GasTech GTA-VSD20i Operator'S Manual Download Page 14 | Manualshive

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© 2011 Gastech Australia Pty Ltd

Page 12

3.1.4

Connections To Relay Switched Functions.

Relay Contacts are rated at 1.5A each

(resistive). Maximum voltage on each

contact is 30VDC or 250VAC. The relay

common terminal is rated 5A maximum.

If the relays are being used to switch

inductive loads such as contactors, motors

or lamps directly, the contacts are rated

20WDC/100WAC maximum. If in doubt,
please contact GasTech Australia.

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Summary of Contents for GTA-VSD20i

Page 1: ...t 61 8 6108 0000 e info gastech com w gastech com GTA VSD20i Digital Ventilation Fan Controller System OPERATOR S MANUAL ...

Page 2: ...GTA VSiTM Digital Ventilation Fan Controller System Part Number 73 8010 Manual Revision v1 0 12 August 2014 ...

Page 3: ... From Gas Sensors and Connection to Fan System 11 3 1 4 Connections To Relay Switched Functions 12 4 System Operation 13 4 1 System Commissioning 13 4 2 Running The System 13 4 2 1 Enabling a Channel HMI required 13 4 2 2 Entering the Setup Password HMI funcion 13 4 2 3 Normal Input Signal Operation 13 4 2 4 Fault Signal Indication 13 4 2 5 Fan Control Alarm Relays 14 4 2 6 Variable Speed Enable S...

Page 4: ...es registration in the United States only and the TM is in Australia registrations may not have been issued at present in other countries All other product names and logos are trademarks of their respective owners DISCLAIMER Under no circumstances will GasTech Australia be liable for any claims losses or damages resulting from or arising out of the repair or modification of the equipment by a part...

Page 5: ...erform all needed repairs to restore the instrument to full operating condition including reactivation or replacement of all out of warranty electrochemical cells You may send the unit freight prepaid to GasTech Australia Pty Ltd 24 Baretta Rd Wangara 6065 Western Australia Attn Service Department Enclose the copy of your contact details Pack the instrument and all its accessories preferably in it...

Page 6: ...e TPA implied by Division 2 of Part V of the Act other than that implied by section 69 of the TPA the liability of the Company for such breach shall subject to section 68A 2 of the TPA be limited to one of the following as determined by the Company a the replacement of the Equipment or the supply of equivalent Equipment b the payment of the cost of replacing the Equipment or of acquiring equivalen...

Page 7: ...is manual particularly those concerning installation operation and maintenance be read understood and followed Notices are used in this operator s manual to alert you to hazardous conditions to person or instrument and to notify you of additional information This operator s manual uses the following notices NOTE Notifies you of additional information CAUTION Notifies you of potential damage to equ...

Page 8: ...ting together to form the desired system The components are The main controller optional extender Modules and an optional Graphical Display The main control module is supplied factory pre configured and will operate independently without the HMI unit connected The HMI is available as an option for systems where changes need to be made to the channel operations of the system and or visualisation of...

Page 9: ... There are a number of additional features on the main controller but these are used for factory programming and test and do not need to be included in user applications The Run Stop switch must be in the Run position for the controller code to function Signals X0 to X7 are not used in the GTA VSD20i system Connection to these terminals is not required 4 20mA Inputs channels 1 3 4 20mA Input chann...

Page 10: ...ce the chance of wires becoming loose The retaining clip is at the bottom of the housing To secure the controller to DIN rail pull down the clip place it onto the rail and gently push it up To remove the unit pull the retaining clip down with a flat screwdriver and gently remove it from the DIN rail The optional HMI unit is designed for panel mounting A mounting kit with gasket is provided to allo...

Page 11: ...Page 9 2011 Gastech Australia Pty Ltd Main Control Unit Front Panel See following section and wiring diagrams for information on connecting to the controller terminals ...

Page 12: ...ed on the requirements of the application The diagrams below serve as a guide for such systems Connectors on the modules are marked to indicate function and pin function 3 1 1 Power Connections Main Control Unit Extender Module and HMI 3 1 2 Power Supply Considerations The power input to the main control modules and HMI is DC When configuring a system using the modules please note the following po...

Page 13: ...Page 11 2011 Gastech Australia Pty Ltd 3 1 3 Connections From Gas Sensors and Connection to Fan System For sensor connection details please refer to the individual sensor user manuals ...

Page 14: ...ed at 1 5A each resistive Maximum voltage on each contact is 30VDC or 250VAC The relay common terminal is rated 5A maximum If the relays are being used to switch inductive loads such as contactors motors or lamps directly the contacts are rated 20WDC 100WAC maximum If in doubt please contact GasTech Australia ...

Page 15: ...en stored for a long time or stored in extremes of temperature the settling time of the sensors may be longer than the 60 seconds resulting in a period where the signals into the controller are seen as measured gas concentrations The result of this is hat connected fan systems will activate until the sensors stabilise to their normal base line condition If this is likely to cause a problem with th...

Page 16: ...ignal is used in conjunction with the 0 10VDC output drive signal to control the fan speed during its on cycle 4 2 7 Fan Control Voltage The main control unit produces a control voltage signal that can be connected to fan controller units to allow the fans to be driven at variable rates The control voltage range is the industry standard 0 10VDC The 0 10VDC is scaled such that 0V represents 8ppm of...

Page 17: ...Page 15 2011 Gastech Australia Pty Ltd 5 System Characteristics ...

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