Woodward 2301D Installation And Operation Manual
  1. Manuals
  2. Brands
  3. Woodward Manuals
  4. Controller
  5. 2301D
  6. Installation and operation manual

Woodward 2301D Installation And Operation Manual

Digital load sharing and speed controls for engines
Hide thumbs
Table of Contents

Advertisement

Quick Links

2301D and 2301D-EC Digital Load Sharing
and Speed Controls for Engines
Ordinary Locations Hazardous Locations
2301D
2301D-EC
8273-140
8273-138
Installation and Operation Manual
Product Manual 26247
(Revision C)
Original Instructions
8273-141
8273-139

Advertisement

Table of Contents
loading
Need help?

Need help?

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

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Woodward 2301D

Summary of Contents for Woodward 2301D

  • Page 1 Product Manual 26247 (Revision C) Original Instructions 2301D and 2301D-EC Digital Load Sharing and Speed Controls for Engines Ordinary Locations Hazardous Locations 2301D 8273-140 8273-141 2301D-EC 8273-138 8273-139 Installation and Operation Manual...
  • Page 2 Revisions—Text changes 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

    Manual 26247 2301D/2301D-EC Digital Control Contents ................   EGULATORY OMPLIANCE ..........  LECTROSTATIC ISCHARGE WARENESS 1. G ............1  HAPTER ENERAL NFORMATION   Description ......................1   Applications ......................2   Control Options ....................... 3   References ......................3 2. I ................
  • Page 4 2301D/2301D-EC Digital Control Manual 26247 Contents 4. I ............ 64  HAPTER NITIAL ONTROL ETTINGS   Initial Prestart Settings ..................64   Start-up Adjustments .................... 64   Adjust for Stable Operation .................. 65   Speed Setting Adjustment ..................65   Dynamic Adjustment ..................... 66  ...
  • Page 5 Manual 26247 2301D/2301D-EC Digital Control Contents   Port Adjustments ....................101   2301D Control Modbus Addresses ..............102   Modbus Scale Factors ..................103   Shutdown Command through Modbus ............... 103   Start Command Through Modbus ..............104   For More Modbus Information ................104 9.
  • Page 6 Figure 1-1a. 2301D Outline Drawing (Ordinary Locations) ........4   Figure 1-1b. 2301D Outline Drawing (Hazardous Locations) ........ 5   Figure 1-2a. 2301D Plant Wiring Diagram (sheet 1) ..........6   Figure 1-2b. 2301D Plant Wiring Diagram (sheet 2) ..........7  ...

  • Page 7: Regulatory Compliance

    Manual 26247 2301D/2301D-EC Digital Control 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 8: Electrostatic Discharge Awareness

    PCB from the control cabinet, place it in the antistatic protective bag. To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

  • Page 9: Chapter 1. General Information

    The 2301D provides control in either isochronous, droop, or base load. The 2301D will allow for soft load transfer when being added to or removed from a bus. The isochronous mode is used for constant prime mover speed with: ...

  • Page 10: Applications

    8 Discrete (Switch) Inputs (3 inputs are configurable)  4 Configurable Discrete (Relay Driver) Outputs The following is an example of the typical hardware needed for a 2301D system controlling a single prime mover and generator:  A 2301D electronic control ...

  • Page 11: Control Options

     Analog output  Discrete outputs Woodward application engineers are always available to assist you in selection of the correct control for your system, or to answer questions concerning control installation, operation, or calibration. Contact any Woodward office. References The following publications contain additional product or installation information on Load Sharing and Speed Controls, and related components.

  • Page 12: Figure 1-1A. 2301D Outline Drawing (Ordinary Locations)

    2301D/2301D-EC Digital Control Manual 26247 Figure 1-1a. 2301D Outline Drawing (Ordinary Locations) Woodward...

  • Page 13: Figure 1-1B. 2301D Outline Drawing (Hazardous Locations)

    Manual 26247 2301D/2301D-EC Digital Control Figure 1-1b. 2301D Outline Drawing (Hazardous Locations) Woodward...

  • Page 14: Figure 1-2A. 2301D Plant Wiring Diagram (Sheet 1)

    2301D/2301D-EC Digital Control Manual 26247 Figure 1-2a. 2301D Plant Wiring Diagram (sheet 1) Woodward...

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

    (100 mA MAX AT 24 Vdc) MINIMUM FUEL, CLOSE TO RUN CONFIGURABLE (FAILSAFE OVERRIDE) CONFIGURABLE (IDLE / RATED) CONFIGURABLE (CB AUX) DISCRETE INPUTS SPEED TRIM RAISE SPEED TRIM LOWER LOAD / UNLOAD SELECT BASELOAD Figure 1-2b. 2301D Plant Wiring Diagram (sheet 2) Woodward...

  • Page 16: Figure 1-2C. 2301D Plant Wiring Diagram (Notes)

    2301D/2301D-EC Digital Control Manual 26247 Figure 1-2c. 2301D Plant Wiring Diagram (notes) Woodward...

  • Page 17: Chapter 2. Installation

    Power Requirements The 2301D control 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 18: Electrical Connections

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

  • Page 19: Setting Speed Range

    Figure 2-1. Installation of Wiring into Terminal Setting Speed Range The Microprocessor inside the 2301D calculates the speed range to be used by entering the engine/generator synchronous speed and number of gear teeth. This configured speed sets the hardware-to-software scaling. The rated speed setting is set in service as the speed reference selected when the Rated switch is closed.

  • Page 20: Load Sharing Lines

    Use shielded cable and connect the load-sharing lines directly to terminals 10(+) and 11(–). Connect the shield to terminal 12. When all controls in the system are of the 2301D or 2301A types, the shields may be connected continuously between controls.

  • Page 21: Discrete Inputs (Terminals 28-38)

    These terminals must be isolated from ground. In systems that provide an external low voltage source to power the 2301D control, the discrete inputs may be powered by this external low voltage. The voltage source used must be capable of supplying 100 mA at a voltage level of 18 to 40 Vdc.

  • Page 22: Digital Inputs B, C, D (Terminals 32, 33, 34)

     Idle/rated switch  Generator Breaker (52G) Isoch  Use Modbus (for 2301D-EC with Modbus) The Factory default settings are as follows:  Discrete input B (terminal 32) is configured for 2 (1,8) Failed speed override.  Discrete input C (terminal 33) is configured for 6 (1,8) Idle/Rated switch.

  • Page 23: Select 2 Nd Dynamics

    Manual 26247 2301D/2301D-EC Digital Control Select 2 Dynamics One of the 3 configurable discrete contacts can be configured as Select 2 dynamics. In menu I**Dynamics #2** the parameter enable dynamics 2 w/CB should be configured at TRUE to enable the 2 dynamics.

  • Page 24: Idle/Rated Software Switch

    2301D/2301D-EC Digital Control Manual 26247 Idle/Rated Software Switch It is also possible to use a software Idle to Rated switch. The engine starts and go to the idle set point, after a tunable delay time rated is selected and the speed reference ramps to rated speed.

  • Page 25: Raise Speed/Load Contact (Terminal 35)

    Loading Control or Import/Export Control. The circuit-breaker auxiliary contact will then be connected to the Generator Loading Control or Import/Export Control and not to the 2301D Load Sharing And Speed Control. This discrete input is used to change the control operation by selecting a second set of dynamic terms to be used when the input is closed.

  • Page 26: Load Generator (Terminal 37)

    2301D/2301D-EC Digital Control Manual 26247 Load Generator (Terminal 37) The input switch or relay contact used to activate the Load Generator command connects to terminal 37. This discrete input will cause the Load Control Function to ramp to a distinct mode of operation. If the state of the input is “TRUE”, the Load Control Function will increase or decrease in order to achieve either Isochronous Load Sharing or Base Load operation.

  • Page 27: Analog Input #1 (Terminals 19-20)

    An input impedance of 250  is present when the 2301D is configured for a current input. For a voltage input option, the input impedance will be greater than 10 M. This input is not isolated from the other control inputs and outputs, and an isolation device must be installed if the transmitter output is not isolated.

  • Page 28: Analog Input #2 (Terminals 22-23)

    +12 Vdc or +24 Vdc source connected at terminals 39(+) and 40(–). They are isolated from the internal power supplies of the 2301D control. The outputs can be configured for the next parameters: ...

  • Page 29: Analog Output #1 (Terminals 16-17)

    Modbus RTU protocol, functioning as a Modbus Slave device, via RS-232 or RS-422 drivers, depending on the configuration. The 2301D-EC 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 30: Figure 2-3. Rs232 Pin Assignments For Serial Communication Cable

    2301D/2301D-EC Digital Control Manual 26247 RS-232 See Figure 2-3 for cable connection. Figure 2-3. RS232 Pin assignments for Serial Communication Cable RS-422 See Figure 2-4 for termination and cable connection example. Figure 2-4. Typical RS422 Communications Connections Woodward...

  • Page 31: Figure 2-5. Rs-422 Terminator Locations

    Manual 26247 2301D/2301D-EC Digital Control 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 32: Figure 2-6. Preferred Multipoint Wiring Using Shielded Twisted-Pair Cable With A Separate Signal Ground Wire

    2301D/2301D-EC Digital Control Manual 26247 Figure 2-6. Preferred Multipoint Wiring Using Shielded Twisted-pair Cable with a Separate Signal Ground Wire The SG (signal ground) connection is not required if signal ground is unavailable. Figure 2-7. Alternate Multipoint Wiring Using Shielded Twisted-pair Cable without...

  • Page 33: Installation Check-Out Procedure

    Manual 26247 2301D/2301D-EC Digital Control Installation Check-out Procedure With the installation completed as described in this section, perform the following check-out procedure before beginning the start-up adjustments in 0. Visual Inspection 1. Check the linkage between the actuator and the prime mover for looseness or binding.

  • Page 34: Chapter 3. Entering Control Set Points

    The connection of a computer is only required for calibration and setup of the 2301D control on a prime mover. The computer and Watch Window software is not required, and not necessary, for normal operation of the prime mover, unless Modbus is being used for monitoring.

  • Page 35: Figure 3-1. Null Modem Cable

    The 2301D default baud rate is 38400, which needs to be entered in the Servlink Network Options window. Servlink will be initialized correctly for all other port parameters except BAUD rate.

  • Page 36: Configure Menu Descriptions

    Save Application Settings icon. All the tunable values presently set in the control will be saved to a file and can be loaded into this 2301D control to reprogram it to the saved values or into another 2301D at a later time.
  • Page 37 Manual 26247 2301D/2301D-EC Digital Control 03 SPEED FUNCTION TYPE dflt = 1 (1, 4) This is the speed calculation where:  Speed function 1 is used for standard speed sensing for MPU sensors.  Speed functions 2 and 3 are not used.
  • Page 38 2301D/2301D-EC Digital Control Manual 26247 12 OVERSPEED SETTING dflt = 2000.00 (0.00, 4000) The maximum speed limit. The 2301D initiates a shutdown when the engine speed reaches this level. 13 RST TO RATED AT CB CLOSE dflt = TRUE (TRUE, FALSE) This resets the speed bias after the circuit breaker is closed and the speed setting returns to rated.
  • Page 39 Shows the function of input D. C**DISCRETE OUT OPTIONS** The 2301D-EC 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. Any of the four relays can also be programmed to function as a level switch.
  • Page 40 2301D/2301D-EC Digital Control Manual 26247 Parameters 11 thru 14 are only applicable for the 2301D-EC with Modbus (see Chapter 8, Communications): 11 = MODBUS RELAY #1 12 = MODBUS RELAY #2 13 = MODBUS RELAY #3 14 = MODBUS RELAY #4...
  • Page 41 Set to TRUE for reverse-acting actuators and FALSE for forward-acting actuators. Forward-acting actuators require current increase to increase fuel. Reverse-acting actuators require current decrease to increase fuel (reverse- acting actuators should always incorporate a mechanical ballhead backup governor, such as the Woodward EGB). Woodward...

  • Page 42: Service Menu Descriptions

    2301D/2301D-EC Digital Control Manual 26247 Service Menu Descriptions A**DISPLAY MENU** This is a display group for general monitoring of the engine/generator. 01 ENGINE SPEED (RPM) (monitor) Displays actual engine rpm. 02 CALC GENERATOR FREQ (Hz) (monitor) Displays the engine rpm converted to generator output frequency.
  • Page 43 Manual 26247 2301D/2301D-EC Digital Control 03 LOAD SHARING BIAS (RPM) (Monitor) This is the speed bias to the reference from the load sharing. 04 LOAD SIGNAL OUT (Vdc) (Monitor) The generator kW converted to load gain volts. 05 SYSTEM LOAD 0-3(Vdc) (Monitor) The total load voltage of all units on-line.
  • Page 44 2301D/2301D-EC Digital Control Manual 26247 04 ANALOG INPUT #2 FAIL (2) (Monitor) When TRUE indicates a signal input failure. 05 LOAD SENSOR FAIL (3) (Monitor) When TRUE indicates a load sensor failure. 06 LOAD SHARE LINE FAIL (4) (Monitor) When TRUE indicates a load share line failure.
  • Page 45 Manual 26247 2301D/2301D-EC Digital Control F**DISPLAY ANALOG I/O** This section displays the analog inputs to and the outputs from the control. 01 SPEED SENSOR INPUT (RPM) (Monitor) Displays actual engine speed. 02 LOAD SENSOR INPUT (KW) (Monitor) Displays the generator load in kilowatts.
  • Page 46 2301D/2301D-EC Digital Control Manual 26247 G**SPEED SETTINGS** Speed settings are the parameters that affect the prime mover speed reference. 01 START SPEED (RPM) dflt = 400.00 (1.00, 2100) The initial speed reference for the speed control before starting. Start speed must be set above cranking speed and below the speed achieved with the start fuel limit setting (light-off speed).
  • Page 47 Manual 26247 2301D/2301D-EC Digital Control 08 SPEED TRIM DEC TIME (SEC) dflt = 30.00 (1.00, 300.00) This is the time for the speed reference to ramp from the raise speed limit to the lower speed limit when using the Lower Speed switch input.

  • Page 48: Figure 3-2. Control Gain As A Function Of Speed Error

    2301D/2301D-EC Digital Control Manual 26247 03 ACTUATOR COMPENSATION 1 dflt = 12.00 (0.01, 100.00) Compensates for the actuator and fuel system time constant. Increasing Compensation increases actuator activity and transient performance. 04 WINDOW WIDTH 1 (RPM) dflt = 60.00 (1.00, 200.00) This is the magnitude (in rpm) of speed error at which the control automatically switches to fast response.
  • Page 49 Manual 26247 2301D/2301D-EC Digital Control 06 SPEED FILTER FREQ 1 (HZ) dflt = 20.00 (4.00, 20.00) Adjusts the cutoff frequency of a low-pass filter used on the engine speed sensing input (see Figure 3-3). To use this feature set the cutoff frequency below 15.9 Hz.
  • Page 50 2301D/2301D-EC Digital Control Manual 26247 Optimum performance is not necessarily obtained with the GAIN set to maximum (stable). In some cases, the gain must be reduced slightly to ensure stability under widely-varying conditions. Be prepared to change the dynamics settings since the actuator bump transient may stimulate instability.

  • Page 51: Figure 3-4. Typical Transient Response Curves

    Manual 26247 2301D/2301D-EC Digital Control Figure 3-4. Typical Transient Response Curves Woodward...
  • Page 52 2301D/2301D-EC Digital Control Manual 26247 J**Dynamics #1 5 Pt Gain** This menu and control function is enabled when Configure Menu: A**ENGINE & SPEED CONTROL** parameter 07 ENABLE 5 SLOPE GAIN MAP is TRUE and provides a 5-point curve as a function of prime mover load for the variable GAIN set point.
  • Page 53 Manual 26247 2301D/2301D-EC Digital Control 14 GAIN RATIO 1 dflt = 1.00 (1.00, 10.00) The ratio of the gain setting at steady state to the gain setting during transient conditions. The gain ratio operates in conjunction with the Window Width and gain adjustments by multiplying the gain set point by the gain ratio when the speed error is greater than the window width.
  • Page 54 2301D/2301D-EC Digital Control Manual 26247 02 DELAY DYN 2 ENABLE (SEC) dflt = 0.00 (0.00, 20.00) A delay time, in seconds, that dynamics #1 will continue to be used by the speed control after the CB contact. 03 DELAY DYN 1 ENABLE (SEC) dflt = 0.00 (0.00, 20.00)

  • Page 55: Figure 3-5. Non-Linear Valve Power Curve

    Manual 26247 2301D/2301D-EC Digital Control Gas Engine Setup The butterfly valve position of a gas engine is not linear in comparison to engine power output. In naturally-aspirated (non-turbocharged) engines, the position of the valve in comparison to engine output appears on a chart similar to Figure 3-5.

  • Page 56: Figure 3-7. Linearized Gain Plot

    2301D/2301D-EC Digital Control Manual 26247 Note that in both charts the valve position falls on a curve. The menu does not permit the construction of a curve. However, with four slope segments (5 break points) available, a rough approximation of the curve can be created (see Figure 3-7).
  • Page 57 Manual 26247 2301D/2301D-EC Digital Control The table below aids in collecting the data for the Gain Plot. When entering the values into the control, the software will not allow overlapping the breakpoint values (that is, Breakpoint A must be less than breakpoint B, which must be less than breakpoint C, etc).

  • Page 58: Figure 3-8. Start Limit Function

    2301D/2301D-EC Digital Control Manual 26247 L**FUEL LIMITERS 1/2** Fuel limiters restrain the fuel demand from the control to the actuator. 01 START FUEL LIMIT (%FD) dflt = 100.00 (15.00, 110.00) This limits the percent fuel demand when the engine is started. The limit is usually set at the fuel level required to start the engine.
  • Page 59 Manual 26247 2301D/2301D-EC Digital Control 07 TORQUE LIMIT MIN SPEED dflt = 100.00 (0.00, 100.00) This sets the maximum fuel demand at the minimum speed set point. 08 SPEED BRKPOINT TORQ LIM dflt = 800.00 (0.00, 4000.00) This sets the speed break point of the TLC. It should be adjusted to the rpm which represents the torque limit breakpoint.
  • Page 60 2301D/2301D-EC Digital Control Manual 26247 13 MAP DELAY TIME CONTACT dflt = 0.500 ( 0.00, 30.00) When the maximum air pressure limit is within the near fuel limit range for longer then this delay time an overload contact is activated.
  • Page 61 Manual 26247 2301D/2301D-EC Digital Control 12 ENABLE FAST LOAD RATE dflt = FALSE (TRUE, FALSE) Set to TRUE if the function to activate a faster loading ramp rate than the LOADING RATE entered above when the system load level is high.
  • Page 62 2301D/2301D-EC Digital Control Manual 26247 05 RMT SPEED REF INPUT (RPM) (monitor) Displays the speed reference based on analog input #2. This displayed value is the result of the input parameter, it is not limited by the ramp times or switch input logic.
  • Page 63 Manual 26247 2301D/2301D-EC Digital Control Q**DISCRETE OUT SETTINGS *8 The 2301D 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. And any of the four relays can also be programmed to function as a level switch.
  • Page 64 2301D/2301D-EC Digital Control Manual 26247 10 RELAY 2 OFF LEVEL= dflt = 0.000 (-32000.00, 32000.00) Enter the level switch OFF setting in engineering units. (Must be less than the ‘Relay On Level’). 11 RELAY 3 SELECTED AS (Monitor) Displays the function selected for terminal 43. This relay is selected in the...
  • Page 65 Manual 26247 2301D/2301D-EC Digital Control 22 RAMP @ MIN,CB DELAY (SEC) (Monitor) The time delay the load/unload ramp is at minimum value and the generator KW has not reached the unload KW trip level. R**ANALOG OUTPUT SETTINGS** This section sets the parameter to be sent to the analog output driver and the desired scaling of the output.
  • Page 66 Displays the status of the actuator output. T**KW INPUT CALIBRATION** This section calibrates the 2301D internal load sensor to correspond its output to measured kilowatts. This calibration allows the control to calculate the 100% load gain voltage, droop %, and load sharing ratio. For proper calibration the generator load should be as close as possible to required generator voltage and unity power factor.
  • Page 67 Manual 26247 2301D/2301D-EC Digital Control U**DISPLAY PID PARAMETERS** This is a display of the input to the PID control. The values entered in the Dynamic tuning section are normalized values and the values displayed here can be used for stability analysis if needed.
  • Page 68 2301D/2301D-EC Digital Control Manual 26247 W**LOADPULSE SETTINGS** To enable the Loadpulse, the kW calibration should be OK since the logic uses the load change as a parameter. The Loadpulse logic has been tested in August 2002 on a DG-set with a W200 engine.

  • Page 69: Figure 3-9. Lp Ramp

    03 APPLICATION NAME (Monitor) The name of the application. Y**COMM PORT (MODBUS)** These parameters are only applicable for the 2301D-EC with Modbus (see Chapter 8, Communications). The menu is used to setup the serial port for Modbus use. 01 PORT FAIL...
  • Page 70 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 71 Manual 26247 2301D/2301D-EC Digital Control 11 PARITY dflt = 1 (1, 3) Sets the Parity input defines protocol for the parity. If you selected 8 data bits select '1' for none: 1= OFF (none) 2= ODD 3= EVEN 12 PARITY IS SET FOR (Monitor) Shows the parity setting.

  • Page 72: Chapter 4. Initial Control Settings

    2301D/2301D-EC Digital Control Manual 26247 Chapter 4. Initial Control Settings Initial Prestart Settings Read this entire procedure before starting the prime mover. 1. RATED SPEED—Set to Generator synchronous speed. 2. Set the correct number of gear teeth in “Enter number of gear teeth”.

  • Page 73: Adjust For Stable Operation

    Manual 26247 2301D/2301D-EC Digital Control 4. Preset rated speed. When using a signal generator to verify the proper configuration setting: set the signal generator for the frequency of the speed sensor at rated speed, and connect it to terminals 25 and 26. (The rated speed frequency in Hz equals the rated prime mover speed in rpm times the number of teeth on the speed sensing gear divided by 60.) Put the Close For Rated contact in the...

  • Page 74: Dynamic Adjustment

    2301D/2301D-EC Digital Control Manual 26247 Dynamic Adjustment The object of the GAIN and RESET adjustment is to obtain the optimum, or desired, stable prime mover speed response. Connect a dc analog voltmeter to terminals 13(+) and 14(–) to monitor the actuator voltage.

  • Page 75: Start Fuel Limit Adjustment

    Manual 26247 2301D/2301D-EC Digital Control Start Fuel Limit Adjustment With the prime mover operating at rated speed and no load, note the Fuel Demand % displayed on the HMI. Set the Start Fuel Level 10% higher than the fuel demand noted above. Shut down the prime mover. Start the prime mover and observe the start time, overshoot of speed setting, and smoke emissions obtained.

  • Page 76: Phase Correction Procedure

    2301D/2301D-EC Digital Control Manual 26247 4. If the Load Signal Out Reading is within 10% of the above calculation, the PT/CT phasing is correct. If the phasing is incorrect, proceed to the Phase Correction Procedure. If the phasing appears correct, skip the Phase Correction Procedure and go to the Load Calibration Adjustment procedure.

  • Page 77: Figure 4-1. Temporary Wiring For Transformer Phase Correction

    CALIBRATION**. Observe 03 Gen Output (read 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 will only read a small negative value.
  • Page 78 2301D/2301D-EC Digital Control Manual 26247 4. Disconnect the phase C CT wires from terminals 8 and 9. Connect and tape these two wires together as in Step 3. 5. Connect the two wires from the phase A CT to the phase A input terminals 4 and 5.

  • Page 79: Load Calibration 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 80: Chapter 5. Alternative Dynamic Adjustments

    2301D/2301D-EC Digital Control Manual 26247 Chapter 5. Alternative Dynamic Adjustments Introduction This procedure, based on the Zeigler-Nichols Method, is an empirical method to find first-pass settings for gain, reset, and actuator compensation in a PID controller. First, the controller is set up to act as a proportional-only controller by removing the effect of the reset and actuator compensation terms.

  • Page 81: Figure 5-1. Trend Tool Trace Example 1

    Manual 26247 2301D/2301D-EC Digital Control 6. Disable the Reset (integral) and Compensation (derivative) dynamic actions by setting both to 0.01. 7. Disable Window Width by setting the Gain Ratio at 1.0 and the Window Width at 60 rpm. 8. Disable Gain Slope by setting it at 0.0.

  • Page 82: Figure 5-2. Trend Tool Trace Example 2

    2301D/2301D-EC Digital Control Manual 26247 Figure 5-2. Trend Tool Trace Example 2 15. Bump the actuator (you can use a larger bump this time) to test control response. Figure 5-2 shows the expected response. Figure 5-3. Trend Tool Trace Example 3 16.

  • Page 83: Figure 5-4. Trend Tool Trace Example 4

    Manual 26247 2301D/2301D-EC Digital Control Gain, Window Width, and Gain Ratio Adjustments 19. When extra load transient response improvement is needed, adjust the Gain and/or Gain Ratio and Window Width. The following traces show examples of the process used to obtain optimum transient response settings. The step that increases Gain may be skipped in favor of Window Width and Gain Ratio adjustments only.
  • Page 84 2301D/2301D-EC Digital Control Manual 26247 22. Figure 5-6 shows results of ultimately increasing Gain Ratio from 1.0 to 3.0 and decreasing Window Width from 60 rpm to 5 rpm. Overall peak rpm has been reduced approx 30 rpm. The fuel demand is steeper with little overshoot and roll-off.

  • Page 85: Chapter 6. Description Of Operation

    This chapter provides an overview of the features and operation of the 2301D Load Sharing and Speed Control. The 2301D 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 86: Control Dynamics

    2301D/2301D-EC Digital Control Manual 26247 Figure 6-1. Speed Control System The digital control compares the numeric output of the speed sensor to the numeric number of the speed reference at the summing junction. If the speed is lower or higher than the reference, a response calculated by the PID (Proportional-Integral-Derivative control) is sent to the actuator driver calling for an increase or decrease in actuator current.

  • Page 87: Minimum Fuel Function

    Manual 26247 2301D/2301D-EC Digital Control Constant dynamics refers to dynamics parameters that will remain constant as entered and do not vary with engine speed. Dynamics may be configured to vary with load by using the 5-Gain mapped dynamics. Constant dynamics are useful for fuel systems and processes that tend to be equally stable throughout the prime movers speed and load range.

  • Page 88: Maximum Fuel Function

    2301D/2301D-EC Digital Control Manual 26247 Maximum Fuel Function The Maximum Fuel Function is a software-adjustable maximum fuel limit on the fuel demand. It is used to set a maximum position of the actuator. This is generally used to prevent engine overloading or other situations where the maximum fuel delivered to the engine should be limited.

  • Page 89: Manifold Air Pressure Limiter

    Setting up the MAP limiter see service menu M**Fuel Limiters 2/2**. Speed/Load Reference and Ramps The 2301D control provides local control with discrete inputs for raising and lowering speed/load. For remote speed/load setting, the control provides a remote reference analog input. Input functions are enabled as follows: ...

  • Page 90: Figure 6-3. Remote Speed Reference

    2301D/2301D-EC Digital Control Manual 26247 The idle speed set point is provided for engine warm-up or cool-down cycles. Idle speed may be set equal to or less than the rated speed set point. Idle is independent of the lower limit set point and may be set at a lower speed. The idle speed set point is selected when the Rated contact is open, if the start reference is removed either by configuration or engine speed above start speed.

  • Page 91: Speed Bias And Synchronizer Summing

    Manual 26247 2301D/2301D-EC Digital Control Speed Bias and Synchronizer Summing There are three functions that can change the speed reference from the set point that was determined in the above paragraphs:  Synchronizer bias input  Load bias input ...
  • Page 92 2301D/2301D-EC Digital Control Manual 26247 When the system load is high, the oncoming generator will load at a fast rate to assume it share of the load quicker. In the isochronous mode (CB Aux input closed), closing the load contact ramps the load set point from no-load to the load sharing setting.

  • Page 93: Droop Function

    Manual 26247 2301D/2301D-EC Digital Control Soft Unloading and Open Generator Breaker Relay Output If the load command discrete input contact is opened (unload) while the breaker (CB AUX) input contact is closed, the generator will soft unload from the present load level to the unload trip level.

  • Page 94: Figure 6-4. Paralleling System

    2301D/2301D-EC Digital Control Manual 26247 Power System Management Concepts This section provides a summary review of droop, isochronous, droop/isochronous, isochronous load sharing, and base load operating concepts. These concepts provide an understanding for power management. Paralleling There are two basic methods used for paralleling: droop, where speed decreases with load increase, and isochronous, where speed remains constant with load increase.

  • Page 95: Figure 6-5. Droop Mode

    Manual 26247 2301D/2301D-EC Digital Control When the Baseload contact connected to terminal 38 is closed proportional load sharing is terminated and the load is ramped either up or down to the baseload reference setting. Droop mode allows operation of a generator on an infinite bus or in parallel with other engine generator units using hydromechanical governors.

  • Page 96: Droop/Isochronous Load Sharing On An Isolated Bus

    2301D/2301D-EC Digital Control Manual 26247 Isochronous Mode Isochronous means repeating at a single rate or having a fixed frequency or period. A generator set operating in the isochronous mode will operate at the same set frequency regardless of the load it is supplying, up to the full load capability of the generator set (see Figure 6-6).

  • Page 97: Isochronous Load Sharing On An Isolated Bus

    Manual 26247 2301D/2301D-EC Digital Control Figure 6-7. Droop/Isochronous Load Sharing Figure 6-8. Isochronous Load Sharing Isochronous Load Sharing on an Isolated Bus Isochronous load sharing operates all generator sets in a system in the isochronous mode. Load sharing is accomplished by adding a load sensor to each electric isochronous governor.

  • Page 98: Actuator Droop

    Droop is dependent on load (this is the measured kW) or on the actuator position. As already mentioned, droop based on the measured load in kW by the PT’s and CT’s (terminals 1 to 9) of the 2301D is used. With actuator droop the speed reference is decreased when the actuator output increases.

  • Page 99: Chapter 7. Troubleshooting

    Manual 26247 2301D/2301D-EC Digital Control Chapter 7. 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 100: Control Test And Calibration

    Manual 26247 Control Test and Calibration General Do the following checks on the 2301D control. Then verify the functioning of set points and adjustments. 1. Connect a computer to the communication port. Start Watch Window HMI software in accordance with the instructions in Chapter 4. Verify that correct voltage and polarity are applied to the control.

  • Page 101: Troubleshooting Charts

    (respond). Make resistance checks at the actuator. Coil resistance on Woodward actuators is approximately 35 . (Read with leads at terminals 13 and 14 disconnected.) Start fuel limit set too low.
  • Page 102 2301D/2301D-EC Digital Control Manual 26247 Symptom Cause Solution Prime mover will not Speed sensor signal not clearing Check wiring for proper connection. Check start. Actuator not failed speed signal circuit. shields for proper installation. Check the moving to start fuel Display Menu for Engine Speed reading.
  • Page 103 1.0 Vrms. If magnetic pickup should fail and the override failed speed signal circuit is disabled, the 2301D control will call for maximum fuel. 2301D control. Control the prime mover manually at rated speed. If the Engine Speed reading in the...
  • Page 104 2301D/2301D-EC Digital Control Manual 26247 Symptom Cause Solution Prime mover does not Faulty Close for Rated contact. Check Close for Rated contact. Remove decelerate when Close wire from terminal 32. Prime mover should for Rated contact is decelerate. open. LOW IDLE SPEED set the same Check the Speed Settings Menu.
  • Page 105 If the problem cannot be resolved by these checks, it will be necessary to remove the 2301D control 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 106 2301D/2301D-EC Digital Control Manual 26247 Symptom Cause Solution Prime mover will not Prime mover may not be receiving Check actuator linkage to fuel controlling stabilize at rated no load fuel as called for by the actuator mechanism for any lost motion, binding, or speed.

  • Page 107: Chapter 8. Communications

    Monitor Only The Modbus communication port is not programmed (factory default) although it continues to update all information to all registers. This allows the 2301D 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’s defaulted protocol settings (parity, stop bits, etc.), this device can be...

  • Page 108: Modbus Communication Mode

    The protocol and Modbus device number are set in the Program Mode and can be adjusted in Service Mode. The 2301D control is programmed to function as a slave unit only. As a slave unit, the 2301D will only respond to a transaction request by a master device.

  • Page 109: Modbus Function Codes

    This time-out is defaulted to 4 seconds and only applies to units using both monitor and control (adjustable in Service Mode). Port Adjustments Before the 2301D will communicate with the master device, the communication parameters must be verified. These values are set in Service Mode. Parameter...

  • Page 110: 2301D Control Modbus Addresses

    The discrete values are a 1 bit binary, on or off value, and the analogs are 16 bit values. All read/write registers are interpreted by the 2301D as signed 16 bit integer values. Since Modbus can only handle integers, values that require a decimal point in the Modbus Master Device are multiplied by a scaling constant before being sent by the 2301D.

  • Page 111: Modbus Scale Factors

    Input registers are analog values that are readable from, but not writable to, the 2301D. Turbine speed is an example of an analog read value. The values of the input registers are stored internally to the control as floating point numbers representing engineering units (kPa or rpm).

  • Page 112: Start Command Through Modbus

    2301D/2301D-EC Digital Control Manual 26247 The Emergency Shutdown and Controlled Shutdown commands do not influence the operation of the Trip Relay. Start Command Through Modbus The start-up of a turbine is possible from a command through the Modbus. The open/close of contact inputs (RUN/SHUTDOWN, etc.) serve as the independent command in Modbus BW.

  • Page 113: Chapter 9. Product Support And Service Options

    A current list of Woodward Business Partners is available at www.woodward.com/directory. Product Service Options Depending on the type of product, the following options for servicing Woodward products may be available through your local Full-Service Distributor or the OEM or Packager of the equipment system.

  • Page 114: Returning Equipment For Repair

    To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

  • Page 115: Engineering Services

    Field Service engineering on-site support is available, depending on the product and location, from one of our Full-Service Distributors. The field engineers are experienced both on Woodward products as well as on much of the non- Woodward equipment with which our products interface.

  • Page 116: Technical Assistance

    Manual 26247 Technical Assistance If you need to contact technical assistance, you will need to provide the following information. Please write it down here before contacting the Engine OEM, the Packager, a Woodward Business Partner, or the Woodward factory: General...

  • Page 117: Appendix A. Service/Configuration Chart

    Manual 26247 2301D/2301D-EC Digital Control Appendix A. Service/Configuration Chart Configure Menus PROGRAMMED DEFAULT TUNABLE RANGE CONFIGURE MENU VALUE VALUE MIN. MAX. A**ENGINE & SPEED CONTROL** 01 ENTER RATED SPEED (RPM) 4000 02 ENTER NUM OF GEAR TEETH 03 SPEED FUNCTION TYPE...

  • Page 118: Service Menus

    2301D/2301D-EC Digital Control Manual 26247 TUNABLE RANGE PROGRAMMED DEFAULT CONFIGURE MENU VALUE VALUE MIN. MAX. 03 REVERSE ACTING ACTUATOR FALSE TRUE FALSE Service Menus PROGRAMMED DEFAULT TUNABLE RANGE SERVICE MENU VALUE VALUE MIN. MAX. A**DISPLAY MENU** 01 ENGINE SPEED (RPM)
  • Page 119 Manual 26247 2301D/2301D-EC Digital Control TUNABLE RANGE PROGRAMMED DEFAULT SERVICE MENU VALUE VALUE MIN. MAX. 13 INTERNAL CB AUX RELAY Monitor F**DISPLAY ANALOG I/O** 01 SPEED SENSOR INPUT (RPM) Monitor 02 LOAD SENSOR INPUT (KW) (Monitor 03 ANIN #1, INPUT TYPE:...

  • Page 120: Figure 3-3. Speed Filter

    2301D/2301D-EC Digital Control Manual 26247 TUNABLE RANGE PROGRAMMED DEFAULT SERVICE MENU VALUE VALUE MIN. MAX. 14 GAIN RATIO 1 1.000 1.00 10.00 15 SPEED FILTER FREQ 1 (HZ) 20.000 4.00 20.00 16 BUMP ACT TRIG (T THEN F) FALSE TRUE...
  • Page 121 Manual 26247 2301D/2301D-EC Digital Control TUNABLE RANGE PROGRAMMED DEFAULT SERVICE MENU VALUE VALUE MIN. MAX. 11 UNLOADING RATE (KW/SEC) 20.000 1.00 600.00 12 ENABLE FAST LOAD RATE FALSE TRUE FALSE 13 FAST RAMP ENABLE LOAD(%) 80.000 1.00 110.00 14 FAST RAMP RATE (KW/SEC) 60.000...
  • Page 122 2301D/2301D-EC Digital Control Manual 26247 TUNABLE RANGE PROGRAMMED DEFAULT SERVICE MENU VALUE VALUE MIN. MAX. 06 DISCRETE OUTPUT #2 Monitor 07 TURN ON DO3 FALSE TRUE FALSE 08 DISCRETE OUTPUT #3 Monitor 09 TURN ON DO4 FALSE TRUE FALSE 10 DISCRETE OUTPUT #4...
  • Page 123 Manual 26247 2301D/2301D-EC Digital Control TUNABLE RANGE PROGRAMMED DEFAULT SERVICE MENU VALUE VALUE MIN. MAX. 14 DRIVER IS SET FOR Monitor 15 TIME OUT (SEC) 2.000 0.00 100.00 16 NETWORK ADDRESS 17 ENABLE MODBUS CONTROL FALSE TRUE FALSE 18 USE MODBUS ANALOG CNTRL...

  • Page 124: Appendix B. Modbus Communication List

    2301D/2301D-EC Digital Control Manual 26247 Appendix B. Modbus Communication List This Modbus Communication List is applicable for software number 9927-1208. Boolean Writes Addr Input Description Multiplier 0:0001 Reset Control 0:0002 0:0003 Stop 0:0004 Failed Speed Override ON 0:0005 Failed Speed Override OFF...
  • Page 125 Manual 26247 2301D/2301D-EC Digital Control Boolean Reads Addr Input Description 1:0001 ALARM.TRIP.LATCH1 Shutdown Status 1:0002 ALARM.LIST.LATCH1 Alarm Status 1:0003 ALARM.TRIP.SEL_1 Overspeed 1:0004 ALARM.TRIP.SEL_2 MPU Failure 1:0005 ALARM.TRIP.SEL_3 Analog input #1 failure (if config) 1:0006 ALARM.TRIP.SEL_4 Analog input #2 failure (if...
  • Page 126 2301D/2301D-EC Digital Control Manual 26247 Analog Reads Addr Input Description Multiplier 3:0001 ALARM.FIRST_SD.OUT_1 Shutdown first out Indication 3:0002 ALARM.FIRST_AL.OUT_1 Alarm first out Indication 3:0003 SPEED.ENG_SPEED.A_NAME Engine Speed (RPM) 3:0004 SR.S_REF2.ADD Speed Reference (RPM) 3:0005 LSEN.KWRU.ADD Engine load (kW) 3:0006 IO_SET.ACT_DR.A_SW...
  • Page 127 Manual 26247 2301D/2301D-EC Digital Control Woodward...

  • Page 128: 2301D / 2301D-Ec Control Specifications

    2301D / 2301D-EC Control Specifications Woodward Part Numbers: 8273-138 2301D-EC Load Sharing and Speed Control, 24Vdc input, with Modbus, Ordinary Locations 8273-139 2301D-EC Load Sharing and Speed Control, 24Vdc input, with Modbus, Hazardous Locations 8273-140 2301D Load Sharing and Speed Control, 24Vdc input, Ordinary...

  • Page 129: Declarations

    Declarations...
  • Page 130 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.

This manual is also suitable for:

2301d-ec

Table of Contents

Save PDF