Woodward GS6 Installation And Operation Manual
  1. Manuals
  2. Brands
  3. Woodward Manuals
  4. Measuring Instruments
  5. GS6
  6. Installation and operation manual
Woodward GS6 Installation And Operation Manual

Woodward GS6 Installation And Operation Manual

Gas metering system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Released
Product Manual 26513
(Revision AA, 1/2025)
Original Instructions
GS6
Gas Metering System
Fuel Valve with On-board Electronic Controller
Analog and Digital Versions, Single or Dual Resolver
Installation and Operation Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GS6 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Woodward GS6

Summary of Contents for Woodward GS6

  • Page 1 Released Product Manual 26513 (Revision AA, 1/2025) Original Instructions Gas Metering System Fuel Valve with On-board Electronic Controller Analog and Digital Versions, Single or Dual Resolver Installation and Operation Manual...
  • Page 2 Revisions— A bold, black line alongside the text identifies changes in this publication since the last revision. Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly undertaken.

  • Page 3: Table Of Contents

    ......................6 EGULATORY OMPLIANCE 1. G ..................... 9 HAPTER ENERAL NFORMATION Introduction..............................9 Connections to the GS6 Valve ........................9 2. I ......................14 HAPTER NSTALLATION Introduction..............................14 Mounting..............................14 Electrical Connections ..........................16 Service Port ..............................23 3. D ...................
  • Page 4 ISTORY .......................... 91 ECLARATIONS Illustrations and Tables Figure 1-1. GS6 Valve Outline Drawing (Dual-conduit) ................10 Figure 1-2. GS6 Valve Outline Drawing (Single-conduit) ................11 Figure 1-3a. GS6FS Outline Drawing ......................12 Figure 1-3b GS6FS Outline Drawing ......................13 Figure 2-1. Piping Requirements ........................ 15 Figure 2-2.
  • Page 5 Table 2-3. CANopen Cable Limitation for GS6 ................... 21 Table 3-1. GS6 & GS6FS Operating States ....................26 Table 3-2. GS6 Resolver Configurations and Valve States ................ 26 Table 3-3. CANopen Cable Limitation for GS6 ................... 27 Table 3-4. Transmit PDO Table ........................28 Table 3-5.

  • Page 6: Warnings And Notices

    Released Manual 26513 GS6 Gas Metering System Warnings and Notices Important Definitions This is the safety alert symbol used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

  • Page 7: Electrostatic Discharge Awareness

    Do not touch the components or conductors on a printed circuit board with your hands or with conductive devices. To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715 , Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

  • Page 8: Regulatory Compliance

    European Parliament and the Council of 17 May 2006 on machinery. RoHS Directive: Restriction of Hazardous Substances 2011/65/EU: Woodward Turbomachinery Systems products are intended exclusively for sale and use only as a part of Large Scale Fixed Installations per the meaning of Art.2.4(e) of directive 2011/65/EU. This fulfills the requirements...
  • Page 9 Field wiring for the GS6 valve power input must be suitable for at least 103 °C. A conduit seal must be installed within 457 mm (18 inches) of the conduit entry when the valve is used in Class I, Division 1 hazardous locations.
  • Page 10 Classe I, Division 2 ou Zone 2. The GS6 single resolver valve weighs 18.1 kg (40.0 lb), and the GS6 dual resolver valve weighs 20.4 kg (45.0 lb). In order to prevent injury, use a lifting strap when handling the GS6 valve. Do not lift or handle the GS6 valve by any conduit or cable.

  • Page 11: Chapter 1. General Information

    General Information Introduction The GS6 valve is an electrically actuated fuel valve with an on-board, electronic position controller. The valve is designed to accept a demand signal, and then accurately position the spherical fuel metering element, exposing the port effective area proportional to flow. The metering element is designed to promote self-cleaning by a shear-type action created by the spherical element and shoe.

  • Page 12: Figure 1-1. Gs6 Valve Outline Drawing (Dual-Conduit)

    Released Manual 26513 GS6 Gas Metering System Figure 1-1. GS6 Valve Outline Drawing (Dual-conduit) (Dimensions Shown are in Inches.) Woodward...

  • Page 13: Figure 1-2. Gs6 Valve Outline Drawing (Single-Conduit)

    Released Manual 26513 GS6 Gas Metering System Figure 1-2. GS6 Valve Outline Drawing (Single-conduit) (Dimensions Shown are in Inches.) Woodward...

  • Page 14: Figure 1-3A. Gs6Fs Outline Drawing

    Released Manual 26513 GS6 Gas Metering System Figure 1-3a. GS6FS Outline Drawing (Measurements Shown in Inches) Woodward...

  • Page 15: Figure 1-3B Gs6Fs Outline Drawing

    Released Manual 26513 GS6 Gas Metering System Figure 1-3b GS6FS Outline Drawing (Measurements Shown in Inches) Woodward...

  • Page 16: Chapter 2. Installation

    Be careful when unpacking the GS6 valve. Check the assembly for signs of damage, such as bent or dented covers, scratches, and loose or broken parts. Notify the shipper and Woodward if damage is found.

  • Page 17: Figure 2-1. Piping Requirements

    This leakage will change the flow accuracy of the valve. The GS6 can be mounted onto a flat plate with 0.250-28 size bolts or mounted directly to the piping system using the 1.5 inch (38 mm) SAE flanges per J518 Code 61. Consideration must be given to the strength of the mounting plate or piping system, in order to support the 20.4 kg (45.0 lb) weight of the...

  • Page 18: Electrical Connections

    The GS6 valve is connected to the engine control system by the main terminal block connector. Field wiring for the GS6 valve power input must be suitable for at least 103 °C. A conduit seal must be installed within 457 mm (18 inches) of the conduit entry when the valve is used in Class I, Division 1 hazardous locations.

  • Page 19: Figure 2-2. Wago 736 Series Terminal Block

    (28 to 12 AWG). Recommended wire sizes are 3.0 mm² (12 AWG) for Power In (+) and (–) and 1.0 mm² (16 AWG) for other signals. Refer to Figures 2-3 and 2-4, and to the description below, for GS6 wiring requirements. •...

  • Page 20: Figure 2-4. Gs6 Plant Wiring Diagram

    GS6 Dual Resolver Valve Terminal Control System Block Figure 2-4. GS6 Plant Wiring Diagram Explosion Hazard—Do not remove covers or connect/disconnect electrical connectors unless power has been switched off or the area is known to be non-hazardous. When re-installing the electrical enclosure cover, tighten to 50 ±3 Nm (37 ±2 lb-ft).

  • Page 21: Shielded Wiring

    Example Calculation (AWG): 12 AWG wires will drop 0.028 V/ft at 7 A. Using 50 feet of wire between the GS6 driver and the power supply would result in a voltage drop of 50 X 0.028 = 1.4 V. Thus the power supply must always provide between 19.4 and 32 VDC as specified on the input power.

  • Page 22: Figure 2-5. Recommended Parallel Power Supply Connection

    Woodward P/N 1784-3032 (Phoenix Contact QUINT-PS-100-240AC/24DC/20, Phoenix Contact P/N 2938620) with 1000 µF 100 V electrolytic capacitor (Woodward P/N 1662-111) installed. Place the 1000 μF, 100 V capacitor across the + and – dc output terminals on the power supply.
  • Page 23 Terminal 6 = Shield The GS6 Analog Version is controlled via the 4–20 mA Input. Input scaling is such that 4 mA input current corresponds to 0% valve position and 20 mA input current corresponds to 100% valve position. Valve position (not flow) vs.

  • Page 24: Shutdown Input

    Terminal 9 = Shield The Shutdown Input provides a means to shut down and reset the GS6 driver through a relay or other dry contact. For normal operation, the shutdown inputs must be closed, (+) and (–) shorted together. When the Shutdown Input is opened, the driver is held in shutdown state, the valve is driven to the 0% position, the 4–20 mA Output is set to 0 mA, and the Status Output is put into shutdown.

  • Page 25: Service Port

    Released Manual 26513 GS6 Gas Metering System Service Port The service port (Figure 2-5) provides an RS-232 connection for troubleshooting and program upgrades. Connection to the service port should be made only when the area is known to be non-hazardous. When replacing the cover, torque the cover to 50 ±3 Nm (37 ±2 lb-ft).

  • Page 26: Figure 2-8. Service Port (Close-Up)

    Released Manual 26513 GS6 Gas Metering System Figure 2-8. Service Port (close-up) Woodward...

  • Page 27: Chapter 3. Description Of Operation

    There are different situations that will force the valve into shutdown. See troubleshooting for more details. If the GS6 Valve is a Digital version, also see the next section on Redundancy for situations that will force the valve into shutdown.

  • Page 28: Canopen Communications

    The GS6 is then power cycled -- OR -- The GS6 is set to a different "Input Type" and then returned to the "CANopen with Analog Backup" selection. (This action Closes/Opens the CAN device, thus providing the opportunity to change the CAN device's baud rate.)
  • Page 29 The Heartbeat message is not supported. CANopen State The GS6 valve starts in boot-up mode, sends the required Boot Message, and then goes to the pre- operational state. An operational command needs to be received on the CAN bus to enter the Operational mode.

  • Page 30: Figure 3-1. Canopen State Chart

    Released Manual 26513 GS6 Gas Metering System Init Pre-Operational Stopped Operational Figure 3-1. CANopen State Chart The "DigitalCom Slow-Data Not Received" bit will be initially SET when CANopen digital communications begins. It is CLEARED when at least one "Slow Request #1" (RxPDO2) AND at least one "Slow Request #2"...
  • Page 31 Bit 0: Shutdown. If this bit is "1", the GS6 will shutdown and set the Shutdown bit. Bit 1: Reset diagnostics bits. On a "0" to "1" transition (Edge triggered), the GS6 will reset from a shutdown or alarm condition and reset all the diagnostic bits.
  • Page 32 Bit 3: Shutdown. If this bit is "1" the GS6 is shutdown. This bit will follow the status output. If all shutdown conditions are not true and the start-up position is not true this bit will be set to zero.
  • Page 33 Released Manual 26513 GS6 Gas Metering System Transmit PDO4 – Actual current and Actual Current Filtered Message type: Transmitted 2 ms after Transmit PDO3 COB Id: 1152+Node Id (0x480+NodeId) Data length: 8 bytes Data: Byte 1-4: Current Feedback Data length:...
  • Page 34 Released Manual 26513 GS6 Gas Metering System Byte 3-4: Diagnostic Word 2 (The Alarm(ALM) and Shutdown (SD) setting can vary depending on the valve configuration purchased) Data length: 2 bytes Bit0: StartupPositionSensorErr. Bit1: PositionSensorErr. Bit2: PositionErr. Bit3: CurrentControlErr. Bit4: DigitalNotAllSlowDataReceived.

  • Page 35: Shutdown(Sd) And Alarm (Alm) Glossary

    Released Manual 26513 GS6 Gas Metering System Shutdown(SD) and Alarm (ALM) Glossary Actual Position 1 (Output) – Feedback of the resolver 1 position. Actual Position 2 (Output) – Feedback of the resolver 2 position. AdcErr (Output – Internal Driver/Electronics Error) – Failure of the Analog to Digital Converter.
  • Page 36 Released Manual 26513 GS6 Gas Metering System DualResolverDiff1Err (Output) – This bit will go to a “1” if the difference between resolver 1 and resolver 2 is greater than the value of “DualResolverMaxDiff1”. DualResolverDiff2Err (Output) – This bit will go to a “1” if the difference between resolver 1 and resolver 2 is greater than the value of “DualResolverMaxDiff2”.
  • Page 37 Converter. Shutdown (Output) – If this bit is "1" the GS6 is shutdown. This bit will follow the status output. If all shutdown conditions are not true and the start-up position is not true this bit will be set to zero.

  • Page 38: Chapter 4. Service Tool

    The VPC Service Tool is available for use with the analog version or digital versions of the GS6 valve. The Service Tool for this product can be found on the web at www.woodward.com/software. Select software product “VPC Tools”...

  • Page 39: Connecting & Disconnecting The Vpc Service Tool

    4-2). Figure 4-2. Service Tool Connection Disconnecting the Service Tool from the GS6 is done by either pressing the disconnect button or selecting ‘Device’ and ‘Disconnect All Devices’ from the pulldown menu (Figure 4-3). Figure 4-3. Service Tool Disconnection Selecting a Communication Port...

  • Page 40: Figure 4-4. Vpc Tool Communication Port Selection

    (Figure 4-4). If a default port is selected, the Service Tool will always establish the connection to the GS6 immediately after pressing the connect button without asking for a communication port again.

  • Page 41: Figure 4-5. Communication Lost

    If communication has not been established, disconnect the Service Tool from the GS6 by selecting the “Disconnect” button from the main tool bar (Figure 4-3). Check the serial connection between the GS6 Driver and PC and make sure the straight-through serial cable is connected correctly on the PC and GS6 RS-232 Port.

  • Page 42: Introduction And Instruction Screen

    Status LEDs There are five status Common LEDs components on this page of the VPC Service Tool that depict the overall status of the GS6 driver. These components are also integrated into the top of each active Service Tool Pages.

  • Page 43: Vpc Service Tool Screen Navigation

    The top portion of every display screen of the VPC Service Tool contains common components that depict the overall status of the GS6 driver. It also shows control buttons can be used to shutdown and reset the control at any time (Figure 4-8).

  • Page 44: Manual Control Screen

    The Manual Control screen is used during initial commissioning or when troubleshooting to confirm the operation of the GS6. This screen can also used to monitor the ability of the system to respond to a change in position setpoint, valve position, motor current level and valve identification (Figure 4-9).

  • Page 45: Figure 4-10. Trend Chart

    Released Manual 26513 GS6 Gas Metering System Position Settings The VPC can be configured to position the valve based on a set point generated from the service tool. To configure the VPC for this operation, the input source must be set to Manual Input using the Service Tool settings editor.

  • Page 46: Figure 4-11. Creating A Custom Trend Chart

    Released Manual 26513 GS6 Gas Metering System Creating a Custom Trend Chart Point the cursor to a control parameter to be monitored and right clicking. The new ‘Add to trend’ button will pop up (Figure 4-11). Figure 4-11. Creating a Custom Trend Chart Selecting the “Add to trend”...

  • Page 47: Figure 4-12. Trending Properties

    Released Manual 26513 GS6 Gas Metering System Figure 4-12. Trending Properties Exporting and Saving Trend Values Custom trend values can be exported and saved to a file of Comma Separated Values (*.csv file) or Web Page (*.htm) file by pressing the export button. This file can be opened in a spreadsheet or math analysis software package for post-processing of the data and further analysis.

  • Page 48: Process Fault & Status Overview

    A red LED indicates the process is at fault. In the case of the Power Reset or Analog input error, the GS6 will be in a shutdown mode. If the LED indicator is green, the process fault or status flag indicates no error detected and GS6 is ready for operation (Figure 4-13).

  • Page 49: Process Fault & Status Configuration Overview

    This means that if there is a process fault, the driver will not shut down as a result of the occurrence. If red, the process fault and status flag is configured as a shutdown. A fault under this configuration will force the GS6 to shutdown (Figure 4-15). Figure 4-15. Diagnostic Configuration LED...

  • Page 50: Setpoint Source Selection & Control Operations Summary

    Setpoint Source Selection & Control Operations Summary The GS6 can be operated using different sources to demand the setpoint signal. The Setpoint Source Selection page provides an overview on which setpoint source is currently selected and the current setpoint settings for the selected source.
  • Page 51 Released Manual 26513 GS6 Gas Metering System Table 4-1. GS6 & GS6FS Setpoint Sources Selected Input Source Setpoint Signal Type Analog Position Control 4–20 mA Internally generated setpoint, Manual Position Control user-configurable from the Manual Control page CANopen base protocol using CANopen Position CAN Port.

  • Page 52: Figure 4-17. Manual Position Control

    Manual Position Control Setpoint Source The GS6 can be configured for Manual Control operation mode when the Manual Position Control is set on the Selected Input Type (Figure 4-17). In this mode the user can stroke the valve by changing the position on the Manual Control page.

  • Page 53: Figure 4-18. Canopen Position Control

    GS6 Gas Metering System CANopen/DeviceNet Position Control Setpoint Source CANopen Position Control in the Selected Input Type settings indicates the GS6 is configured for CANopen operation. The CANopen Position Control screen displays the Selected Input Type, Set Position Source, CAN Open Diagnostics, Analog Set Position, CAN Open Parameters, Position Controller, Position Feedback and Position Controller Diagnostics (Figure 4-18).

  • Page 54: Figure 4-19. Function Generator Position Control

    Function Generator Position Control Setpoint Source The GS6 can be configured to operate in Function Generator Position Control Mode. The Function Generator Position Control screen displays the Selected Input Type, Set Position Source, Function Generator Settings, Position Controller, Position Feedback and Position Controller Diagnostics (Figure 4- 19).

  • Page 55: Actuator Calibration

    Actuator Calibration The GS6 product is manufacture configured to a single or dual resolver depends on the application. The VPC actuator calibration page of the VPC Service Tool provides an overview of the actuator position. The single resolver actuator display is shown in Figure 4-20.

  • Page 56: Figure 4-20. Single Resolver Screen

    Difference Error Checking (Figure 4-21). Position Sensor 1 Scaling and Diagnostic Settings This indicator displays the GS6 resolver factory calibrated value in digital count. The resolver min and max count represent the GS6 actuator position 0–100% scale. Raw Position Sensor Data This section shows Position Sensor 1 and 2 resolver raw data.

  • Page 57: Output Configuration

    Figure 4-21. Dual Resolver Actuator Output Configuration The Output Configuration page displays the analog output configuration of the GS6 (Figure 4-22). The output page provides two output modes: the Discrete Output state and the Analog Output Settings. These outputs can be configured for shutdown, internal shutdown or not shutdown. The analog output scaling is configurable through the VPC Edit Settings tool (See Settings Editor Tool Section) Figure 4-22.

  • Page 58: Settings Editor Tool

    GS6 Gas Metering System Settings Editor Tool The VPC Service Tool is designed within the Woodward Toolkit that allows the user to configure the GS6 *.wset file to fit the preferred application. In the Toolkit settings utilities it provides many options for the user to create, edit and save *.wset file (Figure 4-23).

  • Page 59: Figure 4-25. Sid File Selector

    Released Manual 26513 GS6 Gas Metering System Another window will prompt for a Valve Settings or User Settings (Figure 4-25). Recommend using “User Settings” for field modification. Select OK to continue. Figure 4-25. SID File Selector The Settings Editor window will pop up for tool *.WSET file configuration. The available configurable options of the *.WSET are Input Type Selection, Input Modifications, Position Error/Resolvers, Output...

  • Page 60: Input Type Selection

    GS6 Gas Metering System Input Type Selection On a typical GS6 product, the valve is factory configured to Analog Position Control as default input type. This input type can be configured to meet the use’s need. The Input Type Selection includes Analog Position Control, Manual Position Control, CANopen Position Control, DeviceNet Position Control, Function Generator Position Control (Figure 4-27).

  • Page 61: Figure 4-29. Manual Position Control

    The diagnostic ranges for the 4–20 mA input configuration are displayed in this section. The unit of the limit settings is milliamps (mA). Low limit is the minimum input current input that the GS6 considers as a valid input. Any the input signal drops below this limit, the software will trigger an error flag. A high limit is the maximum input current limitation on the high end.

  • Page 62: Figure 4-31. Devicenet Position Control

    DeviceNet is a non-proprietary CAN-layer protocol. The DeviceNet Input Configuration screen shows the configuration settings for DeviceNet Digital Input of the GS6. The DeviceNet protocol on the GS6 is set to operate in single mode with an analog input as backup (Figure 4-31). In this setting, the analog input can be configured as backup.

  • Page 63: Input Modification

    Released Manual 26513 GS6 Gas Metering System Function Generator Position Control Setup The function generator is an internal Position Control function that simulates the valve. The Function Generator Configuration screen shows the configuration settings in Figure 4-32. Figure 4-32. Function Generator Position Control...

  • Page 64: Position Error/Resolvers

    This function is ON/OFF selectable by using the Settings Editor Tool (Figure 4-34). An “OFF” option indicates that GS6 will not use the function. A pop-up configurable parameter menu populates on the screen when the “ON” option is selected. Time Between Pulses, Impulse Half Duration, Position Step Size are the parameters that can be modified using the Settings Editor Tool.

  • Page 65: Output Selections

    Released Manual 26513 GS6 Gas Metering System Dual Resolver Difference Diagnostics This field is used for Dual resolver GS6 and for Position Feedback Redundancy purpose. The mode of operation can be selected from the pull-down menu. Available options are: _Use_Max_Resolver...

  • Page 66: Alarm Shutdown Selections

    Save From Device to File This option is to save the current setting from the GS6 to a file on the PC. First, connect the VPC Service Tool to the GS6 by pressing the Connect button or selecting ‘Connect’ from the main toolbar. GS6 settings files can be created using the VPC Service Tool Settings Editor Wizard.
  • Page 67 Load Settings File to Device This option allows the user to down load the *.wset file to GS6. Connect the VPC Service Tool to the GS6 by pressing the connect button or selecting ‘Connect’ main tool bar. A new GS6 settings file can be loaded into GS6 driver by using the Settings Editor tool.
  • Page 68 Released Manual 26513 GS6 Gas Metering System Compare Settings File Difference This tool allows the user to two different *.wset files. The tool will return difference between the files in a report form. The actions described may not be appropriate for all situations. The...

  • Page 69: Chapter 5. Vpc Software Upgrade

    Chapter 5. VPC Software Upgrade This chapter addresses the options for upgrading the GS6 Software to the latest released version using the VPC Service Tool. The following procedure must be followed to upgrade the VPC to the latest software version.

  • Page 70: Figure 5-2. Connection Successful Channel Display

    5. If the part number of the software is different from the part numbers in step 4, do not update the software. Disconnect the Service Tool and contact Woodward, because the Service Tool will not be able to update the software, and the valve will be loaded with software but the conversion will fail, making it impossible for the valve to operate any more.

  • Page 71: Figure 5-4. Load Application Menu

    Released Manual 26513 GS6 Gas Metering System Figure 5-4. Load Application Menu Figure 5-5. Loading Application Safety Warning Select the file with the new application filename: VPC5418-3482.scpwapp, then click the Next button. Figure 5-6. Application File Selection Woodward...

  • Page 72: Figure 5-7. Restore Setting Option

    Released Manual 26513 GS6 Gas Metering System 9. Make sure you select “Restore the device’s current setting after loading the application” If you do not select this option, you will not be able to operate the valve any more after the software is loaded. Note that the first screen below is shown with the incorrect selection.

  • Page 73: Figure 5-9. Settings Editor

    Released Manual 26513 GS6 Gas Metering System Figure 5-9. Settings Editor 11. ProductPartNumber is the control part number on the outside of the valve (9907-661 in the example). 12. ProductRev—The “Rev” is New if no other letter is present. 13. ProductIdentification.ProductSerailNr—Add the serial number if not found.

  • Page 74: Figure 5-11. Settings Conversion Successful

    Released Manual 26513 GS6 Gas Metering System Figure 5-11. Settings Conversion Successful 16. The converted setting will be loaded into the control. Wait until all settings are saved. The last screen will show the message “Application loaded successfully”. Click Close.

  • Page 75: Figure 5-13. Loading Application With File Information

    Released Manual 26513 GS6 Gas Metering System Figure 5-13. Loading Application with File Information Figure 5-14. Application Loading Successfully Finished 17. Cycle power on the valve. 18. Connect to the valve by clicking the Connect button—you must see the new application ID and serial number you have supplied.

  • Page 76: Figure 5-16. Manual Control Screen

    Released Manual 26513 GS6 Gas Metering System Figure 5-16. Manual Control Screen 19. To validate the new Application ID and Serial Number you have supplied, go to the “Manual Control” screen, where you can see the part number, serial number, and revision.

  • Page 77: Figure 5-18. Valve Identification Verification

    Released Manual 26513 GS6 Gas Metering System 20. Verify the Valve Identification. Figure 5-18. Valve Identification Verification When re-installing the electrical enclosure cover, tighten to 50 ±3 Nm (37 ±2 lb-ft). Woodward...

  • Page 78: Chapter 6. Valve Sizing

    Released Manual 26513 GS6 Gas Metering System Chapter 6. Valve Sizing Standard Valve Flow Calculations Determination of Effective Area In order to choose the proper size of valve for an application, the effective area required to meet the maximum flow requirement must first be determined. The effective area is determined using the following equations.

  • Page 79: Figure 6-1. Metering Port Size

    Released Manual 26513 GS6 Gas Metering System Determination of Metering Port Size Once the effective area has been determined and 10% margin has been added, determine the correct metering port size using the following graph. Only the 0.75 port is available in the Dual Resolver version.

  • Page 80: Chapter 7. Troubleshooting

    Released Manual 26513 GS6 Gas Metering System Chapter 7. Troubleshooting For troubleshooting using the VPC Service Tool, reference Figure 4-2 “Valve Overview Status”. Find other troubleshooting methods using the VPC Service Tool in the Help section of the service tool.
  • Page 81 Released Manual 26513 GS6 Gas Metering System Possible Reason Explanation Action Resolver Difference Error The difference between Resolver 1 and Check wiring in the valve. Replace valve 1 (Dual Resolver Only) Resolver 2 is greater than the configured limit for Resolver Difference Error 1.

  • Page 82: Figure 7-1. Troubleshooting Flowchart

    Released Manual 26513 GS6 Gas Metering System Figure 7-1. Troubleshooting Flowchart Woodward...

  • Page 83: Chapter 8. Maintenance

    Chapter 8. Maintenance No maintenance is required for the GS6 valve; however, periodic cleaning may be performed. A petrochemical solvent is recommended to clean (wash and brush) the valve. High-pressure power washing is not recommended. When cleaning the metering element and the inside of the valve body, do not use sharp objects that may scrape or dent the metering element, as this could degrade the accuracy of the valve.
  • Page 84 Released Manual 26513 GS6 Gas Metering System COVER—Take care not to damage the threads when removing or replacing the cover. Damage to these threads may result in moisture ingress, fire, or explosion. Clean the surface with rubbing alcohol if necessary. Inspect the threads to ensure that they are not damaged or contaminated.

  • Page 85: Chapter 9. Product Support And Service Options

    Service Distributor or the OEM or Packager of the equipment system, based on the standard Woodward Product and Service Warranty (Woodward North American Terms and Conditions of Sale 5-09-0690) that is in effect at the time the product is originally shipped from Woodward or a service is performed: •...

  • Page 86: Returning Equipment For Repair

    All repair work carries the standard Woodward service warranty (Woodward North American Terms and Conditions of Sale 5-09-0690) on replaced parts and labor.

  • Page 87: Replacement Parts

    • The unit serial number, which is also on the nameplate Engineering Services Woodward offers various Engineering Services for our products. For these services, you can contact us by telephone, by email, or through the Woodward website. • Technical Support •...

  • Page 88: Technical Assistance

    GS6 Gas Metering System Technical Assistance If you need to contact technical assistance, you will need to provide the following information. Please write it down here before contacting the Engine OEM, the Packager, a Woodward Business Partner, or the Woodward factory: General...

  • Page 89: Technical Specifications

    Released Manual 26513 GS6 Gas Metering System Technical Specifications Electrical Characteristics Input voltage range: 18–32 VDC Normal input current 0.2 to 2 A range(steady-state, maximum): Maximum continuous input current: Maximum transient input 7 A (12A for GS6FS) current: Mechanical Characteristics 96.8 mm²...
  • Page 90 Released Manual 26513 GS6 Gas Metering System Flow Characteristics The accuracy of the port scheduling is better than 5% of point or 2% of full scale flow rate from a nominal calibration schedule at room Analog Accuracy: temperature, whichever is the most stringent at any point in the flow schedule from 2% to 100% of full scale flow rate.

  • Page 91: Revision History

    Released Manual 26513 GS6 Gas Metering System Revision History Changes in Revision AA— • Replaced DoC Changes in Revision Y— • Added GS definitions and Chinese translations to the Regulatory Compliance section • Added Installation Instructions Requirement page Changes in Revision W—...
  • Page 92 Released Manual 26513 GS6 Gas Metering System • Added power wiring recommendation (page 10) • Updated Regulatory Compliance information • Updated Declaration of Conformity Changes in Revision G— • Added warnings to correctly torque the cover per ATEX directive Woodward...

  • Page 93: Declarations

    Released Manual 26513 GS6 Gas Metering System Declarations Woodward...
  • Page 94 Released Manual 26513 GS6 Gas Metering System Woodward...
  • Page 95 Released Manual 26513 GS6 Gas Metering System Woodward...
  • Page 96 Released Manual 26513 GS6 Gas Metering System Woodward...
  • Page 97 Released Manual 26513 GS6 Gas Metering System Woodward...
  • Page 98 Email and Website—www.woodward.com Woodward has company-owned plants, subsidiaries, and branches, as well as authorized distributors and other authorized service and sales facilities throughout the world. Complete address / phone / fax / email information for all locations is available on our website.

Table of Contents