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Table of Contents
Summary of Contents for Newport XPS-DRVP1
- Page 1 XPS-DRVP1 Driver Board for XPS Controller and Piezoelectric Stages User’s Manual...
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Page 2: Warranty
Newport Corporation warrants this product to be free from defects in material and workmanship for a period of 1 year from the date of shipment. If found to be defective during the warranty period, the product will either be repaired or replaced at Newport’s discretion. -
Page 3: Table Of Contents
Open loop......................5 3.1.2 Close loop control ....................6 Specifications..................8 XPS-DRVP1 Functional description ..................8 XPS-DRVP1 Specifications ....................8 Starting up.................... 9 Installing the XPS-DRVP1 in the XPS controller ...............9 Stage connection ........................9 Powering up..........................10 5.3.1 XPS Controller ....................10 5.3.2 Axis initialization ....................10 5.3.3... - Page 4 XPS-DRVP1 Specific APIs..................18 10.0 Parameters description ..............18 10.1 « System.ini» File ........................18 10.2 « Stages.ini» File........................19 11.0 Maintenance ..................20 11.1 Axis initialization after error ....................20 11.2 Maintenance .........................21 11.3 Repair............................21 Service Form ....................23 EDH0259En1010 – 08/10...
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Page 5: Definitions And Symbols
This symbol designates an area where personal injury or damage to the equipment is possible. European Union CE Mark The presence of the CE Mark on Newport Corporation equipment means that it has been designed, tested and certified as complying with all applicable European Union (CE) regulations and recommendations. -
Page 6: Warning
Damage due to inappropriate handling is not covered by the warranty. Cautions CAUTION As Newport piezoelectric stages might include flexure mechanisms with limited load capacity, do not move the moving part of the stage manually. CAUTION Do not disconnect the stage cable when the XPS controller is powered... -
Page 7: Introduction
(Sub- D 25 Pins) XPS-DRVP1 Driver board. Newport « XPS-DRVP1 » driver board has been specially designed to provide POWERFUL and SIMPLE CONTROL, through XPS controller, of Newport stages motorized by piezoelectric actuators from the following series: NPA, NPM, NPO, NPX, NPXY, NPXY and PSM. -
Page 8: Overview Of Piezoelectric Technology
XPS-DRVP1 Overview of piezoelectric technology Actuator principle A piezoelectric actuator is made of crystals (PZT: Plumbium Zirconate Titanate) having three properties: It expands whenever a voltage is applied at the ends. The crystal expands linearly to the voltage applied, which can be up to ~100V:... -
Page 9: Position Sensors
XPS-DRVP1 Piezoelectric Stages Two types of stages use piezoelectric actuators: Centered Physical Load range o Direct: No mechanism is added, the crystal directly Axial Moving Part « pushes » the moving part Load (i.e. : actuator) Base o Amplified: the crystal pushes the mobile part decoupled from the base by flexures. -
Page 10: Piezoelectric Technology Pros And Cons
Newport solution advantages Newport piezoelectric actuators and stages controlled through the XPS controller and the XPS-DRVP1 driver board provide simple efficient solutions for a wide variety of applications from fast positioning with high resolution to fast signal tracking and to true high resolution/accuracy absolute positioning. -
Page 11: Open Loop
XPS-DRVP1 3.1.1 Open loop In the case of stages without sensors, an Stage Actual Position open loop control is used and the XPS- DRVP1 board generates a voltage to control the actuator proportional to the theoretical desired position. Operators can use the XPS control range set from 0 to Actuator range. -
Page 12: Close Loop Control
3.1.2 Close loop control For stages equipped with a strain gage sensor, the XPS controller and XPS-DRVP1 board allow true absolute positioning by generating the necessary voltage to the actuator to maintain the desired absolute position based on the sensor scale. - Page 13 XPS-DRVP1 3.1.2.2 Usable range limitation Stage Actual Position In case of axial load variation, the piezoelectric actuator will shrink (or expand). The stage resting position is shifted along the sensor scale (i.e. to Out of position -X). The actuator range is now range from “-X”...
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Page 14: Specifications
XPS-DRVP1 Specifications XPS-DRVP1 Compatibility and Functional description Newport « XPS-DRVP1 » driver board has been specially designed to drive the following Newport piezoelectric actuators and stages: Stage Series Without Position Sensor With Position Sensor NPA25, NPA25V6 NPA25SG, NPA25SGV6 NPA50, NPA50V6... -
Page 15: Starting Up
Use an approved anti-static mat to cover your work surface. To install XPS-DRVP1 driver board in XPS controller, proceed as follows: o Select an available slot and remove the corresponding plate (1 screw) o Remove the board from its package holding it by the rear plate... -
Page 16: Powering Up
When using the stage for the first time, initialize the axis without load on the stage. The XPS-DRVP1 driver board must be initialized to set all axis parameters (loop type, range and software limits). This can be done by clicking on « Initialize » button:... -
Page 17: Axial Load Verification
(saved in the stage’s EEPROM) allow the driver board to set the XPS controller scale Zero position at the stage origin. With no applied power, any Newport piezoelectric stage rests in an equilibrium or rest position based on actuator’s hysteresis. Although very close, this position is always slightly different from the stage origin (within 5% of the total travel range). - Page 18 If the resting position value of a non-energized piezoelectric stage and without any axial load is greater than ± 15% of its total range, the stage is probably damaged. Contact Newport for service. Note: If the axis is not disabled, the command will return an error (Error -118: Function is only allowed in DISABLE group state).
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Page 19: Offset Adjustment Procedure
XPS-DRVP1 Offset adjustment procedure To modify the offset parameter and therefore shift the command range, proceed as follows: Note: Axis must be initialized prior to proceed otherwise the command will return an error (Error -117: Positioner must be initialized). Logon to the XPS website as an “Administrator”... - Page 20 XPS-DRVP1 Then, in the parameters list, find the line starting with: « DriverStagePositionOffset » Replace the current parameter value by « Offset2 » rounded to the next higher 10 micron increment. Click on « Save ». The previous page is displayed again.
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Page 21: Accuracy Linear Correction Procedure
0.1%. The XPS controller and the XPS-DRVP1 driver board allow compensation for this linear error by modifying the “DriverTravelCorrection” parameter of the “Stages.ini” file. To modify this parameter, proceed as follows: Install an external position measuring device (I.E. - Page 22 XPS-DRVP1 Verify the current parameter value: - If it is different from 0 (default value), replace it by 0, and then click on « Modify » then « Reboot », and finally restart this procedure - Si it is already equal to 0, continue this procedure In the «...
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Page 23: Description/Use Of « Bnc » Output
This output can be used only if the driver board controls a piezoelectric stage equipped with a position sensor. The XPS-DRVP1 driver board features a « BNC » connector that provides an analog voltage image of the stage current position. -
Page 24: Specific Apis
XPS-DRVP1 Specific APIs In addition to the standard XPS commands, the following XPS-DRVP1 board specific APIs are available: - « PositionerDriverFiltersGet » : to get axis current close loop control parameters: KI (close loop integral coefficient), Notch filter frequency, Notch filter bandwidth, Notch filter gain and Low Pass filter frequency - «... -
Page 25: Stages.ini» File
; Limit sensors input plug ServitudesType=Piezo MaximumVelocity=4000 MaximumAcceleration=100000 Control loop parameters EmergencyDecelerationMultiplier=4 DO NOT MODIFY MinimumJerkTime=0.04 MaximumJerkTime=0.04 TrackingCutOffFrequency=25 ; Home search process HomeSearchSequenceType=CurrentPositionAsHome HomeSearchMaximumVelocity=4 General parameters. Not used by XPS-DRVP1 HomeSearchMaximumAcceleration=100 HomeSearchTimeOut=60 Figure 10 : XPS file: « Stages.ini » EDH0259En1010 – 08/10... -
Page 26: Maintenance
Maintenance 11.1 Axis initialization after error In case of malfunction, the XPS-DRVP1 driver board returns an error and the XPS controller will automatically “kill” the axis. XPS website allows checking the type of error(s). Select FRONT PANEL/Driver Status to display the current XPS-DRVP1 driver board status. -
Page 27: Maintenance
Then a final click on “Home” enables the axis. 11.2 Maintenance The XPS-DRVP1 board requires no particular maintenance. Nevertheless, this is an electronic board that must be kept and handled with precaution. WARNING Do not extract the board from the controller until you have read the following, and are at an approved anti-static work station. - Page 28 XPS-DRVP1 EDH0259En1010 – 08/10...
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Page 29: Service Form
XPS-DRVP1 Service Form Your Local Representative Tel.: ___________________ Fax: ___________________ Name: __________________________________________________ Return authorization #: _____________________________________ (Please obtain prior to return of item) Company: _______________________________________________ Address: ________________________________________________ Date: ___________________________________________________ Country: ________________________________________________ Phone Number: ___________________________________________ P.O. Number: ____________________________________________ Fax Number: _____________________________________________... - Page 30 Visit Newport Online at: www.newport.com North America & Asia Europe Newport Corporation MICRO-CONTROLE Spectra-Physics S.A.S 1791 Deere Ave. 1, rue Jules Guesde – Bât. B Irvine, CA 92606, USA ZI Bois de l’Épine – BP189 91006 Evry Cedex Sales France Tel.: (949) 253-1461...
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