Xtralis VESDA VLC-500-EX User manual

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
www.xtralis.com i
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.

VESDA VLC-EX Product Guide VESDA by Xtralis
ii www.xtralis.com
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 [phone]
D-A-CH [phone]
The Americas [phone]
Middle East [phone]
Asia [phone]
Australia and New Zealand [phone]
www.xtralis.com

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com iii
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 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.
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.

VESDA VLC-EX Product Guide VESDA by Xtralis
iv www.xtralis.com
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:
lFor a Class A detector, hole sensitivity must be better than 1.5% obscuration/m and transport time less than 60
seconds
lFor a Class B detector, hole sensitivity must be better than 4.5% obscuration/m and transport time less than 90
seconds
lFor 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:
lThe minor low and minor high flow thresholds should be set at 85% and 115% respectively
lThe flow through the detector predicted by ASPIRE2 should be in the range 20 to 65 lpm
Additional information:
lClass A detectors passed EN 54-20 approvals testing with 30 holes and 0.05% obscuration/m detector
sensitivity
lClass B detectors passed EN 54-20 approvals testing with 36 holes and 0.09% obscuration/m detector
sensitivity
lClass 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:
lUL
lULC
lFM
lLPCB
lVdS
lCCC
lActivFire
lNF (Système de Sécurité Incendie – www.marque-nf.com)
lVNIIPO
lCE
lEN 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

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 1
Table of Contents
1 Introduction 1
1.1 Configurations 1
1.2 Features 2
2 Operation 3
2.1 Display 4
2.2 LCD Programmer 7
2.3 Product Configuration 8
3 Product Information 9
3.1 Specifications 9
3.2 Product Dimensions 10
3.3 Enclosure Materials 10
3.4 Default Settings 11
3.5 Relay settings and conditions to change states 12
3.6 Auxiliary / GPI Terminals 12
4 Mounting the Detector 13
4.1 Securing the Internal Mounting Bracket 13
4.2 Installing the Detector 14
5 Connecting the VESDA VLC-EX to the Sampling Pipe Network 17
5.1 Inlet Pipes 17
5.2 Air Exhaust Pipe 17
6 Wiring Connections 19
6.1 Termination Card 19
7 Power Source 25
8 Battery Backup 27
8.1 Backup battery size calculation sheet 27
9 Starting Up 29
9.1 Installation Checklist 30
10 Preliminary Systems Check 31
11 Maintaining and Servicing the Detector 33
11.1 Opening and Closing the Detector 34
11.2 Replacing the Aspirator 35
11.3 Internal Wiring 35
12 Spare Parts 37
Index 39

VESDA VLC-EX Product Guide VESDA by Xtralis
2www.xtralis.com
This page is intentionally left blank.

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 1
1 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:
lRelays Only (RO) model (VLC-500-EX) - for stand alone VESDA VLC-EX
lVESDAnet (VN) model (VLC-505-EX) - for networked VESDA VLC-EX
Figure 1-1: VESDA VLC-EX detector

VESDA VLC-EX Product Guide VESDA by Xtralis
2www.xtralis.com
1.2 Features
The VESDA VLC-EX features make it an ideal smoke detector for protecting small environments and
individual objects in locations containing hazardous atmospheres:
lWide sensitivity range
lEach detector can cover an area of up to 800 m² (8000 sq. ft.)
lUp to three programmable alarm thresholds
lProgrammable relays
lAutoLearn feature
lOne pipe inlet that can be split into multiple pipes
lClean air barrier for optics protection
lOption for inverted mounting
lHigh efficiency aspirator
lAirflow monitoring
lOptional remote display and relay capability
lActive fault monitoring
lEasy cable termination
lEvent log to 12000 events
lRO Version: Relay Only version for stand alone VESDA VLC-EX
lVN Version: VESDAnet (VN) version for networked VESDA VLC-EX
lRemote modules available (VN version only) to meet site specific requirements
lGeneral purpose input with three programmable functions
lPC capable programming and monitoring
lFully supported by the ASPIRE2 pipe modelling software. Model the VLC-EX as a standard VLC

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 3
2 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

VESDA VLC-EX Product Guide VESDA by Xtralis
4www.xtralis.com
2.1 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
Reset / Isolate Push
Button Switch
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).
lTo Reset the unit, press this button once.
lTo Isolate the unit, press and hold the button for 2
seconds.
lTo de-isolate the unit, press and hold the button for 2
seconds.
lWhile the detector is Isolated, any faults may be
cleared by pressing this button once.
The button will not operate:
lif a remote Reset switch has been fitted to the Reset
(GPI) terminals and is set to the Isolate position; OR
lif the Reset/Isolate button has been locked out during
programming.

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 5
2.1.2 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
AThreshold indicators
BBar graph
CNumerical Display
DAlarm Level LEDs
EFault LEDs
FPush Button Keys
Figure 2-2: VRT-J00 Display Module mounted into a remote unit
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 de-
activated 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.
Table 2-2: Remote Display Module

VESDA VLC-EX Product Guide VESDA by Xtralis
6www.xtralis.com
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: It is normal practise to signal the Isolate condition to the Fire
Alarm Control Panel (FACP) using the Isolate relay.
Numerical Display 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: 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.
Table 2-2: Remote Display Module (continued...)

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 7
2.2 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
ADisplay
BKeys
Figure 2-3: LCD Programmer

VESDA VLC-EX Product Guide VESDA by Xtralis
8www.xtralis.com
2.3 Product Configuration
A
B
Legend
AReset / Isolate Button
BLED Indicators
Figure 2-4: Front view of the VESDA VLC-EX detector
Legend
AProgramming socket
15 Pin for VLC-505-EX
9 Pin for VLC-500-EX
BTermination card
CVESDAnet number
DAir filter cartridge
EFilter screw
FAir exhaust port
GAspirator
H1.6 Amp fuse
IAnti tamper screw
JCable entry ports
KAir inlet port
LWire terminal strips
Figure 2-5: View of components in the enclosures box

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 9
3 Product Information
3.1 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)
lAmbient: -10°C to +55°C (14°F to 131°F)
lTested: -10°C to +55°C (14°F to 131°F)
lSampled Air: -20° to 60° C (-4° to 140° F)
lHumidity: 10-95% RH, non-condensing
Storage Conditions
(Non-operational)
lHumidity: dry (<95%)
lTemperature: 0° to 85° C (32°F to 185°F)
lMust not exposed to sunlight or other radiation sources
Sampling Pipe Network lMaximum area of coverage: 800 m² (8000 sq. ft.)
lMaximum Single Pipe Length: 80 m (max. 40 holes)
lMaximum branched (2) Pipe Lengths: 50 m each (max. 40 holes)
lComputer Design Tool:ASPIRE2
Pipe Size lID: 15-21 mm (0.874 in)
lOD: 25 mm (1.050 in.)
Relays 3 relays, contacts rated 2A @ 30 VDC
Programmable to latched or non-latched states
Relays Default Configuration lFire
lPre-Alarm
lAlert/Fault (Maintenance and Isolate)
lProgrammable 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 lAlert: 0.005 - 1.990% obs/m (0.0015 - 0.6218% obs/ft.)
lPre-Alarm: 0.010 -1.995% obs/m (0.0031 - 0.6234% obs/ft.)
lFire: 0.015 - 20% obs/m (0.0046 - 6.25% obs/ft.)
Key Software Features lEvent log: Up to 12000 events stored on FIFO basis.
l(Volatile Event Log) Smoke level, alarms and faults with time and date
stamp
lAutoLearn: Minimum 15 minutes, maximum 15 days. (Recommended
minimum period 1 day).
lDuring AutoLearn thresholds are NOT changed from pre-set values.
Table 3-1: VESDA VLC-EX detector specifications

VESDA VLC-EX Product Guide VESDA by Xtralis
10 www.xtralis.com
3.2 Product Dimensions
270mm
10.63in
270mm
10.63in
97mm
3.83in
53.5mm
2.11in
45mm
1.77in
31mm
1.21in
2x
20mm
0.79in
31mm
1.21in
93mm
3.66in
38mm
1.48in
40mm
1.59in
140mm
5.51in
170mm
6.69in
80mm
3.15in
65mm
2.56in
4x
5mm 0.2in
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
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

VESDA by Xtralis VESDA VLC-EX Product Guide
www.xtralis.com 11
3.4 Default Settings
Table 3-3: Default values for the VESDA VLC-EX detector
Parameter Default Values Range Access Level
Minimum Maximum
Event Log - Events
lSmoke Level Enabled N/A N/A Adm
lAlarms Enabled N/A N/A Adm
lFaults Enabled N/A N/A Adm
lUser Action 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…Pre-
Alarm
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:
lHigh Urgent
lHigh Minor
lLow Minor
lLow Urgent
l130%
l120%
l80%
l70%
l105%
l105%
l25%
l25%
l200%
l200%
l95%
l95%
Adm
Communications:
lOpen-ended loop
lPreferred Port
lNetwork Delay
lHealth Check
lNone
lA
l15 seconds
l45 seconds
lN/A
lN/A
l10 seconds
l40 seconds
lN/A
lN/A
l45 seconds
l60 seconds
DST
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

VESDA VLC-EX Product Guide VESDA by Xtralis
12 www.xtralis.com
3.5 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:
lFault found on detector or on VESDAnet loop
lAir flow normalization is initiated
lSystem isolation is initiated
When the Overlay Alert function has been selected,
this relay is de-energized once the Alert threshold is
initiated
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
3.6 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:
lBias Terminals: These output terminals provide a 10 VDC supply to initiate the reset input terminals via
a remote reset/isolate switch.
lLED Terminals: These output terminals provide a 5 V, 15 mA DC supply via a 220 ohm resistor to power
a remote LED.
lReset (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 opto-
coupler 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