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Velocity VDOT-ASD-400 User Manual

Aspirating smoke detector
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VDOT-ASD-400
Aspirating Smoke Detector
User's Manual

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Summary of Contents for Velocity VDOT-ASD-400

  • Page 1 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual...

  • Page 2: Table Of Contents

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Content Introduction ................................3 Features ..................................3 Specification ................................5 Sampling Pipework Design ..........................8 Considerations ....................................... 8 Design Guidelines ...................................... 1 1 Installation ................................ 1 3 Mechanical Installation ................................... 1 3 Electrical Installation .................................... 1 5 Front Panel ................................ 2 0 Control .......................................... 2 1 Display .

  • Page 3: Introduction

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Introduction VDOT-ASD-400 is aspirating smoke detectors especially developed by ASD prevent CO., Ltd. for large open space very early warning fire detection. Due to the nature of aspirating smoke detection systems, the air samples from all the individual sampling pipes are drawn into one central detection unit causing the smoke particles to mix, making the identification area difficult to determine.
  • Page 4 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 l Up to 4x100m Pipe Length* (4x10 sampling holes) l Up to 4x25 Sampling Holes* (4x60m sampling pipe length) l 7 Relays Outputs on Termination Board l 16 Relays on Zone Relay Board (Optional) l 3 in 1 Control/Display/Programmer Front Panel l RS485 Network l Support Modbus RTU Open Protocol *Note: Maximum pipe length and maximum number of sampling holes cannot be achieved at the same time. When maximum pipe length is the major design consideration, the number of sampling holes must be reduced.

  • Page 5: Specification

    Ÿ *Note ： Please refer to Velocity ASD Design manual for the relationship between pipe length and the number of sampling holes. The ASDFlow air sampling pipe network design tool can be used to calculate the maximum transport time and sampling hole sensitivity.
  • Page 6 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Alarm Levels and Time Delay Alert (0~60 sec.) Action (0~60 sec.) Fire-1 (0~60 sec.) Fire-2 (0~60 sec.) Environment Smoke Learning 24hours, 365days Non-Stop Smoke Background Level Learning Flow Detection Detection Principle: Heat Mass Detection...
  • Page 7 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Display 20 segment smoke level bargraph 6-digits Numerical LEDs Display Real Time Smoke Level Ÿ Real Time Airflow Level Ÿ Device Address Ÿ Active Event & Codes Ÿ 4 Fire Alarm Indicators Alert, Action, Fire 1, Fire 2 Ÿ...

  • Page 8: Sampling Pipework Design

    There are however a few rules, which must be adhered to, and these rules are equally applicable to all aspirating systems. The information contained in this manual is intended as an overview only. For further information please see the complete Velocity ASD Design Manual.
  • Page 9 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 maximum transport times may be desirable in certain applications and should be specified as part of the risk assessment. For example, Class A ASD systems are generally designed with transport times of less than 60 seconds.
  • Page 10 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Two branch system Four branch system Balance VDOT-ASD-400 Aspiration Detector Velocity Detection...

  • Page 11: Design Guidelines

    Maximum pipework limitation The limitation of each pipe inlet of VDOT-ASD-400 when the aspirator speed set to 10 is 100m pipe length with up to 18 holes alone the pipe (maximum pipe length) or 60m pipe length with up to 25 holes along the pipe (maximum holes) under the requirement of 120s maximum transport time.
  • Page 12 Class B: 60 holes Class C: 100 holes In Consideration of both maximum pipework and system sensitivity, the recommendation of pipe length and number of holes to achieve different sensitivity of VDOT-ASD-400 are EN54-20 Class A: Maximum 40 holes totally 4x100m (4x10 holes) Ÿ...

  • Page 13: Installation

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Installation Note: It is recommended that the installation is carried out by suitably experienced and trained personnel. Mechanical Installation Dimensions The mounting holes in each corner are used to mount the device on the wall. It is recommended the device is 1.5m above the floor.
  • Page 14 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Cable entries are also provided on the side and bottom. It should be noticed that some cable entries are non-cut through holes, a punch using a screwdriver and hammer or a proper tool are needed to open the entry holes.

  • Page 15: Electrical Installation

    Filter Termination Board High Sensitivity Smoke Detector Above picture is the internal view of the VDOT-ASD-400. All the electrical connections should be made to the removable connectors on the termination board or the relay board if it equipped. Cables Power cable should be 2.0mm -2C of sufficient current carrying capacity.
  • Page 16 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Terminal Connections VDOT-ASD-400 Termination Board Power Supply Connections There are two 24Vdc power terminals on the termination board. One must be connected to a 24±20% (19.6~28.8) DC Power Supply. The device may be powered by any EN54-4 compliant monitored 24DC power supply of sufficient capacity.
  • Page 17 Care should be taken for the relay’s NO or NC connection when changing relay functions. GPI, General Purpose Input There are eight General Purpose Input terminals on VDOT-ASD-400 termination board. Those inputs are designed to monitor the status of the connected devices. The connected devices monitored by the GPI can be just a button, a fault relay from the power supply, or even alarm relay from other detector.
  • Page 18 GPI-1 is open, the device reports a GPI-1 fault. The GPI-2 on the VDOT-ASD-400 terminal board is an active input with monitoring contact, and is disabled by default. To enable the GPI-2, mount both the P1 and P2 jumper selection to 2/3 PIN and set the corresponding GPI function.
  • Page 19 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Computer Management System (a computer software) can monitor all devices on network. AVA 通訊網路RS-485 連線架構 SCADA/HMI/PLC systems capable of Modbus RTU open protocol can communicate with ASD devices. 偵測主機 偵測主機 偵測主機 偵測主機 ASD Device...

  • Page 20: Front Panel

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Front Panel The VDOT-ASD-400 front panel is a Control / Display /Programmer 3 in 1 LED display. Display Mode Indicator Bargraph LED 6-digits Numerical Display - 20 segments Alarm Level Indicators Power Indicator Isolate Indicator...

  • Page 21: Control

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Control Action Description RESET Press once Reset, press this key to clear alarms or faults. ISOLATE/ Press and hold for 2 sec. The device will be isolated when it was not De-ISOLATE isolated. It will be de-isolated if it was isolated.
  • Page 22 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 FIRE 2 (red) When the Fire 2 Threshold has been reached and the appropriate time delays have expired. The detector will generate Fire 2 Alarm. DET’N (yellow) Smoke detection fault FLOW (yellow) Airflow Hi/Lo fault, air flow sensor fail, aspirator fail SYSTEM (yellow) Except DET’N/FLOW error, all other error is SYSTEM error...
  • Page 23 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 The default display item can be changed by pressing and hold <MODE> key for 2 seconds. Numerical LED Description Indicator In normal operation, indicates the reading on numerical display is current smoke concentration.
  • Page 24 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Mode Beeper action Disable the beeper. In alarm, it beeps 1 second in every 10 seconds. In fault, no beep. In alarm or fault, it beeps 1 second in every 10 seconds. In alarm, it beeps continuously. In fault, it beeps 1 second in every 10 seconds.

  • Page 25: Parameter Setup

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Sensitivity Mode Confliction Auxiliary Sensor Fault Sensor 1 Failed Sensor 2 Failed Sensor 3 Failed Sensor 4 Failed Sensor 5 Failed Learning Flow Normalization Smoke Background Learning Isolation Device Isolated Zone Isolated Display panel has integrated control/ programming that when in operating mode, the key function on panel is able to execute REST/ISOLATE/SILENCE/TEST function as well as to display the figure of Smoke/Flow/Addr/Evt by numerical tube;...
  • Page 26 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 successfully stored. Note: if password setting to 1(ON) but without entering password or wrong password was entered, press +/- will cause no reaction. u Bargraph grid represents parameter no., ex. Enter parameter 15 will lead 15th Bargraph grid starts to flash.

  • Page 27: Parameter Functions

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Parameter Functions Access Menu Parameter Description Level The detector smoke level in %/m for the bargraph 1 Alarm Level & Full Scale 0.01 20.0 0.20 reaching its full scale (20 bars). The smaller the value, the...
  • Page 28 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 indicating a sign of pipe breakage. On the other hand, the flow reading less than 100 means the current flow is smaller than normal condition, indicating a sign of pipe or sampling port blockage.
  • Page 29 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 TEST 9 GPI GPI-1 Setting the GPI terminal to below functions: GPI-2 0: NOT USED 8: SENSITIVITY MODE 1 1: RESET 9: SENSITIVITY MODE 2 GPI-3 2: ISOLATE 10: SCAN (VDOT-ASD-400 Only) GPI-4...
  • Page 30 Setting this function to Y enables the smoke/flow log. Enable There are two selectable log modes, CHANGE and RATE. On VDOT-ASD-400, 0 is CHAGNGE and 1 is RATE. When Smoke Log the log mode “CHANGE” is selected the following Mode...
  • Page 31 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 have higher sensitivity in non-working hours. Or when there’re pollutants outside the detection zone causing false alarms, it can be solved by decrease the sensitivity by using another ASD device to detect the pollutant level and connect its relay to the GPI of the ASD device in the detection zone.

  • Page 32: Commissioning

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Commissioning Before commissioning the detector, the local standards of aspirating detection systems must be consulted. These standards differ widely throughout the world and specific advice for the market in one country may not be applicable to another.
  • Page 33 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 1. If the device is connected to Management System Software, the date and time can be synchronized to the computer date and time. All the devices on the network can be synchronized by Management System Software at the same time.

  • Page 34: Maintenance

    VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Maintenance VDOT-ASD-400 aspirating smoke detector is a very low maintenance detection system. If required, external cleaning of the unit should be performed using a damp (not wet) cloth. Do not use solvents as these may mar the display bezel. The only part that may require field replacement during servicing is the dust filter.
  • Page 35 Press the <Test> button (if it’s enabled) to check if all the LEDs on the display illuminates normally. Check the Air Flow a. Use VDOT-ASD-400 front panel display or Management System computer software to check and record the airflow readings. b. Compare the reading to history record to see if there’s significant change. Airflow reading during maintenance should be confirmed as ±...
  • Page 36 Shut down the power supply mains power. Check if the power supply back up output and its display function correctly. Check if there’s relevant fault generated on VDOT-ASD-400 device if the mains or power fault monitoring GPI is connected. Check if there’s relevant fault generated on fire alarm panel if the fault relay is connected to fire alarm system.
  • Page 37 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 the dust in the pipework and the sampling holes. Alternatively, to ease the maintenance, a three ways valve can be installed before the pipe inlet so that a maintenance inlet is provided on the three ways valve.

  • Page 38: Appendix

    “identify” the pipe having the most smoke. We call this process pipe scan. For example, when there’s smoke goes into the sampling points on pipe 3, the VDOT-ASD-400 will detect the smoke and generate alarms when the smoke alarm levels have been reached and appropriate time delay expired.
  • Page 39 ASD-400 so it will scan automatically when alarm, both pipe scan and scan level should be set. For example, if you want VDOT-ASD-400 automatically perform pipe scan when there’s an Alert condition, set the pipe scan to Enable and scan level to 1.
  • Page 40 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 3. The scan time default setting is 20 seconds. Shorter scan time is possible if the pipe length is not long. In case the scan process is too time consuming, set the scan time to 15s is appropriate.

  • Page 41: Zone Relay Board

    Zone #3 Zone #4 Zone Relays and their Zone ID on the Zone Relay Board (optional) in VDOT-ASD-400. The first relay in each zone is Normally Closed for its default setting is Fault. The 2 /3rd/4th relays in each zone are Normally Open with default settings of Alert/Action/Fire 1 respectively.
  • Page 42 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 & Important Note: Zone Relay Board must be enabled before it can function properly. The factory default setting of zone relay board is disabled. Please set the zone relay board in item 20 (optional modules) to ON to enable the module.
  • Page 43 VDOT-ASD-400 Aspirating Smoke Detector User’s Manual V1 Velocity Detection Address: Detection House, 72-78 Morfa Road, Swansea SA1 2EN UK Email: sales@Velocitydetection.com http://www.velocitydetection.com VDOT-ASD-400 Aspiration Detector Velocity Detection...

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