SharpEye | 20/20LB | User guide | SharpEye 20/20LB User guide

USER GUIDE
Ref : NP40LGB
REV A – Nov 2009
GAS DETECTION
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Copyright 2007 by Industrial Scientific
First edition, English version.
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About this Guide
This guide describes the SharpEye Model 40/40L, LB, L4, L4B (UV/IR) Flame Detector and its features
and provides instructions on how to install, operate and maintain the detector.
This guide includes the following chapters and appendixes:
•
Chapter 1, Introduction, provides a general overview of the product, principles of operation, and
performance considerations.
•
Chapter 2, Installing the Detector, describes how to install the detector including preparations
before installation, wiring and mode settings.
•
Chapter 3, Operating the Detector, describes how to power-up and tes t the detector. The chapter
also lists safety precautions you should take when operating the detector.
•
Chapter 4, Maintenance and Troubleshooting, describes basic maintenance procedures, and
troubleshooting and support procedures.
•
Appendix A, Technical Specifications: Lists the detectors technical specifications.
•
Appendix B, Wiring Instructions, lists the wiring instructions for connecting the detector and also
provides examples of typical wiring configurations.
•
Appendix C, RS-485 Communication Network, provides an overview of the RS-485
communications network.
•
Appendix D, Accessories , describes the accessories available for the detector.
•
Appendix E, SIL-2 Features, describes the special conditions to comply with the requirements of EN
61508 for SIL 2 according to TÜV.
4
Abbreviations and Acronyms
Abbreviation
Meaning
ATEX
Atmosphere Explosives
AWG
American Wire Gauge
BIT
Built In Test
EMC
Electromagnetic Compatibility
EOL
End of Line
FOV
Field of View
HART
Highway Addressable Remote Transducer-communication protocol
IAD
Immune at Any Distance
IECEx
International Electrotechnical Commission Explosion
IPA
Isopropyl Alcohol
IR
Infrared
JP4
Jet Fuel
Latching
Refers to relays remaining in the ON state even after the ON
condition has been removed
LED
Light Emitting Diode
LPG
Liquefied Petroleum Gas
mA
MilliAmps (0.001 amps)
MODBUS
Master-slave messaging structure
N.C.
Normally Closed
N.O.
Normally Open
N/A
Not Applicable
NFPA
National Fire Protection Association
NPT
National Pipe Thread
SIL
Safety Integrity Level
UNC
Unified Coarse Thread
VAC
Volts Alternating Current
5
Table of Contents
About this Guide ..................................................................................................................................4
Abbreviations and Acronyms ................................................................................................................5
1 INTRODUCTION ..........................................................................................................................9
1.1
Overview .................................................................................................................................9
1.2
Model and Types ......................................................................................................................9
1.3
Features and Benefits omit some.............................................................................................. 10
1.4
Principles of Operation ........................................................................................................... 11
1.4.1
Detection Principles......................................................................................................... 11
1.4.2
Heated Optics ................................................................................................................. 11
1.4.3
HART Protocol............................................................................................................... 11
1.4.4
RS-485 Modbus .............................................................................................................. 12
1.4.5
Product Certification........................................................................................................ 12
1.5
Performance Considerations .................................................................................................... 13
1.5.1
Detection Sensitivity........................................................................................................ 13
1.5.2
Cone of Vision................................................................................................................ 14
1.5.3
False Alarms Prevention .................................................................................................. 15
1.5.4
Visual Indicators ............................................................................................................. 15
1.5.5
Output Signals ................................................................................................................ 16
1.5.6
Detector Status................................................................................................................ 17
1.5.7
Auxiliary Relay as End-of-Line Resistor ........................................................................... 18
1.6
Internal Detector Tests ............................................................................................................ 18
1.6.1
Continuous Feature Test .................................................................................................. 18
1.6.2
Built-In-Test (BIT).......................................................................................................... 19
2 INSTALLING THE DETECTOR............................................................................20
2.1
General Guidelines ................................................................................................................. 20
2.2
Unpacking the Product............................................................................................................ 21
2.2.1
Checking the Product Type .............................................................................................. 21
2.3
Required Tools ....................................................................................................................... 21
2.4
Certification Instructions ......................................................................................................... 21
2.5
Installation Cables .................................................................................................................. 22
2.5.1
Conduit Installation ......................................................................................................... 22
2.6
Installing the Tilt Mount (part no. 40/40-001) ........................................................................... 23
2.6.1
Tilt Mount Specifications ................................................................................................. 24
2.6.2
Tilt Mount Assembly ....................................................................................................... 24
2.7
Connecting the Detector.......................................................................................................... 25
2.7.1
Verifying the Detector Wiring .......................................................................................... 26
2.8
Configuring your Detector....................................................................................................... 27
2.8.1
Alarm Delay (2.8.1 from 40/40I not applicable remove and renumber 2.8 paras)................. 27
2.8.2
Address Set-up................................................................................................................ 27
2.8.3
Function Set-up............................................................................................................... 28
2.8.4
Heated Optics ................................................................................................................. 28
3
OPERATING THE DETECTOR ............................................................................28
3.1
Powering Up .......................................................................................................................... 28
6
3.2
Safety Precautions .................................................................................................................. 29
3.2.1
Default Functions Settings ............................................................................................... 29
3.3
Testing Procedures ................................................................................................................. 30
3.3.1
Automatic BIT Test......................................................................................................... 30
3.3.2
Manual BIT Test............................................................................................................. 30
3.3.3
Testing with Fire Simulator Model 20/20-311 ................................................................... 30
4
MAINTENANCE AND TROUBLESHOOTING..........................................................31
4.1
Maintenance........................................................................................................................... 31
4.1.1
General Procedures.......................................................................................................... 31
4.1.2
Periodic Procedures......................................................................................................... 31
4.1.3
Keeping Maintenance Records ......................................................................................... 31
4.2
Troubleshooting ..................................................................................................................... 32
APPENDICES.........................................................................................................33
A Technical Specifications ................................................................................................................34
B Wiring Instructions .......................................................................................................................37
C RS-485 Communication Network .................................................................................................40
D Accessories....................................................................................................................................41
E SIL-2 Features ..............................................................................................................................45
7
List of Figures
Figure 1: Horizontal Field of View..................................................................................................................................14
Figure 2: Vertical Field of View ......................................................................................................................................14
Figure 3: Indication LED...................................................................................................................................................16
Figure 4: Detector with Tilt Mount..................................................................................................................................23
Figure 5: Tilt Mount Assembly ........................................................................................................................................24
Figure 6: Tilt Mount Assembly (dimensions in mm and inches)...............................................................................24
Figure 7: Detector with Cover Removed........................................................................................................................25
Figure 8: Wiring Terminals ...............................................................................................................................................38
Figure 9: Typical Wiring For 4 Wire Controllers (Using Option 1 or 2 Wiring)....................................................39
Figure 10: 0-20mA Wiring (Sink) 4-Wire Connection................................................................................................39
Figure 11: 0-20mA Wiring (Source) 3-Wire Connection............................................................................................40
Figure 12: RS-485 Networking ........................................................................................................................................40
Figure 13: SharpEye UV/IR Long Range Fire Simulator 20/20-311 ........................................................................41
Figure 14: 40/40L, LB, L4, L4B UV/IR Detector Target Point .................................................................................42
Figure 15: Tilt Mount.........................................................................................................................................................43
Figure 16: Weather Protection..........................................................................................................................................44
Figure 17: Laser Detection Coverage Pointer................................................................................................................44
Figure 18: Air Shield ..........................................................................................................................................................45
List of Tables
Table 1: Wiring Options....................................................................................................................................................10
Table 2: Detector Versions................................................................................................................................................10
Table 3: Fuel Sensitivity Ranges......................................................................................................................................13
Table 4: Immunity to False Alarm Sources....................................................................................................................15
Table 5: Welding Immunity Distance.............................................................................................................................15
Table 6: LED Indications ..................................................................................................................................................15
Table 7: Available Output Types.....................................................................................................................................16
Table 8: Detector Status.....................................................................................................................................................17
Table 9: Output Signals versus Detector State ..............................................................................................................17
Table 10: Results of a Successful BIT ............................................................................................................................19
Table 11: Results of an Unsuccessful BIT .....................................................................................................................19
Table 12: Results of a Successful Manual BIT..............................................................................................................20
Table 13: Results of an Unsuccessful Manual BIT.......................................................................................................20
Table 14: Tools ....................................................................................................................................................................21
Table 15: USA Version......................................................................................................................................................24
Table 16: European Version .............................................................................................................................................24
Table 17: Model 40/40L, LB, L4, L4B Wiring Options..............................................................................................26
Table 18: Functions............................................................................................................................................................28
Table 19: Default Function Values ..................................................................................................................................29
Table 20: Results of Successful Fire Simulator Test....................................................................................................30
Table 21: Troubleshooting Table .....................................................................................................................................32
Table 22: Contact Ratings.................................................................................................................................................34
Table 23: 16 mA Current Output.....................................................................................................................................35
Table 24: Maximum DC resistance at 68°F (20°C) for copper wire .........................................................................37
Table 25: Wiring length in feet (meter) ..........................................................................................................................38
Table 26: Wiring Connections..........................................................................................................................................39
Table 27: Sensitivity Ranges ............................................................................................................................................42
8
1
INTRODUCTION
1.1
Overview
There are two versions of the 40/40 Series UV/IR Flame Detectors:
•
Model 40/40L (and LB) provides a combination of UV and IR sensors, where the IR sensor operates
at a wavelength of 2.5-3.0 µm, and can detect hydrocarbon-based fuel and gas fires, hydroxyl and
hydrogen fires, as well as metal and inorganic fires.
•
Model 40/40L4 (and L4B) is identical to the 40/40L except that the IR sensor works at a wavelength
of 4.5 µm and is only suitable for hydrocarbon-based fires.
The Built in Test (BIT) feature is only included in models 40/40LB and 40/40L4B.
All 40/40 Series detectors include a heated optical window for improved performance in icing, snow and
condensation conditions.
Detection performance can be easily adapted to all environments, applications and requirements, by
changing the detector’s configuration parameters. Adjusting these parameters, as well and performing
other maintenance and monitoring tasks, is possible by means of RS485-based Modbus communication or
HART communication (in models with 0-20mA output).
The detector enclosure is ATEX certified EExd flameproof with an integral, segregated, rear, EExe
terminal compartment (avoiding exposure of the sensors and electronics to surrounding environment).
Hence the combined approval EExde IIB + H2 T5 (75°C) or T4 (85°C).
The SharpEye 40/40 detectors are designed to operate as a stand-alone unit directly connected to an alarm
system or an automatic fire extinguishing system. The detector can also be a part of a more complex
system, where many detectors and other devices are integrated through a common control unit.
1.2
Model and Types
The 40/40 UV/IR Flame Detectors are provided in various configurations depending on:
•
UV/IR Model
•
Wiring option
•
Temperature range
•
Type of cable entry
•
Housing type
• Required approval
The configuration detail is included in the product part number on the product label and takes the form:
40/40X-XXXXXX, where XXXXXX defines the model according to the above requirements.
To modify the default or pre -ordered configuration and perform maintenance tasks, please refer to the
HART Protocol TM777030 and the RS-48 Manual TM 777050 or TM777060.
The Part Numbers are defined as:
9
Table 1: Wiring Options
Wiring
Option
Connections Provided
1
Power
Manual
BIT
Fault Relay
N.C.
Alarm Relay
N.O.
4-20mA
Sink
RS-485
2
Power
Manual
BIT
Fault Relay
N.C.
Alarm Relay
N.O, N.C.
4-20mA
Source
RS-485
3
Power
Manual
BIT
Fault Relay
N.O.
Alarm Relay
N.O, N.C.
4-20mA
Source
RS-485
4
Power
Manual
BIT
Fault Relay
N.C.
Alarm Relay
N.O.
Auxiliary
N.O.
RS-485
5
Power
Manual
BIT
Fault Relay
N.O.
Alarm Relay
N.O.
Auxiliary
N.O.
RS-485
Note: Wiring option 1 is a Default. The mA ‘sink’ output can be altered to ‘source’ type with a link
between terminals 1 and 8. All other wiring options cannot be changed on site.
Table 2: Detector Versions
Detector Version
Description
L
UV/IR, IR at 2.8 µm, without BIT
LB
UV/IR, IR at 2.8 µm, with BIT
L4
UV/IR, IR at 4.5 µm, without BIT
L4B
UV/IR, IR at 4.5 µm, with BIT
For example, product number 40/40L-321SC has the following options:
1.3
•
Detector Version: UV/IR, IR at 2.8 µm, without BIT
•
Wiring Option: 3 (Power, Manual BIT, RS-485, 0-20mA (Source) with HART Protocol, Fault Relay
(N.O.), Alarm Relay (N.O, N.C.))
•
Temperature Range: 2 (85°C)
•
Cable Entry: 1 (M25)
•
Housing : S (Stainless Steel)
•
Approval : C (ATEX, IECEx)
Features and Benefits omit some
•
UV/IR Dual Sensor
•
High Speed Response: 150msec. response to saturated signal
•
Built In Test (BIT): Manual and Automatic
•
Heated Window: Prevents effects of icing, snow, condensation
•
Electrical Interface:
•
Dry contact relays
•
Communication network RS-485
•
• 0-20mA output
HART Protocol: Communication protocol (see Erreur ! Source du renvoi introuvable. on page
Erreur ! Signet non défini.)
•
EExde: Integral junction box for easy wiring
•
SIL-2: TÜV approved.
•
Hazardous Area Certification: ATEX, IECEx, FM, CSA.
•
EN54-10: Approved by LPCB (BRE, UK).
10
1.4
Principles of Operation
1.4.1
Detection Principles
The Model 40/40L, LB, L4, L4B Flame Detector is an electronic device designed to sense the occurrence
of fire and flames and subsequently activate an alarm or an extinguishing system directly or through a
control circuit.
The UV/IR Radiation Flame Detector is a dual spectrum optical detector sensitive to two separate ranges
of the radiation spectrum, both of which are present in fires. The detector monitors the protected volume,
by measuring the radiation intensity in it, within two frequency ranges of the electromagnetic spectrum,
namely the Ultra-Violet (UV) and the Infra -Red (IR).
The detector integrates two dependent channels in which appropriate detection pulses are registered and
further analyzed for frequency, intensity and duration.
•
Sensing Elements
The IR sensor in Models 40/40L and LB is sensitive to radiation over the range of 2.5-3.0 micron
where the H2 emission has a unique spectral peak that enables detection of hydrocarbon fires, gas
fires, hydroxyl and hydrogen fires as well as metal and inorganic fires.
The IR sensor in models 40/40L4 and L4B is sensitive over a range of 4.4-4.6 µm spectral band where
the CO2 has a unique spectral peak that enables it to detect the combustion product of any organic
substance.
The UV sensor is sensitive to radiation over the range of 0.185-0.260 µm. The UV Channel
incorporates a special logic circuit that eliminates false alarms caused by solar radiation and other
non-fire UV source. Furthermore, the UV channel’s sensitivity is stabilized over the working
temperature range.
•
Detection Levels
Simultaneous detection of radiation in both the UV and the IR channels having an intensity that
exceeds the detector’s preset Warning level results in a Warning signal.
Simultaneous detection of radiation in both the UV and the IR channels having an intensity that
exceeds the detector’s preset Alarm level results in an Alarm signal.
Simultaneous detection of radiation in both the UV and the IR channels having an intensity that
exceeds the detector’s preset Flash-Fire Detection level results in an immediate Alarm signal.
Since the preset dual range and level of radiation, as well as the flickering pattern, are characteristics of
real fire, all other radiation sources apart from actual fire are not detected, thus avoiding false alarms.
1.4.2
Heated Optics
The SharpEye 40/40 Flame Detectors use heated optics. The heater increases the temperature of the
optical surface by 5-8°F (~3-5°C) above the ambient temperature to improve performance in icing,
condensation and snow conditions.
The heated optics can be set to one of the following:
1.4.3
•
Not operated
•
On continuously
•
Automatic, per temperature change (default): you can define the start temperature below which the
window is heated. (The default is 68°F (20°C.) This temperature can be defined between 32°F (0°C)
to 122°F (50°C). The heating stops when the temperature is 27°F (15°C) above the start temperature.
HART Protocol
The 40/40 Flame Detectors use the HART Protocol.
HART Communication is a bi-directional industrial field communication protocol used to communicate
between intelligent field instruments and host systems. HART is the global standard for smart process
instrumentation and the majority of smart field devices installed in plants worldwide are HART -enabled.
HART technology is easy to use and very reliable.
11
Through the HART connection, you are able to perform:
•
Detector set-up
•
Detector troubleshooting
•
Detector health and status
For more details, refer to the HART Manual TM 777030.
1.4.4
RS-485 Modbus
For more advanced communications, the detector has an RS 485 Modbus-compatible output that provides
data communication from a network (up to 247 detectors) to a host computer or universal controller for
central monitoring. This feature allows for reduced installation costs, easy maintenance and local or
remote diagnostic tools.
1.4.5
Product Certification
1.4.5.1
ATEX, IECEx
The 40/40L, LB, L4, L4B Flame Detector is certified to:
•
ATEX Ex II 2 GD per SIRA 07ATEX 1149 and IECEx SIR. 07.0085.
•
EExde IIB + H2 :
•
T5 Ambient Temp. -55°C to +75°C.
• T4 Ambient Temp. -55°C to +85°C.
This product is suitable to use in hazardous zones 1 and 2 with IIB + H2 gas group vapors present.
1.4.5.2
FM, CSA
The 40/40L, LB, L4, L4B Flame Detector is certified to FM and CSA Explosion Proof per:
1.4.5.3
•
Class I, Division 1, Groups B, C and D, T5 Ta = 85°C.
•
Dust Ignition Proof – Class II/III Division 1, Groups E, F and G.
•
Ingress Protection – IP67, IP66, NEMA 250 Type 6P.
•
For more details see Report Project ID3029553.
SIL-2 Approved (TÜV)
The 40/40L, LB, L4, L4B Flame Detector is certified to SIL-2 requirement per IEC 61508.4, Chapter
3.5.12.
The alert condition according to SIL-2 can be implemented by:
1.4.5.4
•
Alert signal via 0-20mA current loop.
or
•
Alert signal via alarm relay and fault relay.
•
For more details and guidelines for configuring, installing, operating and service and TÜV Report No.
968/EZ326.00/008.
EN54-10 (LPCB)
•
The 40/40LB and L4B flame detector is certified to EN54-10 and CPD.
•
The detector has been tested and approved per EN54-10 by LPCB
(BRE, UK).
•
This test includes functional test, environmental test, EMI/EMC test and software check.
•
For more details see EN54-10 Report No. TE243256.
12
1.5
Performance Considerations
1.5.1
Detection Sensitivity
Detection sensitivity is the maximum distance at which the detector reliably detects a specific size of fire
and typical type of fuel (standard fire).
1.5.1.1
Standard Fire
Defined as a 1ft 2 / 0.1m2 n-heptane, with maximum wind speed of 6.5 ft/sec (2 m/sec).
1.5.1.2
Sensitivity Ranges
The detector has two response levels.
•
WARNING (Pre-alarm)
•
ALARM
The detection distance for the ALARM level is 50 ft (15m) from the standard fire.
The detection distance, for the WARNING level, is approximately 10% higher than the ALARM distance.
For some typical ambient conditions the Zeta parameter as defined in NFPA 72 for the detector is 0.005
(1/meter).
Note: Zeta parameters may vary significantly with changes in temperature, air pressure, humidity,
visibility conditions, and so on.
1.5.1.3
Other Fuels
The detector reacts to other types of fire as follows:
•
The baseline fire refers to n-heptane 1ft 2 (0.1m2 ) and is defined as 100% sensitivity.
•
For fuel fires – standard pan fire size: 1 ft 2 (0.1 m2 ).
•
For gas flames - 20 inch (0.5m) high, 8 inch (0.2m) width plume fire.
•
Maximum Response Time: 10 sec.
Table 3: Fuel Sensitivity Ranges
Max. Distance (ft/m)
Type Of Fuel
L/LB
L4/L4B
Gasoline
50/15
50/15
N-Heptane
50/15
50/15
JP4
37/11
37/11
Kerosene
37/11
37/11
Diesel Fuel
37/11
37/11
Alcohol 95%
25/7.5
25/7.5
IPA
25/7.5
25/7.5
Methanol
25/7.5
25/7.5
Methane
15/4.5
15/4.5
LPG
15/4.5
15/4.5
Paper
15/4.5
15/4.5
Polypropylene
15/4.5
15/4.5
Hydrogen
15/4.5
-
13
1.5.2
Cone of Vision
•
Horizontal: 100°
Figure 1: Horizontal Field of View
•
Vertical : +50° (down) , -45° (up)
Figure 2: Vertical Field of View
14
1.5.3
False Alarms Prevention
To prevent false alarms, the detector will not alarm or react to the radiation sources specified in table 4
Table 4: Immunity to False Alarm Sources
Immunity
Distance ft(m)
Radiation Source
Indirect or reflected sunlight
IAD
Vehicle headlights (low beam) conforming to MS53023-1
IAD
Incandescent frosted glass light, 300 W
IAD
Fluorescent light with white enamel reflector, standard office or shop, 70 W (or two 35 W)
IAD
15
IAD
5
9.8 (3)
Electric arc [12mm ( /32") gap at 4000 V alternating current, 60 Hz]
Arc welding [6 mm ( /16 ") rod; 210 A]
Ambient light extremes (darkness to bright light with snow, water, rain, desert glare and
fog)
IAD
Bright colored clothing, including red and safety orange.
IAD
Electronic flash (180 watt-seconds minimum output)
IAD
Movie light, 625 W quartz DWY lamp (Sylvania S.G.-55 or equivalent)
>6.5 (2)
Blue-green dome light conforming to M251073-1
IAD
Flashlight (MX 991/U)
IAD
Radiation heater, 3000 W
IAD
Radiation heater, 1000 W with fan
IAD
Quartz lamp (1000 W)
12 (4)
Mercury vapor lamp
IAD
Grinding metal
3.3 ft (1)
Lit cigar
IAD
Lit cigarette
IAD
Match, wood, stick including flare up
3.3 ft (1)
Notes:
1.5.4
•
IAD = Immune at Any Distance.
•
All sources are chopped from 0 to 20 Hz.
Visual Indicators
One 3-color LED indicator is located inside the detector window, as shown in Figure 3. The detector
statuses are listed in table 5.
Table 5: LED Indications
Detector Status
LED color
LED mode
Fault, BIT Fault
Yellow
4 Hz - flashing
Normal
Green
1 Hz - flashing
Warning
Red
2 Hz - flashing
Alarm
Red
Steady
15
Indicator LED
Figure 3: Indication LED
1.5.5
Output Signals
Outputs are available according to the default configuration or the wiring options selected for the detector.
Determine the outputs for your model according to table 6.
The detector incorporates several types of output suitable to different control systems:
•
0-20mA (stepped) with HART
•
Relays (Alarm, Fault, Auxiliary)
• RS-485 Modbus
Table 6: Available Output Types
Output Type
Wiring Version
Detector Status
Alarm relay
40/40L, LB, L4, L4B – Options
1XXXX, 4XXXX, 5XXXX
The relay is N.C.
40/40L, LB, L4, L4B – Options
2XXXX, 3XXXX
The relay is N.O. and N.C.
Auxiliary relay
40/40L, LB, L4, L4B – Options
4XXXX and 5XXXX
The relay is N.O.
Fault relay
40/40L, LB, L4, L4B – Options
1XXXX, 2XXXX, 4XXXX
The relay is N.C. energized
40/40L, LB, L4, L4B – Options
3XXXX, 5XXXX
The relay is N.O. energized
40/40L, LB, L4, L4B – Option
1XXXX
SINK Option,
40/40L, LB, L4, L4B – Options
2XXXX and 3XXXX
SOURCE Option,
All versions
Modbus Protocol
0-20mA current
output
RS-485
16
with HART protocol can be changed to
Source – see Figure 10
with HART protocol
1.5.6
Detector Status
The possible detector function statuses are listed in table 7. A more detailed fault analysis can be seen via
HART or RS485.
Table 7: Detector Status
Status
Description
Normal
Normal operation.
BIT
Built-In-Test being performed.
Warning
Fire detected - changed to Warning (pre-alarm state).
Alarm
Fire detected - changed to Fire Alarm state.
Latched Alarm
(Optional)
The alarm outputs remain latched on following detection of a fire
that has already been extinguished.
BIT Fault
A fault is detected during BIT sequence or other electric failure.
The detector will continue to detect for fire.
Fault
A fault is detected when the power supply is too low or due to a
software fault or electrical failure. The detector will NOT detect
fire in this condition.
In each state, the detector activates different outputs, as specified in Table 8
Table 8: Output Signals versus Detector State
Detector State
Normal
LED
Indicator
Green
LED
Mode
Alarm
Relay
1Hz
Off
Auxiliary
Relay
Off
mA output
On
5mA
On
10mA
Warning
Red
2Hz
Off
Alarm(1)
Red
Constant
On
On
On
15mA
Red
Constant
On
Off
On
15mA
On
15mA
Latch
(2)
On
(4)
Fault
Relay
On
BIT Fault
(3)
(4)
Yellow
4Hz
Off
Off
Off
2mA
Warning at
BIT Fault
Red
2Hz
Off
On (4)
Off
10mA
Alarm at BIT
Fault
Red
Constant
On
On
Off
15mA
Yellow
4Hz
Off
Off
Off
0mA
Fault
Notes:
1 The alarm outputs are activated while alarm conditions exist and will stop approximately 5 seconds
after the fire is no longer detected.
2 The Alarm state can be optionally latched via programmed function. (Default is non-latching).
3 The detector will remain in BIT Fault state until it has passed a successful BIT.
4
5
The Auxiliary Re lay can be activated at the Warning level or Alarm level, depending on programmed
function.
The outputs depend on the wiring options.
17
1.5.6.1
Optional Latching
Alarms are set as non-latching by default. However, the detector includes a latched alarm output
capability, which operates according to the programmed function.
If selected, upon detection of a fire, the detection signal is latched until a manual reset is performed
(disconnecting the power supply or performing a manual BIT Latching affects the Alarm Relay, 0-20mA
output, the Alarm LED (the Auxiliary Relay will be latched only when the programmable function
Auxiliary Relay is set to YES.
Notes:
1.5.7
•
The Auxiliary Relay is available only in Models 40/40L, LB, L4 or L4B– 4XXXX and 5XXXX
•
The 0-20mA is available only in Models 40/40L, LB, L4 or L4B – 1XXXX, 2XXXX, 3XXXX
Auxiliary Relay as End-of-Line Resistor
The Auxiliary Relay can be used as End-of-Line (EOL) resistance in Models 40/40L, LB, L4 or L4B 4XXXX, and 5XXXX only. In this case, the Auxiliary Relay is active as long as the detector is not in
Fault state.
1.6
Internal Detector Tests
1.6.1
Continuous Feature Test
During normal operation, the detector tests itself continuously and indicates a fault if a failure is found.
This type of test complies with SIL-2 require ments.
The detector continuously tests:
•
Input voltage level
•
All internal regulator voltage level
•
Voltage level status of sensor and sensor circuitry for noise or disconnection in the electronic circuitry
•
0-20mA level output
•
Relays and heater operation
•
Processor Watch dog
•
Software
•
Memory
•
Oscillator frequency
Response to Fault Indication
If a failure is found, the detector indicates by:
•
Fault relay:
•
Opens in wiring option 1, 2, and 4
•
Closes in wiring option 3 and 5
•
0-20mA: indicates Fault (0mA or 2mA) in wiring option 1, 2, 3
•
LED – Yellow flashes (4 Hz)
Correcting the Fault
The fault indications remain until the detector’s power is removed. The fault indications return if the fault
is still found when power is restored.
18
1.6.2
Built-In-Test (BIT)
The detector’s Built-In-Test (BIT) also checks the following:
•
Electronics circuitry
•
Sensors
• Window cleanliness
The detector can be set to perform the BIT in the following modes:
•
Automatically and manually
• Manually only
Note: In Manual BIT, the outputs may also be tested and Control System ‘inhibit’ should be applied if this
could initiate other systems.
1.6.2.1
How the BIT Operates
•
The detector's status remains unchanged if the result of a BIT is the same as the current status
(NORMAL or BIT Fault)
•
the detectors’ status is changed (from Normal to BIT Fault or vice versa) if the BIT differs from the
current status
Note: In ‘BIT Fault’ status the detector can continue to detect a fire.
1.6.2.2
Automatic BIT
The detector automatically performs a BIT every 15 minutes. A successful BIT sequence does not activate
any indicator.
The results of a successful and unsuccessful BIT are listed in table 9 and table 10
Table 9: Results of a Successful BIT
Output
Result
Fault relay
•
Wiring options 1, 2, 4: remains CLOSED
•
Wiring options 3 and 5: remains OPEN
0-20mA output
Wiring option 1, 2, 3: Normal (4mA)
Power LED
Green, Flashing, 1 Hz On (Normal)
Table 10: Results of an Unsuccessful BIT
1.6.2.3
Output
Result
Fault relay
•
Wiring option 1, 2, 4: changes to Open
•
Wiring option 3 and 5: changes to Closed
0-20mA output
Wiring option 1, 2, 3: BIT Fault (2mA)
Power LED
Yellow, Flashing, (4 Hz)
BIT procedure
Performed every 1 minute
Manual BIT
The BIT is manually initiated by momentarily connecting Terminal 3 with Terminal 2 (or a switch across
these terminals in the safe area).
If the BIT is unsuccessful, all outputs will function as described for Automatic BIT, but the BIT is now
automatically executed every 1 minute. This continues until a successful BIT occurs, when the detector
will resume normal operation.
The results of a successful and unsuccessful Manual BIT are listed in table 11 and table 12
19
Table 11: Results of a Successful Manual BIT
Output
Result
FAULT relay
•
Wiring options 1, 2, and 4: remains CLOSED (Normal)
•
Wiring options 3 and 5: remains OPEN (Normal)
ALARM relay
Activated for 3 sec (only when the function Alarm BIT is set to YES)
AUXILIARY
relay
For wiring options 4 and 5: is activated for 3 sec (only when the function Auxiliary
BIT is set to YES)
0-20mA output
Wiring option 1, 2, 3:
•
•
POWER LED
Initiates 20mA only when the function Alarm BIT is set to YES
Initiates 16mA when the function Auxiliary BIT is set to YES and the function
Alarm BIT is set to NO
Green, Flashing, 1 Hz
Table 12: Results of an Unsuccessful Manual BIT
1.6.2.4
Output
Result
FAULT relay
•
Wiring option 1, 2, 4: changes to OPEN
•
Wiring option 3 and 5:changes to CLOSED
0-20mA output
Wiring option 1, 2, 3: Indicates BIT FAULT (2mA)
POWER LED
Yellow, Flashing, 4 Hz
Manual BIT only selected
The BIT is initiated manually by momentarily connecting Terminal Number 3 with Terminal Number 2 or
a switch across these terminals in the safe area.
2
INSTALLING THE DETECTOR
This chapter provides basic guidelines for installing the detector. It does not attempt to cover all of the
standard practices and codes of installation. Rather, it emphasizes specific points of consideration and
provides some general rules for qualified personnel. Wherever applicable, special safety precautions are
stressed.
2.1
General Guidelines
To ensure optimal performance and an efficient installation, consider the following guidelines:
•
•
Sensitivity: To determine the level of sensitivity, consider the following:
•
Size of fire at the required distance to be detected
•
Type of flammable materials
Spacing and Location: The number of detectors and their locations in the protected area are
determined by:
•
Size of the protected area
•
Sensitivity of the detectors
•
Obstructed lines of sight
•
Cone of view of the detectors
20
•
•
Environment:
•
Dust, snow or rain can reduce the detectors sensitivity and require more maintenance activities.
•
The presence of high intensity flickering IR sources may affect sensitivity.
Aiming the Detector:
•
The detector should be aimed toward the center of the detection zone and have a completely
unobstructed view of the protected area.
•
Whenever possible, the detector face should be tilted down at a 45º angle to maximize coverage
and prevent accumulation of dust and dirt.
•
Do not start an installation unless all conceivable considerations regarding detection location
have been taken into account.
Installation should comply with NFPA 72E or any other local and International regulations and
standards , as applicable to flame detectors and installation of Ex approved products.
2.2
Unpacking the Product
Upon receipt of your detector, check and record the following:
6 Verify the appropriate Purchase Order.
7
8
2.2.1
Record the Part Number (P/N) and Serial Number of the detectors, and the installation date in an
appropriate Log-book.
Open the package before installation and visually inspect the detector.
Verify that all components required for the detector installation are readily available before beginning
the installation. If the installation is not completed in a single session, secure and seal the detectors
and conduits / cable entries.
Checking the Product Type
Check that your product has the configuration / options that you ordered.
2.3
Required Tools
The detector can be installed using general-purpose common tools and equipment. Table 13 lists the
specific tools required to install the detector.
Table 13: Tools
Tool
Function
Hex Key ¼ inch
Mount the detector on the tilt mount
Hex Key 3 /16 inch
Open and close detector cover (for wiring)
Flat Screw Driver 4 mm
Connect ground terminal
Flat Screw Driver 2.5 mm
Connect wires to the terminal blocks
For wiring, use color-coded conductors or suitable wire markings or labels. 12 to 20 AWG (0.5 mm² to 3.5
mm²) wires may be used for site wiring. The selection of wire gauge should be based on the number of
detectors used on the same line and the distance from the control unit, in compliance with specifications
2.4
Certification Instructions
Warning : Do not open the detector, even when isolated, when flammable atmosphere
present.
21
Use the following certification instructions:
•
The cable entry point may exceed 167°F (75°C). Suitable precautions should be taken when selecting
the cable.
•
The equipment may be used with flammable gases and vapors with apparatus groups IIA and IIB +
H2:
T5 in the ambient temperature range: – 67°F (–55°C) to +167°F (+75°C).
•
T4 in the ambient temperature range: – 67°F (–55°C) to +185°F (+85°C).
•
Installation shall be carried out by suitably trained personnel in accordance with the applicable code
of practice such as. EN 60079-14:1997.
•
Inspection and maintenance of this equipment shall be carried out by suitably trained personnel in
accordance with the applicable code of practice such as EN 60079-17.
•
Repair of this equipment shall be carried out by suitably trained personnel in accordance with the
applicable code of practice such as EN 60079-19.
•
The certification of this equipment relies upon the following materials used in its construction:
•
•
2.5
•
•
Enclosure: 316L Stainless Steel or Aluminum
•
Window: Sapphire Glass
If the equipment is likely to come into contact with aggressive substances, then it is the responsibility
of the user to take suitable precautions that prevent it from being adversely affected, thus ensuring that
the type of protection provided by the equipment is not compromised:
•
Aggressive substances: acidic liquids or gases that may attack metals, or solvents that may affect
polymeric materials.
•
Suitable precautions: regular checks as part of routine inspections or establishing from the
material’s data sheets that it is resistant to specific chemicals.
Special Conditions for safe use: The flame detectors should not be used as safety related devices in
accordance with directive 94/9/EC.
Installation Cables
Follow the following guideline for the cable installation:
2.5.1
•
All cables to the detector must be well shielded in order to comply with EMC requirement Ground the
detector to the nearest ground point (not more than 3m from the detector location).
•
Install the detector with the cable entries placed downwards.
Conduit Installation
The conduit used for the cabling must comply with the following:
•
To avoid water condensation water in the detector, install the detector with the conduits placed
downward, that include drain holes.
•
When using the optional tilt mount, use flexible conduits for the last portion connecting to the
detector.
•
For installations in atmospheres as defined in group B of the NFPA 72E, seal the conduits inlets.
•
When pulling the cables through the conduits, ensure that they are not tangled or stressed. Extend the
cables about 30 cm. (12 in.) beyond the detector location to accommodate wiring after installation.
•
After the conductor cables have been pulled through the conduits, perform a continuity test.
22
2.6
Installing the Tilt Mount (part no. 40/40-001)
The Tilt Mount enables the detector to be rotated up to 60º in all d irections.
Figure 4 shows the Detector mounted on the Tilt Mount.
Figure 4: Detector with Tilt Mount
23
2.6.1
Tilt Mount Specifications
Table 14: USA Version
Item
Qty
Type
Location
Tilt Mount
1
40/40-001
Screw
4
¼" 20 UNC x ¾"
Detector – Holding plate
Spring Washer
4
No. ¼"
Detector - Holding plate
Location
Table 15: European Version
2.6.2
Item
Qty
Type
Tilt Mount
1
40/40-001
Screw
4
M6 x 1 x 20 mm
Detector – Holding plate
Spring Washer
4
M6
Detector - Holding plate
Tilt Mount Assembly
Figure 5 shows the Tilt Mount Assembly.
Tilt Holding Plate
Tilt Mount
Horizontal
Locking Screw
Vertical Locking
Screw
Detector Holding
Plate
Figure 5: Tilt Mount Assembly
Figure 6 shows the Tilt Mount Assembly with dimension in both millimeters and inches.
Figure 6: Tilt Mount Assembly (dimensions in mm and inches)
24
Ø To install the Tilt Mount and Detector:
9
Place the tilt mount in its designated location and secure it with four (4) fasteners through four (4)
holes 7 mm in diameter. Use the 4 screws and spring washers according to the Kit Note: Removing
the detector for maintenance purpose does not require the Tilt Mount to be removed).
10 Unpack the detector.
11 Place the detector with its conduit/cable entries pointing downwards on the holding plate of the tilt
mount. Secure the detector with 5 /16 " 18 UNC x ¾" screw to the tilt mount.
12 Release the Horizontal and Vertical Locking Screws using 3 /16 " Hex Key such that the detector can be
rotated. Point the detector towards the protected area and make certain that the view of the area is
unobstructed. Secure the detector in that position by tightening the locking screws on the tilt mount.
(Make sure the detector is in the correct position.).
The detector is now correctly located, aligned and ready to be connected to the system.
2.7
Connecting the Detector
Ø To connect the detector to the electrical cables
13 Disconnect the power.
14 Remove the back cover of the detector by removing four (4) socket head-screws in the cover bolts.
The terminal chamber is now revealed.
15 Remove the protective plug mounted on the Detector Conduit/Cable entry; pull the wires through the
Detector Inlet.
16 Use a ¾" – 14 NPT explosion-proof conduit connection or M25x1.5 flameproof gland to assemble the
cable / conduit to the detector.
Terminal
Chamber
Terminals
Internal Earth
Terminal
Earth
Terminal
Detector Holding
Screw
Conduit / Cable
Inlet
Figure 7: Detector with Cover Removed
17 Connect the wires to the required terminals on the Terminal Board according to the wiring diagram
figure 7 and table 16
18 Connect the grounding (earth) wire to the ground (earth) screw outside the detector (Earth Terminal).
The detector must be well grounded to earth ground.
19 Verify the wiring. Improper wiring may damage the detector.
25
20 Check the wires for secure mechanical connection and press them neatly against the terminal to
prevent them from interfering while closing the back cover (figure 7)
21 Place and secure the detector’s back cover by screwing the four (4) socket-head-screws in the Cover
Bolts (figure 4).
2.7.1
Verifying the Detector Wiring
The detector has five output wiring options within the EExde integral terminal section of the enclosure.
There are 12 terminals labeled 1-12.
Table 16 describes the function of each terminal for all the wiring options.
Table 16: Model 40/40L, LB, L4, L4B Wiring Options
Wire
Terminal
No.
Option 1
Default
Option 2
Option 3
Option 4
Option 5
1
+24 VDC
+24 VDC
+24 VDC
+24 VDC
+24 VDC
2
0 VDC
0 VDC
0 VDC
0 VDC
0 VDC
3
Manual BIT
Manual BIT
Manual BIT
Manual BIT
Manual BIT
Fault Relay
N.C.
Fault Relay
N.C.
Fault Relay
N.O.
Fault Relay
N.C.
Fault Relay
N.O.
6
Alarm Relay
N.O.
Alarm Relay
N.O.
Alarm Relay
N.O.
Alarm Relay
N.O.
Alarm Relay
N.O.
7
Alarm Relay
C
Alarm Relay
C
Alarm Relay
C
Alarm Relay
C
Alarm Relay
C
8
0-20mA
In
Alarm Relay
N.C.
Alarm Relay
N.C.
Auxiliary
N.O.
Auxiliary
N.O.
9
0-20mA Out
0-20mA
Out
0-20mA Out
Auxiliary
C
Auxiliary C
10
RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
11
RS-485(1)
RS-485(1)
RS-485(1)
RS-485(1)
RS-485(1)
12
RS-485 GND
RS-485 GND
RS-485 GND
RS-485 GND
RS-485 GND
4
5
Notes:
•
RS-485 is used for communication network as specified in Appendix C (Terminals 10, 11, 12).
•
Alarm relay:
•
N.O. energized contact in wiring options 1, 4, 5.
•
N.O. and N.C. energized in options 2 and 3.
•
0-20mA is ‘Sink’ in option 1 and ‘Source’ in option 2 and 3.
•
In Wiring Option 1, link Terminals 1 and 8 to change the mA output to ‘Source’.
•
0-20mA includes HART protocol.
•
The Fault output is N.C. energized SPST relay. The contacts are closed when the Detector is in its
normal operational condition in options 1, 2 and 4, and available as N.O. energized in options 3 and 5.
•
The Auxiliary output is N.O. energized (SPST) relay. The Auxiliary Relay may act in parallel with the
ALARM relay to activate another external device or it may provide a warning signal, depending on
the function configuration.
26
2.8
Configuring your Detector
You can reprogram the function setup using the RS-485 connection or using the Hart Protocol as follows:
•
Spectrex Host Software: The Spectrex Host Software is for use on a PC or laptop. Refer to Manual
TM777050 for programming instructions. The Host software enables you to change the functions.
•
Handheld Unit: Refer to Manual 777060 for programming instructions when using the Handheld
Unit. The connection to the Handheld is fast and intrinsically safe. It enables you to change the
functions in situ with no need to remo ve the detector.
Note: Spectrex can provide a suitable cable (P/N 794079-5) with integral RS485/USB converter to
connect between the Detector and a PC/laptop.
•
Hart Protocol : Refer to Manual TM 777030 for programming instructions.
These functions enable you to set: sensitivity removed
•
Alarm Delay
•
Time Delay for Anti Flare mode
•
Address Setup
•
Mode of Operation
• Heated Optics Operation
The factory Default settings listed for each function are:
2.8.1
•
Alarm Delay – 3 Sec
•
Alarm Latch – No
•
Auxiliary Relay – No
•
Automatic BIT – Yes
•
Alarm BIT – No
•
Auxiliary BIT – No
•
EOL – No
•
Heated Optics – Auto
•
Temperature – 20
Alarm Delay (2.8.1 from 40/40I not applicable remove and renumber
2.8 paras)
The detector is equipped with an Alarm Delay option, which provides programmable time delays with
settings at:
•
Antiflare* (default)
*The Antiflare mode is selected to prevent false alarms in locations where fast flares may be present.
The Time Delay for fire alarms in this mode ranges from 2.5 to 15 seconds (usually, less than 10
seconds).
Other delays settings are available:
0, 3, 5, 10, 15, 20 or 30 seconds
When an Alarm (Detection) level condition occurs, the detector delays the execution of the Alarm outputs
by the specified period of time. The detector then evaluates the condition for 3 seconds. If the Alarm level
is still present, the Alarm outputs are activated. If this condition no longer exists, the detector returns to its
standby state.
The Alarm delay option affects the output relays and the 0-20mA. The LEDs and outputs indicate
warning levels during the delay time only if the fire condition exists.
2.8.2
Address Set-up
The detector provides up to 247 addresses that can be changed with RS485 communication link or HART
Protocol.
27
2.8.3
Function Set-up
You can select the desired functions as detailed in the following table.
Table 5: Functions
Function
Setting
Alarm Latch
•
Yes: Enable Alarm latching.
•
No: Disable Alarm latching (default).
•
Yes: Activate Auxiliary Relay at Warning level.
•
No: Activate Auxiliary Relay at Alarm level (default).
•
Yes: Perform Automatic & Manual Bit (default).
•
No: Perform Manual Bit only.
•
Yes: Successful Manual Bit activates the Alarm Relay for approximately 3
seconds (default).
•
No: Successful Manual Bit does not activate the Alarm Relay.
•
Yes: Successful Manual Bit activates the Auxiliary Relay for
approximately 3 seconds (default).
•
No: Successful Manual Bit does not activate the Auxiliary Relay.
•
Yes: Auxiliary Relay is used as End of Line.
•
No: Auxiliary Relay operates in accordance with Function 2 and 5
(default).
Auxiliary Relay**
Automatic BIT
Alarm BIT
Auxiliary BIT**
EOL**
Note: ** only available in Model 40/40L, LB, L4, L4B-4XXXX and 5XXXX
2.8.4
Heated Optics
The heated optics can be defined as one of the following modes:
•
Heated Mode
•
OFF: Not operated
•
On: Continuously
•
AUTO: Per temperature change
In AUTO mode, the default HEAT ON setting is 68°F (20°C). Heating stops when the temperature is 27°F
(15°C) above the start temperature.
You can define the start temperature below which the window will be heated. The temperature can be
defined between 32°F and 122°F (0°C to 50°C).
3
OPERATING THE DETECTOR
This chapter describes how to power up and test the detector. It also includes some very important safety
checks that you should make before operating the detector.
3.1
Powering Up
This section describes how to power up the detector. Follow these instructions carefully to obtain optimal
performance from the detector over its life cycle:
Ø To power up the detector:
22 Turn on the power.
23 Wait approximately 60 seconds for the detector to finish the start-up procedure.
Applying power initiates the following sequence of events:
•
The yellow LED flashes at 4 Hz.
• BIT is executed.
If successful, the green LED flashes at 1 Hz and the FAULT relay contacts close, mA output is 4mA.
28
24 Enter to Normal mode.
Note: The majority of detectors are used in the default non-latching alarm mode. Only perform a Reset
when the Latching alarm option has been programmed.
Ø To reset a detector when in it is in a LATCHED ALARM state:
•
3.2
Do one of the following:
•
Disconnect power (Terminal Number 1 or Terminal Number 2).
or
•
Initiate a Manual BIT.
Safety Precautions
After powering-up, the detector requires almost no attention in order to function properly, but the
following should be noted:
3.2.1
•
Follow the instructions in this guide and refer to the drawings and specifications.
•
Do not expose the detector to radiation of any kind unless required for testing purposes.
•
Do not open the detector housing, while power is applied.
•
Do not open the electronic compart ment. This part should be kept closed at all times and only opened
in the factory. Opening the electronic component side invalidates the warranty.
•
You should only access the wiring compartment to wire or remove the detector or access RS485
terminals for ma intenance.
•
Disconnect or disable external devices, such as automatic extinguishing systems before carrying out
any maintenance.
Default Functions Settings
Table 18 lists the default function configuration supplied with the detector.
Table 18: Default Function Values
Function
Value
Notes
Sensitivity
30
Alarm Delay
A
Alarm Latch
No
Auxiliary Relay
No
Automatic BIT
Yes
Alarm BIT
No
Auxiliary BIT
No
In wiring options 1, 2, 3 the Auxiliary Relay is not
available. This function is not used.
EOL
No
In wiring options 1, 2, 3 the Auxiliary Relay is not
available. This function is not used.
Heat Mode
Heat On
•
Antiflare
In wiring options 1, 2, 3 the Auxiliary Relay is not
available. This function is not used.
Auto
20
The detector starts heating the window for any
temperature below this value (in degrees Celsius).
In order to change the default function use:
•
P.C with Spectrex software, refer to Manual 777050 for instructions.
•
Handheld unit, refer to Manual 777060 for instructions.
•
USB cable with 485 converter (1meter) part number 794079-5.
•
HART Protocol, refer to Manual 777030 for instructions.
29
3.3
Testing Procedures
This section describes the proof testing procedure for proper operation of the detector. The detector can be
tested using the Manual Built -in-Test or the Spectrex UV/IR Fire Simulator - 20/20-311.
3.3.1
Automatic BIT Test
Check that the indicators show normal conditions.
3.3.2
Manual BIT Test
Important: If the function setup Alarm BIT and/or Auxiliary BIT are set to Yes (default No), the Alarm,
Auxiliary Relay and 0-20mA outputs are activated during a Manual BIT. Therefore, automatic
extinguishing systems or any external devices that may be activated during BIT must be disconnected.
Ø To perform a Manual BIT:
25 Verify that the detector is Normal Mode.
26 Initiate Manual BIT. The results of successful and unsuccessful manual BITs are detailed in table 11
and table 12
3.3.3
Testing with Fire Simulator Model 20/20-311
The Fire Simulator Model 20/20-311 can be used to simulate exposure of the detector to a real fire
condition. The detector is exposed to radiation at the required detection level. As a result, the detector will
generate a Fire Alarm signal.
Important: If the detector is exposed to a fire simulator, the Alarm and Accessory Relays and 420mA are activated during the simulation. Therefore, automatic extinguishing systems or any
external devices, which may be activated during this process, must be disconnected.
Ø To perform Fire Simulator Test:
27 Power up the system and wait up to 60 seconds for the detector to turn to a normal state. The Power
LED turns on.
28 Aim the Spectrex Fire Simulator Model 20/20-311 at the target point of the detector (Figure 14), in a
way that the radiation emitted by it is facing directly towards the detector.
29 Press the operation button once. After few seconds, a successful test shows the results shown in table
19
Table 19: Results of Successful Fire Simulator Test
Component
Action
Notes
4-20mA
Turn to 20mA
For a few seconds and then return to 4mA
Alarm Relay
Activated
for a few seconds and then returns to Normal
Auxiliary Relay
Activated
for a few seconds and then returns to Normal
Fault Relay
Remains active during
the test
LED
Red, steady
The detector is now ready for operation.
30
4
MAINTENANCE AND TROUBLESHOOTING
This chapter deals with preventive maintenance, describes possible faults in detector operation and
indicates corrective measures. Ignoring these instructions may cause problems with the detector and may
invalidate the warranty. Whenever a unit requires service, please contact Spectrex or its authorized
distributor for assistance.
4.1
Maintenance
This section describes the basic maintenance steps that should be taken to keep the detector in good
working condition and includes the following topics:
4.1.1
General Procedures
Maintenance should be performed by suitably qualified personnel, who are familiar with local codes and
practice. Maintenance requires ordinary tools.
4.1.1.1
Cleaning
The detector must be kept as clean as possible. Clean the viewing window and the reflector of the Flame
Detector periodically.
The frequency of cleaning operations depends upon the local environmental conditions and specific
applications. The fire detection system designer will give his recommendations.
Ø To clean the detector viewing window and reflector:
30 Disconnect power to the detector before proceeding with any maintenance including window/lens
cleaning.
31 Use water and detergent, and then rinse the viewing window with clean water.
32 Where dust, dirt or moisture accumulates on the window, first clean it with a soft optical cloth and
detergent, and then rinse with clean water.
4.1.2
Periodic Procedures
In addition to preventive cleaning and maintenance, the detector should be functionally tested every six
months or as dictated by local codes and regulations. These tests should also be carried out if the detector
has been opened for any reason.
4.1.2.1
Power-Up Procedure
Perform Power-Up procedure every time power is restored to the system.
4.1.2.2
Functional Test Procedure
Perform a functional test of the detector as described in paragraph 1.6.
4.1.3
Keeping Maintenance Records
It is recommended that maintenance operations performed on a detector are recorded in a Log-book. The
record should include the following:
•
Installation date, and contractor
•
Serial and tag no.
•
Entries for every maintenance operation performed, including the description of the operation, date
and personnel ID.
If a unit is sent to Spectrex or a distributor for service, a copy of the maintenance records should
accompany it.
31
4.2
Troubleshooting
This section is intended to be a guide to correct problems which may happen during normal operation.
Table 20: Troubleshooting Table
Problem
Cause
Corrective Action
LEDs Off
Fault Relay at N.O. 020mA at 0mA
No power at the unit
•
Check that the correct power is sent
to the detector.
•
•
Check power polarity.
Check wiring in the detector.
•
Send the detector for repairs.
•
Check the voltage at the detector;
verify at least 24V at the detector
terminal.
•
Send the detector for repairs.
Yellow LED flashes at
4 Hz
Fault Relay at N.O. 020mA at 0mA
Fault Detector
Yellow LED flashes at
4 Hz
Fault Relay at N.O. 020mA at 2mA
BIT Fault
•
Clean detector window.
Faulty Detector
•
Re-power the detector.
Replace the detector.
Red LED constantly on
If no fire exists, then,
Detector alarm latched
Perform Reset to the detector.
Alarm Relay at On 020mA at 20mA
Alarm condition
•
Check cause for alarm.
•
If no alarm, re-power the detector.
•
Send the detector back for repair.
•
•
Low Voltage
Faulty Detector
•
32
Appendices
33
A
Technical Specifications
A.1
Electrical Specifications
Operating Voltage
18-32 VDC
Power
Consumption
•
Without Heated Optic:
Max. 100mA in Standby
•
Max. 150mA in Alarm
With Heated Optic:
Max. 150mA in Standby
Max. 200mA in Alarm
Electric Input
Protection
The input circuit is protected against voltage-reversed polarity, voltage transients,
surges and spikes according to MIL-STD-1275B.
Electrical Interface
There are five output-wiring options. These options must be defined at the factory
per the customer order and cannot be changed at the customer facility.
See Appendice B for the wiring/terminal diagram for each option.
Unless otherwise specified, the default is Option 1. The wiring arrangement is
identified on the detector by the part number.
Electrical Outputs
•
Option 1 : Power, RS-485, 0-20mA (Sink), on HART protocol, Fault I Relay
(N.C.), Alarm Relay, (N.O.) (see figure 7)
•
Option 2 : Power, RS-485, 0-20mA (Source), Fault Relay (N.O), Alarm
Relay, (N.O.), (N.C.).
•
Option 3 : Power, RS-485, 0-20mA (Source) and HART Protocol, Fault
Relay (N.O.), Alarm Relay (N.O., N.C.).
•
Option 4 : Power, RS-485, Fault Relay (N.C.), Auxiliary Relay (N.O.),
Alarm Relay, (N.O.).
•
Option 5 : Power, RS-485, Fault Relay (N.O.), Auxiliary Relay (N.O.),
Alarm Relay, (N.O.).
•
Dry Contact Relays
Table 21: Contact Ratings
Relay Name
Type
Normal
Position
Maximum Ratings
Alarm
DPST
N.O., N.C.
2A at 30 VDC or 0.5A at 250
VAC
Auxiliary
SPST
N.O.
5A at 30 VDC or 250 VAC
Fault *
SPST
N.C. or N.O.
5A at 30 VDC or 250 VAC
Notes:
•
•
The Fault relay (in wiring options 1, 2, 4) is normally energized closed
during normal operation of the detector. The relay is de-energized open
if a fault condition or low voltage situation occurs.
•
* In wiring options 3, 5 the relay is normally energized open during
normal operation of the detector. The relay is de-energized close contact
if a fault condition or low voltage situation occurs.
0-20mA Current Output: The 0-20mA can be Sink or Source according to
the wiring option source (see appendice B). The maximum permitted load
resistance is 600O.
34
Table 22: 16 mA Current Output
•
State
Output
Fault
0 + 0.5mA
BIT Fault
2mA±10%
Normal
4mA±10%
IR Detection
8mA±10%
UV Detection
12mA±10%
Warning
16mA±5%
Alarm
20mA±5%
HART Protocol
The HART is a digital communication signal at a low level on top of the 020mA. This is a bi-directional field communication protocol used to
communicate between intelligent field instruments and the host system.
Through HART protocol the detector can:
•
Display set-up
•
Reconfigure the set-up
•
•
•
•
Display detector status and definition
Perform detector diagnostics
Troubleshoot
For more details refer to HART Manual 777030.
Communication Network : The detector is equipped with an RS-485
communication link that can be used in installations with computerized
controllers.
The communications protocol is Modbus compatible.
•
This protocol is a standard and widely used.
•
Headed Optics
It enables continuous communication between a standard Modbus
controller (Master device) and a serial Network of up to 247 detectors.
The front window can be heated to improve performance in icing, condensation
and snow conditions. The heater increases the temperature of the optical surface
by
5 - 8°F (3 - 5°C) above the ambient temperature. The heated optics can be
configured in three ways:
•
•
•
Off: The optics are not heated
On: The optics are heated continuously
Auto: Operated only when the change of temperature requires the heating.
(default)
In Auto mode the start heating temperature can be defined between 32°F - 122°F
(0°C - 50°C). The detector stops heating the window when the temperature is
27°F (15°C) above the start temperature.
35
A.2
Mechanical Specifications
Enclosure
Stainless Steel 316
or
Aluminum, heavy duty copper free (less than 1%), red epoxy enamel finish
Hazardous Area
Approvals
Water and Dust Tight
•
FM, CSA
•
Class I Div. 1 Groups B, C and D;
Class II/III Div. 1 Groups E, F and G.
ATEX, IECEx ;EX II 2 GD, EExde IIB + H2 T5 (75°C), T4 (85°C)
•
NEMA 250 type 6p.
•
IP 66 and IP 67 per EN 60529
Electronic Modules
Conformal coated
Electrical Connection
•
2 x ¾" - 14NPT conduit
•
or
2 x M25 (ISO)
(two entries)
A.3
Dimensions
5" x 4.5" x 6.4" (127 x 117 x 156 mm)
A.4
Weight
Stainless Steel: 5.5 lb (2.5 Kg)
Aluminium: 2.5 lb (1.2 kg)
A.5
Environmental Specifications
The SharpEye 40/40L, LB, L4, L4B is designed to withstand harsh environmental conditions.
High Temperature
•
Designed to meet MIL-STD-810C, method 501.1 procedure II
•
Low Temperature
Humidity
Salt Fog
Dust
Vibration
•
Operating temperature: +167°F (+75 °C)
Storage temperature: +185 °F (+85 °C)
•
Designed to meet MIL-STD-810C, method 502.1, procedure I
•
•
Operating temperature: -57°F (-50°C)
Storage temperature: -65°F (-55°C)
•
Designed to meet MIL-STD-810C, method 507.1, procedure IV
•
Relative humidity of up to 95% for the operational temperature range
•
Designed to meet MIL-STD-810C, method 509.1, procedure I
•
Exposure to a 5% Salt Solution Fog for 48 hours
•
Designed to meet MIL-STD-810C, method 510.1, procedure I
•
Exposure to a dust concentration of 0.3 frames/cubic ft. at a velocity
of 1750 fpm, for 12 hours
•
Designed to meet MIL-STD-810C, method 514.2, procedure VIII
•
Vibration at an acceleration of 1.1g within the frequency range of 530 Hz, and an acceleration of 3g within the frequency range of 30500 Hz
36
Mechanical Shock
Electromagnetic
Compatibility (EMC)
•
Designed to meet MIL-STD-810C, method 516.2, procedure I
•
Mechanical Shock of 30g half-sine wave, for 11 msec
This product is in conformance with EMC directive 89/336/EC:
•
•
•
•
Conducted Disturbances: IEC/EN61000-4-6
ESD: IEC/EN61000-4-2
Burst: IEC/EN61000-4-4
•
Surge: IEC/EN61000-4-5
Immunity to main supply voltage variations: MIL-STD-1275B
Radiated Immunity – IEC/EN61000-4-3
•
Conducted Immunity – IEC/EN61000-4-6
•
B
Wiring Instructions
B.1
General Instructions for Electrical Wiring
Follow the instructions detailed in this section for determining the correct wire gauge to be used for the
installation.
33 Use table 23 to determine the required wire gauge /size for general wiring, such as relay wiring.
Calculate the permitted voltage drop with respect to load current, wire gauge and length of wires.
Table 23: Maximum DC resistance at 68°F (20°C) for copper wire
AWG #
mm2
Ohm per 100 ft
Ohm per 100 m
26
0.12 - 0.15
4.32
14.15
24
0.16 - 0.24
3.42
11.22
22
0.30 - 0.38
1.71
5.60
20
0.51 - 0.61
1.07
3.50
18
0.81 - 0.96
0.67
2.20
16
1.22 - 1.43
0.43
1.40
14
1.94 - 2.28
0.27
0.88
12
3.09 - 3.40
0.17
0.55
10
4.56 - 6.64
0.11
0.35
34 Use table 24 to select wire gauge for power supply wires. DO NOT connect any circuit or load to
detectors’ supply inputs.
•
Select Number of detectors connected in one circuit.
•
Select wiring Length per your installation requirements.
•
Refer to Power Supply Range for voltage extreme applied.
37
Table 24: Wiring length in feet (meter)
Number of
Detectors
Power
Supply
Range
(VDC)
Recommended Wire Diameter (AWG)
24
18
16
14
-
-
22-32
20
18
16
14
-
-
22-32
16
20
18
16
14
-
22-32
12
20
18
16
14
-
20-32
8
20
18
16
14
-
20-32
4 and less
20
18
16
16
14
20-32
Ft (m)
164
(50)
328 (100)
492 (150)
656 (200)
820 (240)
Max. Length from Power Supply to Last Detector
B.2
Typical Wiring Configurations
This section describes examples of typical wiring configurations.
Figure 8: Wiring Terminals
38
Table 25: Wiring Connections
Wiring
Option
Detector Model
Terminals
5
8
9
1
40/40L, LB, L4, L4B1XXXX
Fault Relay N.C.
0-20mA (Sink)
0-20mA (Sink)
2
40/40L, LB, L4, L4B2XXXX
Fault Relay N.C.
Alarm Relay
N.C.
0-20mA
(Source)
3
40/40L, LB, L4, L4B3XXXX
Fault Relay
N.O.
Alarm Relay
N.C.
0-20mA
(Source)
4
40/40L, LB, L4, L4B4XXXX
Fault Relay N.C.
Auxiliary Relay
N.O.
Auxiliary Relay
N.O.
5
40/40L, LB, L4, L4B5XXXX
Fault Relay
N.O.
Auxiliary Relay
N.O.
Auxiliary Relay
N.O.
Figure 9: Typical Wiring For 4 Wire Controllers (Using Option 1 or 2 Wiring)
Figure 10: 0-20mA Wiring (Sink) 4-Wire Connection
39
For source version of this unit, link Terminals 1 and 8
Figure 11: 0-20mA Wiring (Source) 3-Wire Connection
Notes: The detectors are supplied as:
•
Isolated 0-20mA – Sink in wiring option 1.
•
As non-isolated 0-20mA – Source in wiring options 2 and 3.
•
There are no 0-20mA outputs in wiring options 4 and 5.
C
RS-485 Communication Network
C.1
RS-485 Overview
By using the RS-485 network capability of the UV/IR detector and additional software, it is possible to
connect up to 32 detectors in an addressable system with four (4) wires only (2 for power and 2 for
communication). Using repeaters, the number of detectors can be much larger (32 detectors for each
repeater) up to 247 on the same four (4) wires. When using the RS-485 network, it is possible to read each
detector status (FAULT, WARNING, and ALARM) and to initiate a BIT to each detector individually.
For more details, consult Spectrex.
Figure 12: RS-485 Networking
40
D
Accessories
This appendix describes the accessories that can help you maximize fire detection with the SharpEye
UV/IR flame detector:
D.1
Long Range UV/IR Fire Simulator (Ref B103106)
The SharpEye UV/IR Long Range Fire Simulator 20/20-311 is designed specifically for use with
SharpEye UV/IR flame detectors. The Fire Simulator emits IR radiation in a unique sequential pattern
corresponding to and recognizable by the UV/IR detector as fire. This allows the UV/IR detectors to be
tested under simulated fire conditions without the associated risks of an open flame.
There is an optional beam collimator, model no. 20/20-190, specially designed for extended test range.
Figure 13: SharpEye UV/IR Long Range Fire Simulator 20/20-311
D.1.1
Unpacking
Verify that you have received the following contents:
D.1.2
•
Delivery form
•
Fire Simulator with integral batteries
•
Battery charger
•
Optional Beam Collimator
•
Storage case
Operating Instructions
Warning : Do not open the Fire Simulator to charge the batteries or for any other reason in a hazardous
area.
Caution: The following test simulates a real fire condition and may activate the extinguishing system or
other alarms. If this is not desired, disconnect/inhibit them before the test and reconnect after the
simulation.
Ø To simulate a fire:
1
Aim the Fire Simulator towards the detector’s Target Point.
41
Target Point
Figure 14: 40/40L, LB, L4, L4B UV/IR Detector Target Point
2
3
4
5
D.1.3
When testing keep a distance of at least 50 cm (20 inches) from the detector.
Press the operation button once. Fire simulation lasts for 20 seconds. The detector sends an alarm
signal (solid red LED).
Wait 20 seconds before repeating the test.
Verify that the optical window is clean.
Range
Table 26: Sensitivity Ranges
Detector Model
Standard Test
Range(ft/m)
Extended Test
Range with
collimator
(ft/m)
40/40L
14.5/4.5
29/9
40/40LB
14.5/4.5
29/9
40/40L4
7/2
14.5/4.5
40/40 L4B
7/2
14.5/4.5
Notes:
•
The minimum distance from the detector is 20 inches (50 cm).
•
The optional beam collimator is fitted for Extended Range.
At extreme temperatures, there is a 15% maximum reduction in the range.
Important: Keep the Fire Simulator in a safe place when not in use.
D.1.4
Charging the Battery
The Fire Simulator uses NiCd batteries as a rechargeable power source. When the batteries are fully
charged, the simulator operates for at least 60 times without recharging. An internal buzzer is sounded
when the voltage from the batteries is lower than the required operational level.
Ø To charge the battery:
1
2
3
4
5
6
Place the Fire Simulator on a table in a safe area.
Turn the sealed plug (next to the operation button) counter-clockwise with a suitable wrench.
Connect the battery charger.
Charge for a maximum of 14 hours.
Disconnect the charger.
Tighten the sealed plug clockwise.
42
D.1.5
Technical Specifications
Mechanical
•
Explosion Proof Enclosure:
•
NFPA (designed to meet)
•
•
Class I, Division 1 & 2 Groups B, C and D
Class II, Division 1 & 2 Groups E, F and G
ATEX EX II2G NEMKO 02ATEX255
•
EExd IIB T5 50°C per En 50-014 & EN50-018
•
Power: 8 VDC Max.
•
•
6 x Rechargeable 1.2 VDC NiCd Batteries
Current: 2.5A Avg.
•
Charge: 400mA for 14 Hours
•
Temperature Range:-4 to +122ºF (-20 to +50ºC)
•
Vibration Protection: 1g (10-50hz)
Water and Dust: IP 67 per EN 60529
•
Electrical
Environment
•
Physical
D.2
•
Dimensions: 11.5 x 10.1 x 3.9 in
(292 x 258 x 100 mm)
•
Weight; 7.5 lb. (3.4 Kg)
Tilt Mount – Ref. B103988
The Tilt mount provides accurate directional selection for optimum area coverage.
Figure 15: Tilt Mount
43
D.3
Weather Protection – Ref B103908
The weather protector protects the detector from different weather conditions, such as snow and rain.
Figure 16: Weather Protection
D.4
Laser Detection Coverage Pointer – P/N 777166
The Laser Detection Coverage Pointer evaluates detector coverage on-site. The device is an add-on
accessory that enables designers and installers to optimize detector location and assess the actual coverage
of installed detectors.
The device is universal and can be used with all 40/40 SharpEye Optical Flame Detectors.
Figure 17: Laser Detection Coverage Pointer
44
D.5
Air Shield – P/N 777161
The Air Shield enables you to install the detector in dirty areas and using compressed air, keep the window
clean. This prevents the accumulation of dirt on the window and enables the detector to continue to
operate under harsh conditions.
Figure 18: Air Shield
E
SIL-2 Features
E.1
40/40LB, L4B Flame Detector
This appendix details the special conditions to comply with the requirements of EN 61508 for SIL 2.
The 40/40LB,L4B Flame Detector can only be used in low or high demand mode applications, see
IEC 61508.4, Chapter 3.5.12
E.1.1
Safety Relevant Parameters
Functional check of the detector every 30 days.
E.1.2
•
HFT: 0
•
PFD: 1.9 x 10 -4 (˜ 2% of SIL-2) if only Alarm Relay is used for alerting.
•
PFD: 1.9 x 10 -4 (˜ 2% of SIL-2) if 4-20mA – interface is used as alarm.
•
SFF: 97% fulfils the conditions of EN 61508 for SIL2
Guidelines for Configuring, Installing, Operating and Service
The alert conditions according to SIL 2 can be implemented by an:
E.1.2.1
•
Alert signal via 20mA current loop
or
•
Alert signal via alarm relay and the fault relay
Conditions for Safe Operating
1
The flame detector shall consist only of the approved hardware and software modules.
2
The 24V power supply must fulfill the requirements for PELV / SELV of EN 60950.
The automatic BIT (Built-In-Test) must be activated.
The set-up parameters must be verified and the function of the 40/40 Flame Detector (flame detection,
function of the 4-20mA interface, relay functions) must be checked completely.
3
4
45
E.1.2.2
Using the 4-20mA Interface for Alerting
1
2
3
E.1.2.3
AUTOMATIC BIT test = on
•
Connected to 4-20mA Terminals
The following allowed output current must be supervised with an accuracy of ± 5%:
•
Normal State = 4mA
•
Warning State = 16mA
• Alarm State = 20mA
The output current must be supervised regarding the over-and under run of the 4-20mA.
Using the Alarm Relay Contact for Alerting
1
2
3
4
5
E.1.2.4
The following parameters shall be set:
•
The following parameters shall be set:
•
AUTOMATIC BIT Test = on
•
Connected to N.C. contact of Alarm Relay Terminals
• Connected to Fault Relay Terminals
The relay contacts (“alarm” – and “faulty relay”) must be protected with a fuse rated at 0.6 of the
nominal specified relay contact current.
The maximum contact rating that is allowed per SIL-2 is 30VDC.
It is to be considered that the contact of the Alarm Relay opens if there is a fire alarm.
During the forwarding and evaluation of the alarm it must be noted that the relay contact opens.
Other
1
2
The complete function of the flame detector (flame detection, function of the 4-0mA interface, the
relays) must be examined at least every 30 days, when the flame detector must be switched OFF and
ON.
The window of the sensor must be examined at appropriate time intervals for partial contamination.
3
The HART and the RS 485 interfaces must not be used for the transmission of the safety-related data.
46
48
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