Woodward 2301D-ST Product Manual
  1. Manuals
  2. Brands
  3. Woodward Manuals
  4. Industrial Equipment
  5. 2301D-ST
  6. Product manual
Woodward 2301D-ST Product Manual

Woodward 2301D-ST Product Manual

Digital electronic load sharing & speed control for small steam turbines
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Product Manual 26184
(Revision G)
Original Instructions
2301D-ST Digital Electronic Load Sharing
& Speed Control for Small Steam Turbines
8273-128—Normal Mounting Location
8273-1001—Hazardous Mounting Location
Installation and Operation Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 2301D-ST and is the answer not in the manual?

Questions and answers

Related Manuals for Woodward 2301D-ST

Summary of Contents for Woodward 2301D-ST

  • Page 1 Product Manual 26184 (Revision G) Original Instructions 2301D-ST Digital Electronic Load Sharing & Speed Control for Small Steam Turbines 8273-128—Normal Mounting Location 8273-1001—Hazardous Mounting Location Installation and Operation Manual...
  • Page 2 Revisions—Changes in this publication since the last revision are indicated by a black line alongside the text. 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

    ONFIGURATION ROCEDURES Introduction ......................22   Watch Window Program ..................22   Configure Menu Descriptions ................27   Save and Reset 2301D-ST Control..............36   Service Menu Descriptions ................... 36   4. D ..........70  HAPTER ESCRIPTION OF PERATION 5.
  • Page 4 Figure 2-1. 2301D-ST Outline Drawing (8273-128) ..........5   Figure 2-2. 2301D-ST Outline Drawing (8273-1001) ..........6   Figure 2-3a. 2301D-ST Plant Wiring Diagram (sheet 1) ........7   Figure 2-3b. 2301D-ST Plant Wiring Diagram (sheet 2) ........8  ...
  • Page 5 Manual 26184 2301D-ST Illustrations and Tables Figure 3-15. Service: C** SHUTDOWN ** Menu..........39   Figure 3-16. Service: D** ALARM ** Menu ............40   Figure 3-17. Service: E** SPEED DYNAMICS ** Menu ........42   Figure 3-18. Control Gain as a Function of Speed Error ........43  ...

  • Page 6: Warnings And Notices

    Start-up On- and off-highway Mobile Applications: Unless Woodward's control functions as the supervisory control, customer should install a system totally independent of the prime mover control system that...

  • 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 , Guide for Handling and Protection of Electronic Controls, 82715 Printed Circuit Boards, and Modules.

  • Page 8: Regulatory Compliance

    2301D-ST Manual 26184 Regulatory Compliance European Compliance for CE Mark These listings are limited only to those units bearing the CE Marking. EMC Directive: Declared to 89/336/EEC COUNCIL DIRECTIVE of 03 May 1989 on the approximation of the laws of the member states relating to electromagnetic compatibility.

  • Page 9: Chapter 1. General Information

    With more I/O than its predecessor (the 2301A LSSC), the 2301D-ST also has serial communications, allowing it to easily interface with a Human Machine Interface (HMI), PLC or plant DCS. The 2301D-ST is configured and serviced (dynamic adjustments made) via a laptop computer connected to the control’s...

  • Page 10: Applications

    2301D-ST Manual 26184 Applications The 2301D-ST is a field-configurable control designed to perform the basic speed and load control functions for single-valve steam turbines. It can be configured to allow a user to match the control’s functionality to the application.

  • Page 11: References

    Magnetic Pickups and Proximity Switches for Electronic Governors 82715 Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules Product Spec Title 03297 2301D-ST Digital Load Sharing and Speed Control 82383 SPM-A Synchronizer 82516 EG3P/6P/10P Actuator 82575 EGB1P/2P Governor/Actuator 03202...

  • Page 12: Chapter 2. Installation

    Chapter 2. Installation Introduction This chapter contains general installation instructions for the 2301D-ST control. Power requirements, environmental precautions and location considerations are included to determine the best location for the control. Additional information includes unpacking instructions, electrical connections and an installation check- out procedure.

  • Page 13: Figure 2-1. 2301D-St Outline Drawing (8273-128)

    Manual 26184 2301D-ST 2301D−ST Figure 2-1. 2301D-ST Outline Drawing (8273-128) Woodward...

  • Page 14: Figure 2-2. 2301D-St Outline Drawing (8273-1001)

    2301D-ST Manual 26184 Figure 2-2. 2301D-ST Outline Drawing (8273-1001) (Hazardous Locations, external cover installed) Woodward...

  • Page 15: Figure 2-3A. 2301D-St Plant Wiring Diagram (Sheet 1)

    Manual 26184 2301D-ST ( 0 - 20 mA, 4 - 20 mA, 0 - 200 mA, 20 - 200 mA ) Figure 2-3a. 2301D-ST Plant Wiring Diagram (sheet 1) Woodward...

  • Page 16: Figure 2-3B. 2301D-St Plant Wiring Diagram (Sheet 2)

    DISCRETE INPUTS WITH EXTERNAL POWER SUPPLY NOT USED WHEN USING EXTERNAL POWER SUPPLY 18-40 Vdc EXTERNAL POWER SUPPLY INPUT (100mA MAX AT 24 Vdc) RUN / SHUTDOWN START / UNLOAD DISCRETE INPUTS Figure 2-3b. 2301D-ST Plant Wiring Diagram (sheet 2) Woodward...

  • Page 17: Electrical Connections

    SHOULD NOT BE FLOATED IN EITHER AN ON OR OFF STATE. THESE INPUTS SHOULD BE SWITCHED TO EITHER 24 VDC OR GROUND. THIS ANALOG OUTPUT IS CONFIGURABLE. THESE ANALOG INPUTS ARE CONFIGURABLE. Figure 2-3c. 2301D-ST Plant Wiring Diagram (notes) Electrical Connections Due to the hazardous location listings associated with this product, proper wire type and wiring practices are critical to operation.

  • Page 18: Shields And Grounding

    (exception, see note below on cabinet installations). Shields can be grounded at both ends (2301D-ST and load) if the cable length is sufficiently short (within a cabinet) to prevent ground loop current in the shield.

  • Page 19: Power Supply Connections

    2301D-ST Power Supply Connections The 2301D-ST requires a voltage source of 18 to 40 Vdc, with a current capacity of at least 900 mA for operating power. If a battery is used for operating power, an alternator or other battery charging device is necessary to maintain a stable supply voltage.
  • Page 20 Each contact input pulls 3 mA when closed and requires at least 14 Vdc to recognize a closure command. See Figure 2-3 for wiring information and 2301D-ST Control Specification for input specifications. A positive voltage on any discrete input terminal is sensed by the control as a closed contact or “TRUE”...
  • Page 21 Manual 26184 2301D-ST The turbine can also be re-started as the turbine is coasting down in speed. There are two ways to start the turbine in this manner: 1. The first method: a. While the turbine is coasting down in speed, the Run / Stop contact must be closed to the Run position and the Start contact must be in the Start position.
  • Page 22 2301D-ST Manual 26184 Contact Inputs (Terminal 36–38) The 2301D-ST has three other discrete input channels that are available for use. These contacts are configurable and can be programmed to perform one of the following functions:  IDLE - RATED SPEED When the state of this contact is open the speed reference moves toward the programmed IDLE speed setpoint at it’s own configured rate set in...

  • Page 23: Actuator Output

    Manual 26184 2301D-ST  PROCESS CONTROL ENABLE This contact is used to enable the process control logic when closed. In order for process control to work correctly an external 4–20 mA signal needs to be setup on one of the analog inputs to provide feedback for the process PID.
  • Page 24 2301D-ST Manual 26184 Relay Driver Outputs (Terminals 41–44) The 2301D-ST has four discrete output driver channels. Terminals 41, 42, 43, and 44 are configurable and can be programmed to perform one of the following functions:  SHUTDOWN  ALARM ...
  • Page 25 Manual 26184 2301D-ST 5. SPEED PID IN CONTROL Each relay driver can programmed to indicate the speed PID controls the actuator/valve. 6. MODBUS CONTROLLED RELAY #1 Each relay driver can be programmed to indicate the Modbus controlled relay #1 according to the following function.

  • Page 26: Communication Port

    Modbus RTU or ASCII protocol, functioning as a Modbus Slave device, via RS-232 or RS-422 drivers, depending on the configuration. The 2301D-ST can be fully operated and all control values monitored via Modbus communications. Alternatively Modbus communications can be used to interface with a PLC or plant DCS.

  • Page 27: Figure 2-6. Typical Rs422 Communications Connections

    Manual 26184 2301D-ST RS-422 See Figure 2-6 for termination and cable connection example. Figure 2-6. Typical RS422 Communications Connections Termination For RS-422, termination should be located at the receiver when one or more transmitters are connected to a single receiver. When a single transmitter is connected to one or more receiver, termination should be at the receiver farthest from the transmitter.

  • Page 28: Figure 2-8. Preferred Multipoint Wiring Using Shielded Twisted-Pair Cable With A Separate Signal Ground Wire

    2301D-ST Manual 26184 Non-isolated nodes may not have a signal ground available. If signal ground is not available, use the alternate wiring scheme in Figure 2-9 with the signal ground connection removed on those nodes only. Figure 2-8. Preferred Multipoint Wiring Using Shielded Twisted-pair Cable with a...

  • Page 29: Installation Check-Out Procedure

    Manual 26184 2301D-ST Installation Check-out Procedure Once the 2301D-ST is installed, perform the following checkout procedure before beginning the start-up adjustments in Chapter 4. Visual Inspection Check the linkage between the actuator and the valve on the steam turbine for looseness or binding. Refer to the appropriate actuator manual and to manual 25070, Electronic Control Installation Guide, for additional information on linkage.

  • Page 30: Chapter 3. Service And Configuration Procedures

    Introduction This chapter contains information on control configurations, setting adjustments and the use of Woodward’s Watch Window software tool. Because of the variety of installations, system and component tolerances, the 2301D-ST must be tuned and configured for each system to obtain optimum performance. Refer to Chapter 4 for start-up settings, adjustments and instructions.
  • Page 31 If an application configuration has been previously saved to a *.CFG file, the saved set of parameters can be loaded into the 2301D-ST as a group by selecting the Load Application Settings icon.

  • Page 32: Figure 3-1.Basic Configuration Procedures

    2301D-ST Manual 26184 Start Configuration Install the Watch Window Software to generic PC Connect PC and 2301D-ST control using RS-232 Serial Cable Apply power for 2301D-ST 2301D-ST Self Test, 30s (Status LED is turned off) Start "ServLink" Start "Watch Window"...

  • Page 33: Figure 3-2. Connection Between Pc And 2301D-St

    Connect PC to 2301D-ST The connection of a computer is only required for calibration and setup of the 2301D-ST on a prime mover as shown in Figure 3-2 below. The computer and Watch Window software program are not required or necessary for normal operation of the control.

  • Page 34: Figure 3-3. Setup Servlink Communication

    To create a network definition file: 1. Open the Watch Window program’s associated Servlink server by Clicking on Start > Programs > Woodward > Servlink Server.exe 2. Select the communications port the control is connected to 3. Select “Point-to-Point” communications 4.

  • Page 35: Configure Menu Descriptions

    Figure 3-5. Watch Window Menu and Explore (Configure) Configure Menu Descriptions The 2301D-ST has “5” Configure menus and “21” Service menus to simplify and protect control settings and their adjustments. All menus appear as pages, are arranged alphabetically and can be located by using the inspector’s arrow buttons located above the pages to scroll to the desired menu.

  • Page 36: Figure 3-6. Configure: A**Spd, Load, Strt Options** Menu

    2301D-ST Manual 26184 Once the configuration changes have been completed click on the Reset icon to allow the control to store the configured parameters, return the outputs to their active state and resume executing the application software. CONFIGURE: A**SPD, LOAD, STRT OPTIONS** Figure 3-6.
  • Page 37 Manual 26184 2301D-ST 04 MPU MIN SPD LEVEL (RPM) dflt= 250.0 (0.0, 2000) Enter the minimum detectable speed level for the control. Below this level the MPU would be detected as failed and a trip will be issued. The MPU input signal must be at least 1.0 Vrms at the minimum speed level programmed.

  • Page 38: Figure 3-8. Configure: B**Discrete In Options** Menu

    2301D-ST Manual 26184 10 GEAR RATIO dflt=1.0 (0.1, 10) Enter the result of the (MPU gear speed) / (turbine shaft speed) speed ratio. This value is used to determine the internal hertz-to-rpm relationship and is calculated by dividing the speed of the MPU gear by the speed of the turbine shaft.
  • Page 39 Manual 26184 2301D-ST 01 CONFIGURATION ERROR? dflt=FALSE (FALSE, TRUE) This value will show TRUE if you have selected two discrete inputs to perform the same function. This value should never be true in normal operation. 02 SEL DI F FUNCTION (1-7) dflt=1 (1, 7) Select one of the following parameters for Discrete Input F at terminal 36.

  • Page 40: Figure 3-9. Configure: C**Discrete Out Options** Menu

    Manual 26184 CONFIGURE: C**DISCRETE OUT OPTIONS** Figure 3-9. Configure: C**DISCRETE OUT OPTIONS** Menu The 2301D-ST has four discrete output driver channels. Terminals 41, 42, 43 and 44 are configurable and can be programmed to perform one of several functions (listed below).
  • Page 41 Manual 26184 2301D-ST 05 RELAY 2 ENERGIZES (1-11) dflt=1 (1, 11) Select one of the following parameters for discrete output at terminals 42. 1=NOT USED 2=SHUTDOWN 3=ALARM 4=ELEC. OVERSPEED TRIP TEST 5=VALVE LIMITER IN CONTROL 6=SPEED PID IN CONTROL 7=MODBUS CONTROLLED RELAY #1...

  • Page 42: Figure 3-10. Configure: D**Analog Input Options** Menu

    2301D-ST Manual 26184 CONFIGURE: D**ANALOG INPUT OPTIONS** Figure 3-10. Configure: D**ANALOG INPUT OPTIONS** Menu 01 CONFIGURATION ERROR? dflt=FALSE (FALSE, TRUE) Displays a TRUE if any of the two analog inputs are set the same. Not Used and Monitor Signal Input can be set the same. Displays a FALSE if the analog input configuration is correct.

  • Page 43: Figure 3-11. Configure: E**Actuator Out Options** Menu

    Manual 26184 2301D-ST 07 SEL AI #2 FUNCTION (1-6) dflt=1 (1, 6) Select one of the following parameters for Analog Input #2 at terminal 22-23. 1=NOT USED 2=REMOTE SPEED SETPOINT 3=MONITOR SIGNAL INPUT 4=SYNCHRONIZER BIAS SIGNAL 5=REMOTE PROCESS SETPOINT 6=PROCESS SIGNAL 08 DISPLAY AI #2 FUNCTION Displays the function selected for Analog Input #2.

  • Page 44: Save And Reset 2301D-St Control

    (reverse acting actuators should always incorporate a mechanical ballhead backup governor). Save and Reset 2301D-ST Control. When the tuning or setting of parameters is complete, the values must be saved in the control’s non-volatile memory. Go to the Tool Bar and click the PROM icon for Save Values.

  • Page 45: Figure 3-13. Service: A** Display Analog Info ** Menu

    Manual 26184 2301D-ST A** DISPLAY ANALOG INFO ** Figure 3-13. Service: A** DISPLAY ANALOG INFO ** Menu This is a display group for general monitoring of the turbine. 01 SPEED CONTROL STATUS displays the status of the speed control. Will...

  • Page 46: Figure 3-14. Service: B** Display Load Info ** Menu

    2301D-ST Manual 26184 04 SPEED REFERENCE (RPM) displays turbine speed setpoint in rpm. 05 ACTUATOR SIGNAL (%) displays actuator demand percentage (0-100%). 06 ACTUATOR CURRENT (mA) displays the current output to the actuator in milliamps. 07 VALVE LIMITER (%) displays the valve limiter demand percentage (0-100%).

  • Page 47: Figure 3-15. Service: C** Shutdown ** Menu

    ANALOG INPUT #2 FAIL (if configured as such) MODBUS ISSUED TRIP TEST MODE EXTERNAL SHUTDOWN 03 POWER UP SHUTDOWN (1) displays the status of power up shutdown. Shutdown is detected when the power supply to the 2301D-ST is turned off. Woodward...

  • Page 48: Figure 3-16. Service: D** Alarm ** Menu

    2301D-ST Manual 26184 04 OVERSPEED (2) displays the status of overspeed trip. Shutdown is detected when the turbine reaches an overspeed. 05 MPU FAIL (3) displays the status of MPU fail. Shutdown is detected if the MPU fails. 06 ANALOG INPUT #1 FAIL (4) displays the status of Analog Input #1 (if configured).
  • Page 49 Manual 26184 2301D-ST This menu displays the status of the alarm modes. 01 ALARM STATUS gives the existing alarm conditions. If control has alarms, it displays TRUE. If no alarms exist, it displays FALSE. 02 FIRST ALARM displays the cause of the first alarm. If the control has an...

  • Page 50: Figure 3-17. Service: E** Speed Dynamics ** Menu

    2301D-ST Manual 26184 E** SPEED DYNAMICS ** Figure 3-17. Service: E** SPEED DYNAMICS ** Menu This menu gives the operator the ability to tune the dynamic adjustments. Dynamic adjustments are settings that affect the stability and transient performance of the turbine. There are two sets of dynamics provided. The 52G GENERATOR BREAKER contact input selects the Dynamics being used for control.

  • Page 51: Figure 3-18. Control Gain As A Function Of Speed Error

    Manual 26184 2301D-ST 04 OFF LINE WINDOW WIDTH 1 (RPM) dflt=60.0 (1.00, 200.0) The magnitude (in rpm) of speed error at which the control automatically switches to fast response. The control uses the absolute value of speed error to make this switch. The absolute value is the difference between the speed reference and the speed.

  • Page 52: Figure 3-19. Typical Transient Response Curves

    2301D-ST Manual 26184 Figure 3-19. Typical Transient Response Curves Woodward...
  • Page 53 Manual 26184 2301D-ST 08 ON LINE INT GAIN dflt=1.8 (0.01, 50.0) Compensates for the lag time of the turbine. It adjusts the time required for the control to return the speed to zero error after a disturbance. The Integral Gain is adjusted to prevent slow hunting and to minimize speed overshoot after a load disturbance in a loaded condition.

  • Page 54: Figure 3-20. Service: F** Remote Speed Control** Menu

    2301D-ST Manual 26184 F** REMOTE SPEED CONTROL ** Figure 3-20. Service: F** REMOTE SPEED CONTROL** Menu THIS MENU IS USED FOR THE REMOTE SPEED CONTROL LOGIC. The operation of two kinds of remote speed setting is possible for the control. One is the control by the analog input.

  • Page 55: Figure 3-21. Service: G** Speed Setting ** Menu

    Manual 26184 2301D-ST G** SPEED SETTING ** Figure 3-21. Service: G** SPEED SETTING ** Menu OVERSPEED ZERO RATED IDLE SPEED TEST SPEED LIMIT CRITICAL SPEED ELECTRICAL BAND OVERSPEED TRIP LEVEL OPERATING RANGE MINIMUM MAXIMUM GOVERNOR GOVERNOR Figure 3-22. Speed Relationships This menu is used for setting up the speed set points of the turbine.
  • Page 56 2301D-ST Manual 26184 04 MIN GOV SETPOINT (RPM) dflt=3550.0 (0.0, 32000) Enter the minimum governor speed setting. This is the normal operation lower limit. (Must be greater then or equal to the IDLE SPEED SETPOINT and less than or equal to the RATED SPEED SETPOINT).

  • Page 57: Figure 3-23. Service: H** Process Control ** Menu

    Manual 26184 2301D-ST H** PROCESS CONTROL ** Figure 3-23. Service: H** PROCESS CONTROL ** Menu THIS MENU IS USED FOR THE PROCESS CONTROL OF THE TURBINE. 01 PROCESS CONTROL ENABLED Displays the state of the process control. TRUE means the Process Control is enabled, FALSE means it is disabled.
  • Page 58 2301D-ST Manual 26184 05 MAX PROC SETPT (UNITS) dflt=0.0 (-20000.0, 20000.0) This value is the maximum setpoint value that the process setpoint can be increased/raised to (upper limit of process setpoint). This value should set to the same value as the INPUT#X MAX VALUE (UNITS) under the Configure menu D**ANALOG INPUT OPTIONS**.

  • Page 59: Figure 3-24. Service: I** Overspeed Test ** Menu

    Manual 26184 2301D-ST 18 ANALOG INPUT #2 Displays the input of analog input #2. 19 PROCESS SETPOINT (UNITS) Displays the process setpoint in engineering units. 20 PROCESS ACTUAL (UNITS) Displays the process control variable in engineering units. I** OVERSPEED TEST ** Figure 3-24.

  • Page 60: Figure 3-25. Service: J** Failed Mpu Override** Menu

    2301D-ST Manual 26184 06 SPEED REF (RPM) displays turbine speed setpoint in rpm. J** FAILED MPU OVERRIDE ** Figure 3-25. Service: J** FAILED MPU OVERRIDE** Menu THIS MENU IS USED FOR SETTING THE MPU OVERRIDE LOGIC. 01 AUTO-OVRD OFF SPEED dflt=450.0 (0.0, 2000.0)

  • Page 61: Figure 3-26. Service: K** Synchronizer Setup** Menu

    Manual 26184 2301D-ST K** SYNCHRONIZER SETUP ** Figure 3-26. Service: K** SYNCHRONIZER SETUP** Menu THIS MENU IS USED TO SETUP THE SYNCHRONIZER LOGIC. 01 ENBL SYNC INPUT displays whether the sync input is being used. If it is TRUE, the SYNC INPUT can be used.
  • Page 62 2301D-ST Manual 26184 01 ENABLE MANUAL CNTRL RAMP dflt=FALSE (FALSE,TRUE) Set this value to TRUE to manually control the valve ramp. MANUAL CNTRL RAMP SETPNT is used manually lower the ramp. This value is low signal selected (LSS) with the turbine speed control. If manually lowered below the speed control PID value, the valve ramp will take control.

  • Page 63: Figure 3-28. Service: M** Load Sensor And Droop ** Menu

    Manual 26184 2301D-ST M** LOAD SENSOR AND DROOP ** Figure 3-28. Service: M** LOAD SENSOR AND DROOP ** Menu THIS MENU IS USED TO SET UP THE GENERATOR LOAD CONTROL PARAMETERS. 01 USE LOAD SENSOR? dflt=FALSE (FALSE, TRUE) Set to TRUE to use the built in generator load sensor for generator applications or FALSE when using control for pump, blower, or compressor applications.
  • Page 64 2301D-ST Manual 26184 06 ACT % @ FULL LD (POS DRP) dflt=80.0 (0.0, 100.0) This value is the percentage of actuator output used to calibrate the actuator position droop feedback at full load. If actuator position feedback droop is used, this value must match the actuator output position at full load.

  • Page 65: Figure 3-29. Service: N** Act Linearization ** Menu

    Manual 26184 2301D-ST N** ACT LINEARIZATION ** Figure 3-29. Service: N** ACT LINEARIZATION ** Menu THIS MENU IS USED TO LINEARIZE THE ACTUATOR / VALVE. 01 X-1 VALUE dflt=0.0 (-10.0,110.0) Input point #1 of actuator linearization curve, in percentage. (Must be less than the ‘X-2 Value’) 02 Y-1 VALUE dflt=0.0 (-10.0,110.0)
  • Page 66 2301D-ST Manual 26184 07 X-4 VALUE dflt=30.0 (-10.0,110.0) Input point #4 of actuator linearization curve, in percentage. (Must be less than the ‘X-5 Value’) 08 Y-4 VALUE dflt=30.0 (-10.0,110.0) Output point #4 of actuator linearization curve, in percentage. 09 X-5 VALUE dflt=40.0 (-10.0,110.0)

  • Page 67: Figure 3-30. Service: O** Actuator Calibration ** Menu

    Adjust the valve’s output current for a maximum stop. 06 ACTUATOR DITHER (MA) dflt=0.0 (0.0, 10.0) Enter the dither, in milliamps. Enter 0.0 if no dither is required. Woodward TM- type actuators typically require dither. 07 ACTUATOR OUT (MA) displays the actuator output, in milliamps.

  • Page 68: Figure 3-31. Service: P** Analog I/O Settings ** Menu

    2301D-ST Manual 26184 P** ANALOG I/O SETTINGS ** Figure 3-31. Service: P** ANALOG I/O SETTINGS ** Menu This section calibrates the analog inputs and selects the parameter to be sent to the analog output driver and the desired scaling of the output.
  • Page 69 Manual 26184 2301D-ST 07 INPUT #1 MAX VALUE (UNIT) dflt=100.0 (-32000.0, 32000.0) Set the value (in engineering units) that corresponds to the maximum range on Analog Input #2. When setting the Min and Max Values for Analog Input #1 or #2, the following equation must be followed: [(Max Value) –...

  • Page 70: Figure 3-32. Service: Q** Discrete Out Settings ** Menu

    Q** DISCRETE OUT SETTINGS ** Figure 3-32. Service: Q** DISCRETE OUT SETTINGS ** Menu The 2301D-ST has four discrete output driver channels. Terminals 41, 42, 43 and 44 are configurable and can be programmed to perform one of the following functions.
  • Page 71 Manual 26184 2301D-ST 04 RELAY 1 ON LEVEL dflt=0.0 (-32000.0, 32000.0) Enter the level switch ON setting in engineering units. There is an ON and an OFF setting for each level switch option. This allows the user to program the desired hysteresis for the function selected.
  • Page 72 2301D-ST Manual 26184 15 RELAY 3 OFF LEVEL dflt=0.0 (-32000.0, 32000.0) Enter the level switch OFF setting in engineering units. (Must be less than the ‘Relay On Level’) 16 RELAY 4 SELECTED AS displays the function selected for terminal 44. This...

  • Page 73: Figure 3-33. Service: R** Display D_I/O Status ** Menu

    Manual 26184 2301D-ST R** DISPLAY D_I/O STATUS ** Figure 3-33. Service: R** DISPLAY D_I/O STATUS ** Menu This section has no adjustments to set, it is used only for display status of discrete inputs and the status of the discrete outputs.

  • Page 74: Figure 3-34. Service: S** Hardware Output Test ** Menu

    2301D-ST Manual 26184 S** HARDWARE OUTPUT TEST ** Figure 3-34. Service: S** HARDWARE OUTPUT TEST ** Menu This section allows the operator to test the analog output and the relay driver outputs by artificially forcing the signals. This test can only be performed in the shutdown state.

  • Page 75: Figure 3-35. Service: T** Comm Port (Modbus) ** Menu

    Manual 26184 2301D-ST 07 TURN ON DO-1 dflt=FALSE (FALSE, TRUE) Set to TRUE to turn ON the relay driver output #1. If test is finished, it should set to FALSE. 08 DISCRETE OUTPUT #1 displays the state of discrete output #1.
  • Page 76 ILLEGAL Amount of data requested from slave was too large for slave to DATA VALUE return in a single response. Woodward maximum is 118 registers. The following are displayed only. CHECKSUM Error in the checksum. Can indicate link quality and/or noise ERROR problems.

  • Page 77: Figure 3-36. Service: U** Application Info ** Menu

    Manual 26184 2301D-ST 10 STOP BITS ARE SET FOR Shows the selected stop bits setting. 11 PARITY dflt=1 (1, 3) Set the Parity input defines protocol for the parity. If you selected 8 data bits select '1' for none. 1=OFF (none)

  • Page 78: Chapter 4. Description Of Operation

    Manual 26184 Chapter 4. Description of Operation This chapter provides an overview of the features and operation of the 2301D-ST Load Sharing and Speed Control. The 2301D-ST Load Sharing and Speed Control uses a 32 bit microprocessor for all control functions. All control adjustments are made with an external computer that communicates with the control via a serial port.

  • Page 79: Figure 4-1. Basic Operational Architecture

    Manual 26184 2301D-ST A P P LY P O W E R S E LF TE S T R U N 2301D -S T S TA R T W atch W indow C oinfigure M ode? O P E N "C onfigure" M enu O P E N "S ervice"...

  • Page 80: Figure 4-2. Automatic Start-Up

    To continue the ramp, manually close the Speed Raise Contact. If for some reason the turbine shuts down, due to a 2301D-ST shutdown, and the Run and Start contact inputs are closed, a toggle on the Reset contact will initiate the start sequence.

  • Page 81: Figure 4-3 Semi-Automatic Start-Up

    Manual 26184 2301D-ST Semi-automatic Start. The Speed Reference will increase up to the rated speed reference after the Start Command is issued. The valve reference and actuator demand are controlled by the raise / lower contact inputs. Figure 4-3 is an example of a semiautomatic start sequence.

  • Page 82: Figure 4-4 Manual Start-Up

    2301D-ST Manual 26184 Manual Start The Speed Reference will increase up to the rated speed reference after the Start Command is issued. The speed of the turbine is controlled by the trip and throttle valve or control valve until turbine speed reaches speed reference.
  • Page 83 2 mA or greater the 22 mA, the control will shut down. Over Speed Test The 2301D-ST’s Over Speed test Function allows an operator to increase Function turbine speed above its rated operating range to periodically test turbine electrical and/or mechanical over speed protection logic and circuitry.

  • Page 84: Figure 4-5. Critical Speed Avoidance Band

    KW Droop / Actuator KW Droop or Actuator Position Droop mode. Position Droop The 2301D-ST should be connected to the generator through the internal Operation load sensor using the PT’s and CT’s. When using the optional 52G BREAKER discrete input is open, Droop will be the control mode. In the Droop mode, the load sensor provides feedback to the speed control to decrease the speed reference based on load.
  • Page 85 Manual 26184 2301D-ST Process Control Process Control The process control can be configured to control any system process, related to or affected by turbine speed or load. Typically this controller is used as a turbine inlet or exhaust pressure controller. The process control is a PID controller that compares a 4–20 mA process signal with the...

  • Page 86: Figure 4-6. Paralleling System

    2301D-ST Manual 26184 2301D-ST LOAD VALVE DEM AND SPEED kW SENSOR M ATCHING REFERENCE CIRCUIT CIRCUIT INLET Turbine Generator LOAD SHARING LINE STEAM TURBINE CB AUX CONTACTS EXHAUST LOAD SIGNAL Figure 4-6. Paralleling System An auxiliary contact on the generator breaker connected to the discrete input is used to select speed and load control operation.

  • Page 87: Figure 4-7. Droop Mode

    Manual 26184 2301D-ST Figure 4-7. Droop Mode Droop is the speed reduction, expressed in percentage that occurs when the generator is fully loaded. With a given droop setting, a generator set will always produce the same power output at a particular speed or frequency.

  • Page 88: Figure 4-8. Isochronous Mode

    2301D-ST Manual 26184 Figure 4-8. Isochronous Mode Figure 4-9. Droop/Isochronous Figure 4-10. Isochronous Load Sharing Load Sharing Woodward...
  • Page 89 Manual 26184 2301D-ST Droop/Isochronous Droop/isochronous load sharing combines the first two modes. All Load Sharing on an generator sets in the system, except one, are operated in the droop mode. Isolated Bus The one unit not in droop is operated in the isochronous mode. It is known as the swing machine.

  • Page 90: Chapter 5. Pre-Start And Start-Up Procedures

    Pre-Start and Start-up Procedures Introduction This chapter provides an overview of the start-up procedures and operation of the 2301D-ST Load Sharing and Speed Control. Read this entire procedure before starting the prime mover. Start-up Adjustments Complete the Installation Procedure in Chapter 2 and the Service and Configuration Procedures in Chapter 3.

  • Page 91: Actuator Calibration

    Manual 26184 2301D-ST Actuator Calibration The actuator output from the control can be stroked (or calibrated) from the Service Menu O** ACTUATOR CALIBRATION **. Set TRUE the CALIBRATION ENABLE to calibrate the actuator or valve. Adjust 0% position related to the OFFSET, and 100% position related to the GAIN by moving the DUMMY SIGNAL.

  • Page 92: Speed Sensor Check

    2301D-ST Manual 26184 Speed Sensor Check Measure the voltage across terminals 25 and 26 to be sure there is a minimum of 1.0 Vrms at low limit speed and a maximum of 25 Vrms at rated speed. If the voltage exceeds 25 Vrms, increase the gap of the speed sensor and be sure that there is still a minimum of 1.0 Vrms at low limit speed.

  • Page 93: Phase Correction Procedure

    02 LOAD SENSOR INPUT (KW) Load Sensor calibration and monitoring. Since the kW calibration cannot be completed until the phasing is correct, the value shown is for reference only. The Load Sensor of the 2301D-ST will only read a small negative value.

  • Page 94: Figure 5-1. Temporary Wiring For Transformer Phase Correction

    2301D-ST Manual 26184 Figure 5-1. Temporary Wiring for Transformer Phase Correction Shut down the prime mover. HIGH VOLTAGE—The current transformers can develop dangerously high voltages. Do not disconnect a current transformer while the prime mover is running unless temporary 0.5 Ω, 20 W resistors are installed as shown in Figure 5-1 and all load is removed.

  • Page 95: Load Calibration Adjustment

    Manual 26184 2301D-ST 21. Unload the system and reverse the phase B CT wires on the same terminals.* 22. Apply full load, measure the load signal and record this reading. 23. Unload the system, remove phase B CT wires and connect them to the other pair of terminals.*...

  • Page 96: Droop Adjustment

    It may be necessary to reduce the load signal reading of each unit in the system to as low as 3 volts in cases of extremely poor system dynamics. If your system requires a load signal reading as low as 3 volts, consult Woodward for suggestions for possible remedies.

  • Page 97: Chapter 6. Troubleshooting

    Manual 26184 2301D-ST Chapter 6. Troubleshooting Introduction The following troubleshooting guide is an aid in isolating trouble to the control box, actuator, plant wiring, or elsewhere. Troubleshooting beyond this level is recommended ONLY when a complete facility for control testing is available.

  • Page 98: Control Test And Calibration

    Manual 26184 Control Test and Calibration General Conduct the following checks on the 2301D-ST. Then verify the functioning of set points and adjustments. Connect a computer to the communication port. Start the SERVLINK / WATCH WINDOW software in accordance with the instructions in Chapter 3.
  • Page 99 (respond). Make resistance checks at the actuator. Coil resistance on Woodward actuators is approximately 35 Ω. (Read with leads at terminals 13 and 14 disconnected.) Shutdown cause. Check Shutdown status in the Service Menu C** SHUTDOWN** #01.
  • Page 100 Magnetic pickup and 2301D-ST Check the magnetic pickup output voltage control. at speeds above idle—at least 1.0 Vrms. If magnetic pickup should fail and the override failed speed signal circuit is disabled, the 2301D-ST will call for maximum steam. Woodward...
  • Page 101 If the problem cannot be resolved by these checks, it will be necessary to remove the 2301D-ST from the switchgear. Temporarily mount it next to the prime mover and connect only a battery, magnetic pickup and actuator to the control (use a separate battery placed next to the prime mover).
  • Page 102 2301D-ST Manual 26184 Symptom Cause Solution Prime mover will not Necessary external wires not If stability occurs when the control is stabilize at rated no properly shielded (continued). mounted next to the prime mover, return load speed. The the control to the switchgear. Run new...

  • Page 103: Chapter 7. Communications

    The Modbus communication port, as defaulted from the factory, is not programmed. Although this port is not programmed it continue to update all information to all registers. This allows the 2301D-ST to be monitored but not controlled from an external device. By simply connecting a monitoring device, configured to communicate through Modbus, and to the 2301D-ST’s defaulted...

  • Page 104: Modbus Function Codes

    Program Mode and can be adjusted in the Service Mode, if required. The 2301D-ST control is programmed to function as a slave unit only. As a slave unit, the 2301D-ST will only respond to a transaction request by a master device.

  • Page 105: Port Adjustments

    Boolean Writes Boolean Writes are logic signals that are writeable to the 2301D-ST control. An example of a Boolean write value would be raise or lower commands. A logical true denoted by the value 1 will cause the command listed in the description to be executed.

  • Page 106: Boolean Reads

    Boolean Reads are logic signals that are readable from, but not writeable to, the 2301D-ST. An example of a Boolean read value would be a turbine trip status indication. The logic true will have the value 1 if the statement in the description column is true and a 0 if false.

  • Page 107: Modbus Scale Factors

    Manual 26184 2301D-ST Modbus Scale Factors Modbus has two limitations:  only integers can be sent across;  the value is limited between –32767 and +32767. These limitations can be overcome by scaling the value before it is sent across the Modbus.

  • Page 108: Chapter 8. Service Options

    Woodward systems and components for the retrofits and overhauls, long term service contracts, emergency repairs, etc. You can locate your nearest Woodward distributor, AISF, RER, or RTR on our website at: www.woodward.com/directory...

  • Page 109: Woodward Factory Servicing Options

    Flat Rate Remanufacture: Flat Rate Remanufacture is very similar to the Flat Rate Repair option with the exception that the unit will be returned to you in “like- new” condition and carry with it the full standard Woodward product warranty (Woodward Product and Service Warranty 5-01-1205). This option is applicable to mechanical products only.

  • Page 110: Packing A Control

    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 111: How To Contact Woodward

    Manual 26184 2301D-ST How to Contact Woodward For assistance, call one of the following Woodward facilities to obtain the address and phone number of the facility nearest your location where you will be able to get information and service. Electrical Power Systems...

  • Page 112: Appendix A. Service/Configuration Chart

    2301D-ST Manual 26184 Appendix A. Service/Configuration Chart CONFIGURE PROGRAMMED DEFAULT TUNABLE RANGE MENU VALUE VALUE MIN. MAX. A**SPD LOAD STRT OPTIONS** 01 Rated Speed (RPM) 3600.0 32000.0 02 Enter Rated/Max Load (KW) 1000 30000 03 MPU Min Spd Level (RPM) 250.0...
  • Page 113 Manual 26184 2301D-ST D**ANALOG INPUT OPTIONS** 01 Configuration Error? Monitor 02 Sel AI #1 Function (1-6) 03 Display AI #1 Function Monitor 04 Sel AI #1 Type (1-4) 05 Display AI #1 Type Monitor 06 Use Input #1 Fail Trip...
  • Page 114 2301D-ST Manual 26184 02 First Shutdown Monitor 03 Power Up Shutdown (1) Monitor 04 Overspeed (2) Monitor 05 MPU Fail (3) Monitor 06 Analog Input#1 Fail (4) Monitor 07 Analog Input#2 Fail (5) Monitor 08 Modbus Issued Trip (6) Monitor...
  • Page 115 Manual 26184 2301D-ST G**SPEED SETTING** 01 Idle Spd Setpoint 1000.00 32000.00 02 Idle to Rated (RPM/SEC) 25.0 32000.0 03 Rated to Idle Rate (RPM/SEC) 25.0 32000.0 04 Min Gov Setpoint (RPM) 3550.00 32000.00 05 Max Gov Setpoint (RPM) 3843.00 32000.00 06 Lower Slow Rate (RPM/S) 10.00...
  • Page 116 2301D-ST Manual 26184 J** FAILED MPU OVERRIDE ** 01 Auto-Ovrd Off Speed 450.00 0.00 2000.00 02 Auto-Ovrd On Speed 650.00 0.00 2000.00 03 Auto-Ovrd On Delay (SEC) 5.00 0.00 100.00 04 Use MPU Ovrd Timer FALSE FALSE TRUE 05 Use Rolldown Ovrd?
  • Page 117 Manual 26184 2301D-ST N** ACT LINEARIZATION ** 01 X-1 Value -10.0 110.0 02 Y-1 Value -10.0 110.0 03 X-2 Value 10.0 -10.0 110.0 04 Y-2 Value 10.0 -10.0 110.0 05 X-3 Value 20.0 -10.0 110.0 06 Y-3 Value 20.0 -10.0 110.0...
  • Page 118 2301D-ST Manual 26184 Q**DISCRETE OUT SETTINGS** 01 Relay 1 Selected As Monitor 02 Relay 1 Level Sw (1-7) 03 Relay#1 Level Select For Monitor 04 Relay 1 ON Level = -32000.0 32000.0 05 Relay 1 OFF Level = -32000.0 32000.0...
  • Page 119 Manual 26184 2301D-ST 09 Turn On Do-2 FALSE FALSE TRUE 10Discrete Output #2 Monitor 11 Turn On Do-3 FALSE FALSE TRUE 12 Discrete Output #3 Monitor 13 Turn On Do-4 FALSE FALSE TRUE 14 Discrete Output #4 Monitor 15 Turn On L/S Line Relay...

  • Page 120: Appendix B. Modbus Communication List

    2301D-ST Manual 26184 Appendix B. Modbus Communication List This Modbus Communication List is applicable for software revision 5418-047C. Boolean Writes Address Description 0:0001 Modbus Controlled Shutdown 0:0002 Alarm Acknowledge 0:0003 Shutdown Acknowledge 0:0004 System Reset 0:0005 Start 0:0006 Unload 0:0007...
  • Page 121 Manual 26184 2301D-ST 1:0012 Load Share Line Failed 1:0013 Speed PID In-Control 1:0014 Remote Speed Setpoint Enabled 1:0015 Speed Reference Lower Limit 1:0016 Speed Reference Raise Limit 1:0017 Load Sharing Enabled 1:0018 Overspeed Test Enabled 1:0019 Level SW#1 ON 1:0020...

  • Page 122: Declarations

    2301D-ST Manual 26184 Declarations Woodward...

  • Page 123: 2301D-St Control Specifications

    2301D-ST Control Specifications Woodward Part Numbers: 8273-128 2301D-ST certified for ordinary location 8273-1001 2301D-ST certified for hazardous locations 8923-932 Watch Window Installation Power Supply Rating 18–40 Vdc (SELV) Power Consumption less than or equal 20 W nominal Input Supply Voltage...
  • Page 124 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