Digital load sharing and speed control for engines (182 pages)
Summary of Contents for Woodward 350108V2
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Released Product Manual 350108V2 (Revision E, 6/2022) Original Instructions 505XT Digital Control for Steam Turbines (Single valve, Extraction and/or Admission) Manual 35018 consists of 2 volumes (35018V1 & 35018V2) Installation and Operation Manual Volume 2...
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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.
Overview ..............................99 Proportional Response ..........................100 Proportional + Integral (closed loop) ......................101 Derivative Response ..........................103 Proportional + Derivative (closed loop) ..................... 104 Proportional + Integral + Derivative (closed loop) ..................105 Controller Field Tuning General ........................ 107 Woodward...
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505 I ..............163 PPENDIX SING NTERNAL IMULATION K. C ................164 PPENDIX USTOM ROCEDURE L. S ..................... 165 PPENDIX TARTUP UIDE Commissioning Checklist .......................... 165 M. D ......................167 PPENDIX ATALOGS Overview ..............................167 ........................173 EVISION ISTORY Woodward...
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Table 12-2. Current CANOPEN State Values Displayed ................82 Table 12-3. Time Zones ..........................89 Table 13-1. Speed Control Dynamic Settings Options ................109 Table 13-2. On-Line/Off-Line Dynamics Selection ................... 109 The following are trademarks of Woodward, Inc.: DSLC easYgen GAP LINKnet...
Be prepared to make an emergency shutdown when starting the engine, turbine, or other type of prime mover, to protect against runaway or overspeed with possible personal injury, loss of life, or property damage. Start-up Woodward...
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.
505XT Digital Control System for Steam Turbines Introduction This volume of the manual contains application-specific notes, details on interfaces to other Woodward products and example configurations of typical steam turbine applications. This volume gives users an overview of the 505XT Control’s capabilities and applications. Typical applications are schematically shown and their functionality explained.
505 and a user PC or system HMI. The SOS program will run on the PC as a service and convert the 505 Woodward proprietary Servlink data to OPC data. The Control Assistant tool will connect as a client to the SOS server. Customers desiring to link to OPC data from the 505 will need to also connect to SOS.
Emergency Stop (which is a hardwired button directly integrated into the hardware. Users can log in at any user level with this tool. It will run for up to two hours without a license. For continuous operation of this tool, purchase a runtime license. Woodward...
Chapter 9. Peripheral Devices Overview This chapter provides a brief explanation of other Woodward devices, which easily integrate with the 505XT. By understanding the functionality of a peripheral device, a better understanding of the overall control configuration is achieved. Some of these devices connect to the 505XT by a digital communication link (either Ethernet or CAN depending on the product).
505XT Digital Control System for Steam Turbines Figure 9-2. Configuration/Woodward Links/DSLC-2 To enable the Woodward Link feature, select the check box on the screen above and enter the slave address and the IP address of the DSLC-2 device. The figure above shows the factory default IP addresses of the DSLC-2 and Ethernet port 3 of the 505XT.
Conditions Flag 1 (Bit Packed States Decoded to LED’s) 4634 Load Control Mode (Bit Packed States Decoded to LED’s) 4635 Reactive Load Control Mode (Bit Packed States Decoded to LED’s) 4636 Sync Control State (Bit Packed States Decoded to LED’s) Woodward...
Figure 9-6. Configuration/Woodward Links/VS-II To enable the Woodward Link feature, select the check boxes on the screen above to enable the CAN1 Link and confirm usage of the VariStroke II actuator, then enter the Device ID. If an analog (4-20 mA) demand signal is going to be connected to the VariStroke in addition to the CAN link, then select the desired function for this signal (AI Backup is recommended).
MFR300 (Multi-function Relay) Figure 9-8. MFR300 Multi-Function Relay This is a “Woodward Link” device. The MFR 300 is a multi-function generator protection relay used to sense and protect small generators. This multi-function protection relay integrates all generator protection functions into one common device reducing overall system installation complexity and cost.
505XT Digital Control System for Steam Turbines Figure 9-9. Configuration/Woodward Links/MFR300 To enable this Woodward Link feature, select the check box on the screen above to enable the CAN3 Link and confirm usage of the MFR300 multifunction relay, then enter the Device ID, Baud Rate, and system configuration.
LS-5 (Protection/Breaker Control Relay) Figure 9-12. LS-5 This is a “Woodward Link” device. The LS-5 series protection relays integrate generator breaker synchronization, power sense, and protection functions all into one package. This device is designed to function in combination with a prime mover controller like the 505XT to allow accurate generator control, as well as provide required generator protection.
Eight freely configurable LED`s are available on the LS-511 back panel mountable device Figure 9-13. Configuration/Woodward Links/LS-5 To enable this Woodward Link feature, select the check box on the screen above to enable the CAN3 Link and confirm usage of the LS-5 Circuit Breaker and Protection device, then enter the PDO number (Device ID), Baud Rate, and system configuration information.
HighPROTEC (Generator Protection Unit) Figure 9-15. HighPROTEC This is a “Woodward Link” device. The HighPROTEC is a family of generator protection devices designed to provide complete protection for generators and or power distribution. Various models and configurations exist that provide multiple ANSI standard protection functions.
Figure 9-16. Configuration Screen/Woodward Links/HighPROTEC To enable the Woodward Link feature, select the check box on the screen above and enter the slave address and the IP address of the HighPROTEC device. The figure above shows the factory default IP addresses of the HighPROTEC and Ethernet port 3 of the 505XT.
4–20 mA output proportional to real power. Woodward manufactures two types of RPS. The first type of RPS is designed to sense power flow in one direction only (0 to +5 A CT current only), and output a proportional 4–20 mA signal. This type of RPS was designed for and used to sense generator power output.
Woodward’s 2301 type of control. Woodward manufactured RPS have a 2.5 Hz Low pass filter (400 ms lag time) on their output to filter out the high frequency noise typically created in a switch gear type environment. Thus, if another vender’s watt transducer is used, verification that it has similar filtering criteria should be performed before it is applied with the 505.
For the generator and bus, the following parameters are provided: Hz, Vac, Amps, W, VA, VAR, PF, phase, voltage harmonics, current harmonics, negative phase sequence voltage, negative phase sequence current. Analog outputs: synchroscope, generator metering, and mains metering are available for selection at the 4–20 mA. Figure 9-21. EGCP-3 Control Woodward...
• Speed/Frequency Mismatch *—Inverse Time Protections implemented are according to IEEE C37.112 “very inverse” curves. For more information on Woodward’s EGCP-3 LS Control, please refer to Woodward manuals 26122 and 26194. Applying the 505 with Redundant I/H or I/P Converters The 505 can be applied in simplex or redundant actuator systems.
Properly installed valves allow on-line converter replacement. For more information on Woodward’s redundant CPC products, refer to manual 26448 and consult your sales representative about all CPC offerings.
When the Inlet PID is configured as a controller, it must be enabled and disabled by commands given through the 505XT’s front panel, contact input, or Modbus communications. With this configuration, when the Inlet PID is enabled, the Speed PID is disabled and tracks the Inlet PID’s output. Woodward...
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To control or limit any of the listed parameters, the 505 must be programmed to accept an Auxiliary analog input signal representing that parameter’s level. The exception to this rule is when controlling or limiting generator load, the Auxiliary PID can be programmed to use and share the KW/Unit load input with the Speed PID. Woodward...
Example 4: Plant Import/Export Power Control with DRFD Servo Interface • Example 5: Inlet Pressure Control with Isochronous Load Share Control in Island Mode • Example 6: Plant Import/Export Power Control with Isochronous Load Share Control in Island Mode • Example 7: Induction Generator Control Woodward...
Min Inlet Pressure Limiting KW Load Control KW Load Limiting Import/Export Load Control Import/Export Load Limiting Example 1–Pump or Compressor Discharge Pressure Control with Turbine Inlet Pressure Limiting Figure 10-1. Pump or Compressor Discharge Pressure Control with Turbine Inlet Pressure Limiting Woodward...
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Service mode’s (Cascade Control Settings, Use Min Load) setting must be set to “No”. In this case, because the Cascade PID is not sharing control of discharge pressure with another control, droop is not needed. (Cascade Droop = 0%) Woodward...
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Inlet setpoint at any time the Inlet PID will take control of the governor valve and lower it to help preserve inlet header pressure. See the Service Mode section of this manual for information on related tunable values and rates. Woodward...
Released Manual 35018V2 505XT Digital Control System for Steam Turbines Example 2–Inlet Pressure Control with Automatic Synchronizing & Generator Power Limiting Figure 10-2. Inlet Pressure Control with Automatic Synchronizing & Generator Power Limiting Woodward...
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As shown in Figure 10-2, generator load is being sensed with a Woodward Real Power Sensor and supplied to the 505’s KW/unit load input. This allows generator load to be set and controlled by the Speed PID when paralleled to the utility during unit start-up and shutdown.
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The system operator can select automatic synchronization through the Auto-Synch select switch (switch SW1 in Figure 10-2). When this switch is closed the 505’s synchronizing input is enabled and the EGCP-3 LS’s automatic synchronizing function is selected. Woodward...
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Auxiliary PID will take control of the governor valve to limit generator load. Once system conditions demand unit load below that of the Auxiliary setpoint, the Cascade/Speed PIDs will again take control of generator load. Woodward...
PID controller. This is an ideal controller for this type of function because it can be enabled and disabled as desired by a system operator. This gives a system operator full authority of when to transfer process pressure control to or from a letdown station or turbine bypass valve. Woodward...
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In order to limit generator load, the 505 control must be able to sense generator load. As shown in Figure 10-3 generator load is being sensed with a Woodward Real Power Sensor and supplied to the 505’s KW droop input. With this application generator over-load protection is performed by a combination of the Speed PID and the speed setpoint maximum limit.
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4 mA and 20 mA settings are not used and do not require programming. A contact input was programmed to enable the synchronizing analog input (Contact Input #5 Function: Synch Enable). Woodward...
When programmed for this type of control action, the Speed PID is disabled when the Auxiliary PID is enabled, and can only limit the 505’s valve output signal if unit load reaches 100%. Also, the Auxiliary setpoint automatically tracks the PID’s input value when not in-control. Woodward...
Speed PID controls governor valve position, instead of generator power. Thus, 100% governor valve position is considered 100% unit load, no matter if system conditions are at rated or not. Woodward...
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LVDT mounted to the valve rack to feedback actual rack position. Because the 505 does not have a bipolar drive circuit, and cannot perform closed loop servo position control, a Woodward Servo Position Controller (SPC) was used to interface with the existing servo actuator. The SPC used, accepts a 4–20 mA valve demand signal from the 505, monitors actual valve position (through LVDTs,...
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Import/Export power before being enabled, the transfer to Auxiliary control is bumpless. Once enabled, the Auxiliary PID’s setpoint can then be positioned to the desired import or export level. Because of the 505’s configuration, this unit will automatically switch to frequency control upon the opening of the plant-to-utility tiebreaker. Woodward...
EGCP-3 LS. This synchronizing function/ input can be enabled, through a contact input, function key, Modbus command, or the 505 service panel. As shown in Figure 10-5 a panel mounted (DPST) switch is used with this application to select automatic synchronization in both the EGCP-3 LS and 505. Woodward...
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4 mA and 20 mA settings are not used and do not require programming. A contact input was programmed to enable the Synch/Load Share analog input to allow synchronization through the EGCP-3 LS before the generator breaker is closed. (Contact Input #6 Function: Synch/Ld Share Enable). Woodward...
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+.1% of the desired frequency. Inlet header pressure (Cascade control) can be enabled any time after the utility tie and generator breaker contacts are closed. Cascade control can be enabled through a programmed contact, a Modbus command, or the 505’s service panel. Woodward...
The other units are used to control a plant export power level of five MW. Because the plant is contractually obligated to provide this level of power to the utility, and because it is more economical to make power than purchase it form the utility, a five MW plant export power level is desired. Woodward...
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This application uses Woodward EGCP-3 LSs and a MSLC to allow all units to communicate, share plant load, and control plant export power. The EGCP-3 LS is used on each unit, for synchronization and load sharing.
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505 steps the speed/load setpoint up to a minimum load level to reduce the chance of reverse powering or motoring the generator. This minimum load level is based on the speed/load setpoint and is defaulted to 3%. The defaulted value is adjustable through the 505’s Service mode (Breaker Logic–Min Load Bias = 5). Woodward...
Woodward EGCP-3 LSs can interface directly with a unit’s automatic voltage regulator. This allows units with EGCP-3 LSs to share reactive power as well as real power. This configuration also allows the MSLC to control plant power factor when the utility to tie breaker is closed.
The Inlet Pressure PID can be setup as a limiter (not a controller) to perform this function. It will sense turbine inlet pressure and limit governor valve position, based on a low inlet pressure setting. Woodward...
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The Cascade control loop was configured to receive a pump/compressor discharge pressure signal through Analog input #2 (Analog Input #2 Function: Cascade Input). The input’s 4 mA and 20 mA values were programmed based on what the pressure transducer was ranged/calibrated for. Woodward...
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“Speed Setpoint Slow Rate” setting until the pump/compressor discharge pressure does match the setpoint. This allows the Cascade control to be enabled in a controlled manner. Woodward...
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Inlet setpoint at any time, the Inlet PID will take control of the HP governor valve and lower it to help preserve inlet header pressure. See the Service mode section of this manual, for information on related tunable values and rates. Woodward...
505XT Digital Control System for Steam Turbines Example 9 — Extraction Turbine Inlet and Extraction Pressure Control with Automatic Synchronizing & Generator Power Limiting (Extraction Turbine, Decoupled Inlet mode) Figure 10-8. Inlet Pressure Control with Automatic Synchronizing & Generator Power Limiting Woodward...
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For this reason, Speed droop is used with this application. (Use KW Droop?—No) To achieve good response and load adjustment resolution, droop was set to 5% of rated speed. (Droop = 5 %) Woodward...
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#2. (Analog Input #2 Function: Cascade Input) he input’s 4 mA and 20 mA values were programmed based on what the pressure transducer was ranged/calibrated for. The 505XT was configured to accept a contact from a panel mounted switch to externally enable and disable inlet header pressure control. (Contact Input #3 Function: Casc Control Enable) Woodward...
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When the plant-to-utility tie-line breaker is closed and the unit generator breaker closes, the 505XT steps the speed/load setpoint up to a minimum load level to reduce the chance of reverse powering or motoring the generator. This minimum load level is based on the speed/load setpoint and is defaulted to “3%”. The Woodward...
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Auxiliary PID will take control of the governor valve to limit generator load. Once system conditions demand unit load below that of the Auxiliary setpoint, the Cascade/Speed PIDs will again take control of generator load. Woodward...
The system operator uses the service panel to communicate with the 505 system. The service panel can be used only occasionally to communicate with the system, or it can continuously monitor user interface pages for the operator to view. Woodward...
The ADJUST arrows will change a selected Service parameter by 1%. Using the ADJUST arrows in combination with the SHIFT key will change the service parameter by 10%. The view of the Adjust button icon next to the value will change to show the up/down arrows as filled when the SHIFT key is pressed. Woodward...
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When making a direct entry of a negative number (for example, a sensor range of –50 to 200), enter the value first and then press the +/– key. When using the SERVICE mode, refer to the Service Mode worksheet in Appendix B. Woodward...
See Figure 5.2 for an example of how to see that a parameter is authorized, use a work sheet (provided at the end of this manual), to document any changes for future reference. Figure 12-2. Authorized and Unauthorized Components Woodward...
Pressing Enter while on these pages will not navigate to these pages. This is different from the HOME page, where unused functions are completely removed to avoid confusion and simplify navigation. Figure 12-3 Service Menu (page 1) Woodward...
When Emergency Minimum Load is triggered this is the rate, in RPM/s, that will be used to go to minimum load. ONLINE SPEED DYNAMICS SPEED LEVEL dflt= Min Gov (Low Idle, Max Gov) For Mechanical Drive only. When Speed increases above this value, the control switches to Online Dynamics. The value default is Minimum Governor. Woodward...
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When NO, the remote speed set point can move the speed set point down to the higher of the minimum governor setting or the RSS 4 mA value. Woodward...
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This provides a maximum time for speed to be sensed on startup before a loss of speed is detected. MPU OVERRIDE TIME (SEC) dflt= 600.0 (0.0, 600) Sets the maximum time after a start is initiated for speed to be sensed above the failure level. Only valid if ‘Use MPU Override Timer?’ is YES. Woodward...
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Use this to adjust the “Hot Reset Timer” value set in Configuration. This is the time needed, when RST Timer level is reached, to transfer the start-up parameters from COLD to HOT. HOT RESET TIME REMAINING (status indication only) Woodward...
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Pressure 5 dflt= *100.0 (0.0, 10000.0) Input point #5 of the pressure compensation curve, in engineering units. (Must be greater than the ‘Pressure 4’ value) Gain 5 dflt= *1.0 (0.65, 1.54) Output point #5 of the pressure compensation curve. Woodward...
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The default of 0 is ideal if there is no significant plant load when this occurs. If there is plant load, this value can be increased to avoid an underspeed trip condition. HOLD BREAKER CHANGES? dflt= NO (Yes/No) Woodward...
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This rate is defaulted to three times (3x) the ‘Set Point Slow Rate’. This value can be changed to a new value; however, the HOLD CHANGES prompt must be set to YES to retain the change. If not, the value will return to the default on the next initialization. SETPT ENTERED RATE (UNITS/S) dflt= xxx (0.01, 1000) Woodward...
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YES to retain the change. If not, the value will return to the default on the next initialization. (Must be between the ‘Minimum Auxiliary Set Point’ and the ‘Maximum Auxiliary Set Point’ settings) REMOTE DEADBAND VALUE dflt= 0.0 (0.0, 500) Woodward...
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Value of speed as a permissive for enabling Extraction/Admission control. The speed must be greater than this setting before control will be active. This value must be greater than Minimum Governor Speed. GENERATOR BREAKER OPEN EXT/ADM INHIBIT dflt= YES (Yes/No) Woodward...
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Minimum setting allowed by the remote input. This setting is defaulted to the Ext/Adm Set Point Minimum Value. This value can be changed to a new value, however, the HOLD CHANGES prompt must be set to YES to retain the change. If not, the value will return to the default on the next initialization. Woodward...
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If not, the value will return to the default on the next initialization. (Must be between the ‘Minimum Governor Speed’ and the ‘Maximum Governor Speed’ settings) CASCADE DEADBAND dflt= 0.1 (0.0, 50) Cascade PID controller integrator deadband setting in percent. RAISE /LOWER CASCADE SETPOINT ONLY? dflt= NO (Yes/No) Woodward...
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‘Save Settings’ key. Communications (only displayed if configured) When this header appears in the display, press the down arrow key to view or change this block or press the left or right arrow key to select another block to change. Woodward...
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Displays a green LED if the port is healthy. The `Time-out Delay` or port configuration may need to be adjusted. EXCEPTION ERROR (status indication only) Displays a red LED if the port has an exception error. TIMEOUT DELAY dflt= 10.0 (0, 100) Woodward...
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This value displays the current loading of CAN PORT 1 in %. It provides a “real time” monitor of the network load. NMT STATUS (status indication only) Table 12-1. Current CANOPEN NMT State Values Displayed Status Meaning Bootup Stopped Operational Pre-Operational STATE (status indication only) Table 12-2. Current CANOPEN State Values Displayed State Meaning Preoperational Initializing Operational Faulted Woodward...
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TEST ALARM (TUNABLE) – EVENT ID 82 dflt= NO (Yes/No) Set to YES to trigger Alarm ID 82. This can be used to test communications to external devices. Set to NO and press RESET to clear the alarm. CONFIGURABLE ALARM 1 Woodward...
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ENABLE SPEED SETPOINT (RPM)? dflt= 100 (-1, 10000) This value is used as a permissive for the alarm condition. If turbine speed is below this value, an alarm is not generated even if the alarm condition is met. Woodward...
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20.0 (-5, 110) Input point #3 of the actuator linearization curve, in percentage. (Must be between the ‘X-2 Value’ and the ‘X-4 Value’ settings) Y-3 VALUE dflt= 20.0 (-5, 110) Output point #3 of the actuator linearization curve, in percentage. Woodward...
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0.0 (-5, 110) Output point #1 of the actuator linearization curve, in percentage. X-2 VALUE dflt= 10.0 (-5, 110) Input point #2 of the actuator linearization curve, in percentage. (Must be between the ‘X-1 Value’ and the ‘X-3 Value’ settings) Woodward...
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X-1 VALUE dflt= 0.0 (-5, 110) Input point #1 of the actuator linearization curve, in percentage. (Must be less than the ‘X-2 Value’) Y-1 VALUE dflt= 0.0 (-5, 110) Output point #1 of the actuator linearization curve, in percentage. Woodward...
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Displays the actuator demand (%) after the linearization curve. Real Time Clock USE SNTP SYNCHRONIZATION dflt= NO (Yes/No) Select this option if using an SNTP Server for time synchronization with the 505 internal clock. This will affect alarm and event indication time stamping. Woodward...
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1000.0 (10, 1000) Set the number of milliseconds between each data point in the data log. After changing this value, the Data Log must be stopped and started again for this sample rate to be used. ENABLE CONTINUOUS/DISABLE CONTINUOUS dflt= Disabled Woodward...
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Select this option to turn on the maintenance alarm, which is an alarm based on the number of turbine run hours and reminds the user that the control should be serviced periodically. Unselected this to disable the maintenance alarm. Woodward...
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100.0 (-10.0, 110.0) This is the maximum limit for the Isolated Control PID demand in percent. MINIMUM dflt= 0.0 (-10.0, 110.0) This is the minimum limit for the Isolated Control PID demand in percent. INITIAL dflt= 0.0 (-10.0, 110.0) Woodward...
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Modbus, and contact commands. DISABLE SCREEN SAVE? Dflt= No (Yes/No) Use this to disable the screen saver function. ENABLE AUTO-DIMMING? Dflt= YES (Yes/No) Uncheck this box to disable the auto-dimming of the display screen USE TRIP FROM REMOTE VIEW? Dflt=No (Yes/No) Woodward...
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When ‘SET CLOCK’ is pressed (or the Clock SYNC Pulse Contact Input is closed), the hardware time will be set to this value dflt= 0 (0, 23) HOUR When ‘SET CLOCK’ is pressed (or the Clock SYNC Pulse Contact Input is closed), the hardware time will be set to this value Woodward...
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NO (Yes/No) Select this option to allow the use of the manual valve demand feature. This allows the operator to disable all controllers and hold the valve demand steady for a limited period of time for system troubleshooting purposes. Woodward...
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101% (LSS) or –1% (HSS), when this block is not in control of the LSS or HSS bus into which it feeds. It is not advisable to set the Threshold to zero. PID THRESHOLD (CONTROLLER) dflt= 100 (0.0, 110) Woodward...
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This is the rate that the set point will move when set point is entered from the front panel of the control or from the communication links. This rate is defaulted to the set point slow rate. This value Woodward...
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(Must be between the ‘Minimum Set Point’ and the ‘Maximum Set Point’ settings) REMOTE DEADBAND VALUE dflt= 0.0 (0.0, 500) Remote setting input dead band in engineering units. REMOTE LAG-TAU VALUE dflt= 0.0 (0.0, 10) Remote Set Point input lag setting. HOLD REMOTE EXHAUST CHANGES? dflt= NO (Yes/No) Woodward...
(temporary overcorrection) in both increasing and decreasing directions. The application of brakes to fall behind the car in the first continuous lane or passing gear to get ahead of the car in the first continuous lane is derivative action. Woodward...
Proportional effect. Integral Response Integral Gain as stated in the Woodward controls is repeats per minute (or Reset Rate). Therefore, a high amount of Integral gain (high number) would result in a large amount of Reset action. Conversely, a low Integral gain (low number) would result in a slower reset action.
The next highest curve is the Proportional action and follows the measured variable proportionately. The Integral curve adds to the Proportional curve resulting in a different valve position, thereby returning the process to the Setpoint. Woodward...
1/4 decay ratio. If increased cycling occurs, the Integral must be turned off or the controller switched to “manual” if allowed to go too far. Ideally, the process should not continue to cycle after the setpoint has been reached as in the second curve from the bottom. Woodward...
Derivative will not remove offset. Woodward Derivative is split into two working domains, Input dominant and Feedback dominant. The allowed values for DR range from 0.01 to 100. The most common derivative is Feedback dominant; it is automatically selected with a Derivative Ratio (DR) from one to 100.
Notice offset still exists between the desired setpoint and the drooped control point that resulted from the load change. The top curve is the resultant controller output, Proportional plus Derivative. If an upset (momentary) had occurred rather than a load change, there would be no offset. Figure 13-5. Closed Loop Proportional and Derivative Action Woodward...
The resultant curve (at the top) shows a similar over- correction (in this case), but in addition, the valve will stay at the new position required to keep the measurement at the setpoint. Woodward...
Auxiliary in), and can therefore prevent overshoot of the setpoint better than a feedback dominant controller. Although this response is desirable during a startup or full load rejections, it can cause excessive control motions in some systems where a smooth transition response is desired. Woodward...
On an initial startup with the 505, all PID dynamic gain terms will require adjustment to match the respective PID’s response to that of its control loop. There are multiple dynamic tuning methods available that can be used with the 505’s PIDs to assist in determining the gain terms that provide optimum control loop response times. Woodward...
(same as old 505). Speed and setpoint are normalized (0-100%) into the speed PID on the 505XT, same as old 505’s. This insures that gain settings from the installed units will work nearly identical to the new unit. Woodward...
OPTI_Tune process at multiple load points and create a gain curve that will adjust the Speed PID gains through the load range of the turbine. Figure 13-10. Speed Dynamics Generator On-Line Gain Curve Woodward...
Actuator Limit values are used such that the OPTI_Tune cannot exceed these values during the test – if they are exceeded the Test will abort, dynamic values will return to the initial values and a Fault status message will be displayed. Woodward...
If the steam valve is blocked in this manner and the actuator output is steady but the turbine still hunts, then the problem is outside the governor. If an actuator hunts, or appears sticky, it may need dither (especially TM type). Woodward...
From the (MANUAL SHUTDOWN) (PUSH YES OR NO) display, you cannot initiate a shutdown. If actual speed is less than the speed called for by the speed setpoint, check for droop (kW or speed). Droop causes the actual speed to be less than the speed reference. Woodward...
Microprocessor Motorola MPC5125 Microprocessor/25 MHz Interfacing to Woodward Service Tools All interfacing to service tools is done via Ethernet (RJ45) communications and can be accessed from any of the Ethernet ports. See the Appendices for instructions on connecting and using each of the service tools.
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Released Manual 35018V2 505XT Digital Control System for Steam Turbines The “nominal rate” listed is the fastest update rate, the worst case response would be twice the nominal rate. Woodward...
Generator Breaker Open Disable YES/NO Utility Breaker Open Disable YES/NO Site VALVE LIMITER Default Value HP Limiter Rate rpm/s rpm/s HP Entered Rate HP Limiter Maximum Limit 101.0 HP Maximum at Start 101.0 Shutdown at Maximum YES/NO Hold Limiter Changes YES/NO Woodward...
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Rate to Rated Idle 1 Delay Rate to Idle 2 rpm/s Idle 2 Delay Rate to Idle 3 rpm/s Idle 3 Delay If Temp Start used Status (deg) Temperature 1 Input Override Temp 1 YES/NO Status (deg) Temperature 1 Input Woodward...
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Frequency Offset (Hz) Frequency Deadband (Hz) Tie Open Load Rejection? YES/NO Hold Breaker Logic Changes YES/NO Frequency Excursion Test Visible YES/NO Site SYNC/LOAD SHARE Default Value Input Bias Gain value Input Bias Deadband filter Lag-Tau Value (sec) Hold Changes Woodward...
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Use Droop? YES/NO Droop (%) Rated Setpoint 100.0 Units Manual P Action On PV Failure Manual LP Limiter Max LP Limiter Min PID Threshold 100.0 PID Minimum Output Startup Demand Setting (E/A or ADM) 50.0 Speed Enable Setting 1000.0 Woodward...
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Hold Cascade Changes YES/NO If Remote Cascade Setpoint Not Matched Rate Units/s Remote Cascade Maximum Rate Units/s Minimum Remote Cascade Setpoint Units Maximum Remote Cascade Setpoint Units Remote Deadband Units Lag-Tau Value value Hold Remote Cascade Changes YES/NO Woodward...
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Login Level Status Socket 3 0.0.0.0 Status Status Status Login Level Status Socket 4 0.0.0.0 Status Status Status Login Level Status Socket 5 0.0.0.0 Status Status Status Login Level Status Socket 6 0.0.0.0 Status Status Status Login Level Status Woodward...
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Modbus Serial Link 1 Enable When Local YES/NO Link 1 Writes Enabled Status Modbus Ethernet Link 2 Enable When Local YES/NO Link 2 Writes Enabled Status Modbus Ethernet Link 3 Enable When Local YES/NO Link 3 Writes Enabled Status Woodward...
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YES/NO Use Level 2 as a Trip? YES/NO Setpoint Hysteresis -3.00 Units Delay for Event Action 2.00 Enable Speed Setpoint Enable Speed Setpoint Hysteresis 10.00 If Inlet Pressure Signal Analog Input Signal Not Used Use Alarm Setpoint 1 YES/NO Woodward...
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X-3 Value 20.0 Y-3 Value 20.0 X-4 Value 30.0 Y-4 Value 30.0 X-5 Value 40.0 Y-5 Value 40.0 X-6 Value 50.0 Y-6 Value 50.0 X-7 Value 60.0 Y-7 Value 60.0 X-8 Value 70.0 Y-8 Value 70.0 X-9 Value 80.0 Woodward...
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X-5 Value 40.0 Y-5 Value 40.0 X-6 Value 50.0 Y-6 Value 50.0 X-7 Value 60.0 Y-7 Value 60.0 X-8 Value 70.0 Y-8 Value 70.0 X-9 Value 80.0 Y-9 Value 80.0 X-10 Value 90.0 Y-10 Value 90.0 X-11 Value 100.0 Woodward...
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Run Time Hours with Load > 25% value Run Time Hours with Load > 75% value Total Run Time Hours value Enable Maintenance Alarm YES/NO Maintenance Alarm Interval 15000 Hours Maintenance Alarm Status Peak Speed Reached Status Peak Acceleration Reached Status Woodward...
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Value Screen Saver Delay Hours Auto Login as Operator YES/NO Operator Password wg1111 string Use STOP Command YES/NO Screen Update Rate Status (ms) CPU Idle Time Status (%) Internal Operating Temp of 505 Status (C) Screen Brightness Status (%) Woodward...
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Forward Rate to Activate 10.0 Emergency Max Forward Rate 100.0 Emergency Max Speed Offset 300.0 Emergency Max Speed Rate 500.0 RPM/s Site MANUAL DEMAND Default Value Enable Use of Manual Demand YES/NO Manual Demand Rate 0.25 Timeout When Inactive Woodward...
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PID Minimum Output Display Gauge Multiplier Value Hold Auxiliary Changes YES/NO If Remote Inlet Setpoint Not Matched Rate Units/s Remote Maximum Rate Units/s Minimum Auxiliary Setpoint Units Maximum Auxiliary Setpoint Units Remote Deadband Units Lag-Tau Value value Hold Remote Changes YES/NO Woodward...
“Service” User Level Password Login as Service: Login: Service Password: wg1112 “Configure” User Level Password Login as Configure: Login: Configure Password: wg1113 “ServiceUser” User Level Password Login as ServiceUser (no autofill key available, must be entered manually): Login: ServiceUser Password: ServiceUser@1 Woodward...
The Woodward SOS Servlink OPC server ("SOS") provides an OPC interface for Woodward controls. It runs on a Windows PC that accesses data on controls using the Woodward proprietary Servlink protocol through an Ethernet connection. Woodward OPC client applications, such as Monitor GAP and Control Assistant connect to SOS by selecting a 'Servlink OPC server' connection.
The Default IP for Ethernet 1 = 172.16.100.15 (subnet = 255.255.0.0) All information in the communication link between the 505 and the PC is done via a Woodward Servlink connection (using the SOS tool). It is recommended to initially launch this tool independently to establish a healthy communication link.
Figure E-5. SOS - Enter 505 TCP/IP address The SOS program will locate the control and establish a Woodward Servlink connection between the control and your PC. This will take a few seconds to establish, the dialog box should now look like this (with the IP address being equal to what you typed in above).
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The Control ID can be changed via SOS by right clicking the session and selecting “Set ControlId” Type in the new Control ID and press ‘Set’ to commit the change. The new Control ID can be used with Control Assistant Trend Scripts, etc. Woodward...
Viewing Datalog files Prior to installing Control Assistant, you must install the Microsoft .net framework program, which is available on the Woodward website (www.woodward.com). This will install some operating system library files that are used by Control Assistant. Installing Control Assistant License Agreement &...
Define the desired directory to save Control Assistant and press ‘Next’. It is preferable to use the default, as it will keep all Woodward Software in a common folder. If the program folder field is blank, type in “Woodward” and the install will create a program folder named Woodward.
NOT function properly until the PC is restarted. Using Control Assistant To launch Control Assistant: Under Start / All Programs / Woodward / Control Assistant 4 Click on Control Assistant 4 Use the Control Assistant HELP in the menu list to get familiar with all features of this product, or for additional information about using the features discussed in this chapter.
Windows application that provides a powerful and intuitive interface. The menu structures are familiar to Windows users. Variable navigation is provided through the Explorer window similar to the Explorer in Windows. This tool will look very familiar to users with experience using Woodward’s Watch Windows products.
If the 505 TRIPPED LED was OFF (no trips present) then the confirmation box will state it was not allowed Click on the tunable file and select Transfer/Send Tunable List from the menus or the Send Icon from the tool bar (Note in this state both retrieve and send are available) Woodward...
Use File/Open to open a previously saved trend script file (if you have one). To create new trends, the user will need some understanding of how Woodward’s GAP software is constructed as well as some specific knowledge of the 505 application software. If the user is not familiar with GAP, they should limit their use to existing trend script files.
Click File > Open script as a template… > Select the Trend Script Control Assistant will then pull up a list of all the controls available in SOS. Select the control to which you would like to apply the Trend Script. Woodward...
AppManger Service Tool File Management with App. Manager AppManager is a Windows based remote access tool for Woodward controls. The 505 is loaded with a service that allows it to interface with AppManager. AppManager is used to manage the applications on the 505 and provide access to operating system information.
To install App Manager, select “I accept the terms in the license agreement”. Once this has been selected, select “Next” to continue the installation. Figure G-3. App Manager Installation Choose the desired folder in the ‘Start Menu’ to save the shortcuts. Figure G-4. App Manager Install Complete Woodward...
For user already familiar with this tool the only new feature is the ability to access the GUI files. For complete information on this tool, use the help menu To launch App Manager: Under Start / All Programs / Woodward / AppManager Click on AppManager You should see the following dialog box appear –...
The application panel has two views - the control application panel has a white background while the GUI application window has a maroon background. To toggle between the panels use the swap button on the far right side (the second button down from the top). Woodward...
Trend log files. Do this by using the menus and selecting Control/Retrieve Files. A dialog box will open and show the files that are available in that particular application directory. All Data and Trend log files are located in the control application folder. Figure G-11. Retrieving Files Woodward...
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If this occurs, the user must first delete the file on the control before the new one can be transferred. Woodward typically adds a revision or a build number to the end of the file name so that any updates can be added to the control and the previous revisions will still be available.
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AppManager is the tool that is used if a service pack needs to be installed to update the OS or the real- time process that executes the GUI application. Typically, only Woodward representatives do this or via a service bulletin, that directs the user through the process.
Figure H-1. Configuration/Communications Screen The ENET 1, ENET 2, and ENET 3 configuration refer to the physical Ethernet connections on the unit. ENET 4 is reserved and is not configurable through the front panel. Figure H-2. Ethernet Port Layout (Ports on Side) Woodward...
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Once a new gateway address has been entered, the “Set Gateway” button must be pressed in order to send the new gateway to the control. • Once set, the new gateway will be displayed at the top of the pop-up page. Woodward...
1) Confirm the SNTP IP address readout is correct 2) Confirm that the SNTP Fault LED remains off ② 3) Confirm that the System Time updates to the network time (this may take several minutes) ③ Figure H-3. Real Time Clock SNTP settings Woodward...
When the installation file is executed, the following welcome window will appear: Figure I-2. Installation Welcome Window Select “Next” to continue. The Installation Folder window will open. A default installation folder will be shown. If a different installation folder is needed, click the “Browse…” button to select the new folder. Woodward...
Select “Next” to continue. The Start Menu shortcuts window will open. A default location in the Woodward program folder will be shown. If a different Start Menu location is needed, type the new location in the window or select one of the locations presented in the list.
Configuration of the installation is complete and the actual installation process will begin. A window will open showing the progress of the installation. If prompted to do so, give the installation file permission to make changes to the PC. The following window will open when installation is complete. Woodward...
Click “Finish” to close the window. The Remote View tool is now ready for use. Remote View Configuration To start the Remote View tool, go to the Start Menu and select 505 Remote View from the Woodward folder (or in the alternate folder specified at installation). The configuration window will open. This window has the following sections: •...
Displaying the applications requires login to the control. When the “Get app list” button is clicked, the login window will open. Figure I-10. Login Window with Fields for User Name and Password Woodward...
505 front panel, but with the right and bottom physical buttons hidden. The Full setting shows the tool as just the screen from the front panel (all physical buttons hidden). Click the “Apply” button to confirm the scale and panel type. Woodward...
Released Manual 35018V2 505XT Digital Control System for Steam Turbines Figure I-12. Default View of the Tool Figure I-13. Simple View of the Tool Woodward...
“Save”. The following figure shows “Demo” entered as the name for the current settings. Figure I-15. Entering a Name for the Current Settings Woodward...
Get the application list for the control (requires login) The Remote View tool is opened by selecting an application in the configuration window and clicking “Launch”. Alternately, open the Remote View tool by selecting a properly configured settings file from the configuration window. Woodward...
The configuration window can be opened at any time by clicking the gear button at the top right corner of the tool. The Remote View tool can be closed by clicking the X button at the top right corner of the tool. Woodward...
3. Configure the ramp rates at rate times as a fraction of what you want (for example for a 4 hour idle delay use 0.24 minutes instead of 240 min) 4. Exit the Configuration mode and re-login as ServiceUser 5. Simulate a start Woodward...
7) Open the appropriate GUI application folder, and download the “custom_tags.ini” file 8) Select “Transfer Files to the Current Control” 9) Select the edited “custom_tags.ini” file and press Open. The file will get copied to the control. 10) Stop and start the appropriate wgui application Woodward...
Validate speed control stability at Idle (or lowest desired controllable speed), tune OFFLINE dynamics ☐ If turbine is an Extraction/Admission unit verify correct demand for the LP Valve thru the start routine ☐ Manually set the ONLINE dynamics to match the OFFLINE settings above Woodward...
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Tunable settings file for customer (for use on spare unit for training or future replacement) ☐ ☐ Verify customer has all system documentation – manuals, software tool installs ☐ Verify customer knows basic understanding of any Woodward service tools they want to use ☐ Appropriate contact numbers for support and/or service Woodward...
The control will store three log files per datalog type and will then overwrite previous datalog files when a new file is generated. The files are indexed with a value from one to three which increments each time a new file is generated. Woodward...
The Graph Properties page will open with the list of available signals in the left window. Signals plotted are referred to as pens, can be moved from the available signals list to the right window. Once in the right window, the pen color and order can be customized: Woodward...
In the bottom right hand corner of the window, the ‘Time Difference’ is in seconds and is the amount of time difference between the cursors. Please see the help menu within Control Assistant for detailed information on all menu options. Woodward...
PC where files will be stored. Press ‘OK’ to exit the configuration menu. Note that, by default, each file is approximately 2.7 megabytes and is stored once every 100 seconds. This means that 97.2 megabytes of data will be stored every hour on your PC. Woodward...
Automated File Collection > Start Automated File Collection Task. Once started, AppManager will display ‘Monitoring Network for New Files’ in the bottom window indicating that new files on the control are automatically saved to your PC. Woodward...
Increment the revision number at the top for reference (this can be seen in GAP / WinPanel to verify file being used). Then use AppManager to place the file back on the control in the control applications folder. The datalogging must be stopped and then restarted to use the updated file. Woodward...
Ext/Adm Inhibit”, and ”Tie Open Load Rejection?” settings to Chapter 12 • Replaced text in “Use Acceleration Limiter “ setting • Added two new rows to “Breaker Logic” table in Appendix A • Added new row to “Extraction/Admission Control” table in Appendix A Woodward...
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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.
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