Baldor MN1903 installation manual Kvelff

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The analog demand output is controlled by a 12-bit DAC, which can create output voltages in the range -10V to +10V. This means a maximum output of +10V corresponds to a DAC value of 2048. The value of KVELFF is calculated by dividing 2048 by the number of quadrature counts per servo loop, so:

KVELFF

=

2048 / 200

=10.24

5.Click in the KVELFF box and enter the value.

The calculated value should give zero following error in normal operation. Using values greater than the calculated value will cause the controller to have a following error ahead of the desired position. Using values less than the calculated value will cause the controller to have following error behind the desired position.

6.In the Move Type drop down box, check that the move type is set to Trapezoid.

7.Click in the Distance box and enter a distance for the step move. It is recommended to set a value that will cause the motor to make a few revolutions, for example 10.

Note: The distance depends on the scale set in section 5.3.3. If you set a scale so that units could be expressed in revolutions (or other unit of your choice), then those are the units that will be used here. If you did not set a scale, the amount you enter will be in encoder counts.

8. Click Go.

The NextMove PCI will perform the move and the motor will turn. As the soon as the move is completed, WorkBench v5 will download captured data from the NextMove PCI. The data will then be displayed in the Capture window as a graph.

Note: The graph that you see will not look exactly the same as the graph shown here! Remember that each motor has a slightly different response.

MN1903

Operation 5-23

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Contents NextMove PCI Motion Controller Page Contents Operation Appendices Iv Contents MN1903 General Information Precautions Safety NoticeMN1903 Introduction NextMove PCI featuresIntroduction MN1903 Receiving and inspection InstalledIdentifying the catalog number Catalog number PCI001Units and abbreviations PhaseIntroduction Other information needed for installationHardware requirements Tools and miscellaneous hardwareLocation requirements This completes the basic installation InstallationInstalling the NextMove PCI card NextMove PCI Expansion card and can Bracket boardBasic Installation MN1903 Outline 100-pin edge connectorPin Signal 1 100-pin connector pin assignment100-pin connector pin assignment Analog I/O Pin Name MintMT keyword / description Analog inputsLocation Analog input wiring, AIN0 shown Pin Name Description Analog outputs Drive Demand/CommandDigital input arrangement Input Common Breakout module connectorDigital I/O Stepperio Pin Name MintMT keyword Common Description Digital inputsINX.4 Digital input circuit fast interrupts Digital outputs OUTX.0 Encoder interfaces X12, X13, X14, X15 Other I/OEncoder input frequency Power Relay connections Relay and can powerPin X10 Name X11 Name Description Stepper drive outputs X10Cable length Maximum bit Resistance Conductor Rate Area Can Connections1 CAN1 CANopen 2 CAN2 Baldor can Baldor proprietary can interface using a RJ45 connectorSystem watchdog Reset statesEmulator connection Example minimum system wiring Connection summary minimum system wiringModule Signal Connector This completes the input/output wiringConnector details for minimum system wiring shown in Figure Breakout Pin Name FunctionInput / Output MN1903 Drivers\nmPCI\win9x Installing the driver software Windows 95, 98 and MEInstalling the driver software Windows Installing the driver software Windows NT\start Installing WorkBenchStarting WorkBench MN1903 Operation Operation MN1903 Help file WorkBenchChoosing an axis 8 axis card Configuring an axisChoosing an axis 1, 2, 3 and 4 axis cards Selecting a scale Setting the drive enable output Testing the drive enable output Testing the drive command output Servo axis testing and tuningAn introduction to closed loop control Summary, the following rules can be used as a guide NextMove PCI servo loop Selecting servo loop gains Servo axis tuning for current controlMN1903 Operation Underdamped response Underdamped responseOverdamped response Overdamped responseCritically damped ideal response Critically damped responseServo axis eliminating steady-state errors Calculating Kvelff Servo axis tuning for velocity controlKvelff Correct value of Kvelff Adjusting Kprop Correct value of Kprop JOG.0=2 Stepper axis testingDigital input configuration Digital input/output configurationDigital output configuration Saving setup information 10.1Loading saved information Operation MN1903 SupportMet feature Problem diagnosisStatus and can LEDs NextMove PCI indicatorsMotor control Symptom CheckCommunication Output polarity Mechanical specifications Digital inputs X1 Encoder interfaces X12 Relay output11Baldor can interface Stepper outputs X1010CANopen interface NextMove PCI Expansion card NextMove PCI Expansion cardMain Expansion cards Axis numbering when using expansion cardsWith no One 4-axis One 8-axis Two 4-axis Expansion Expansion cardExpansion card status LEDs Catalog number Description PCI003-501 NextMove PCI Breakout moduleCBL021-501 CBL021-503NextMove PC system adapter Digital output modulesSpares Catalog Description Number OPT025-508Baldor can nodes Encoder Splitter/Buffer board NextMove PCI can Bracket boardCatalog Description Number OPT008-501 OPT029-501Accessories MN1903