Emerson U1F, U2F, U4F-UV, UVC120 User Manual

MODEL: U1F, U2F & U4F-UV and UVC120
ULTRAVIOLET FIRE DETECTION SYSTEM
1, 2 and 4 Channel Field Mount Controller
with the UVC120 Detector
Part Number: MAN-0016-00 Rev. 2
Copyright © 2002 Net Safety Monitoring Inc. Printed in Canada
This m anual is provided for informational purposes only. Although the information contained in this manual is believed to be accurate, it could include technical inaccuracies or typographical errors. Changes are, therefore, periodically made to the information within this document and incorporated without notice into subsequent revisions of the manual. Net Safety Monitoring Inc. assum es no responsibility for any errors that m ay be contained within this manual.
This manual is a guide for the use of a 1, 2 and 4 Channel Field Mount Controller and the data and procedures contained within this document have been verified and are believed to be adequate for the intended use of the controller. If the controller or procedures are used for purposes other than as described in the manual without receiving prior confirmation of validity or suitability, Net Safety Monitoring Inc. does not guarantee the results and assumes no obligation or liability.
No part of this manual may be copied, disseminated or distributed without the express written consent of N et Safety Monitoring Inc.
Net Safety Monitoring Inc. products, are carefully designed and m anufactured from high quality components and can be expected to provide many years of trouble free service. Each product is thoroughly tested, inspected and calibrated prior to shipment. Failures can occur which are beyond the control of the manufacturer. Failures can be minimized by adhering to the operating and maintenance instructions herein. Where the absolute greatest of reliability is required, redundancy should be designed into the system.
Net Safety Monitoring Inc., warrants its sensors and detectors against defective parts and workmanship for a period of 24 months from date of purchase and other electronic assemblies for 36 months from date of purchase.
No other warranties or liability, expressed or implied, will be honoured by Net Safety Monitoring Inc.
Contact Net Safety Monitoring Inc. or an authorized distributor for details.
Table of Contents
Unit I GENERAL INFORMATION ................................... 1
DESCRIPTION ............................................................... 1
FEATURES .................................................................. 1
CONTROLLER SPECIFICATIONS................................................ 1
Figure 1 - Controller Dimensions ........................................... 2
DETECTOR SPECIFICATIONS ........................................... 2
Figure 2b - Swivel Mount Dimensions ....................................... 3
Figure 2a - Detector Dimensions ........................................... 3
BASIC OPERATION - CONTROLLER ............................................. 4
CONTROLLER FACEPLATE DESCRIPTION ................................. 4
Figure 3 - Controller Face-Plate ............................................ 4
OUTPUTS ............................................................ 5
Table 1 - Selectable Output Options ........................................ 5
Figure 4 - Jum per Selection for Isolated or Non-Isolated Current Outputs . . . . . . . . . . . 5
PROGRAMMING OPTIONS .............................................. 6
EXTERNAL RESET ..................................................... 6
AUTOMATIC DIAGNOSTICS AND FAULT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . 6
VOTING LOGIC (not applicable to U1F) ..................................... 7
DETE CTOR.................................................................. 7
Unit II UV FIRE DETECTION ...................................... 7
SYSTEM APPLICATION ........................................................ 7
DETECTOR SENSITIVITY ...................................................... 8
SPECTRAL SENSITIVITY RANGE ......................................... 8
Figure 5 - Various Spectral Distributions ..................................... 8
CONE OF ............................................................ 9
VI SI ON ............................................................... 9
Figure 6 - Detector Cone of Vision .......................................... 9
SYSTEM SENSITIVITY......................................................... 9
Unit III SYSTEM INSTALLATION .................................. 10
INSTALLATION............... .................. .................. ........... 10
GENERAL WIRING REQUIREMENTS ..................................... 10
CONTROLLER WIRING ................................................ 10
Figure 7a - Wiring for U1F-UV with Non-Isolated Current Output . . . . . . . . . . . . . . . . . 12
Figure 7b - Wiring for U1F-UV with Isolated Current Output . . . . . . . . . . . . . . . . . . . . . 13
Figure 8a - Wiring for U2F-UV with Non-Isolated Output . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 8b - Wiring Diagram for U2F-UV with Isolated Current Output . . . . . . . . . . . . . . 15
Figure 9a - Wiring for U4F-UV with Non-Isolated Current Output . . . . . . . . . . . . . . . . . 16
Figure 9b - Wiring for U4F-UV with Isolated Current Output . . . . . . . . . . . . . . . . . . . . . 17
POSITION AND DENSITY OF DETECTORS....................................... 18
MOUNTING THE DETECTOR ........................................... 18
Figure 10 - D etector with Swivel Mount Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DIP SWITCH SETTINGS ...................................................... 18
Figure 11b - Dip Switch ................................................. 19
Figure 11a - Dip Switch Position .......................................... 19
CHANNEL SELECTION................................................. 19
CONTROLLER SENSITIVITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FIRE AREA VOTING SEQUENCE (not applicable to U1F) . . . . . . . . . . . . . . . . . . . . . . 20
RELAY OUTPUTS LATCHING/NON-LATCHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
RELAY OUTPUTS ENERGIZED/DE-ENERGIZED . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
TIME DELAY FOR AREA ALARMS ........................................ 21
RELAY SETTINGS ........................................................... 21
Figure 11c - Relay Position .............................................. 21
Figure 11d - Relay Settings .............................................. 21
Unit IV SYSTEM OPERATION ....................................22
STARTUP PROCEDURE ................................................22
CHECKOUT PROCEDURE ..............................................22
MANUAL vi CHECK/COUNT TEST ........................................22
MANUAL CHECK PROCEDURE ..........................................23
ALTERNATE TEST PROCEDURE ......................................... 24
NORMAL OPERATION ........................................................ 24
FIRE RESPONSE ...................................................... 24
Table 2 - Current Outputs ................................................25
AUTOMATIC DIAGNOSTICS AND FAULT IDENTIFICATION . . . . . . . . . . . . . . . . . . . 25
Table 3 - Error Codes ................................................... 26
MAIN MENU ................................................................. 26
BYPASS MODE (bPS) .................................................. 27
SPECIAL FUNCTION MENU ....................................................27
FORCED CURRENT OUTPUT MODE (FoP).................................27
CURRENT CALIBRATION MODE (CuC) .................................... 28
ADDRESS SET MODE (Adr Set) (Do not use) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Unit V MAINTENANCE .......................................... 29
ROUTINE MAINTENANCE ..................................................... 29
TROUBLESHOOTING ............... ............... .................. .........29
DEVICE REPAIR AND RETURN ................................................. 29
Appendix A Net Safety Monitoring Inc. Electrostatic Sensitive Device
Handling Procedure ............................................ 32
Appendix B Procedure For Activating Reed Switches . . . . . . . . . . . . . . . . 33
Appendix C Record Of Dip Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix D Common Ultra-Violet Absorbing Gases . . . . . . . . . . . . . . . . . . 35
Appendix E Wire Resistance In Ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Unit I GENERAL INFORMATION
DESCRIPTION
The UVC120 Flame Detectors combined with the U1F, U2F or U4F-UV Fire Controller provide fast, reliable flame detection in a wide variety of applications. The microprocessor based controllers sim ultaneously monitor up to four ultraviolet (UV) detectors to provide maximum operating flexibility at minimum expense. The Automatic Visual Integrity (vi) feature provides a continuous check of optical surfaces, sensitivity and electronic circuitry of the detector/controller system. Automatic fault identification monitors system operation and provides a digital display of system status using a numerical code. Controller response includes actuation of relays for direct control of field response devices and a full array of faceplate indicators. Other features include individual channel and area identification, "voting" capability and manual vi testing.
FEATURES
< Non-Intrusive testing activated by magnets < Instantaneous response to ultraviolet radiation < Automatic and manual Visual Integrity (vi) testing < Adjustable sensitivity and time delay < All automatic test functions performed with the system on line < Automatic fault identification < Individual channel identification with voting options < Latching Area LEDs identify the area responding to fire < Microprocessor-based controller is easily field-programmable. < Two digital displays, one bar graph display and high intensity LEDs indicate
system status information
< Relay outputs are field adjustable as latching or non-latching < Alarm relays are programmable for normally energized or de-energized operation < Individual detector output (count rate) can be visually monitored on the digital
display
< Two 4-20mA current outputs (U2F and U4F). One 4-20mA output on U1F < Conduit seals recommended to prevent moisture damage but not required
CONTROLLER SPECIFICATIONS
< Operating Voltage:
24 Volts DC nominal. 18 to 32Vdc.
< Power Consumption (controller only):
2.4 watts nom inal, 4.4 watts m aximum. 100 mA nominal, 180 mA maximum at 24 Volts DC.
Maximum startup current is 1.5 Amperes for 10 milliseconds. Power supplies with fold back current limiting are not recom mended.
< Maximum Ripple:
Ripple should not exceed 5 Volts peak-to-peak. The sum of DC plus ripple must be $18 Vdc and #32 Vdc
< Temperature Range:
Operating: -40ºC to +85ºC (-40ºF to +185ºF) Storage: -55ºC to +150ºC (-65ºF to +302ºF)
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< Relay Contacts:
Normally open/normally closed contacts rated for 5 Amperes at 30 Volts DC/ 250 Volts AC
< Current Outputs:
4-20mA DC into a maximum external loop resistance of 600 Ohms at 18-32 Volts DC
< Dimensions:
Refer to Figure 1
< Shipping Weight (approximate):
2 lbs (0.9 kilograms)
< Certification:
CSA, NRTL/C, NEMA 4X certified for hazardous locations Class 1, Division 1, Groups B, C and D IEC approval (Class 1, Zone 1 Groups IIB+H2 T5)
< System Sensitivity:
Sensitivity for the standard controller is field adjustable over a range of 8 through 120 counts per second (cps) in increments of 8 cps. The maximum response distance is achieved at an 8 cps sensitivity setting. For applications involving high background radiation potential, the system can be de-sensitized by increasing the count rate required to actuate alarms. The 120 cps setting is the lowest sensitivity.
< Response Time:
Response to a saturating (high intensity) UV source is typically 10 milliseconds for the instant alarm outputs and 0.5 seconds for the area alarm outputs when sensitivity is set for 8 cps and time delay is set for 0.5 seconds (minimum settings).
Figure 1 - Controller Dimensions
DETECTOR SPECIFICATIONS
< Operating Voltage:
290Vdc ± 3Vdc (provided for controller)
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< Power Consumption (each detector):
0.29 Watts nominal, 0.5 Watts maximum 1 mA nominal, 1.7 mA maximum
< Temperature Range:
Operating: -40ºC to +125ºC (-40ºF to +257ºF) Storage: -55ºC to +150ºC (-65ºF to +302ºF)
< Dimensions:
Refer to Figures 2a and 2b
< Detector Enclosure Materials:
Available in anodized copper-free aluminum or optional stainless steel
< Shipping Weight (approximate):
2 lbs (0.9 kilograms)
< Certification:
CSA, NRTL/C, NEMA 4X certified for hazardous locations Class 1, Division 1, Groups B, C and D IEC approval (Class 1, Zone 1 Groups IIB+H2 T5)
< Spectral Sensitivity Range:
The detector responds to UV radiation over the range of 185 to 260 nanometres (1850 to 2600 angstroms)
< Cone of Vision:
The Detector has a nominal 120 degree cone of vision
Figure 2a - Detector Dimensions
Figure 2b - Swivel Mount Dimensions
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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 push- button 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. If a fire alarm
or visual integrity fault is detected, it indicates the channel number of the alarm or fault. The digital displays indicate system status including system error codes, visual integrity (vi) faults, system faults or fire alarms. The right side of the display shows ‘nor’ in normal operating mode. If more than one channel is in an alarm or fault condition the digital displays will cycle through these channels. Since at least one side of the display is always lit they also function as a power indicator.
< Bar Graph Display - Normally off. Flashing when fire detected in any area.
< Instant LED - (no time delay) Flashes when any detector signal exceeds the fire
sensitivity setting.
< Area 1 & 2 LEDs - (Area 1 only for U1F) If the selected “voting” criteria of the
area and the preset time delay has elapsed the corresponding LED starts flashing.
< Fault LED - flashes upon detection of an overall system fault or vi fault.
< Channel LEDs - (1, 2 or 4 depending on m odel) flash to indicate detector in
alarm and remain illuminated until reset after an alarm condition has returned to normal.
< MENU/SET Reed Switch - is used to enter the main menu, to toggle through
menu selections and in conjunction with the SELECT/RESET Reed Sw itch to enter the special functions menu.
< SELECT/RESET Reed Switch - is used for a basic system reset, menu selection
and with the MENU/SET Reed Sw itch to enter the special functions m enu. This switch is also used during the m anual vi test.
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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 norm ally 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.
RECOMMENDATION
The fault relay output should not be used to activate an automatic shutdown procedure. The fault output indicates a potential problem with the controller, not an alarm condition.
Refer to Table 1 for a summary of the relay programming options.
Selectable Normally
OUTPUT
1
AREA Y Y Y
Open/Closed
Selectable Normally
Energized/De-Energized
Selectable
Latching/Non-Latching
INSTANT Y Y Y
FAULT Y N N
23
Table 1 - Selectable Output Options
1
2
3
Area alarms are programmed together, not individually. Fault relay is normally energized. Fault relay is non-latching.
Current Outputs:
4-20 mA DC current outputs transmit system inform ation to other devices. The current outputs can be wired for isolated or non-isolated operation by changing the jumpers as shown in Figure 4. Refer to Unit IV, System Operation for a description of the current output signal levels.
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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.
EXTERNAL RESET
A normally open, momentary closure switch connected between the external reset terminal and the negative power terminal provides remote reset.
AUTOMATIC DIAGNOSTICS AND FAULT IDENTIFICATION
The microprocessor-based controller features self-testing circuitry that continuously checks for problems that could prevent proper system response. When power is applied, the microprocessor autom atically tests memory. In the Norm al Operating Mode it continuously monitors the system to ensure proper functioning. A "watchdog" timer is maintained to ensure that the program is running correctly.
The main loop of the operating program continuously cycles through the Automatic Visual Integrity test, checking each detector and its wiring. The microprocessor can be interrupted by
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(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. For a one area configuration, all channels are considered as being in Area 1 and both Area alarm relays will be activated together.
The dip switches can be set so that only one channel need be in alarm to activate the area alarm or any two channels must ‘vote’ (see a fire at the same time) to activate the area alarm. The instant alarm will be activated when any channel sees UV radiation exceeding the preset sensitivity setting, no matter what voting option is being used.
For a two area configuration, channel one (one and two for U4F) make up Area 1 and channel three (three and four for U4F) make up Area 2. With the U4F each Area alarm may be programmed with different voting criteria (ie. Area 1 may be set so that either channel one OR channel two may activate the area alarm, and Area 2 may be set so that both channels three AND four must see the fire at the same time to activate the Area alarm).
DETECTOR
The detector responds to UV radiation over the range of 185 to 260 nanometers. It is not sensitive to direct or reflected sunlight nor to normal artificial lighting.
The detector is housed in an explosion-proof enclosure that is designed to meet most national and international standards. It is available in anodized alum inum or optional stainless steel.
The detector is typically mounted with a swivel mounting assembly which is recommended. Other mounting arrangements are possible.
Unit II UV FIRE DETECTION
SYSTEM APPLICATION
The detector responds instantly to ultraviolet radiation emitted by a flame. It is designed for use in hazardous locations and is suitable for use in outdoor applications.
Typical applications for UV detection systems are:
< around highly combustible m aterials < if instantaneous response to flame is needed < where automated fire protection is required < to protect large capital investments
Petroleum Products Handling
< petroleum loading terminals < offshore platforms < pipeline stations < tank farms
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< 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.
DETECTOR SENSITIVITY
SPECTRAL SENSITIVITY RANGE
The UV fire detector responds to radiation wavelengths of 185 to 260 nanometres (1850 to 2600 angstroms). Figure 5 illustrates the range of sensitivity and compares this range to other forms of radiation. Note that UV radiation reaching the earth from the sun does not extend into the sensitivity range of the detector. Nor does radiation from normal artificial lighting, such as fluorescent, mercury vapor and incandescent lamps.
Figure 5 - Various Spectral Distributions
NOTE
Some mercury vapor lamps can operate for extended periods with cracked or damaged envelopes and will then emit UV radiation in the range of the detector. Remove defective mercury vapor lamps from service.
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