such as turbine exhausts and Flare Reflections Detection Coverage The detector is sensitive to fires of 10kW radiant heat output Live Video RHO or greater and up to 20m within a 90 field of view A live video image is available from each detector this allows information about the protected area to be displayed on a monitor Selectivity in the control room This provides the operator with a visual The detector sensitivity can be configured to a precise fire image of the event reducing reaction time size between 10kW and 50kW RHO 2 2 Visual Flame Detection The detector can operate stand alone or can be integrated with other control systems The detectors are located in fixed locations throughout the installation to achieve the specific detection coverage and ensure the site performance requirements are always met Each detector provides live video images and fire alarm fault signalling to the control equipment Each detector operates independently incorporating within a single unit an imaging camera Digital Signal Processing and Software Algorithms to process the live video image and interpret flame characteristics 2 3 Surveillance System Live video images are available from each detector allowing a remote operator to interrogate the system and during an alarm situation see
59. re s Detector Sensor BO A A 10 Rourea RE e WEI DE 10 Figure 5 Example Detector Coverage and Field of EE 12 Figure 6 Detector Terminations amp Hardware LINKS ett erger eege eal daa 16 Figure Electrical Sehematic Block DIA AM a AAA AAA AAA AAA AAA ARA AAA A AA 18 Enduro Detector Power SDD CAI EE 20 Figure 9 Detector Point to Point Cable Connection EREECHEN ee 22 Figure 10 Stand alone Detector With Short Circuit Monitoring AAA 22 Figure 11 Stand alone Detector Without Short Circuit Monttormg ennt Eneee nn 23 Figure 12 4 20 MIA OU EE 23 Figure 13 Detector Mulit drop Loop Cable Connection sanidad A di 24 Figure 13 Detector Coaxial Cable COMEN A a aaa 24 Figure Enclosure Mechanical ASMA a ee 30 Figure 13 Detector Elce Mican talatos naaa A AAA A A AA RRA 31 Figure 16 Detector Firmware Flash Memory Socket ccccocccoonnonccnnonncnnonnonanonononononnonanoncnnncnnnnnn ono nnnononnnono nana rnnnnnnronennnannanannncnnonns 36 Figure 17 LED Status Diagnostic At AS AAA AA ARA AAA AAA AAA AA ATAR 41 Eure 18 POwer Supply Diagnostic ON A E A 42 Fig re 19 R9485 Communications DiaqnostiC OA aaa 43 Figure 20 Video Signal Diagnostic CNE Ee 44 List of Tables Table Detector Assembly Ran Sect ros cece Sac Uy dig baled EE 8 Table 2 Typical Detector Response Characteristics cccccccceeeeeeeeeee eee ee ee eeeee eee eee ae asad eee eee eee eeaaadedeeeeeeeeeaaaaaaeeeeeeeeesaeaaaaeeeeeeeseaaaaaes 14 Table 3 Baseboard Conliguiratiom Bn 1
60. selecting a suitable wide or narrow angle lens The alarm mask facility can then be used to precisely define the detection coverage The standard detector has a 90 wide angle lens 1x while a 9 narrow angle lens 10x offers the longest range i e highest magnification currently available This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 n CCTV Visual Flame Detector Technical Manual J Micropack Ref 2200 5000 Page 16 of 48 4 System Design Guidelines The following guidelines are intended to assist with the electrical design and engineering of systems for use with the visual flame detector 4 1 Electrical Connections The electrical connections and detector configuration links are located on the detector baseboard as shown below Terminals 1 to 12 Detector Hardware SE Ee f i f Configuration Links E wa rs ee Ae E Baseboard mounting screws C Terminals 13 to 24 Figure 6 Detector Terminations amp Hardware Links 4 1 1 Hardware links The detector baseboard has 4 user configurable links Table 3 Baseboard Configuration Links Link Function Description State if Link Not Fitted State if Link Fitted MN 24Vde Supply A amp B Shorting Link Default State A amp B Shorted J1 RS485 A RS485 Channel A Line Termination Link Not Terminated 120R Terminated RS485 8 RS485
61. stranded conductor to facilitate crimping such as equivalent to RG59 or RG11 with the following characteristics Table 8 Video Coaxial Cable Characteristics Cable Characteristic i Conductor Attenuation Characteristic impedence Resistance Absolute Limit The maximum cable length is determined by the cable manufacturer s attenuation specification typically 300m as shown in the calculation below Coaxial video cabling generally produces the highest video quality and allows the use of commercial CCTV video switching equipment S Au Attenuation Limit db Aa is Au E m Am Cable Attenuation per Kilometre db km Lim Cable length in Kilometres Equation 3 Video Coaxial Cable Length Calculation This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual y Micropack Ref 2200 5000 Page 28 of 48 The video cabling should be a twisted pair stranded cable with an overall screen Where multi core 4 4 4 Video Twisted Pair cables are used then individual screened twisted pairs are recommended The cable should have the following characteristics Table 9 Video Twisted Pair Cable Characteristics Cable Characteristic Capacitance Conductor Attenuation Characteristic impedence Resistance 1MHz e The maximum cable length is dependent on the cable manufacturers attenuati
62. system respond to the detector alarm condition and does not affect the detectors operation To inhibit any control actions being taken when the detector is in a fire alarm condition select the detector inhibit option This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 Ref 2200 5000 Page33of48 33 of 48 Deng 6 0 n CCTV Visual Flame Detector Technical Manual Micropack 6 4 Get Settings Get setting is intended for diagnostic purposes This function peee reee allows the detectors current operating parameters to be viewed Networkname CAM 02 Network address 1202 Get settings is commonly used to verify the detectors current mt Mane Rom cre check pass firmware revision as well as to review real time data such as the Exposure mode current enclosure temperature and current exposure settings R a alia EES UIput mode anne O Linear vm z Auto gain control Off Note Gain setting 1 Auto exposure control Off Coarse exposure setting 61 Fine exposure setting 57 The contents in this graphic are illustrative only and are Average intensity 161 S sch a Heater control On dependant of project specification and ongoing development Heater setpoint 16 Heater output 0 on Refer to individual installation for actual name address and rom Temperature deal 13 Debug data hex 00000000 version details 6 5
63. to be isolated electrically terminations associated with all units under test are in good order Ensure that detector mounting arrangements are secure and undamaged El Ensure that the detector enclosure is intact and undamaged 3 Ensure that the detector enclosure is intact and undamaged 4 Ensure that all associated cables and glands are correctly made up secure and undamaged 5 Clean the enclosure faceplate outside with a mild detergent solution and a Assess requirement for opening soft cloth until the window is clear of all contamination Wash the window the enclosure for maintenance or thoroughly with clean water and dry with a clean lint free cloth or tissue cleaning follow steps 6 to 14 Open up the detector enclosure if required by removing the enclosure cover Avoid damage to the flame path This exposes the enclosure flame path and detector electronics and faceplate 7 Clean the enclosure cover and body flame paths with a dry clean cloth to remove any contamination If the flame path or threads are badly pitted the component should be replaced Check the O ring seal on the enclosure cover is not damaged or perished replace as required Note the ingress protection is compromised if the seal is not correct Clean the enclosure faceplate inside with a mild detergent solution and a soft cloth until the window is clear of all contamination Wash the window thoroughly with clean water and dry with a clean lint free clot
64. with no earth return current Same applies to all field cabling Check cabling ensuring that twisted pairs and screens are maintained throughout and adequately segregated from power amp RS485 Vibration Ensure baseboard and detector screws are tightened and that all mountings are secure and free from vibration If problem persists Replace Baseboard and or Detector The detector contains no user serviceable parts If the detector baseboard is replaced its replacement must be reconfigured with the correct threshold settings and jumper link settings as described in get thresholds in section 6 10 If the detector sensor board is replaced its replacement may need to be reconfigured with the correct alarm mask image as described in Alarm mask feature in section 6 7 3 This document is strictly private and confidential reproduction without Micropack approval is prohibited Micropack Engineering Ltd 2000 CCTV Visual Flame Detector Technical Manual y Micropack Ref 2200 5000 Page 45 of 48 9 Technical Specification 9 1 Engineering Specification 9 2 Electrical Specification ows S o sws o e e eS swe TOMO e G EES o Heater Power Consumption E RS485 Transceiver Meets EIA 485 Specification Detector shutdown voltage low supply H Driver Differential Output Voltage Driver Fan Out V V Receiver Input threshold Vo Receiver Common Mode Input Range Receiv

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