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Table of Contents SYSTEM APPLICATION .....................................................1 FEATURES .........................................................................2 GENERAL APPLICATION INFORMATION .........................2 SYSTEM DESCRIPTION ...................................................2 Detector .........................................................................3 Controller .......................................................................3 SPECIFICATIONS ......................
INSTRUCTIONS Ultraviolet Flame Detection System R7404 Controller C7050 Detector SYSTEM APPLICATION The Det-Tronics model R7404 Controller and C7050 Detector provide fast, reliable flame detection in a wide variety of applications. The microprocessor based controller simultaneously monitors up to 16 C7050 ultraviolet (UV) detectors in up to 8 different zones.
such as wind, rain, or extremes of temperature and pressure. The Det-Tronics UV system is also insensitive to the ultraviolet component of solar radiation. Solid Materials — Munitions production such as illuminating flare material, TNT, and other propellants — Powder coating booths Considering the above, it can be seen that there are fire detection applications where only ultraviolet sensors are suitable.
The output of the detector consists of a series of voltage pulses or “counts.” The frequency of these pulses is directly proportional to the intensity of the radiation being detected and is measured in counts per second (cps). Detector Enclosure The detector is housed in an explosion-proof enclosure that is designed to meet most national and international standards. It is available in various materials to meet the requirements of the environment in which it is used.
tem. The main loop of the operating program continuously cycles through the Automatic Optical Integrity test, checking each detector and its wiring. At the same time, the microprocessor can be interrupted by any one of several status changes, such as a fault, a “fire” signal from one of the detection zones, or a change in the setting of the keylock switch. In the event of a status change, the microprocessor will take the appropriate action. 2. The solid state alarm output is energized.
tors to fulfill voting requirements, and represents the best balance between reliability of fire detection and freedom from false actuation due to individual detector malfunction. SPECIFICATIONS SPECTRAL SENSITIVITY RANGE— The detector responds to UV radiation over the range of 185 to 245 nanometers (1850 to 2450 angstroms).
resistance is 16.14 ohm/1000 ft. or 53.0 ohm/km.) The R7404 Controller will accommodate up to 16 detectors. The detectors can be located up to 2000 feet (600 meters) from the controller. Shielded cable is required for the “B” (signal) leadwires. As with any field device, shielded cable on all wires provides maximum protection from RFI/EMI sources. SHIPPING WEIGHT (Approximate)— Pounds Controller 2.5 Detector (aluminum) 1.25 (stainless steel or brass) 2.25 2.0 (50MM) 9.5 (242 MM) 7.
PART NUMBER 005269-XXX CONTROLLER POSITIONS FOR: FIRE GAS HT: DIM. (A) INCH MM DIM. (B) INCH MM DIM. (C) INCH MM DIM. (D) INCH MM DIM. (E) INCH MM WEIGHT LB KG 4.00 6.97 9.3 7.6 5.9 4.2 3.5 2.7 5.1 4.2 3.1 2.3 1.9 1.4 –001 –002 –003 8 6 4 16 12 8 4U 4U 4U 19.00 15.06 11.13 482.6 382.6 282.6 18.30 14.36 10.43 464.8 364.7 264.9 17.36 440.9 13.42 340.9 9.49 241.1 –004 –005 –006 3 2 1 6 4 2 4U 4U 4U 9.16 7.19 5.22 232.7 182.7 132.6 8.46 6.49 4.52 214.9 164.9 114.8 7.52 191.0 5.
8 illustrates the relative response of a “typical” C7050 to various size gasoline fires based on minimum sensitivity standards for DE1888 UV sensor modules. Sensor modules with higher sensitivity are available. Consult the Field Support Group at Det-Tronics for information or assistance concerning a specific detector tube type or a specific combustible material. produce a count.
distance of 23 feet (7 meters) from the detector. Assume that the hazard is gasoline and that it is desired to produce an alarm signal when a fire with a surface area of 1 square foot (0.09 m2) develops. Reading on the horizontal “Distance” axis of Figure 8, locate the vertical line at approximately 23 feet (7 meters). Follow this line until it intersects the “1 square foot” curve. Note that this occurs at the horizontal line of about 50 counts per second on the vertical “Detector Output” axis.
be fitted between the gland and the conduit entry to ensure IP66 rating. Since moisture can be detrimental to electronic devices, it is important that moisture not be allowed to come in contact with the electrical connections of the system. Moisture in the air can be trapped within sections of conduit, therefore the use of conduit seals is required to prevent damage to electrical connections caused by condensation within the conduit.
TERMINAL CAP TERMINAL BLOCK INDEX PIN SOURCE TUBE O-RINGS (2) OPTIONAL MOUNTING BRACKET (Q9001B) WINDOW AND HOUSING oi REFLECTIVE RING * UV SENSOR MODULE G0025 * oi UNITS ONLY Figure 9—C7050 Detector ward to prevent the cone of vision from scanning the horizon, since the detectors can be affected by long duration lightning flashes or distant arc welding.
many ground leads together so that only one ground leadwire need be run to the controller. (Keep this common ground leadwire as short as possible.) Ground all unused leads at the controller. For additional information refer to Service Memo 75-1003, “Multiconductor Cable Wiring.” IMPORTANT Use only DE1888 sensor modules with the C7050 Detector. The jumper plug must not be installed on the UV sensor module used with the R7404 Controller (see Figure 12).
THESE TWO SWITCHES PROGRAM THE MICROPROCESSOR FOR EACH DETECTOR CONNECTED SWITCH 2 PLACE ROCKER IN OPEN POSITION FOR EACH DETECTOR IDENTIFIED AS NO. 2 IN ZONES 1 THROUGH 8 } ROCKER POSITIONS CLOSED } 8 7 6 SWITCH 3 OPEN 8 OPEN SWITCH 1 PLACE ROCKER IN OPEN POSITION FOR EACH DETECTOR IDENTIFIED AS NO. 1 IN ZONES 1 THROUGH 8 NOTE: SWITCH ROCKER NUMBERS ARE DESIGNATED 1-1, 1-2, 1-3, ETC. THE NUMBER PRECEDING THE DASH INDICATES THE SWITCH NUMBER.
Controller Sensitivity — Rockers 3-1 to 3-4 4 3 Rockers 3-1 to 3-4 are used to program controller sensitivity in 8 cps increments. SWITCH 3 3-1 CLOSED = 8 CPS 3-2 CLOSED = 16 CPS TOTAL SENSITIVITY = 24 CPS OPEN 2. 2 1 3-1 closed — 8 cps 3-2 closed — 16 cps 3-3 closed — 32 cps 3-4 closed — 64 cps A0281 Figure 15—Controller Sensitivity Setting The values of the closed rockers are added together.
Output Latching/Non-latching — Rocker 4-1 } 8 7 closed — non-latching open — latching 6 SECOND TIME DELAY 4 SECOND TIME DELAY ROCKER 4 CLOSED = 2 SECONDS 2 SECOND TIME DELAY TOTAL TIME DELAY = 6 SECONDS 3 1 SECOND TIME DELAY 2 0.5 SECOND TIME DELAY 5 4 NOTE The zone and fire logic outputs will latch when turned on if rocker 4-1 is set open. The outputs are de-latched by placing the keylock switch in the RESET position. 5. NOT USED 8 OPEN 4.
NOTE External equipment that can generate transients when switching (such as relays) must have a transient suppression device (diode) connected across the coil at the time of installation. This will safeguard the output transistors of the controller against possible damage. Figure 21 illustrates an inductive load with a diode used for transient suppression.
FIRE ALARM CONTROL CABINET J1 C7050 A B C D A B C D ZONE 1 C7050 A B J1-3 C J1-5 D J1-2 J1-13 A B C D ZONE 2 C7050 A J1-3 B J1-6 C J1-2 D J1-14 A B C D ZONE 3 C7050 A J1-3 B J1-7 C J1-2 D J1-15 A B C D ZONE 4 C7050 A B J1-3 C J1-8 D J1-2 J1-16 A B C D R7404 ZONE 5 J2 2 + – ZONE OUTPUT 2 34 3 (A) +290 VDC ZONE OUTPUT 3 35 4 B - INPUT 1 ZONE OUTPUT 4 36 5 B - INPUT 2 ZONE OUTPUT 5 37 6 B - INPUT 3 ZONE OUTPUT 6 38 7 B - INPUT 4 ZONE OUTPUT 7 39 8 B - INPUT 5 ZO
FIRE ALARM CONTROL CABINET C7050 A B C D A B D ZONE 1 C7050 C7050 A B C D A B C D A J1-3 B J1-4 D J1-20 A JI13 B J1-5 D J1-13 ZONE 2 C7050 C7050 A B C D A B C D A J1-3 B J1-5 D J1-21 A J1-3 B J1-6 D J1-14 ZONE 3 C7050 A B C D A J1-3 B J1-6 D J1-22 ALTERNATE METHOD OF TERMINATING SHIELDS, FOR USE WHERE CODES PERMIT J1 1 R7404 + – 2 } 10 TO 38 VDC ZONE OUTPUT 1 J2 33 ZONE OUTPUT 2 34 3 (A) +290 VDC ZONE OUTPUT 3 35 4 B - INPUT 1 ZONE OUTPUT 4 36 5 B - INPUT 2 ZONE OUTPU
FIRE ALARM CONTROL CABINET C7050 A B C D A B C D ZONE 1 C7050 C7050 A B C D C7050 C7050 C7050 C7050 C7050 C7050 C7050 C7050 ZONE 6 C7050 ZONE 7 C7050 ZONE 8 B0873 A B C D A B C D A B C D A B C D A B C D A B C D ZONE 6 C7050 A B C D A B C D ZONE 5 C7050 A B C D A B C D ZONE 4 ZONE 5 A B C D A B C D ZONE 3 ZONE 4 A B C D A B C D ZONE 2 ZONE 3 A B C D A B C D ZONE 1 ZONE 2 A B C D A B C D A B C D A B C D A B C D ZONE 7 C7050 A B C D J1 1 J1-3 J1-4 J1-2 J1-20 J1
5. DETECTOR COUNT TEST 1. Place the keylock switch in the TEST position. — The DETECTOR display remains the same until the ZONE display changes from the lowest to the highest zone. The DETECTOR display then cycles from “2” to “1” or “1” to “2.” — The SYSTEM STATUS display shows the number “1.” — The upper displays show the detector and zone that are electrically positioned for test.
4. Repeat the test for all detectors in the system. 5. After all detectors have been checked, reset the system by turning the keylock switch to the RESET position, then turn it to the NORMAL position. 6. Restore power to output loads or remove any mechanical blocking devices. It is imperative that these O-rings be properly installed and in good condition. Failure to properly maintain these rings can allow water to enter the detector and cause premature failure.
Table 5—Troubleshooting Chart Upper Displays Detector Zone 0 0 Lower Display 0 Status Keylock switch is in RESET position, or the external inhibit is being used. (Outputs inhibited, except Status outputs.) Keylock switch is in TEST position. (Outputs inhibited except Status outputs.
FUSE A1324 Figure 25—Fuse Location Detector Electronics Corporation 466 Conchester Highway Aston, Pennsylvania 19014 USA Telephone (610) 497-5593 Facsimile (610) 485-2078 Det-Tronics Deutschland Kidde Deugra GmbH Postfach 1457 Harkortstrasse 3 D-4030 Ratingen 1 GERMANY Telephone 49 2102 4050 Direct 49 2102 405152 Facsimile 49 2102 405151 Telex 8589029 Detector Electronics Corporation 11210 Steeplecrest Drive Suite 104 Houston, Texas 77065 USA Telephone (713) 970-2646 Facsimile (713) 970-2667 Detector
Det-Tronics Benelux Costerweg 5 NL-6702 AA Wageningen THE NETHERLANDS Telephone 31 (0)317 497625 Facsimile 31 (0)317 427308 ORDERING INFORMATION When ordering specify: — R7404 Controller — C7050 Detector — Detector housing material Aluminum Nickel-plated brass 316 stainless steel — Cover locking assembly (if required to comply with local regulations) 117333 Moscow Gubkina St, d.
— Air Shields provide a continuous flow of clean air across the viewing window of the detector to reduce the accumulation of certain types of airborne contaminants. — Q9001 Swivel Mounting Assembly for mounting the C7050 Detector. Use the Q9001B for C7050 Detectors with aluminum housings and the Q9001H for C7050 Detectors with nickel/brass and stainless steel housings. — R6006 Relay Output Module is used in conjunction with the R7404 when supervised relay outputs are required.
APPENDIX [Factory Mutual Research Corporation (FMRC) Approval Description] R7404 CONTROLLER AND C7050 UV FLAME DETECTOR • Automatic Fire Alarm Signaling Performance verified per FM3260. • Performance verified Optical Integrity (oi). • The following performance criteria was verified by FMRC: Response Characteristics Refer to Table A1. Table A1—C7050/R7404 Flame Detector Response Characteristics Counts Per Second (cps) Fuel Size Distance 10 n-heptane 1 ft x 1 ft (0.3 m x 0.
INSTRUCTIONS Ultraviolet Flame Detection System R7404 Controller C7050 Detector 7/97 Form 95-8242-04
