MODEL: U1F, U2F & U4F-UV and UVC120 ULTRAVIOLET FIRE DETECTION SYSTEM 1, 2 and 4 Channel Field Mount Controller with the UVC120 Detector Part Num ber: M AN-0016-00 Rev.
Copyright © 2002 Net Safety Monitoring Inc. Printed in Canada This m anual is provided for inform ational purposes only. Although the inform ation contained in this m anual is believed to be accurate, it could include technical inaccuracies or typographical errors. Changes are, therefore, periodically m ade to the inform ation within this docum ent and incorporated without notice into subsequent revisions of the m anual. Net Safety Monitoring Inc.
Table of Contents Unit I GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONTROLLER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 1 - Controller Dimensions . . . . . . . . . . . . . .
Unit IV SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 STARTUP PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECKOUT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . MANUAL vi CHECK/COUNT TEST . . . . . . . . . . . . . . . . . . . . MANUAL CHECK PROCEDURE . . . . . . . . . . . . . . . . . . . . . . ALTERNATE TEST PROCEDURE . . . . . . . . . . . . . . . . . . . . . NORMAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . .
Unit I GENERAL INFORMATION DESCRIPTION The UVC120 Flam e Detectors com bined with the U1F, U2F or U4F-UV Fire Controller provide fast, reliable flam e detection in a wide variety of applications. The m icroprocessor based controllers sim ultaneously m onitor up to four ultraviolet (UV) detectors to provide m axim um operating flexibility at m inim um expense.
< Relay Contacts: Norm ally open/norm ally closed contacts rated for 5 Am peres at 30 Volts DC/ 250 Volts AC < Current Outputs: 4-20m A DC into a m axim um external loop resistance of 600 Ohm s at 18-32 Volts DC < Dimensions: Refer to Figure 1 < Shipping W eight (approximate): 2 lbs (0.
< Pow er Consumption (each detector): 0.29 W atts nom inal, 0.5 W atts m axim um 1 m A nom inal, 1.7 m A m axim um < Temperature Range: Operating: -40ºC to +125ºC Storage: -55ºC to +150ºC (-40ºF to +257ºF) (-65ºF to +302ºF) < Dimensions: Refer to Figures 2a and 2b < Detector Enclosure M aterials: Available in anodized copper-free alum inum or optional stainless steel < Shipping W eight (approximate): 2 lbs (0.
BASIC OPERATION - CONTROLLER CONTROLLER FACEPLATE DESCRIPTION The controller faceplate provides LEDs and two digital displays for identifying status conditions, a bar graph display for indicating an alarm condition and MENU/SET and SELECT/RESET pushbutton switches (See appendix for instructions on activation) for testing and resetting the system. Refer to Figure 3. Figure 3 - Controller Face-Plate < Digital Displays - The left side of the digital display is normally off.
OUTPUTS Relay Outputs: The Instant, Area and Fault relays have SPDT contacts rated 5 Amps at 30 Volts DC or 250 Volts AC. The Instant and Area alarm relays are programmable for either normally energized or normally de-energized operation and for latching or non-latching (programmable as a group not individually). The fault relay is only normally energized. The relays can be configured with jumpers for normally open or normally closed contacts.
Figure 4 - Jumper Selection for Isolated or Non-Isolated Current Outputs PROGRAMMING OPTIONS DIP switches located on the circuit board are used to “program” various options including: < channel selection, < system sensitivity, < fire area voting logic, < time delay for fire area alarms, < relay latching/non-latching selection, and < relay energized/de-energized selection. NOTE Power to the controller must be cycled to make dip switch changes take effect.
(Automatic Diagnostics and Fault Identification Cont) any one of several status changes such as a fault or a "fire" signal from one of the detection areas to take appropriate action. If a system or vi fault is detected the Fault LED flashes, digital displays and current outputs identify the nature of the fault and the fault relay is de-energized. VOTING LOGIC (not applicable to U1F) The controller can be DIP switch configured for either one or two monitoring areas.
< < refineries engine rooms Gaseous Fuel Handling < butane and propane loading and storage < pipeline compressor stations < gas gathering facilities < LNG loading, transfer and storage < hydrogen < gas turbines Other Processes < paint spray booths < chemical and petrochemical production < powder coating booths Automated fire protection systems also have applications in any manufacturing or research facility where the potential of fire may be low to moderate but the losses due to a fire would be high.
The UV sensor responds to radiation other than ultraviolet. X-rays can activate the detector and are often used in industrial inspection. It may be necessary to disable the system if X-ray inspection is conducted nearby. UV radiation other than that produced by an actual fire is referred to as “background UV.” An example of a high level of background UV could be the case of a flare stack situated outside of a building.
sensitivity levels by programming the controller to respond at a pre-determined detector count rate which is dependent upon the intensity of the ultraviolet radiation reaching the detector, which in turn depends on the type of fuel, temperature, flame size, distance from the detector and concentration of UV absorbing vapors present. Programming the controller to respond to a low count rate results in high system sensitivity.
The controller can be configured for isolated or non-isolated current outputs by changing jumpers on circuit board as per Figure 4. Figures 7a, 8a and 9a show the wiring for isolated current outputs and Figures 7b, 8b and 9b show wiring for non-isolated current outputs.
Figure 7a - W iring for U1F-UV with Non-Isolated Current Output - 12 -
Figure 7b - W iring for U1F-UV with Isolated Current Output - 13 -
Figure 8a - W iring for U2F-UV with Non-Isolated Output - 14 -
Figure 8b - W iring Diagram for U2F-UV with Isolated Current Output - 15 -
Figure 9a - W iring for U4F-UV with Non-Isolated Current Output - 16 -
Figure 9b - W iring for U4F-UV with Isolated Current Output - 17 -
POSITION AND DENSITY OF DETECTORS The detector has a nominal 120º cone of vision. In an application such as a loading rack with a ceiling height of 25 feet (7.5 meters) where it is desired to have complete detector coverage at floor level and a detector is mounted 2 feet (0.
time delay. See Figure 11a below. The switch banks are numbered from top to bottom as SW 5, SW 4 and SW 3. Individual ON/OFF switches are designated “SW X.Y where ‘X’ refers to the switch bank and ‘Y’ refers to the switch number on ‘X’ bank. See Figure 11b. . Figure 11b - Dip Switch Figure 11a - Dip Switch Position CHANNEL SELECTION Switches SW 3.1 through SW 3.4 enable the detectors that are to be connected to the controller.
The switch values are added together. These switches are factory set to a sensitivity of 24 counts per second, as shown in the example. Example: SW SW SW SW 4.1 4.2 4.3 4.4 ON ON OFF OFF sensitivity = 24 cps FIRE AREA VOTING SEQUENCE (not applicable to U1F) SW 4.5, SW 4.6 and SW 4.8 select voting sequence which can be Fire Area 1 only (all detectors in one area) or Fire Area 1 separate from Fire Area 2.
< SW 5.
TIME DELAY FOR AREA ALARMS NOTE Time delay affects the Area alarms only; the instant alarm operates as soon as a flame is detected. The time delay for the Area alarms is set using SW 5.3 to SW 5.7. If all of the switches are placed in the ‘OFF’ position the time delay will be 0.5 seconds (minimum setting). < < < < < < SW SW SW SW SW SW 5.3-7: 5.3: ON: 5.4: ON: 5.5: ON: 5.6: ON: 5.7: ON: OFF: 0.5 sec. time delay 0.5 sec. time delay 1 sec. time delay 2 sec. time delay 4 sec. time delay 8 sec.
Figure 11c - Relay Position Figure 11d - Relay Settings Unit IV SYSTEM OPERATION STARTUP PROCEDURE CAUTION Placing the controller in the Bypass mode inhibits its outputs, preventing actuation of any extinguishing or alarm circuits that are connected. For maximum safety, however, secure output loads (remove power from any devices that would normally be actuated by the system) before manually testing the system. Remember to place this same equipment back into service when the test is complete. 1.
The visual integrity test and the count test are performed at the same time. 1. Place the controller in the bypass mode (all outputs inhibited) by keeping the MENU/SET switch activated until ‘Chc’ ‘Err’ or ‘bPS’ are shown on the digital displays. Release the switch and activate it again until ‘bPS’ is shown on the right side of the display, then activate the SELECT/RESET switch. The right digital display will show ‘Chn’ and the left side of the digital display will show ‘bPS’. 2.
ALTERNATE TEST PROCEDURE After each channel is offered for selection in the bypass mode a final ‘test bPS’ selection is offered. All channels are now in the test bypass mode. In this mode the counts per second, normally seen when a channel is in bypass, are not seen and the Channel, Instant, and Area LEDs will operate as they would in the normal operating mode (ie. flash when a fire condition exists etc.), but the relay and current outputs are inhibited.
Current Output Situation 0 mA Off or Shorted signal output, or loss of power 1 mA Fault 2 mA Power Fault 4 mA Normal 5 mA VI fault channel 1 6 mA VI fault channel 2 7 mA VI fault channel 3 8 mA VI fault channel 4 9 mA VI fault more than one channel 15 mA Instant alarm channel 1 16 mA Instant alarm channel 2 17 mA Instant alarm channel 3 18 mA Instant alarm channel 4 19 mA Instant alarm more than one channel 19.
LEFT RIGHT DISPLAY DISPLAY ERROR W HAT TO DO 290 gnd Grounding problem with detector 290 Vdc supply. Check wiring to detector, 290Vdc may be shorted to ground. 290 OLo +290 Vdc detector power too low. Contact Factory. 290 OHi +290 Vdc detector power too high. Contact Factory. 12 OUT Internal 12 Vdc supply out of operating range.1 Recycle power and call factory if problem persists. 5 OUT Internal 5 Vdc supply out of operating range.1 Recycle power and call factory if problem persists.
SELECT/RESET switch to choose the selection. To exit the main menu without choosing an option, toggle through the selections until ‘rtn’ is shown on the lower display. ERROR CHECK MODE (Err Chc) This is the first selection in the main menu. Enter the main menu and activate the SELECT/RESET switch when ‘Chc’ is shown on the left side of the display and ‘Err’ is shown on the right side of the display ‘dsP’ will be shown on the left side of the display and ‘Err’ on the right side of the display.
area output is reached (‘gPA’ = Area 1 and ‘gPb’ = Area 2), then activate the SELECT/RESET switch.
Unit V MAINTENANCE ROUTINE MAINTENANCE The detector requires no periodic calibration. To maintain maximum sensitivity, the viewing windows should be cleaned on a routine basis depending on the type and amount of contaminants in the area. The rubber O-rings on the detector housing are used to ensure it is watertight. The housings should be opened periodically and the O-rings inspected for breaks, cracks or dryness. To test them, remove the O-rings from the detector housing and stretch them slightly.
Prior to returning items, contact the nearest distribution office so that an RMI (Return Material Identification) number can be assigned. A written statement describing the malfunction must accompany the returned item to simplify finding the cause of the failure and reduce the time and cost of the repair. Pack the item to protect it from damage and use an anti-static bag or aluminumbacked cardboard as protection from electrostatic discharge.
APPENDICES
Appendix A Net Safety Monitoring Inc. Electrostatic Sensitive Device Handling Procedure W ith the trend toward increasingly widespread use of microprocessors and a wide variety of other electrostatic sensitive semiconductor devices, the need for careful handling of equipment containing these devices deserves more attention than it has received in the past. Electrostatic damage can occur in several ways. The most familiar is by physical contact.
Appendix B Procedure For Activating Reed Switches W hen activating the MENU/SET and SELECT/RESET reed switches, it is important to orient the magnets provided with the device in the proper direction. They are to be positioned on the faceplate with the curved edge facing the glass. Do not place the flat surface of the magnet against the faceplate. Refer to the diagrams below.
Appendix C Record Of Dip Switch Settings DIP SWITCH ON SW 3.1 SW 3.2 SW 3.3 SW 3.4 SW 3.5 SW 3.6 SW 3.7 SW 3.8 SW 4.1 SW 4.2 SW 4.3 SW 4.4 SW 4.5 SW 4.6 SW 4.7 SW 4.8 SW 5.1 SW 5.2 SW 5.3 SW 5.4 SW 5.5 SW 5.6 SW 5.7 SW 5.
Appendix D Common Ultra-Violet Absorbing Gases Since the UVC120 fire detector is designed to detect fires by responding to the ultra-violet (UV) radiation they emit, it is very important to be aware of UV absorbing gases that may be present between the detector and the sources of potential fires.
Appendix E Wire Resistance In Ohms DISTANCE (FEET) AWG #20 AWG #18 AWG #16 AWG #14 AWG #12 AWG #10 100 1.02 0.64 0.40 0.25 0.16 0.1 0.06 200 2.03 1.28 0.80 0.51 0.32 0.2 0.13 300 3.05 1.92 1.2 0.76 0.48 0.3 0.19 400 4.06 2.55 1.61 1.01 0.64 0.4 0.25 500 5.08 3.2 2.01 1.26 0.79 0.5 0.31 600 6.09 3.83 2.41 1.52 0.95 0.6 0.38 700 7.11 4.47 2.81 1.77 1.11 0.7 0.44 800 8.12 5.11 3.21 2.02 1.27 0.8 0.5 900 9.14 5.75 3.61 2.27 1.43 0.9 0.
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