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Manual 36523B

DPG-2201-00X Digital Controllers

Woodward

3.21 Percent Droop (optional)

The percent droop parameter is used to select droop mode operation and specify

the percentage of droop required. When the percent droop parameter is set to

zero (the default setting) then droop mode is not active. Droop mode is active

when this parameter is set to any value from 1 to 100, which corresponds to 0.1%

to 10.0% droop.

The following formula determines the no load droop speed.

[(selected_set_speed) / ((1000 – value_of_%_DROOP) / 1000)] =

no_load_droop_speed

For example: If 5% droop is desired, set the percent droop value to 50. Now if the

selected set speed is 1800 RPM then the no load droop speed will be:

[(1800 RPM) / ((1000 – 50) / 1000)] = 1800 RPM / 0.95 = 1895 RPM

NOTE: This parameter can only be modified during the Droop Calibration

Procedure. See the Calibration Instructions chapter for more information.

Droop mode relies on knowing the actuator position. The actuator’s position

corresponds to the amount of fuel being delivered to the engine. The DPG-2201-

00X controller senses electrical current flow through the actuator to determine its

position. This method of position sensing does not work with all actuators.

3.22 No Load Calibration (optional)

The No Load Calibration value is learned during the Droop Calibration Procedure

and should not be set manually. Once calibrated, the no load calibration value

indicates the percentage of electrical current, relative to the measurable

maximum, that must flow through the actuator to run the engine at the no load

droop speed.

The factory default value is zero, so if droop mode is to be used, this parameter

must be calibrated. The no load calibration value must be less than the full load

calibration value for proper droop operation. If after performing the Droop

Calibration Procedure the no load calibration value is greater than the full load

calibration then the droop function cannot be used. Some actuators may have a

current versus position curve that is incompatible with this controller’s method of

determining actuator position.

NOTE: This parameter is only modified during the Droop Calibration

Procedure. See the Calibration Instructions chapter for more information.

3.23 Full Load Calibration (optional)

The Full Load Calibration value is learned during the droop calibration procedure

and should not be set manually. Once calibrated, the full load calibration value

indicates the percentage of electrical current, relative to the measurable

maximum, that must flow through the actuator to run the engine at the selected

set speed when a full load is being applied to the generator.

The factory default value is 1000, so if droop mode is to be used, this parameter

must be calibrated. The full load calibration value must be greater than the no load

calibration value for proper droop operation. If after performing the Droop

Calibration Procedure the full load calibration value is less than the no load

calibration value then the droop function cannot be used. Some actuators may

Содержание DPG-2201-00 Series

Страница 1: ...User Manual DPG 2201 00X Digital Controllers APECS Programmable Controllers for Isochronous Generators with Load Sharing Capability Manual 36523B...

Страница 2: ...t be installed in the DC power buss prior to the control s power connection Electronic controls contain static sensitive parts Observe the following precautions to prevent damage to these parts Discha...

Страница 3: ...t Speed B optional 13 3 10 OVG Idle Speed optional 13 3 11 Gain Factor required 13 3 12 Speed Filter required 14 3 13 Idle Hold Time optional 14 3 14 Accel Rate optional 14 3 15 Decel Rate optional 15...

Страница 4: ...Data Collection 31 CHAPTER 5 CALIBRATION INSTRUCTIONS 32 Basic Adjustments 32 Tuning Methodology 32 Droop Calibration Procedure 33 CHAPTER 6 INSTALLATION INSTRUCTIONS 35 Terminal Descriptions 35 Recom...

Страница 5: ...to 89 336 EEC COUNCIL DIRECTIVE of 03 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility EMC Limitations All cabling for this unit is limited to l...

Страница 6: ...erials such as plastic or Styrofoam cups cup holders cigarette packages cellophane wrappers vinyl books or folders plastic bottles and plastic ash trays away from the control the modules and the work...

Страница 7: ...tion and deceleration ramp rates startup and torque limits idle speed and idle hold time This controller can also provide droop speed control with 100 user selectable droop levels The controller s int...

Страница 8: ...h See wiring diagrams for specific cable types required Mechanical Ambient Operating Temperature 40 F to 185 F 40 C to 85 C Sealing Oil water and dust resistant via conformal coating and die cast encl...

Страница 9: ...er for viewing and editing This mode is active when the 2 digit value being displayed is blinking The value displayed is a parameter s identification ID number The controller s label lists each user a...

Страница 10: ...RAMETER SELECT MODE and ignore changes made to the parameter s value ENTER Save the parameter s new value and return to PARAMETER SELECT MODE INC DEC Simultaneously Use to display the upper digits of...

Страница 11: ...el lists 34 parameters then pressing the DEC key when the display is blinking the value 01 will cause the display to wrap around to the last parameter listed which in this case is 34 and blink this ne...

Страница 12: ...can be modified using the INC key or the DEC key No blinking means that editing is not allowed or is password protected The left digit s decimal point is used to indicate that the upper 2 digits of a...

Страница 13: ...parameter you are editing is currently 1800 then after pressing the DEC key the parameter s new value will be 1799 When values exceeding 9 999 are to be displayed the controller uses the hexadecimal n...

Страница 14: ...le Parameter 5 PROPORTIONAL is described in subsection 3 5 chapter 3 subsection 5 The following table lists each of the parameters and their default minimum and maximum values Note that several of the...

Страница 15: ...Rate 1000 1 11000 16 Startup Rate 1000 1 11000 17 Startup Limit 1000 0 1000 18 Torque Limit 1000 0 1000 19 Integral Low Limit 0 0 Integral High Limit 20 Integral High Limit 99 Integral Low Limit 99 21...

Страница 16: ...the above formula can be used to convert from RPM to Hertz MpuHertz s eth NumberOfTe EngineRPM 60 3 2 Set Speed A required SET SPEED A is the controller s target speed when the SPEED SEL input termina...

Страница 17: ...nd the lower case letter b to represent 11000 For example If SET SPEED B is set to 11000 then the upper 2 digits will be displayed by the controller as b 0 and the lower 2 digits will display 00 3 4 I...

Страница 18: ...a speed error the difference between the target speed and the actual speed The proportional gain controls the size of the controller output response to a step change in the speed error 3 6 Integral r...

Страница 19: ...improve overall engine speed control 3 8 OVG Set Speed A required This overall gain acts as the multiplier on the three PID terms proportional integral and derivative when Set Speed A is selected as...

Страница 20: ...tational mass the less filtering is needed The less rotational mass the more filtering is needed Typically the value 24 works well on small 3 or 4 cylinder engines A value of 16 is recommended for 6 o...

Страница 21: ...mines the value needed by Decel Rate to decrease the engine speed from Set Speed A to Set Speed B in 1 5 seconds Set Speed A Set Speed B N seconds decel_rate_value in Hertz per second 4170 3475 1 5 46...

Страница 22: ...lues by substituting the Hertz speed values with RPM speed values 3 17 Startup Limit optional The startup limit parameter is used to limit the fuel supplied to the engine during startup The default va...

Страница 23: ...via the PID terms 3 20 Integral High Limit optional The integral high limit prevents integral windup in the positive direction In other words the integral high limit parameter is used to reduce over...

Страница 24: ...ge of electrical current relative to the measurable maximum that must flow through the actuator to run the engine at the no load droop speed The factory default value is zero so if droop mode is to be...

Страница 25: ...s displayed The user can then edit the value UNLOCKED This setting means that password protection is active but parameter editing is allowed Entering a value of 30 while in LOCKED mode will UNLOCK par...

Страница 26: ...Set Speed B Min optional Set Speed B Min is used to set the lowest value allowed for adjustments of Set Speed B This parameter can be set to any value within the range bordered by 10 Hertz or its RPM...

Страница 27: ...speed or output excessive smoke because the startup ramp having already completed no longer controls the rate of engine speed increase If the Startup Speed value is set too high above the active set s...

Страница 28: ...n needed to start the engine There are two ways to determine a good value to use for this parameter 1 Use a meter to measure the duty cycle across the ACT terminals of the controller while the engine...

Страница 29: ...ort to your computer s serial port during service and initial programming Features Universal PST features include Automatic configuration to each DPG when communications are established Read write acc...

Страница 30: ...ersal PST The Universal PST application is also available to download from the Woodward Software Products page at www woodward com IC Software Use the Select a Product drop down menu in the center of...

Страница 31: ...pdate your system then you can not use the Universal PST application on this computer Read the setup program s instructions carefully as they appear and respond as needed The installation may take as...

Страница 32: ...rtup screen Universal PST User Interface Overview Universal PST has two main display modes Table View the main startup screen Chart View TABLE VIEW In Table View the user can View the current values f...

Страница 33: ...are also on the main parameter setup table Press the Data File button to open a file for saving chart recorder data Press the Data Reset button to start data collection to the open file at the beginni...

Страница 34: ...uct that is currently in communication with the PC Information about the Universal PST for DPG application Parameter Setup The Parameter Setup panel displays a table where each row shows the Name of a...

Страница 35: ...e Table View IMPORTANT If the communication cable is unplugged from a DPG and plugged into a different DPG while the Universal PST application is still running then the Read All button must be pressed...

Страница 36: ...ions The Vertical Scale options provide three different ways to view engine speed data The 0 to 12000 Hz option is the default and sets the vertical axis range to its absolute minimum and maximum meas...

Страница 37: ...reasing numeric suffixes The first 60 000 data points are saved in filename00 csv and the next 60 000 data point are saved in filename01 csv and so on until a million data points are collected This is...

Страница 38: ...ler tuned and the engine running smoothly It is recommended that you work with them first and leave all the other parameters at their default values until you are satisfied with the basic engine tunin...

Страница 39: ...off transition Therefore during steps 3 5 you should temporarily increase the integral to get the engine speed back to the set speed and then reset the integral to a lower value again while working to...

Страница 40: ...t speed Universal PST Proceed to Step 6 Step 6 Now apply full load to the engine and allow the speed to stabilize Assumes the controller was previously tuned Step 7 User Interface Wait 5 seconds then...

Страница 41: ...peed remotely 12 INC SPEED Digital input used to increase the selected set speed remotely 13 5 Vdc OUT Supply voltage for the digital inputs DC power buss cable must be less than 10 meters 32 80 feet...

Страница 42: ...r DPG 2201 00X controllers is limited to less than 30m 98 4 Power cabling is limited to less than 10m 32 8 in total length The wiring diagrams below show specific cable types required DPG 2201 001 DPG...

Страница 43: ...e replace unit Engine Does Not Start Actuator leads not connected or shorted No fuel source Turn on fuel source Battery voltage is low Charge or replace the battery Set speed is lower than crank speed...

Страница 44: ...lower Startup Limit setting Low MPU signal voltage It should read 2 0 VRMS minimum Sluggish Response to Load Changes Gain too low Improve PID tuning Speed filter setting is too high Engine Instability...

Страница 45: ...structured program and includes the full standard Woodward product warranty Woodward Product and Service Warranty 5 01 1205 This option allows you to call in the event of an unexpected outage or in a...

Страница 46: ...be returned to Woodward for repair please contact Woodward in advance to obtain a Return Authorization Number When shipping the item s attach a tag with the following information name and location whe...

Страница 47: ...ls include the following information the part number s XXXX XXXX that is on the enclosure nameplate the unit serial number which is also on the nameplate How to Contact Woodward In North America use t...

Страница 48: ...t us via telephone email us or use our website and reference Customer Services and then Technical Support Product Training is available at many of our worldwide locations standard classes We also offe...

Страница 49: ...gaseous steam etc Rating Application Control Governor Information Please list all Woodward governors actuators and electronic controls in your system Woodward Part Number and Revision Letter Control...

Страница 50: ...O 80522 1519 USA 1000 East Drake Road Fort Collins CO 80525 USA Phone 1 970 482 5811 Fax 1 970 498 3058 Email and Website www woodward com Woodward has company owned plants subsidiaries and branches a...

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