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ELL18K Rotation Stage Evaluation Kit

 

Chapter 4: Operation

 

Page 6

 

DTN000524-D02 

Chapter 4  Operation 

4.1.  Getting Started 

 

Caution 

Although the module can tolerate up to 8kV of air discharge, it must be treated as ESD sensitive device. When 

handling the device, anti-static precautions must be taken and suitable anti-discharge appliances must be worn. 
Do not expose the stage to magnetic fields as this could affect the positioning and homing sensor operation. 
When power is applied, do not connect or disconnect the ribbon cable connecting the handset to the stage PCB. 

Always remove power before making connections. 

 

 

Warning 

If the device is operated over a prolonged time period, the motor housing may become hot. This does not affect 

motor operation but may cause discomfort if contacted by exposed skin. 

 

 

1.  Perform the mechanical installation as detailed in Section 3.2 

2.  Connect the handset to the stage if required. 

 

Caution 

The unit is easily damaged by connections with incorrect polarity. Pin 1 of the connector on the PCB is marked 

with an arrow (see Figure 4 and Figure 5.) which should be adjacent to the red wire in the connecting cable. 

 

3.  Connect the stage to a 5V supply and switch ‘ON’. (A 5V PSU is supplied with the ELL18K/M). 

4.  Connect the unit to your PC if required, and wait for the drivers to be installed. 

5.  Home the stage. Homing is necessary to align the sensor and establish a datum from which all future 

moves are measured. 

 

4.1.1.  Homing 

Homing is achieved using a combination of a reflecting optical sensor (IR) for coarse (0.5 to 1.0 mm) positioning, 

then a magnetic sensor for fine (1.0 µm resolution) positioning (the magnetic sensor is also used for positioning 

during subsequent moves). Using the ELLO software, the user can modify the offset value to shift the homing 

position (up to a ¼ of turn). Furthermore, coarse homing can be selected in a clockwise or counter clockwise 

direction (the switch between coarse to fine homing is always performed in the same direction to guarantee 

repeatability). 

 

4.1.2.  Position Error Compensation 

The stage has a positioning error compensation algorithm. When moving from one position to another, the stage 

detects the error between the requested and actual positions and will calculate an error compensation value, 

which is then applied to the next movement. The calculation is applied automatically and is continually updated, 

but generally the optimum value is calculated within 2 to 6 motions. 

 

Содержание ELL18

Страница 1: ...ELL18 and ELL18K Rotation Stage Kit Operating Manual Original Instructions...

Страница 2: ...Connecting Multiple Devices 10 4 2 5 Controlling the Stage without the handset 10 4 3 Frequency Search 12 4 4 Periodic Cycling of Devices Over Full Range of Travel 12 4 5 Restoring Factory Settings 1...

Страница 3: ...s a travel range of 360 continuous rotation however the displayed position and requested position commands are in the range 0 to 359 99 Homing is achieved using a combination of a reflecting optical s...

Страница 4: ...t may be impaired In particular excessive moisture may impair operation The equipment is susceptible to damage from electrostatic discharge When handling the device anti static precautions must be tak...

Страница 5: ...be exposed to corrosive agents or excessive moisture heat or dust Do not expose the stage to magnetic fields as this could affect the positioning and homing sensor operation If the unit has been stor...

Страница 6: ...iances must be worn Do not expose the stage to magnetic fields as this could affect the positioning and homing sensor operation An external magnetic field close to the sensor should be below 5mT When...

Страница 7: ...diffracted light being incident on the slit located to the right Figure 2 ELL18 with components fitted Figure 3 Fixing the ELL18K to the work surface 1 Using the M3 x 6 mm 6 32 x bolts supplied fix t...

Страница 8: ...in the connecting cable 3 Connect the stage to a 5V supply and switch ON A 5V PSU is supplied with the ELL18K M 4 Connect the unit to your PC if required and wait for the drivers to be installed 5 Hom...

Страница 9: ...Homing and Jogging functionality can also be accessed by applying voltages to the digital lines on Connector J1 The modes of control are described in the following sections Caution In all modes the a...

Страница 10: ...external 5V power supply The external PSU connector allows the stage to be used in the absence of a PC with control being achieved via the handset buttons LED1 green is lit when power is applied to t...

Страница 11: ...oller to the stage unit 3 Connect the hand held controller to the 5V Power Supply and switch on 4 Connect the hand held controller to the PC USB port and wait for the drivers to be installed 5 Run the...

Страница 12: ...ns are contained in the help file supplied with the software Connect the first device to the PC USB port then run the Elliptec software and load the device Change the address of the first device Conne...

Страница 13: ...3 IN RX receive 3 3V TTL RS232 4 OUT In Motion open drain active low max 5mA 5 IN JOG Mode active low max 5V 6 IN BW Backward active low max 5V 7 IN FW Forward active low max 5V 8 PWR VCC 5V 10 800mA...

Страница 14: ...build up of debris on the track and will prevent the motors digging a groove over the most used area of contact Typically a travel cycle should be performed every 10K operations 4 5 Restoring Factory...

Страница 15: ...nce Using the software to perform a frequency search will compensate frequency as needed required current could reach 1 2A during frequency search use an addition 5V 1A power supply and a USB connecti...

Страница 16: ...ifetime will depend on several factors e g load number of homing operations number of frequency searches etc and users must take into account all these factors when considering life time For example h...

Страница 17: ...terface board When making a cable to operate multiple devices it is important to observe the correct pin orientation The following procedure offers guidance in making such a cable 1 Gather together th...

Страница 18: ...ake connection with the ribbon cable 4 If other connectors are required they should be fitted at this point Slide each connector onto the cable paying attention to the orientation as shown below then...

Страница 19: ...tion During Movement 800 mA Standby Current 0 05 A Motor Type Elliptec Resonant Piezo 8 Conductor Ribbon Cable Length Supplied 250 mm 8 Conductor Ribbon Cable Length Maximum 3 m Operating Temperature...

Страница 20: ...ELL18K Rotation Stage Evaluation Kit Chapter 7 Regulatory Page 18 DTN000524 D02 Chapter 7 Regulatory 7 1 Declarations of Conformity 7 1 1 For Customers in Europe...

Страница 21: ...equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may caus...

Страница 22: ...171 S o Carlos SP 13560 110 Brazil Tel 55 16 3413 7062 Fax 55 16 3413 7064 www thorlabs com Email brasil thorlabs com Japan Thorlabs Japan Inc 3 6 3 Kitamachi Nerima ku Tokyo 179 0081 Japan Tel 81 3 6...

Страница 23: ...www thorlabs com...

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