Baldor MN1851 manual Figure A-17 Inertia and Load Response Examples, Tracking factor

Page 74

Response Move to the “Response” block and place the cursor in the “bandwidth” window, and click on it.

The “bandwidth” is a measure of the range over which the system can respond. It is expressed in frequency or Hertz. This parameter controls the “rise time” of the system. It does not effect overshoot.

It is recommended that bandwidth is increased only if higher dynamic response is required. Increase the bandwidth and observe (go to plotting of move) the “velocity” and “command current”, until current reaches maximum value, then back off to 80%. The range is from 10–200.

The next step, would be to verify that the value you entered, provides for adequate system response. You can check this out, by having the software move the equipment and plot the response. Proceed to “Plotting of Move”.

Figure A-17 Inertia and Load Response Examples

Over–Estimated

 

1500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Velocity

1000

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Time

 

Velocity Command / Velocity

Tracking factor

Under–Estimated

 

1500

 

 

 

 

 

 

 

 

 

 

 

 

 

Velocity

1000

 

 

 

 

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–500

 

 

 

 

 

 

 

 

 

Time

 

 

 

 

 

Velocity Command / Velocity

Velocity

Good Response

1500

1000

500

0

–500

Time

Velocity Command / Velocity

The tracking factor parameter controls the amount of tracking versus overshoot. The range is 0 to 200. A “tracking factor” of “0” generates no overshoot. A “tracking factor” of 200 results in a PI equivalent control (i.e. with overshoot).

The next step, would be to verify that the values you entered, provides for adequate system response. You can check this out, by having the software move the equipment and plot the response. Proceed to “Plotting of Move”.

Click in the “Tracking” block and enter the desired adjustment value. This adjustment is used for applications that require improved tracking (or following) capability, to improve (or reduce) following error.

MN1851

Manual Tuning A-7

Image 74
Contents Lin+Drive Servo Control Table of Contents Ii Table of Contents MN1851 Minimum system requirementsAppendix B 24VDC Logic Power InputAppendix a Iv Table of Contents MN1851 CE Compliance Limited WarrantySection General Information Could result in damage to property Product Notice Intended useCould result in injury or death General Information MN1851Do not apply AC power before you ensure that grounds are Do not touch any circuit board, power device or electricalConnection before you first ensure that power has been Voltages that are conducted to its power input terminals.General Information MN1851 Section Product Overview Control Outputs Encoder OutputSection Receiving and Installation Mechanical InstallationGND Receiving & Installation MN1851Control Recommended System Grounding 1 phase for UL Recommended System Grounding 1 phase for CEInput Power Conditioning System Grounding Ungrounded Distribution SystemBreaker Wire Size for units without Power SupplyX1 Power Connections Mm2Baldor Control Components not provided with ControlBaldor Baldor Option S Option P Control Regen Resistor EarthBreaker Baldor Option P Control Important LPxAxxxx-xxx3 onlyTo use an M4 bolt 12mm in length Holes in the top and bottomEnclosure are for cable clamps. Be sure Longer bolts may short circuit11 Motor Connections for UL 12 Motor Connections for CE13 Optional M-Contactor Connections Single Ended Connection Differential Connection Control Input WiringX3 Control Inputs & Digital I/O Connections X3 Digital Inputs Opto Isolated Inputs uses CrefOpto Input Signal Conditions Signal Name Opto Input Signal DefinitionProcess Duration Time Required DurationX3 Digital Outputs Opto Output Signal ConditionsFault Relay MaO1Control TXD X6 RS232 / 485 ConnectionsNull Modem Cable Connections ComputerRS485 What is a termination resistor?Where are these resistors placed? How many resistors should my system have?TX+ RX+ Dgnd = Twisted PairTX+ Dgnd GND TX+ RX+ Dgnd GNDX7 Encoder Output Buffered Encoder Output at X7 ConnectorX7 Pin Signal Name ReservedX9 Encoder and Hall Feedback LPxAxxxx-Exxx Control Address Setting Section Switch Setting and Start-UpSwitch AS1 Settings Address Setting, AS1-1 to AS1-4 for Multi-Drop ApplicationsOffset Tuning Setting of switches AS1-5 to AS1-8Switch Function AS1-5 to AS1-8 DescriptionPower On Checks Start-Up ProcedurePower Off Checks ProcedureSwitch Setting & Start-Up MN1851 Section Operation Installing Software on your PCHost Communications Setup Windows Windows NTUsing The Setup Wizard Flowchart of the Setup Wizard Operation MN1851Page There are 7 parts to the setup procedure Motor Motor parameters. Click Download when finishedEncoder Feedback Encoder FeedbackEncoder Feedback Motor pitch mm 60.96 Lmcf All Micron Counts / meter Counts / mmOperating Mode Selection Screen Operating ModeCurrent Parameter MN1851 OperationSoftware Triggered MAI4 MAI3 MAI2 MAI1Index channel, Capture and Actual Position Procedure to define home positionHome Set this value. Click Download when finished DriftFile SetupMain Menu Choice Descriptions EditFunctions TuningWatch MotionPLC Program Menu HelpMeters/second Velocity Parameters RPM m/sLinear Motor MN1851 Troubleshooting Section Troubleshooting1Operating Mode Indications OverviewLong as the error is less than ± 215 ± Section Specifications & Product Data Identification+0 to 40. Above 40 C, derate the continuous and peak SpecificationsTo 3300 feet 1000 meters. Derate the continuous Output current by 2.5% per C above 40 C. MaximumPeak output current by 1.1% for each 330 feet Description UnitSpecifications & Product Data MN1851 24VDC Logic Power Input Option LPxAxxxx-xxx3 only24VDC Logic Power Input Option LP4Axxxx-xxx3 only Velocity ControlEncoder Input Feedback RegenerationClearance Requirements all sizes 0.06″ 15mm top and bottom DimensionsSize A, B and C CE Declaration of Conformity Wiring of Shielded Screened CablesSection CE Guidelines EMC Conformity and CE MarkingGrounding Earth EMC Wiring TechniqueCE Guidelines MN1851 EMC Installation Instructions Cable Screens GroundingEncoder Input Cable Grounding Input Signal Cable GroundingSimulated Encoder Output Cable Grounding To ControllerMating Connector by connector number for spare parts Section Accessories and OptionsConnectors CablesDepth = F AC Filter DimensionsAccessories & Options MN1851 Fo rRegeneration Resistor PackageAccessories & Options MN1851 General Tuning Rules Appendix a Manual TuningTools are available to make tuning easier, such as Manual TuningManual Tuning MN1851 There are 7 parts to the setup procedureParameters. Click Download when finished Motor15240 000,000 10,000,000 Figure A-13 Current Parameter Screen Figure A-14 Velocity Parameter Screen Drift Figure A-15 Drift Parameter ScreenFigure A-16 Select Manual Tuning Figure A-17 Inertia and Load Response Examples Tracking factorFigure A-18 PI Compensation Menu Page Graphic Screen Plotting of MoveControl Window Jog BlockSyntax General structure of the Ascii command Appendix B Command SetLin Ascii Command Set General MN1851 Command Set B-1Encoder Pulses/rev ResolutionParameters and Units Input Buffer Overflow command line exceeded 80 char Start-up with Terminal Communication and Command ExamplesExecution Error invalid command Control Design Failure invalid control designBasic System Parameters Motor Parameters MTR. prefixed General Settings System ConstantsCommand Set MN1851 Drive Parameters typical DRV. prefixedMN1851 Command Set B-5 Software Limit Switches ParametersVariables None Software Limit Switches Methods Command Description Units Range Default E2 / Par. setPLC.LINE PLC ParametersVariables None PLC Methods RelayDigital Interface Parameters MN1851 Command Set B-7OCI Interface Parameters Analog Interface ParametersSystem Variables General Variables Queries / modifications of Fault Listing VariablesX1 Possible Faults X1 Fault Display Description Methods Communication Settings ParameterMN1851 Command Set B-9 VariableData Record REC. prefixed Variable Queries of System Variables, Status, Faults Single ValuesData Record REC. prefixed Parameters Eeprom related Operation Mode Control Normal Modes ParametersMemory related methods Queries / modifications RAM related Normal Modes VariablesCurrent mode Methods Sys.mod Current mode ParametersCurrent mode Variables Query for actual current commandVelocity mode Methods Sys.mod 1 & Sys.mod Velocity mode ParametersVelocity mode Variables MN1851 Command Set B-13JOG.TYPE Jog ParametersJOG.TIME JOG.VELVariables MN1851 Command Set B-15Position Controller Position Controller Parameters HW.PLC HW.GRFXHW.GRSH HW.RESBaldor Electric Company  Baldor Electric Company MN1851 10/00 C&JLin+Drive Servo Control MN1851