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P P r r e e l l i i m m i i n n a a r r y y
Mercury
3000Si Dual Axis Averager
™
M M o o t t i i o o n n C C o o n n t t r r o o l l F F e e e e d d b b a a c c k k U U s s i i n n g g A A v v e e r r a a g g i i n n g g o o f f T T w w o o S S e e n n s s o o r r s s
I I n n s s t t a a l l l l a a t t i i o o n n M M a a n n u u a a l l
a a n n d d R R e e f f e e r r e e n n c c e e G G u u i i d d e e
Manual No. IM-M3000SiDAA Rev S5
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Summary of Contents for MicroE Systems Dual Axis Averager Mercury 3000Si
- Page 1 P P r r e e l l i i m m i i n n a a r r y y Mercury 3000Si Dual Axis Averager ™ M M o o t t i i o o n n C C o o n n t t r r o o l l F F e e e e d d b b a a c c k k U U s s i i n n g g A A v v e e r r a a g g i i n n g g o o f f T T w w o o S S e e n n s s o o r r s s I I n n s s t t a a l l l l a a t t i i o o n n M M a a n n u u a a l l a a n n d d R R e e f f e e r r e e n n c c e e G G u u i i d d e e Manual No.
- Page 2 I I n n t t r r o o d d u u c c t t i i o o n n MicroE Systems was founded to advance encoder technology to a level never before achieved. Our objective was to design encoder systems that would be small enough to fit into densely packed OEM equipment designs, affordable enough for cost-sensitive applications and easy enough to enable installation, setup and alignment by...
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Page 3: Table Of Contents
T T a a b b l l e e O O f f C C o o n n t t e e n n t t s s SYSTEM ILLUSTRATION Encoder with Linear scale Encoder with Rotary scale INSTALLATION INSTRUCTIONS Encoder System Mounting - Linear Encoder System Alignment - Linear... - Page 4 Mercury 3000Si Encoder System with Linear scale E E x x p p a a n n d d e e d d V V i i e e w w Mounting screws & flat washers (2 needed per screw) Sensor 1 Typical user-supplied sensor mounting brackets...
- Page 5 E E x x p p a a n n d d e e d d V V i i e e w w Sensor 1 Mounting hole (2) Top reflective rotary scale Rotary scale Power/Calibration - Sensor 1 Signal - Sensor 1 Mercury 3000Si Encoder System S S y y s s t t e e m m V V i i e e w w Shown with Rotary scale...
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Page 6: Installation Instructions
Installation Instructions Linear Encoders - Mounting Attach the scale to the base slide. Reference the preferred datum on the interface drawing for either end or center index orientation. Depending on the mounting method, attach the scale to the slide with adhesive. Refer to pg. 8 for details. - Page 7 If benching dimensions cannot be provided, proper sensor alignment may require minor adjustments to each sensor’s position with respect to the scale. This can be performed easily using the LED alignment indicators, as illustrated below. For sensor 1, the Sig 1 multicolor LED will turn from red to yellow-orange to green depending on sensor alignment.
- Page 8 Installation Instructions Rotary Encoders - Mounting Attach your hub/scale assembly to the rotary device. Refer to the interface drawing. The reflective surface of the scale must face the sensors. CAUTION: observe precautions for handling elec- trostatic sensitive devices. Route the sensor cables through your equipment to the Dual Axis SmartPrecision electronics module.
- Page 9 If benching dimensions cannot be provided, proper sensor alignment may require minor adjustments to each sensor’s position with respect to the scale. This can be performed easily using the LED alignment indicators, as illustrated below. For sensor 1, the Sig 1 multicolor LED will turn from red to yellow-orange to green depending on sensor alignment.
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Page 10: Reference Section Installation Of Linear Scales
Reference Section Installation of Linear Scales Positioning the Scale Note: Before beginning mounting procedure, use talc-free gloves or finger cots to handle the scales. "Benching" the scale to the system means aligning the scale by means of benching pins. Pin locations are described on the appropriate interface drawing. Two benching pins are recommended on the long side of the scale and one at the end as shown . -
Page 11: Recommendations For Power
Grounding Instructions for Mercury 3000Si Dual Axis Encoder Systems For Mercury 3000Si Dual Axis Averager encoder systems to operate reliably, it is essential that the sensor and cable shield are ground- ed properly according to the following instructions. The diagrams below show how to make the connections when the encoder's con- nector is plugged into the customer's controller chassis. -
Page 12: Customer Interface Cable Requirements
Customer Interface Cable Requirements Customer cables that interface to Mercury series encoders must have the following characteristics: • Twisted pair signal wiring. • Characteristic impedance of 100-120 ohms. • Sufficient wire gauge to meet the minimum voltage requirement at the encoder, for example 24AWG gauge wire for a 2m length cable. Examples of acceptable cables with 24 AWG gauge wire and 5 twisted pairs are Belden 9832, 8105 or other manufacturer’s equivalents. -
Page 13: Serial Output Specifications
Introduction Historically, the method of choice for many optical position feedback systems has been A quad B (Quadrature) output. The limitation of this method is output speed, especially when the interpolation level is high. When the optical sensor speed and/or the interpolation multiplier is set high, the Quadrature output frequencies will be extremely high and out of the range of the Quadrature counters of most standard motion controllers. -
Page 14: Serial Output Specifications
Serial Output Specification Index Processing A unique physical position is referenced on all gratings and is called an index position. The value of this position is determined during an index capture routine initiated by a button press or the SmartPrecision Software and is permanently stored for use after power cycling. -
Page 15: Smartprecision Software Installation
Optional SmartPrecision Software Installation Instructions Hardware Requirements: SmartPrecision Software for M3000SiDAA requires a PC with the following minimum specifications: · Windows 2000 or XP operating systems · 300MHz · 32Mb RAM · 1024 x 768 or higher screen resolution with High Color (16 bit color) ·... - Page 16 Configuration and Setup - SmartPrecision Software The M3000SiDAA interpolator module can be configured quickly and easily using the SmartPrecision Software. The M3000SiDAA inter- polator will accept input from two separate encoders. The M3000SiDAA has three output channels. These can be configured to output the following: Channel 1, Channel 2, Average ((Ch1+Ch2)/2), and/or Difference (Ch1-Ch2).
- Page 17 Configurations screen C C h h a a n n n n e e l l f f o o r r A A v v e e r r a a g g e e I I n n d d e e x x : : Selects the input channel index that will be used for the Averaged output.
- Page 18 M3000SiDAA Configuration C C h h a a n n n n e e l l 1 1 & & 2 2 C C a a l l i i b b r r a a t t i i o o n n S S e e t t t t i i n n g g s s If two separate axes are used the recommended setting is "Calibrate signal and center index".
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Page 19: Display Setting
Display Setting Dual Axis Software Display Settings The Status Display in the center of the screen gives the user a snapshot of the interpolator con- figuration as well as Index posi- tion indication. The indicator light on the SmartPrecision soft- ware mimics the LED on the M3000SiDAA. - Page 20 Calibration - SmartPrecision Software Confirm Calibration screen Calibration should be performed only after each of the encoders is aligned properly. Calibration can be initiated by either the Calibrate button using Smart Signal Software or through the recessed push button switch in the M3000SiDAA. To calibrate Channel 1: Through Software: Select "CALIBRATE SIGNAL on INPUT CHANNEL 1"...
- Page 21 Calibrate - SmartPrecision Software Encoder Signal Data Plot showing pre-porcessed and processed data. The Encoder Signal Graph will plot the encoder signal for Channel 1 or Channel 2. The M3000SiDAA has a USB interface which allows very fast data collection and plotting. The number of data points to be plotted on the graph at one time can be changed using the "Plot Settings"...
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Page 22: Operating And Electrical
System Specifications Operating and Electrical Specifications Maximum Power Supply: 5V+/-5% @ 550mA (including two sensors) Operating Temperature: 0 to 70 degrees C Storage Temperature: -30 to 80 degrees C Humidity: 10 to 90% RH non-condensing M3000SiDAA Output Connector Pinout (DB25 ) PIN Function Serial Data Output 1+ Serial Data Output 1-... -
Page 23: Operational Modes: Standard Communication
The interface to the M3000SiDAA Interpolator uses the following signals to implement serial communication, n_spiEnable (n_CS), spiDataOut (SDO), spiClockIn (SCK), and optionally spiClockOut (SCF). Each signal is differential and RS-422 compatible. See table for interpolator signal names, pin names, and pin locations Signal Name Pin Name n_spiEnable... - Page 24 Serial Output Specification Symbol Parameter tspiH spiClock High Time tspiL spiClock Low Time tCSC n_spiEnable to spiClock tCSD n_spiEnable to DataValid spiClock to Data Valid tCCS spiClock to n_spiEnable n_spiEnable High All timing are specified assuming no propagation delay from user's electronics and cabling. Page 22 Minimum Typical...
- Page 25 Operational Modes: Trigger Approach Timing Diagram The Trigger Approach can be used in applications where synchronization of the position data to an event is required. Often, this mode is used when a fixed latency between a clock signal and the sampled position data is required. The customer can choose this mode of operation by using the optional SmartPrecision Software.
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Page 26: Serial Data Format
Serial Output Specification 8bit status form at 0 Troubleshooting Problem The Power/Calibration indicator will not come on. Solution • Make sure that the SmartPrecision electronics’ 25-pin HD connector is fully seated and connected. • Confirm that +5 Volts DC is being applied to pin 24 on the SmartPrecision electronics’ 25-pin HD connector and that pin 25 is connected to ground. Problem None of the SmartPrecision electronics’... -
Page 27: Cleaning Scales
Contact MicroE Systems Thank you for purchasing a MicroE Systems product. You should expect the highest level of quality and support from MicroE. If you want to download the Mercury Encoder Installation Manual, Data Sheet or Interface Drawing, browse www.microesys.com and click on the Mercury Encoders button.
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