VESDA VLC-EX
Product Guide
VLC-500-EX
VLC-505-EX
September 2014
Document: 20755_01
Part Number: 29881
VESDA by Xtralis
VESDA VLC-EX Product Guide
Intellectual Property and Copyright
This document includes registered and unregistered trademarks. All trademarks displayed are the trademarks of
their respective owners. Your use of this document does not constitute or create a licence or any other right to use
the name and/or trademark and/or label.
This document is subject to copyright owned by Xtralis AG (“Xtralis”). You agree not to copy, communicate to the
public, adapt, distribute, transfer, sell, modify or publish any contents of this document without the express prior
written consent of Xtralis.
Disclaimer
The contents of this document is provided on an “as is” basis. No representation or warranty (either expressed or
implied) is made as to the completeness, accuracy or reliability of the contents of this document. The manufacturer
reserves the right to change designs or specifications without obligation and without further notice. Except as
otherwise provided, all warranties, expressed or implied, including without limitation any implied warranties of
merchantability and fitness for a particular purpose are expressly excluded.
General Warning
This product must only be installed, configured and used strictly in accordance with the General Terms and
Conditions, User Manual and product documents available from Xtralis. All proper health and safety precautions
must be taken during the installation, commissioning and maintenance of the product. The system should not be
connected to a power source until all the components have been installed. Proper safety precautions must be taken
during tests and maintenance of the products when these are still connected to the power source. Failure to do so
or tampering with the electronics inside the products can result in an electric shock causing injury or death and may
cause equipment damage. Xtralis is not responsible and cannot be held accountable for any liability that may arise
due to improper use of the equipment and/or failure to take proper precautions. Only persons trained through an
Xtralis accredited training course can install, test and maintain the system.
Liability
You agree to install, configure and use the products strictly in accordance with the User Manual and product
documents available from Xtralis.
Xtralis is not liable to you or any other person for incidental, indirect, or consequential loss, expense or damages of
any kind including without limitation, loss of business, loss of profits or loss of data arising out of your use of the
products. Without limiting this general disclaimer the following specific warnings and disclaimers also apply:
Fitness for Purpose
You agree that you have been provided with a reasonable opportunity to appraise the products and have made
your own independent assessment of the fitness or suitability of the products for your purpose. You acknowledge
that you have not relied on any oral or written information, representation or advice given by or on behalf of Xtralis
or its representatives.
Total Liability
To the fullest extent permitted by law that any limitation or exclusion cannot apply, the total liability of Xtralis in
relation to the products is limited to:
i. in the case of services, the cost of having the services supplied again; or
ii. in the case of goods, the lowest cost of replacing the goods, acquiring equivalent goods or having the goods
repaired.
Indemnification
You agree to fully indemnify and hold Xtralis harmless for any claim, cost, demand or damage (including legal costs
on a full indemnity basis) incurred or which may be incurred arising from your use of the products.
Miscellaneous
If any provision outlined above is found to be invalid or unenforceable by a court of law, such invalidity or
unenforceability will not affect the remainder which will continue in full force and effect. All rights not expressly
granted are reserved.
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VESDA VLC-EX Product Guide
VESDA by Xtralis
Scope
The VESDA VLC-EX Product Guide is written to provide you with comprehensive knowledge of the detector.
This guide introduces you to the VESDA VLC-EX detector features and technical specifications and gives an
understanding of its components and their function. You will also find instructions on installing, cabling and
powering up the detector.
This guide is for anyone involved with the design, maintenance and purchasing of a VESDA system. It is
assumed that anyone using this guide has knowledge and the appropriate certification from the local fire and
electrical authorities and is fully conversant with the regulations pertaining to the use of such products in
hazardous atmospheres.
Document Conventions
The following typographic conventions are used in this document:
Convention Description
Bold
Used to denote: emphasis.
Used for names of menus, menu options, toolbar buttons
Italics
Used to denote: references to other parts of this document or other
documents. Used for the result of an action.
The following icons are used in this document:
Convention Description
Caution: This icon is used to indicate that there is a danger to
equipment. The danger could be loss of data, physical damage, or
permanent corruption of configuration details.
Warning: This icon is used to indicate that there is a danger of electric
shock. This may lead to death or permanent injury.
Warning: This icon is used to indicate that there is a danger of inhaling
dangerous substances. This may lead to death or permanent injury.
Contact Us
UK and Europe
+44 1442 242 330
D-A-CH
+49 431 23284 1
The Americas
+1 781 740 2223
Middle East
+962 6 588 5622
Asia
+86 21 5240 0077
Australia and New Zealand
+61 3 9936 7000
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VESDA by Xtralis
VESDA VLC-EX Product Guide
Codes and Standards Information for Air Sampling Smoke Detection
We strongly recommend that this document is read in conjunction with the appropriate local codes and standards
for smoke detection and electrical connections. This document contains generic product information and some
sections may not comply with all local codes and standards. In these cases, nothing can take precedence over the
correct measures to prevent an explosion (ATEX / IECEx - EN 60079): This is mandatory. The information below
was correct at time of printing but may now be out of date, check with your local codes, standards and listings for the
current restrictions.
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, the user is encouraged to try to correct the interference by one
or more of the following measures; re-orientate or relocate the receiving antenna, increase the separation between
the equipment and receiver, connect the equipment to a power outlet which is on a different power circuit to the
receiver or consult the dealer or an experienced radio/television technician for help.
FDA
This Xtralis product incorporates a laser device and is classified as a Class 1 laser product that complies with FDA
regulations 21 CFR 1040.10. The laser is housed in a sealed detector chamber and contains no serviceable parts.
The laser emits invisible light and can be hazardous if viewed with the naked eye. Under no circumstances should
the detector chamber be opened.
Explosion Protection Information
Since the VLC-EX is designed to be applied in an environment where there is potentially a hazardous atmosphere,
it is important that all users are aware of and follow the guidance given in the appropriate standards, including in:
EN 60079-14:2008, “Explosive atmospheres. Electrical installations design, selection and erection”, EN 6007917:2007, “Explosive atmospheres. Electrical installations inspection and maintenance” and EN 60079-19: 2011,
“Explosive atmospheres. Equipment repair, overhaul and reclamation” and that they also adhere to the specific
rules and regulations for the site where the product is deployed.
TheVESDA VLC-EX is certified to :-
ATEX II 3G
EN 60079-0:2009 and EN 60079-15:2010
Ex ic nA nC IIB T5 Gc IP54
-10°C ≤ Ta ≤ +55°C
Certificate No.: ITS 14 ATEX 48089X
QAN: ITS 11 ATEX Q7454
IECEx II 3G
IEC 60079-15 Ed4.0
Ex ic nA nC IIB T5 Gc IP54
-10°C ≤ Ta ≤ +55°C
Certificate No.: IECEx ITS 14.0050X
QAR: GB/ITS/QAR11.0016/00
The VLC-EX is intended for hazardous area where there is little or no dust i.e. one with no process or activity that
could lead to excessive or unfavourable dust passing thought the detector in sufficient quantity to generate
excessive electrostatic charge in the aspirator. In all installations it is recommended that an inline filter (part number
VSP-850-M) is fitting in the pipework upstream of the detector.
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VESDA VLC-EX Product Guide
VESDA by Xtralis
Regional regulatory requirements and notices
EN54-20
The base VLC detector, as used in the VLC-EX has been tested and approved to EN 54-20.
The product must use a power supply conforming to EN 54-4.
The product is compliant with EN 54-20 sensitivity requirements provided the following conditions are met:
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For a Class A detector, hole sensitivity must be better than 1.5% obscuration/m and transport time less than 60
seconds
For a Class B detector, hole sensitivity must be better than 4.5% obscuration/m and transport time less than 90
seconds
For a Class C detector, hole sensitivity must be better than 10% obscuration/m and transport time less than
120 seconds
These limits should be verified using ASPIRE2 during the design of the sampling pipe network.
The product is compliant with EN 54-20 flow monitoring requirements provided the following conditions are met:
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The minor low and minor high flow thresholds should be set at 85% and 115% respectively
The flow through the detector predicted by ASPIRE2 should be in the range 20 to 65 lpm
Additional information:
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Class A detectors passed EN 54-20 approvals testing with 30 holes and 0.05% obscuration/m detector
sensitivity
Class B detectors passed EN 54-20 approvals testing with 36 holes and 0.09% obscuration/m detector
sensitivity
Class C detectors passed EN 54-20 approvals testing with 40 holes and 0.165% obscuration/m detector
sensitivity
Approvals
The VLC-EX contains a standard VLC-EX detector inside an IP rated enclosure so as to meet the particular
requirements of Exn. Refer to the VLC data sheet (Doc no: 09362) for a list of approvals relevant to the standard
VLC. While the performance requirements of the VLC-EX have been verified by Xtralis to be equivalent or better
than the standard VLC, the VLC-EX is not formally listed as a product variant by these agencies.
The base VLC detector, as used in the VLC-EX, has been tested and approved by the following:
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UL
ULC
FM
LPCB
VdS
CCC
ActivFire
NF (Système de Sécurité Incendie – www.marque-nf.com)
VNIIPO
CE
EN 54-20
Regional approvals listings and regulatory compliance vary between VESDA product models. Refer to
www.xtralis.com for the latest product approvals matrix.
Document: 20755_01
Part Number: 29881
iv
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VESDA by Xtralis
VESDA VLC-EX Product Guide
Table of Contents
1
2
3
Introduction
1
1.1
1.2
1
2
Operation
3
2.1
2.2
2.3
4
7
8
5
6
7
8
9
Display
LCD Programmer
Product Configuration
Product Information
3.1
3.2
3.3
3.4
3.5
3.6
4
Configurations
Features
Specifications
Product Dimensions
Enclosure Materials
Default Settings
Relay settings and conditions to change states
Auxiliary / GPI Terminals
9
9
10
10
11
12
12
Mounting the Detector
13
4.1
4.2
13
14
Securing the Internal Mounting Bracket
Installing the Detector
Connecting the VESDA VLC-EX to the Sampling Pipe Network
17
5.1
5.2
17
17
Inlet Pipes
Air Exhaust Pipe
Wiring Connections
19
6.1
19
Termination Card
Power Source
25
Battery Backup
27
8.1
27
Backup battery size calculation sheet
Starting Up
29
9.1
30
Installation Checklist
10 Preliminary Systems Check
31
11 Maintaining and Servicing the Detector
33
11.1
11.2
11.3
Opening and Closing the Detector
Replacing the Aspirator
Internal Wiring
34
35
35
12 Spare Parts
37
Index
39
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1
VESDA VLC-EX Product Guide
Introduction
The VESDA VLC-EX is an aspirating smoke detector providing very early warning of fire conditions by
drawing air samples through an air sampling pipe network. The detector chamber can detect the presence of
smoke at very low concentrations. The embedded and PC software complimenting the VESDA VLC-EX
provides a wide range of user defined parameters and reporting capabilities. The detector easily interfaces
with fire warning and fire suppression release systems, and can be easily integrated into a building
management or digital control system.
1.1
Configurations
The VESDA VLC-EX is available as:
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Relays Only (RO) model (VLC-500-EX) - for stand alone VESDA VLC-EX
VESDAnet (VN) model (VLC-505-EX) - for networked VESDA VLC-EX
Figure 1-1: VESDA VLC-EX detector
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VESDA VLC-EX Product Guide
1.2
VESDA by Xtralis
Features
The VESDA VLC-EX features make it an ideal smoke detector for protecting small environments and
individual objects in locations containing hazardous atmospheres:
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Wide sensitivity range
Each detector can cover an area of up to 800 m² (8000 sq. ft.)
Up to three programmable alarm thresholds
Programmable relays
AutoLearn feature
One pipe inlet that can be split into multiple pipes
Clean air barrier for optics protection
Option for inverted mounting
High efficiency aspirator
Airflow monitoring
Optional remote display and relay capability
Active fault monitoring
Easy cable termination
Event log to 12000 events
RO Version: Relay Only version for stand alone VESDA VLC-EX
VN Version: VESDAnet (VN) version for networked VESDA VLC-EX
Remote modules available (VN version only) to meet site specific requirements
General purpose input with three programmable functions
PC capable programming and monitoring
Fully supported by the ASPIRE2 pipe modelling software. Model the VLC-EX as a standard VLC
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VESDA VLC-EX Product Guide
Operation
An air sampling pipe network collects air samples from a protected area. The integrated aspirator draws air
into the sampling pipes through a pipe inlet manifold. For further information on air sampling pipe networks
please see the Pipe Network Design and Installation Manuals.
Some of this air flows to the dual stage filter. The first stage air filter removes dust and dirt from the sampled
air after which the sample flows to the laser detector chamber which is designed to detect the presence of
smoke.
Any smoke detected in the laser detection chamber is signaled to the main processor card. If the presence of
detected smoke is higher than the set thresholds it is reported as a Pre-Alarm or an Alarm depending upon the
alarm thresholds. The second stage filter further filters the air to produce ultra clean air. The ultra clean air is
used to clean the optical surfaces in the laser detection chamber.
Figure 2-1: Operation and internal air flow of the VESDA VLC-EX Detector
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VESDA VLC-EX Product Guide
2.1
VESDA by Xtralis
Display
The VESDA VLC-EX has five LEDs to indicate Alarms, Faults, OK (normal working of the detector) and
Reset/Isolate status. The VLC-505-EX offers the option for a remotely mounted Display Module. Refer to
Figure 2-2 on page 5 for details.
2.1.1
LED and Reset/Isolate button
The LED indicators and the Reset/Isolate button on the front cover of the VESDA VLC-EX detector display
alarms and faults.
Table 2-1: LED Indicators and the Reset/Isolate button
Fire
This (RED) LED is lit when the Fire alarm threshold is
reached.
Pre-Alarm
The (RED) Pre-Alarm LED is lit when the Pre-Alarm
threshold is reached.
This LED flashes when the Alert alarm threshold is reached
and Alert Overlay in set to ON.
Fault
This (YELLOW) LED is lit when a fault is detected.
It is also lit during airflow normalization.
OK
The OK LED (Green) stays lit during normal operation
indicating the unit is functioning normally.
This LED flashes twice repeatedly during air flow
normalization operation and three times repeatedly when
AutoLearn is activated.
Reset / Isolate
The Reset/Isolate LED (Yellow) is lit when VESDA VLC-EX
is isolated. While it remains isolated the Pre-Alarm and Fire
relays will not work.
(The Fault relay will continue to work).
Reset / Isolate Push
Button Switch
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To Reset the unit, press this button once.
To Isolate the unit, press and hold the button for 2
seconds.
To de-isolate the unit, press and hold the button for 2
seconds.
While the detector is Isolated, any faults may be
cleared by pressing this button once.
The button will not operate:
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if a remote Reset switch has been fitted to the Reset
(GPI) terminals and is set to the Isolate position; OR
if the Reset/Isolate button has been locked out during
programming.
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2.1.2
VESDA VLC-EX Product Guide
Remote Display Module
The VLC-505-EX model has the option of being connected to a Remote Display Module mounted into a
Mounting Unit or a 19" Subrack, located in the safe area.
Caution:
Remote modules are not Ex rated and must be located in a non-hazardous area.
Legend
A
Threshold indicators
B
Bar graph
C
Numerical Display
D
Alarm Level LEDs
E
Fault LEDs
F
Push Button Keys
Figure 2-2: VRT-J00 Display Module mounted into a remote unit
Table 2-2: Remote Display Module
OK LED
The OK LED stays lit during normal operation indicating the unit is
functioning normally. When this LED is off a warning beep will sound
indicating a Fault condition is active.
Isolate LED
This LED is lit when the detector is Isolated and the alarm relays are deactivated disabling the alarm outputs of the detector. A warning sounder will
beep every 60 seconds if the display has been programmed to act in this
way.
Alarm Levels
ALERT: When illuminated this LED indicates that the smoke level is above
the alert threshold. This indicates the detector has identified the very early
stages of a fire condition and/or that the smoke level in the area is above
normal.
PRE-ALARM: When lit this indicates that the detected smoke level has
passed the threshold value fixed for Pre-Alarm, but is not intended to initiate
a general fire alarm response procedure.
FIRE: When lit this indicates that there is enough smoke to initiate a general
fire alarm response procedure. This indicates a fire may be imminent or is in
progress. When interfaced with a Fire Alarm Control Panel (FACP) it can
generate an automatic fire alarm.
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Table 2-2: Remote Display Module (continued...)
Bar graph
The Bar graph is a 20 step indicator where each indicator represents an
increase in the detected level of smoke, relative to the preset fire alarm
level.
Threshold Indicators
The illuminated LEDs represent visual indication of the settings for the
ALERT, PRE-ALARM, and FIRE alarm levels.
Fault LEDs
Urgent: Indicates a serious fault requiring immediate attention.
System: Indicates a fault in the network.
Zone: Indicates a fault in the VESDA Zone monitored by the Display
Module.
Power: Indicates a fault in the power supply (If the GPI function is used).
Network: Indicates a communications fault on VESDAnet.
Airflow: Indicates abnormal air flow through the inlet pipe.
Filter: This LED illuminates when the air filter requires changing.
Push Button Keys
These buttons enable various systems functions but can not be used to
configure the system. The buttons can be disabled by the Systems
Administrator.
Mode/Test (Dual Function): Selects or toggles between the sensitivity,
smoke level and zone number modes. When depressed for more than two
seconds it performs a lamp test function.
Silence: This button silences any alarm or fault warnings. It also stops the
LEDs from flashing to acknowledge a fault or alarm condition.
Reset: Resets any latched alarms and faults on the detector. Any active
alarms or faults are reported again after the time delays have elapsed.
Isolate: Isolates the detector from any external devices or systems (an
isolate indication will normally be raised at the Fire Alarm Control Panel
(FACP)).
Note:
Numerical Display
It is normal practise to signal the Isolate condition to the Fire
Alarm Control Panel (FACP) using the Isolate relay.
Sensitivity: Shows the level of smoke that must be measured to illuminate
the entire bar graph and always corresponds with the fire alarm level.
Smoke Level: Indicates the current level of smoke in the relevant VESDA
address and is represented as % obs/m or % obs/ft.
Zone Number: This is the VESDA Zone number assigned to the Display
Module.
Note:
6
The Mode Button is used to select the parameters represented by
the Numeric Display (sensitivity, smoke level, zone number). The
values displayed in the numerical display represent the current
readings for that mode.
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2.2
VESDA VLC-EX Product Guide
LCD Programmer
The LCD Programmer allows configuring, commissioning and maintenance of a VESDA system. For further
information please see the LCD Programmer Product Guide. A hand-held programmer can be connected to
the VESDA VLC-EX VN Model (VLC-505-EX). The VESDAnet socket and VESDAnet terminals can be found
on the termination card and can be accessed by removing the front cover of the detector. A LCD Programmer
mounted into a remote unit or a 19" Sub-Rack may also be used (for VLC-500-EX model refer to Section 6.1.3
on page 22).
Caution:
Before undertaking any work on a VLC-EX detector which would involve opening the outer
stainless steel case, the area in which it is installed must be made safe. For example, the
atmosphere must be confirmed to be free from potentially combustible gas. In addition, all site
specific and local rules and regulations must be followed with regard to obtaining permission to
work on the detector.
Legend
A
Display
B
Keys
Figure 2-3: LCD Programmer
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VESDA VLC-EX Product Guide
2.3
VESDA by Xtralis
Product Configuration
Legend
A
Reset / Isolate Button
B
LED Indicators
B
A
Figure 2-4: Front view of the VESDA VLC-EX detector
Legend
A
Programming socket
15 Pin for VLC-505-EX
9 Pin for VLC-500-EX
B
Termination card
C
VESDAnet number
D
Air filter cartridge
E
Filter screw
F
Air exhaust port
G Aspirator
H
1.6 Amp fuse
I
Anti tamper screw
J
Cable entry ports
K
Air inlet port
L
Wire terminal strips
Figure 2-5: View of components in the enclosures box
8
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3
VESDA VLC-EX Product Guide
Product Information
3.1
Specifications
Table 3-1: VESDA VLC-EX detector specifications
Supply Voltage
18 to 30 VDC
Power Consumption
5.4 W during normal operation, 5.9 W with alarm on
Current Consumption
225 mA at 24 VDC normal operation, 245 mA with alarm on
Fuse Rating
1.6A
Dimensions (WHD)
270 mm x 270 mm x 97 mm (10 5/8 in x 10 5/8 in x 3 7/8 in)
Weight
4.9kg (10.8 lbs)
Operating Conditions
(To operate the VLC-EX detector
outside these parameters please
contact your nearest Xtralis Office)
Storage Conditions
(Non-operational)
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Sampling Pipe Network
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Pipe Size
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Relays
Ambient: -10°C to +55°C (14°F to 131°F)
Tested: -10°C to +55°C (14°F to 131°F)
Sampled Air: -20° to 60° C (-4° to 140° F)
Humidity: 10-95% RH, non-condensing
Humidity: dry (<95%)
Temperature: 0° to 85° C (32°F to 185°F)
Must not exposed to sunlight or other radiation sources
Maximum area of coverage: 800 m² (8000 sq. ft.)
Maximum Single Pipe Length: 80 m (max. 40 holes)
Maximum branched (2) Pipe Lengths: 50 m each (max. 40 holes)
Computer Design Tool: ASPIRE2
ID: 15-21 mm (0.874 in)
OD: 25 mm (1.050 in.)
3 relays, contacts rated 2A @ 30 VDC
Programmable to latched or non-latched states
Relays Default Configuration
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Fire
Pre-Alarm
Alert/Fault (Maintenance and Isolate)
Programmable 0 - 60 sec. time delay for each relay
IP Rating
IP54
Cable Access
2 x 20 mm (3/4 in) cable entries (cable glands and blanking plugs not
supplied). Only use appropriately rated (IP 54 or better) glands.
Cable Termination
Screw terminal blocks (0.2-2.5 sq mm, 30-12 AWG)
Detector Resolution
0.005 to 20.00% obs/m (0.0015 to 6.25% obs/ft.)
Threshold Setting Range
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Key Software Features
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Alert: 0.005 - 1.990% obs/m (0.0015 - 0.6218% obs/ft.)
Pre-Alarm: 0.010 -1.995% obs/m (0.0031 - 0.6234% obs/ft.)
Fire: 0.015 - 20% obs/m (0.0046 - 6.25% obs/ft.)
Event log: Up to 12000 events stored on FIFO basis.
(Volatile Event Log) Smoke level, alarms and faults with time and date
stamp
AutoLearn: Minimum 15 minutes, maximum 15 days. (Recommended
minimum period 1 day).
During AutoLearn thresholds are NOT changed from pre-set values.
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VESDA VLC-EX Product Guide
3.2
VESDA by Xtralis
Product Dimensions
53.5mm
2.11in
97mm
3.83in
140mm
5.51in
65mm
2.56in
2x
20mm
0.79in
170mm
6.69in
270mm
10.63in
80mm
3.15in
270mm
10.63in
45mm
1.77in
31mm
1.21in
93mm
3.66in
4x
5mm 0.2in
38mm
1.48in
31mm
1.21in
40mm
1.59in
Figure 3-1: VESDA VLC-EX detector dimensions
3.3
Enclosure Materials
In compliance with EN 60079-0:2009 clause 7.1, Table 3-2 below specifies the materials used in the
enclosure:
Table 3-2: Material used for the enclosure
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Enclosure component
Material
Cover & case-rear
Brushed 304 stainless steel
Cover gasket
Closed Cell expanded EPDM foam
Display decal
125 μm polyester film
Sampling pipe sealing grommet
Thermoplastic rubber
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3.4
VESDA VLC-EX Product Guide
Default Settings
Table 3-3: Default values for the VESDA VLC-EX detector
Parameter
Default Values
Range
Minimum
Access Level
Maximum
Event Log - Events
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Enabled
N/A
N/A
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Alarms
Enabled
N/A
N/A
Adm
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Enabled
N/A
N/A
Adm
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Enabled
N/A
N/A
Adm
Fire Threshold
0.2% obs/m
(0.062% obs/ft)
0.015% obs/m
(0.0046% obs/ft)
20% obs/m
(6.25% obs/ft)
Adm
Pre-Alarm Threshold
0.14% obs/m
(0.044% obs/ft)
0.010% obs/m
(0.0031 obs/ft)
1.995% obs/m
(0.6234% obs/ft)
Adm
Alert Threshold
0.08% obs/m
(0.025% obs/ft)
0.005% obs/m
(0.0015% obs/ft)
1.990% obs/m
(0.6218% obs/ft)
Adm
Alarm Delays…Fire
10 Seconds
0 Seconds
60 Seconds
Adm
Alarm Delays…PreAlarm
10 Seconds
0 Seconds
60 Seconds
Adm
Alarm Delays…Alert
10 Seconds
0 Seconds
60 Seconds
Adm
Delay Times
Simultaneous
Simultaneous
Cumulative
Adm
Instantaneous Fire
Disabled
N/A
N/A
Adm
AutoLearn
14 days
0 Hours
0 Minutes
0 days
0 Hours
15 Minutes
15 days
23 Hours
59 Minutes
Adm
Air flow Thresholds:
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l
l
l
High Urgent
High Minor
Low Minor
Low Urgent
Adm
l
l
l
l
130%
120%
80%
70%
l
l
l
l
105%
105%
25%
25%
l
l
l
l
200%
200%
95%
95%
DST
Communications:
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l
l
l
Open-ended loop
Preferred Port
Network Delay
Health Check
l
l
l
l
None
A
15 seconds
45 seconds
l
l
l
l
N/A
N/A
10 seconds
40 seconds
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l
l
l
N/A
N/A
45 seconds
60 seconds
Device ID
Name/Location
N/A
N/A
Adm
Faults Latched
Latched
N/A
N/A
Adm
Filter Service Interval
731 days (2 years)
1 day (Dependent
up on environment)
3655 days (10
years)
Adm
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VESDA VLC-EX Product Guide
3.5
VESDA by Xtralis
Relay settings and conditions to change states
Table 3-4: Default relay settings and conditions to change state
Relay #
Relay
Condition for relay to change state
1
Fault
This relay is de-energized when one of the following
conditions occur:
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l
l
Fault found on detector or on VESDAnet loop
Air flow normalization is initiated
System isolation is initiated
When the Overlay Alert function has been selected,
this relay is de-energized once the Alert threshold is
initiated
3.6
2
Pre-Alarm
This relay is energized once the Pre-Alarm
threshold is initiated
3
Fire
This relay is energized once the Fire alarm
threshold is initiated
Auxiliary / GPI Terminals
The Bias, Reset (GPI) and LED terminals are located on the termination card (refer to Figure 6-1 on page 19
and Figure 6-2 on page 20). These terminals have the following functions:
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l
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Bias Terminals: These output terminals provide a 10 VDC supply to initiate the reset input terminals via
a remote reset/isolate switch.
LED Terminals: These output terminals provide a 5 V, 15 mA DC supply via a 220 ohm resistor to power
a remote LED.
Reset (GPI) Terminals: These terminals are also known as the General Purpose Input (GPI) and are
used for Reset, Mains OK or Standby functions. The input terminals require a voltage supply between 5
V and 24 VDC to operate. The voltage input to these terminals is isolated from the system by an optocoupler device. Connect the Reset (+) terminal to the positive output and the Reset (-) terminal to the
ground output of the external device.
Table 3-5: GPI functions
Function
State Change
Mains OK
The detector monitors the state of the
external power supply and responds to the
following conditions.
Mains OK ≥ 5 VDC is at this terminal
Mains Fail ≤ 2 VDC is at this terminal
Standby Mode
The detector Isolates and the aspirator
turns OFF when ≥ 5 VDC is at this
terminal.
No Alarms can be generated in this state
Reset Isolate
While power is applied to the GPI the
detector is isolated. In addition, the
connection of power to the GPI resets the
unit.
≥ 5 VDC Detector Isolates
≤ 2 VDC Detector Reset
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4
VESDA VLC-EX Product Guide
Mounting the Detector
The VESDA VLC-EX can be mounted onto the wall using the mounting bracket on any suitable secure
surface.
Since the VLC-EX is designed to be applied in an environment where there is potentially a hazardous
atmosphere, it is important that all users are aware of and follow the guidance given in the appropriate
standards, including in: EN 60079-14:2008, “Explosive atmospheres. Electrical installations design, selection
and erection” and EN 60079-17:2007, “Explosive atmospheres. Electrical installations inspection and
maintenance” and that they also adhere to the specific rules and regulations for the site where the product is
deployed.
The design of the VLC-EX allows for the detector to be inverted, i.e. with the air inlet at the bottom and the air
exhaust port at the top, when viewed from the front. This is made possible since both the internal plastic and
external stainless steel front covers can be fitted either way up, so that no matter which way up the detector is
mounted, the detector face will have the correct orientation.
Note:
The detector can only be mounted using the mounting bracket included in the packaging.
Caution:
4.1
The VLC-EX is intended for hazardous areas where there is little or no dust. Excessive or
unfavorable dust may lead to electrostatic charges occurring within the aspirator. While it is
very unlikely that such charges will lead to a high energy discharge it is recommended that little
or no dust be present. As a guide, if there is settled dust clearly visible on a surface that was
wiped clean a week earlier then further investigations may be necessary.
Securing the Internal Mounting Bracket
The internal mounting bracket for the VESDA VLC-EX is always mounted in the UP direction. The internal
mounting bracket is clearly marked with the word “UP” and an upward pointing arrow.
A
205.0mm
8.07in
C
Legend
A
Tab
B
This side to detector
C
Holes, 5/16 in (8mm) diameter
C
B
Figure 4-1: The internal mounting bracket for normal and inverted orientations
Secure the internal mounting bracket into the stainless steel VLC-EX case using the fasteners provided,
ensuring that the bracket is horizontally straight and sits flush on the surface.
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Legend
A
Tab
B
Rectangle Slots
A
B
Figure 4-2: Mounting bracket into the stainless steel case
Determine the ports for cable entry. Press out the tabs for the cable entry, air inlet and air exhaust ports.
4.2
Installing the Detector
Determine the orientation for mounting the VESDA VLC-EX detector. Remove the front cover and if
necessary separate it from the enclosure box. The back of the enclosure box is slotted over the four internal
mounting bracket tabs. Slide the detector downwards until it slides onto the tabs. Screw in the anti-tamper
screw. Check to confirm that the detector does not slide off the internal mounting bracket.
Legend
A
B
A
Back of detector
B
Rectangle Slots
C
Internal Mounting Bracket
D
Bracket Tab
C
D
Figure 4-3: Mounting the VESDA VLC-EX detector onto the internal mounting bracket
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VESDA VLC-EX Product Guide
Legend
A
Back of enclosure
B
Rectangle Slots
C
Enclosure Mounting Bracket
A
C
B
Figure 4-4: Mounting the enclosure onto the enclosure mounting bracket
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5
VESDA VLC-EX Product Guide
Connecting the VESDA VLC-EX to the Sampling
Pipe Network
5.1
Inlet Pipes
The air inlet port is designed to fit a standard pipe of 25 mm (1 in) OD.
The air inlet port allows the pipe to be inserted up to 15 mm (0.60 in). To connect the detector to the pipe
network:
1. Ensure a minimum length of 500 mm (20 in) of straight pipe before terminating the pipe at the air inlet port
of the detector.
2. Square off and de-burr the end of the sampling air pipe, ensuring the pipe is free from debris.
3. Insert the pipe into the inlet port ensuring a firm fit. DO NOT glue the inlet pipes to the pipe inlet manifold.
Note:
Caution:
5.2
It is recommended that metallic pipe is used, and that a metal inline filter (part number VSP-850-M)
is installed in the pipework, upstream of the detector, and earthed all together.
The VLC-EX is intended for hazardous areas where there is little or no dust. Excessive or
unfavorable dust may lead to electrostatic charges occurring within the aspirator. While it is
very unlikely that such charges will lead to a high energy discharge it is recommended that little
or no dust be present. As a guide, if there is settled dust clearly visible on a surface that was
wiped clean a week earlier then further investigations may be necessary.
Air Exhaust Pipe
If necessary pipe the exhaust back to the relevant VESDA Zone. The maximum suggested length for the
exhaust pipe is 4 m (13 ft.).
1. The exhaust from the detector should be arranged to avoid the ingress of dust and water. Extraneous
dust is prevented from entering the enclosure due to the natural airflow that is exhausted from the
detector. However, high pressure water jets could enter the unit if the exhaust port is not protected by a
pipe with a series of suitable bends. A possible arrangement is shown in Figure 5-1.
2. The arrangement of the sampling pipes must also be considered with regard to ingress of dust and water.
The pipe runs should be arranged so that water entering the pipe network does not run towards the
detector. For example, for the exhaust pipe, use a bend arrangement as in Figure 5-1 below, or a water
trap. However, with regard to dust ingress the specific requirements of the application must be
thoroughly investigated particularly with regard to the location of sampling points.
Figure 5-1: A possible exhaust pipe arrangement to maintain an IP54 rating
Notes:
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l
The pipe used to sample the air in the hazardous area must comply with all relevant codes and
standards. It is recommended that metallic pipe is used.
Even if the air is not to be returned to the sampling point, an exhaust pipe stub must be fitted to the VLCEX, so that the air sample is expelled from the case and the seal is maintained in the stainless steel
enclosure.
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6
VESDA VLC-EX Product Guide
Wiring Connections
6.1
Termination Card
The Termination Card acts as the interface for VESDAnet (VN Model), VESDA Link (RO Model), power
supply terminals, relay and relay terminals.
Since the VLC-EX is designed to be applied in an environment where there is potentially a hazardous
atmosphere, it is important that all users are aware of and follow the guidance given in the appropriate
standards, including in: EN 60079-17:2007, “Explosive atmospheres. Electrical installations inspection and
maintenance” and that they also adhere to the specific rules and regulations for the site where the product is
deployed.
This requires that the product be used with cable glands which are rated for the environment and are sized
correctly for the cables to be used to connect the unit. Care must be taken to terminate and restrain the field
wiring, such that it cannot be pulled out of the cable gland or the terminal strip.
Notes:
l
l
l
All unused cable entries, i.e. those without a cable/cable gland, must be fitted with a suitable blanking
plug in order to maintain the case seal.
The screw terminal blocks on the termination card are designed to accept conductors in the range 0.2–
2.5 sq mm (30–12 AWG). In accordance with EN 60079-15:2011, clause 7.2.3, ferrules must be used
when multi-strand wire is used.
The rating of the VESDA VLC-EX include some intrinsic safety concepts (ic) in that the reset switch
used is not gas tight but is connected to internal circuits that keep the energy at the switch contacts low
enough to avoid any sparking. Thus the ic rating does not require the use of Zener barriers of similar
energy limiting devices for the electrical connections (power and signaling) to the VESDA VLC-EX.
Terminal A
Terminal B
1
Bias (-) (GND)
1
Shield
2
Reset (-) (GPI)
2
VESDAnet A (-)
3
Reset (+) (GPI)
3
VESDAnet A (+)
4
Bias (+)
4
Shield
5
LED (-) (GND)
5
VESDAnet B (-)
6
LED (+)
6
VESDAnet B (+)
7
FIRE (NO)
7
Power (-)
8
Fire (C)
8
Power (+)
9
Pre-Alarm (NO)
9
Power (-)
10
Pre-Alarm (C)
10 Power (+)
11
Fault (NO)
NC = Normally Close
12
Fault (C)
NO = Normally Open
13
Fault (NC)
C = Common
Legend
A
Terminal A
D
1.6 Amp Fuse
B
Terminal B
E
VESDAnet Socket
C
Relays
Figure 6-1: VESDA VLC-EX termination card VN Model (VLC-505-EX)
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Terminal A
Terminal B
1
FIRE (NO)
1
Bias (-) (GND)
2
Fire (C)
2
Reset (-) (GPI)
3
PRE-ALARM (NO)
3
Reset (+) (GPI)
4
PRE-ALARM (C)
4
Bias (+)
5
FAULT (NO)
5
LED (-) (GND)
6
FAULT (C)
6
LED (+)
7
FAULT (NC)
7
Power (-)
NC = Normally Close
8
Power (+)
NO = Normally Open
9
Power (-)
10
Power (+)
C = Common
Legend
A
Terminal A
D
1.6 Amp Fuse
B
Terminal B
E
VESDAlink Socket
C
Relays
Figure 6-2: VESDA VLC-EX termination card RO Model (VLC-500-EX)
6.1.1
VESDAnet Terminals (VN Model only)
The VESDA VLC-EX detector can be connected to VESDAnet through the VESDAnet terminals on the
Termination Card. The terminals enable VESDAnet communication cables to be brought into the detector and
then looped out to another device. Data communication between the detector and other devices on
VESDAnet are bidirectional. The polarity of the data wires must be maintained throughout the network. It is
recommended that RS-485 (BELDEN 9841 - 120 Ohm) twisted pair cables (or similar) be used.
Note:
The VESDA VLC-EX is shipped without the VESDAnet A and B channels looped. If the detector is
not to be networked with other devices, then loop the A and B channels, as shown in Figure 6-3.
Shield
AA+
Shield
BB+
1
2
3
4
5
6
Figure 6-3: Stand-alone VESDAnet connection for VESDA VLC-EX
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Shield
AA+
Shield
BB+
1
2
3
4
5
6
VESDA VLC-EX Product Guide
Shield
AA+
Shield
AA+
Shield
BB+
Shield
BB+
Module 2
Module 1
(VLC)
Module 3
Shield
AA+
Shield
AA+
Shield
BB+
Shield
BB+
Module 5
Module 4
Figure 6-4: An example of the wire connection for VESDAnet (closed loop)
6.1.2
Relay terminals
There are three relays designated Fault, Pre-Alarm and Fire. The relays can be used to connect to a Fire Alarm
Control Panel (FACP) or to activate external devices. The default relay states are non-energized except for
the fault relay, which is set to the energized state on power up.
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VESDA VLC-EX Product Guide
6.1.3
VESDA by Xtralis
Programming socket
The 15 pin or 9 pin programming socket on each termination card provides the communication interface
between the detector and a LCD Programmer or PC. Use the information listed below to determine the type of
programming device required to program a VN or RO detector.
l
VN model (VLC-505-EX):
l
The programming socket on the termination card has 15 pins. Use a LCD Programmer and connect
the programmer cable to the 15 pin VESDAnet programming socket.
OR
l
l
Use a PC with a VESDA PC-Link HLI and the appropriate data cables to connect to the 15 pin
VESDAnet programming socket.
RO model (VLC-500-EX):
l
The programming socket on the termination card has 9 pins. The RO model is programmed using
PC software only. Connect the PC to the detector using an RS-232 data cable directly to the 9 pin
VESDAlink programming socket.
Note:
6.1.4
Connection to the programming socket shall only be made when the area is confirmed to be safe.
Refer to Section 11.1.1 for further information.
Auxiliary / GPI Terminals
Switch
Closed
Isolate
Open
Reset
Figure 6-5: Wire connection for Auxiliary / GPI Terminals
For further information refer to Section 3.6 on page 12.
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6.1.5
VESDA VLC-EX Product Guide
Typical Wiring to a Fire Alarm Control Panel (FACP)
The diagram below shows the correct way to wire VESDA detectors to a conventional fire alarm control panel
(FACP). It also shows where an End Of Line (EOL) resistor is correctly installed.
Figure 6-6: Typical wiring to a Fire Alarm Control Panel (FACP) with EOL
6.1.6
Wiring to an Addressable Loop Module
This wiring example is for wiring VESDA detectors to a typical 3 input 1 output Addressable Loop module.
These are example drawings. Refer to the appropriate product manual for the exact wiring details of the third
party equipment.
Figure 6-7: Addressable Loop Module with EOL
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7
VESDA VLC-EX Product Guide
Power Source
The power terminals on the termination card connect to a 24 VDC power supply. The detector has reverse
polarity protection to minimize the risk of damaging the detector.
Notes:
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The VESDA VLC-EX detector will not operate when the power supply is reversed.
Operating the detector outside the DC supply voltage range of 18 VDC and 30 VDC may cause damage
to the device.
The VESDA VLC-EX is provided with an additional transorb wired into the power terminals a shown in
Figure 7-1. This transorb must have a clamping voltage of 55V or less and an breakdown voltage of 33V
or more (Part number 3KP33CA from Littlefuse is a suitable example). This transorb must be fitted to
ensure compliance with Clause 13 of EN60079-15:2010.
24V POWER
+
+
7
GND
8
+24V
9
10
B
Legend
A
A
24V Power
B
Transorb for additional transient
protection
Figure 7-1: Wire connection details for the power terminals on the VN and RO model termination card
Note:
The PSU is usually located in a non-hazardous area and may supply power via a Zener barrier (or
other similar energy limiting device) but this is not required for safe operation of the VESDA VLCEX in normal operation. Refer to the notes in Section 6.1 for further information.
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8
VESDA VLC-EX Product Guide
Battery Backup
The power supply for the VESDA VLC-EX detector may be switched to a back up battery in the event of the
supply being disrupted. The size of the battery back up is determined by local standards and codes, the total
power required by the system, back up time required, allowance for reduction in capacity with age and
expected temperature variations.
Note:
It is recommended that batteries be changed as per the battery manufacturer’s specifications or as
per the relevant local codes and standards.
8.1
Backup battery size calculation sheet
Table 8-1: Calculating the size of backup battery
Normal Load @ 24 VDC
Equipment
Load mA
Number
Total
Full alarm load @ 24 VDC
Load mA
Detector
225
245
Remote Display
90
110
Remote Programmer
50
110
(backlight
off)
(backlight
on)
Hand-held Programmer 50
Number
Total
110
(backlight
off)
(backlight
on)
Total mA
Total mA
Other 24 V loads
X
Standby hours
X
Alarm hours
=
Standby capacity
Alarm capacity
Total capacity = Standby + Alarm capacity
Divided by 1000 for standby capacity
Multiplied by battery factor (Normally 1.25)
Note:
The PSU is usually located in a non-hazardous area and may supply power via a Zener barrier (or
other similar energy limiting device) but this is not required for safe operation of the VESDA VLCEX in normal operation. Refer to the notes in Section 6.1 for further information.
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9
VESDA VLC-EX Product Guide
Starting Up
Note:
The VESDA VLC-EX detector must be powered up by VESDA accredited personnel only.
After installing the VESDA VLC-EX detector it is necessary to power up the system. The system takes
approximately 15 seconds to power up. If the system fails to power up, check all power wires are secured to
the terminals and the polarities of the power wires are correct.
On power up:
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The aspirator starts up
The LED indicators on the VESDA VLC-EX front cover:
l
Will light up and cycle on and off
l
If a fault has been detected the Fault LED indicator will remain lit
l
If the system is functioning normally the OK LED indicator will remain lit
If a Remote Display Module is connected the following indicators are lit:
l
Fire alarm threshold indicators
l
Smoke threshold levels on bar graph
l
Two digit numerical display
l
Various fault indicators if there are any faults
l
System OK indicator if there are no faults
If any of the above does not happen, contact your commissioning engineer or distributor to troubleshoot the
problem.
Note:
It is normal for the detector to display faults immediately after power up. Reset the detector by
pressing the reset button on the front cover of the detector to unlatch the relays and fault LEDs.
Proceed with the preliminary systems check.
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VESDA VLC-EX Product Guide
9.1
VESDA by Xtralis
Installation Checklist
Site Name
Address
Detector Serial Number(s) and Date of
Manufacture
Name of Installer
Signature
Date
Perform the following checks listed below to ensure that all the necessary items are completed before handing
over to a commissioning engineer.
Installation Checks
Yes
No
Were the detector and the mounting bracket intact in the box?
Is the detector securely locked onto its mounting bracket?
Is the sampling air pipe firmly connected to the air inlet port? Ensure the
pipe is NOT glued.
Have the power wires been connected to the correct terminals on the
detector?
If required, has the end of line resistor been connected?
Have the alarm signaling wires been terminated to the correct terminals
on the detector?
Are the VESDAnet terminals looped back on a standalone VESDAnet
enabled detector? Refer to Section 6.1.1 on page 20 for further
information.
Is the exhaust pipe firmly fitted to the exhaust port? Ensure the pipe is
NOT glued.
Have both the plastic and stainless steel front covers been replaced
correctly?
Has AutoLearn Smoke been performed?
Please state the AutoLearn Smoke period____________
Is the air sampling pipework installed and checked as per the site plans?
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VESDA VLC-EX Product Guide
10 Preliminary Systems Check
A preliminary systems check is required after installing the VESDA VLC-EX detector, before it is
commissioned for use. The check can be conducted by connecting the detector to a LCD Programmer or by
using the Xtralis VSC software. The preliminary systems check includes:
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l
Conducting a VESDAnet communications check
Accepting factory default configurations, or changing to site requirements
Normalizing the air flow
Conducting a basic pass/fail smoke test
For details on the preliminary systems check refer to the LCD Programmer or the relevant software manuals.
Refer to the VESDA LCD Programmer and Commissioning Guides for further details.
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VESDA VLC-EX Product Guide
11 Maintaining and Servicing the Detector
To maintain the VESDA VLC-EX detector at its peak performance the maintenance schedule given below
should be followed. Maintenance can be conducted by the original installer, a VESDA distributor, or an
authorized service contractor. To work effectively the VESDA VLC-EX detector needs to be supported by a
well designed pipe network. The VESDA Maintenance Guide contains a schedule for pipe network
maintenance. More frequent maintenance may be necessary for harsh environments or be required by the
local fire authority.
Table 11-1: Maintenance schedule for VESDA VLC-EX detector
Maintenance Check
Power Supply
Visually Inspect Pipe Network
Caution:
Six
Monthly
Annually
Biennial
X
X
Filter Inspection
X
Pipe Integrity Smoke Test
X
Check Pipe Flow
X
Clean Sampling Point
X
Flush Pipe Network
X
When a VESDA VLC-EX detector has been isolated, no fire warnings will be issued by the VESDA
VLC-EX and any fire will go undetected. Prior to any maintenance or testing:
l
l
Note:
Quarterly
Inform appropriate supervising authority about the risk associated with isolating a VESDA
detector.
Ensure that any ancillary devices dependent on the VESDA VLC-EX is/are isolated before
work is begun.
Since the VLC-EX is designed to be applied in an environment where there is potentially a
hazardous atmosphere, it is important that all users are aware of and follow the guidance given in
the appropriate standards, including in: EN 60079-17:2007, “Explosive atmospheres. Electrical
installations inspection and maintenance” and that they also adhere to the specific rules and
regulations for the site where the product is deployed.
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11.1 Opening and Closing the Detector
11.1.1 Opening the detector
Caution:
1.
2.
3.
4.
Before undertaking any work on a VLC-EX detector, which would involve opening the outer
stainless steel case, the area in which it is installed must be made safe, i.e. the atmosphere
must be confirmed to be free from potentially combustible gas. In addition, all site specific and
local rules and regulations must be followed with regard to obtaining permission to work on the
detector.
Undo the four screws on the stainless steel front cover.
Open the front cover and allow the cover to hang by the attached plastic straps.
Undo the two screws on the plastic front cover.
Open the front cover and allow it to hang on the attached plastic strap.
11.1.2 Closing the Detector
1. Replace the front cover ensuring that the plastic strap and the cable loom are not wedged between the
cover and the detector body.
2. Tighten the two screws.
3. Replace the stainless steel front cover ensuring that the plastic straps and the earth cable are not
wedged between the cover and the detector body.
4. Tighten the four screws.
Figure 11-1: Opening and closing a VESDA detector inside the VLC-EX enclosure
11.1.3 Replacing the Filter
1. In order that the VLC-EX recognises that the filter has been replaced, the unit needs to be powered up
during this maintenance operation, so that the microprocessor recognises the change.
2. Having the unit powered up is in conflict with the requirements of working in a potentially hazardous
atmosphere. Therefore, this maintenance task is only possible by obtaining a permit to work in the
potentially hazardous atmosphere, in accordance with the site rules for conducting such work.
3. It is important that steps are taken to ensure that the area is made safe and remains so throughout the
maintenance operation.
4. If it is not possible to power the unit up in the potentially hazardous area, the unit needs to be removed to
a safe area, where the unit can be powered and the filter changed.
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11.2 Replacing the Aspirator
1. Remove the 4 screws securing the termination card (A)
2. Disconnect the wires on the aspirator (B)
3. Gently pull out termination card (A) from the interface card (the interface card is not visible, it is
connected to the back of the termination card). Leave the termination card suspended by its wires.
4. Pull off the air hose from aspirator pipe (C)
5. Undo the (captive) screws securing aspirator (D)
6. Lift the aspirator out
Legend
A
Terminal Card
B
Aspirator Wire Loom
C
Aspirator Air Hose
D
Aspirator
E
Pipe Network Port
F
Interface Card Slot
Figure 11-2: Illustration for replacing the aspirator
11.2.1 Assembly
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Put the aspirator pipe inlet into the hole leading to the pipe network (E).
Tighten the screws securing the aspirator (D).
Connect the air hose to the aspirator pipe (C). Ensure a tight fit over the pipe.
Insert the termination card (A) into the interface card slot (F).
Tighten the termination card screws (A).
Reconnect the wires to the aspirator (B).
Put the front cover back on and tighten the screws.
Replace the stainless steel front cover and tighten the screws.
Power ON the detector and check the aspirator is running.
Resolve all Fault conditions.
11.3 Internal Wiring
The table below provides the cable loom interconnecting details inside the detector.
Table 11-2: Interconnecting loom details
From
To
Connector
Cable Name
Name on CPU
# Pins
CPU card
Detection chamber
Pre-amp or X9
Pre Amp
6 Wire ribbon
CPU card
Detection chamber
Laser or X10
Laser
6
Termination LED PCB
card
LED card or
X11
LED cable
7
Termination Aspirator
card
Aspirator or X12 Aspirator cable 3
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12 Spare Parts
On larger sites having multiple detectors it is advisable to stock certain critical spare parts. A list of spare
parts is given below:
Table 12-1: Recommended spare parts stock
Part No.
Description
VSP-005
Filter Cartridge
VSP-501
Aspirator
VSP-502
VLC VN Remote Display Module
VSP-510
VLC RO Termination Card (CTC-RO)
VSP-515
VLC VN Termination Card (CTC-VN)
VSP-850-M
Note:
Metal Inline Filter
Since the VLC-EX is designed to be applied in an environment where there is potentially a
hazardous atmosphere, it is important that all users are aware of and follow the guidance given in
the appropriate standards, including in: EN 60079-17:2007, “Explosive atmospheres. Electrical
installations inspection and maintenance” and EN 60079-19: 2011, “Explosive atmospheres.
Equipment repair, overhaul and reclamation” and that they also adhere to the specific rules and
regulations for the site where the product is deployed.
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Index
relay settings
A
addressable loop module
23
air exhaust pipe
17
air flow normalisation
12, 31
air flow thresholds
11
air inlet port
17
air sampling pipe network
alert threshold
3
11
aspirator
3, 35
aspirator assembly
35
aspirator replacement
35
B
battery backup
27
bias terminals
12
C
cable glands
19
check pipe flow
33
check pipe network
33
clean sampling point
33
combustible gas
7, 34
communications
11
system
5
urgent
5
zone
5
fault LEDs
29
faults latched
11
filter inspection
33
filter replacement
34
filter service interval
11
fire relay setting
12
fire threshold
11
first stage air filter
3
flush pipe network
33
G
gas
7, 34
GPI
12, 22
terminal
health check
11
high minor
11
high urgent
11
I
4
default settings
11
delay times
11
detection chamber
3
device ID
11
inlet pipes
17
installation checklists
30
internal wiring
35
IP rating
17
isolate button
6
isolate LED
5
E
explosive atmospheres
12
H
D
de-isolate
12
L
19, 33, 37
F
fault
laser detection chamber
3
LCD Programmer
7
LED
airflow
5
green
4
filter
5
red
4
network
5
yellow
4
power
5
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LED and reset/isolate buttons
4
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LED terminals
12
low minor
11
low urgent
11
M
S
second stage filter
3
sensitivity
6
silence button
6
mains OK
12
smoke level
maintaining and servicing
33
spare parts
37
mode
6
standby mode
12
mode/test button
6
starting up
29
mounting bracket
13
system OK indicator
29
mounting unit
5
N
network delay
T
termination card
11
O
open-ended loop
11
optical surfaces
3
opto-coupler
12
overlay alert function
12
P
pipe inlet manifold
3, 17
19
U
ultra clean air
3
unlatch relays
29
V
VESDAnet
7
VLC-500-EX
1, 7
VLC-505-EX
1
VLC-EX
pipe integrity smoke test
33
dimensions
10
power supply
33
mounting
13
pre-alarm light
5
pre-alarm relay
12
pre-alarm threshold
11
preferred port
11
preliminary systems check
31
product specification
9
programming socket
22
VLC configuration
relay terminals
remote display module
reset (GPI) terminals
8
VN model
20, 22
W
wiring connections
19, 23
addressable loop module
23
RS-232 data cable
22
RS-485
20
R
40
6, 11
Z
21
zone number
6
5
12
reset button
6, 29
reset/isolate
4, 12
reverse polarity protection
25
RO model
22
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