Baldor MN1903 installation manual Servo axis testing and tuning, Testing the drive command output

Page 54

5.4 Servo axis - testing and tuning

This section describes the method for testing and tuning a servo axis. To test a stepper axes, go straight to section 5.8.

5.4.1 Testing the drive command output

This section tests the operation and direction of the axis command output. It is recommended that the motor is disconnected for this test.

1.Check that the Drive enable button is pressed (down).

2.In the Toolbox, click Application then click the Edit & Debug icon.

3.Click in the Command window.

4.Type:

TORQUE.0=5

where 0 is the axis (demand output) to be tested. In this example, this should cause a demand of +5% of maximum output (0.5V) to be produced at the Demand 0 output (breakout module connector X7, pin 1).

See section 4.3.2 for details of the demand outputs. In WorkBench v5, look at the Spy window located on the right of the screen. The virtual LED Command display should show 5 (approximately). If there seems to be no command output, check the electrical connections between the breakout module and the drive.

5.To repeat the tests for negative (reverse) demands, type:

TORQUE.0=-5

This should cause a demand of -5% of maximum output (-0.5V) to be produced at the Demand 0 output.

5-12 Operation

MN1903

Image 54
Contents NextMove PCI Motion Controller Page Contents Operation Appendices Iv Contents MN1903 General Information Safety Notice PrecautionsNextMove PCI features MN1903 IntroductionIntroduction MN1903 Identifying the catalog number InstalledReceiving and inspection Catalog number PCI001Phase Units and abbreviationsHardware requirements Other information needed for installationIntroduction Tools and miscellaneous hardwareLocation requirements Installing the NextMove PCI card InstallationThis completes the basic installation NextMove PCI Expansion card and can Bracket boardBasic Installation MN1903 100-pin edge connector Outline1 100-pin connector pin assignment Pin Signal100-pin connector pin assignment Analog I/O Analog inputs LocationPin Name MintMT keyword / description Analog input wiring, AIN0 shown Analog outputs Drive Demand/Command Pin Name DescriptionInput Common Breakout module connector Digital I/ODigital input arrangement Stepperio Digital inputs Pin Name MintMT keyword Common DescriptionINX.4 Digital input circuit fast interrupts Digital outputs OUTX.0 Other I/O Encoder interfaces X12, X13, X14, X15Encoder input frequency Power Relay and can power Relay connectionsStepper drive outputs X10 Pin X10 Name X11 Name DescriptionCan Connections Cable length Maximum bit Resistance Conductor Rate Area1 CAN1 CANopen Baldor proprietary can interface using a RJ45 connector 2 CAN2 Baldor canReset states Emulator connectionSystem watchdog Connection summary minimum system wiring Example minimum system wiringConnector details for minimum system wiring shown in Figure This completes the input/output wiringModule Signal Connector Breakout Pin Name FunctionInput / Output MN1903 Installing the driver software Windows 95, 98 and ME Drivers\nmPCI\win9xInstalling the driver software Windows NT Installing the driver software WindowsInstalling WorkBench \startStarting WorkBench MN1903 Operation Operation MN1903 WorkBench Help fileConfiguring an axis Choosing an axis 1, 2, 3 and 4 axis cardsChoosing an axis 8 axis card Selecting a scale Setting the drive enable output Testing the drive enable output Servo axis testing and tuning Testing the drive command outputAn introduction to closed loop control Summary, the following rules can be used as a guide NextMove PCI servo loop Servo axis tuning for current control Selecting servo loop gainsMN1903 Operation Underdamped response Underdamped responseOverdamped response Overdamped responseCritically damped response Critically damped ideal responseServo axis eliminating steady-state errors Servo axis tuning for velocity control Calculating KvelffKvelff Correct value of Kvelff Adjusting Kprop Correct value of Kprop Stepper axis testing JOG.0=2Digital input/output configuration Digital input configurationDigital output configuration Saving setup information 10.1Loading saved information Operation MN1903 Problem diagnosis SupportMet featureNextMove PCI indicators Status and can LEDsSymptom Check CommunicationMotor control Output polarity Mechanical specifications Digital inputs X1 Relay output Encoder interfaces X12Stepper outputs X10 10CANopen interface11Baldor can interface NextMove PCI Expansion card NextMove PCI Expansion cardWith no One 4-axis One 8-axis Two 4-axis Axis numbering when using expansion cardsMain Expansion cards Expansion Expansion cardExpansion card status LEDs CBL021-501 NextMove PCI Breakout moduleCatalog number Description PCI003-501 CBL021-503Spares Digital output modulesNextMove PC system adapter Catalog Description Number OPT025-508Baldor can nodes Catalog Description Number OPT008-501 NextMove PCI can Bracket boardEncoder Splitter/Buffer board OPT029-501Accessories MN1903