Mercury II Installation Manual revS16.qxd
Contents
1. WH MTE Series Encoders L Sensor Installation Manual and Reference Guide MicroE Systems e 125 Middlesex Turnpike Bedford MA 01730 USA MTE IM Series Rev C 2014 MicroE Systems www microesys com info microesys com T 781 266 5700 Table of Contents MTE Sensor Installation Introduction Introduction Precautions Patents Manual Revisions cccccccceececeeeeceeeeceeeeceeeesaeeeeaneeeaeees 3 Recommendations for Power Installation Consideration 4 Items Required for Sensor Installation cccccccccccecceceeeeseeeeceeeeceeceseeeeeseeeeseeeeseueeseueesaueeseneesens 9 MTE Top Mount Configuration System Overview Diagram WE 6 Sensor Head Installation 7 SPENSO PIS e E tele Tu MR Emo EM 8 MTE Side Mount Configuration System Overview DISOFAITIq es cacicunzouitba neos eege sous dn caua vestre zaliiun anh ino es vo SE 9 Sensor Head Installation 10 CNIS Ole PEAT NGA NET oom 12 Appendix Bis SSC CAN OWS RN TT Tm 13 B Wiring Diagrams uscucs oacescinetiesacnmedinncerseka nicecsdiaadeced dud dunesstededaeiag cba Las ax u ducbidvedoshiatesadhangedoctds 14 C Interface Cable Requirements xesssecsevnsxendxrdvueseiss tec osa evi dus Eben hu Crav Ea dba Eva qub 15 16 D Ro422 0 41 6 Ee 17 Es TOUDIESNOGIO MEE Emm 18 ZG uco e 19 Contacting MicroE Systems Sac T 20 Page 2 Manual Version Numbers MT2. conditions Digital Output Signals Operating and Electrical Specifications Power Supply 5VDC 5 135mA max when used with recommended termination 80mA max unterminated Temperature Operating 0 to 70 C Storage 20 to 85 C Humidity 10 to 9096 RH non condensing Agency Standards Conformance In accordance with Electromagnetic Compatibility Directive 2004 108 EC EN 55011 2007 EN 61000 4 2 3 4 6 Shock 300G 0 5 ms half sine Vibration 30G at 17Hz Sensor Cable Double Shield Diameter 3 6mm 0 142 Flex Life 20x10 cycles 20mm bending radius Standard 9 pin D sub connector Outputs Digital A quad B Index Window A B and IW outputs are differential Alarm is single ended open drain Signal Level A B I differential RS 422 compatible A B I single ended High gt 4 2VDC Low lt 0 2VDC Alarm 0 2VDC Vcc Quadrature Index Alarm 20um Typical Duration of alarm event gt lt gt lt Pins 8 amp 4 Pi eae 4 5VDC M Vcc Pins 6 amp 2 Pin 1 Inverse signals are not shown for clarity Open drain requires external pull up Page 13 Appendix B Wiring Diagrams Connector Pin Configuration PIN 1 MTE 9P D Sub Pinouts Pint Function Index Window 3 B oa a 6 IndexWindow WE WC WER SSES NOTE GND and INNER SHIELD ARE INTERNALLY CONNECTED Recommended Signal Termination Digital Outputs A B MTE Series Encoder Cable Zo 1200
3. and must provide complete shielding over the conductors contained within it over its entire length Furthermore the shields should be grounded at the connection to the controller chassis the same way as the encoder connectors in the diagrams below NOTE For best performance isolate the encoder outer shield from motor cable shields and separate the encoder cable as far possible from motor cables 4 1 Sensor mounted with good electrical contact to a well grounded surface preferred 9 pin D sub connector grounding The encoder s connector shell must be in contact with the customer supplied mating connector which must be isolated from the controller s ground If a customer supplied shielded cable connects the encoder to the controller then the outer shield on the customer supplied cable must be isolated from the controller s ground The sensor mounting surface must have a low impedance DC AC connection to ground The encoder sensor mounting surface may have to be masked during painting or anodizing to insure good electrical contact with the Sensor INNER SHIELD Insulated from outer shield sensor case and connector housing Connected to circuit common internally as supplied by MicroE Systems POWER SUPPLY 5 Volts O Volts sensor and connector housings NU SHIELD Connected to Electrically conductive mechanical connection as supplied by MicroE Systems 4 2 Sensor mounted to a surface t
4. tape scale and the bottom of the plastic gauge tool 2 Install Sensor Install the sensor on the mounting surface referencing the appropriate datum surface as shown on the Interface Drawing Use two M2 or 2 56 screws to loosely affix the sensor A benching edge is recommended to locate the sensor to meet the mechanical mounting tolerances Refer to the Interface Drawing for recommended location and height of edge MTE Sensor Alignment Tolerances Alignment Tolerance Direction of Motion x O 15mm x O 15mm a quo 2 0 2 0 Note Tolerance for each axis is specified independently assuming nominal alignment in all other axes Gauge P N ZG CET Page 7 Sensor Head Alignment Top Mount Configuration MTE Series Encoders l Proper sensor alignment may require minor adjustments to the sensor position with respect to the scale This can be performed easily using the Sensor e LED indicator The red yellow or green Signal LEDs will light depending on sensor alignment Slowly move the sensor by allowing it to slide on the mounting surface until the green Signal LED is illuminated Optimal alignment will be displayed as a bright green Signal LED Confirm that the green Signal LED blinks when passing over the index If not readjust the sensor in the Y direction and repeat the above procedure When alignment is completed tighten the sensor mounting screws 0 37Nm 3 3 inch lbs m
5. the MTE Series electronics Signal LED better than red or yellow or the green Proper Alignment indicator doesn t stay illuminated over the full length of the scale Solution e Verify that the sensor is mounted in the correct orientation with reference to the scale and scale mounting reference edge Refer to the Interface Drawing e Verify that the sensor has been aligned to the scale and that the mounting screws are tight Check the dimensions for the mechanical mounting holes and clamps if any to make sure that the sensor is correctly located over the scale in the Y and Z dimensions Refer to the Interface Drawing e Check that the scale is firmly mounted and can t jiggle or move in any direction e Make sure that the scale is clean over its entire length or circumference Page 18 Appendix F Order Guide How to Order Sensor MTE 20 2 Cable Length 1 2 1 0m 2 2 0m 5 5 0m Interpolation Resolution 4 x4 bum 8 x8 2 5um 20 x20 1um Custom cable lengths and connectors are available Contact MicroE Applications Engineering Sensor Installation Tools ZG CET Z Height Gauge Compact Encoder Tape top mount configuration MTE Side Mount Bracket Kit BK SM MTE Side Mount Bracket Kit Reference design is available upon request FlexFit Adaptor MK FFA FlexFit Adaptor Mounting Kit Reference design is available upon request Scales Compact Encoder Tape CET TM CET20 N A I xxx
6. Customer A B Electronics Standard RS 422 Line Receiver Circuitry Max cable length 5m Contact MicroE Applications Engineering if longer length required Grounding Considerations Alarm Alarm output is an open drain N channel MOSFET Drain cir cuit is normally closed current flows and opens when the encoder signal is too low Alarm requires the use of an external pull up resistor See customer supplied circuit example on right Sensor mounted with good electrical contact to well grounded surface preferred ININER SHIELD Insulated from outer shield sensor case and connector housing Connected to circuit common internally as supplied by MicroE Systems M Electrically conductive mechanical OUTER SHIELD Connected to sensor and connector housing connection as supplied by MicroE Systems Sensor mounted to poorly grounded or non conducting surface Page 14 d 0 Volts Veco Vee R gt oe 0 3 amps POWER SUPPLY 5 Volts 5 Volts O Volts Vcc s 30 volts Alarm circuit Appendix C Interface Cable Requirements 1 Customer Interface Cable Requirements Customer cables that interface to MTE series encoders must have the following characteristics Twisted pair signal wiring e Characteristic impedance of 100 120 ohms e Sufficient wire gauge to meet the minimum voltage requirement at the encoder for example 24AWG gauge wire for a 2m length cable Exampl
7. E IM Sensor Installation Rev C issued May 2014 Changes Page 5 changed Items Required to Items Recommended For Model ZG CET changed ships with each sensor to sold separately MTE IM Sensor Installation Rev B issued February 2014 Changes Added Side Mount Configuration MTE IM Sensor Installation Rev A issued November 2013 Changes N A Related Documents MTE Data Sheet MTE Interface Drawing Compact Encoder Tape CET Scale Installation for MTE Series Encoders Precautions 1 Follow standard ESD precautions Turn power off before connecting the sensor Do not touch the electrical pins without static protection such as a grounded wrist strap 2 Do not touch the tape glass scale unless you are wearing talc free gloves or finger cots Please read this installation manual for full instructions LASER SAFETY INFORMATION MTE Series This product is sold solely for use as a component or replacement in an electronic product therefore it is not required to and does not comply with 21 CFR 1040 10 and 1040 11 which pertain to complete laser products The manufacturer of the complete system level electronic product is responsible for complying with 21 CFR 1040 10 and 1040 11 and for providing the user with all necessary safety warnings and information MicroE encoders contain an infrared laser diode or diodes Emitted invisible laser radiation levels have been measured to be within the CDRH Class 1 range which is not considered ha
8. acket Kit Model Number BK SM MTE Z height spacer shim ships with each bracket kit 1 00mm red for use with CET scales Optional MK FFA bracket kit for installation into industry standard mounting hole patterns Page 5 System Overview Top Mount Configuration MTE Series Encoders MTE Series System View Sensor shown attached on a linear slide base with mounting bracket Compact Encoder Tape scale shown mounted on a stationary surface Expanded View Sensor mounting screws 2 and flat washers 2 Typical user supplied sensor mounting bracket Page 6 Sensor Head Installation Top Mount Configuration MTE Series Encoders l Verify Sensor Mounting Surface Height Verify that the distance between the mounting surface of the sensor and the top of the scale is as follows Tape scale after blue protective film is removed 3 84 mm x 0 15 mm MicroE s Z axis height gauge can be used to easily verify this distance P N ZG CET Use the gauge to check that there are no gaps between 1 The mounting surface of the gauge and the mounting bracket or 2 The bottom surface of the gauge and the scale Place the gauge in position and use the mounting screws as guides If the bottom of the gauge hits the tape you will see the gap between the gauge bottom mounting surface and your mounting bracket surface If you hand tighten the sensor mounting screws there should be no gap between the
9. aximum torque Green Yellow Red Optimal Marginal Improper Performance Performance Performance 2 Confirm that the Signal LED remains green over the full range of motion by sliding the scale past the sensor The green Signal LED must remain on over the entire range If not aligned over the entire range of motion loosen the sensor mounting screws and repeat steps 1 and 2 The LED will and should blink when passing the index mark Page 8 System Overview Side Mount Configuration MTE Series Encoders MTE Series System View Typical user supplied sensor mounting fixture Compact Encoder Tape scale MTE Sensor shown mounted on a stationary surface Index track D tape scale datum edge see MTE Interface Drawing Expanded View e Bes B Sensor mounting screws C 2 and flat washers 2 Typical user supplied sensor mounting fixture MTE Side Mount Bracket Kit Model Number BK SM MTE Page 9 Sensor Head Installation Side Mount Configuration MTE Series Encoders Sensor Mounting Orientation and Tolerances Axis diagram Side mount bracket not shown MTE Sensor Alignment Tolerances Alignment Tolerance Direction of Motion x O 15mm x O 1l5mm O EAO 2 1 Install the Sensor Use a wrench and M2 M3 screws to install the sensor and Side Mount Bracket Kit Refer to the interface drawing to make sure sensor is oriented proper
10. es of acceptable cables with 24AWG gauge wire and 4 twisted pairs are Belden 9831 8104 and 9844 or other manufacturer s equivalents e Single shield cable with a minimum of 90 coverage Note that a double shielded cable may be required in high noise applications 2 Signal Wiring Each differential signal should be connected to a corresponding twisted pair as follows Index Index 45V GND 3 Shield Termination The customer s cable shield should be in 360 contact with the connector shroud and the connector shell to provide complete shielding The connector shell should be metal with conductive surfaces Suggested metal connector shells for use with MTE encoders AMP 748676 1 or equivalent The shield should be terminated as illustrated in the following diagram Jacket ye 7 sD l TATATA AT AET AET AET ET AT T T AT ATAT Aluminum F ZIZLI LELEL TALL Polyester Shied Braided ARR RR ERARA AAA AAA LL Lie A A Shield CC A fe 4 LAA AAA Z LI Fold braided shield back over jacket Example shows double shielded cable Dimensions shown are for illustration only Page 15 Appendix C Interface Cable Requirements 4 Grounding The diagrams below show how to make the connections when the encoder s connector is plugged into the customer s controller chassis If a customer supplied extension cable is used it should be a double shielded cable with conductive connector shells
11. hat is grounded through bearings or a poorly grounded surface or mounted to a non conducting surface 9 pin D sub connector grounding The encoder s connector shell must be in contact with the customer supplied mating connector which must be connected to the controller s ground If a customer supplied shielded cable connects the encoder to the controller then the outer shield on the customer supplied cable must be connected to the controller s ground The controller must be grounded to earth at the point of installation The encoder sensor must be mounted so that it is electrically isolated from ground Page 16 Appendix D RS 422 Compliance The MTE is RS 422 compatible Encoder signals are sending end terminated Therefore customer receiving terminations are not required If you elect to use them the supply current will increase Optional RS 422 compliant circuitry for long cable runs in harsh electrical environments is illustrated below 5V B C6 TuF L1 INDUCTOR 5V B A C7 1uF 47 A A 47 A B 4 B B 4 B IW 4 IW A IW DS26C31TM IW DS26C32A TM Page 17 Appendix E Troubleshooting Problem The Sensor LED indicator won t turn on Solution e Make sure that the MTE Series electronics 9 pin D sub connector is fully seated and connected e Confirm that 5 Volts DC is being applied to the MTE Sensor Refer to the MTE interface drawing for proper pinouts Problem Can t get
12. low or green Signal LEDs will light depending on sensor alignment Optimal alignment will be displayed as a bright green Signal LED Loosen the sensor mounting screws washers to reposition the sensor in the Y axis if needed Confirm that the green Signal LED blinks when passing over the index If not readjust the sensor in the Y direction and repeat the above procedure When alignment is completed tighten the sensor mounting screws 0 37Nm 3 3 inch Ibs maximum torque Green Yellow Red Optimal Marginal Improper Performance Performance Performance 2 Confirm that the Signal LED remains green over the full range of motion by sliding the scale past the sensor The green Signal LED must remain on over the entire range If not aligned over the entire range of motion loosen the sensor mounting screws and repeat step 1 The LED should blink when passing the index mark Page 12 Appendix A Specifications System MTE sensors are compatible with PurePrecision M Compact Encoder Tape CET M Scale Scale Pitch 20um System Resolution 5um 2 5um or 1um specify at time of ordering Linearity Compact Encoder Tape Scale Linearity lt 10um m After two point correction in the customer s controller Sensor Size amp Weight Height Width Length 0 33 8 4mm 0 50 12 7mm 0 81 20 6mm Weight 5g without cable Reliability Information 5 Year Expected Reliability gt 99 8 under normal operating
13. ly with reference to the scale j 1 1 Install the Side Mount Customer mounting 1 2 Install the sensor Into the Customer mounting Bracket Kit on to the customer fixture Side Mount Bracket Kit fixture mounting fixture Side Mount Bracket Kit l l Model Number BK SM MTE Side Mount Bracket Kit Page 10 Sensor Head Installation Side Mount Configuration MTE Series Encoders 2 Verify Sensor Mounting Surface Height Refer to the MTE interface drawing for detailed dimensions Use the Z Height red spacer shim 1 00mm to set the proper Z height distance between the bottom surface of the Side Mount Bracket Kit MTE Sensor and the top of the scale Mounting fixture loose in the Y axis 2 1 Loosen the Mounting Fixture in the Y axis Z Height red spacer Gently push the mounting fixture Bracket Kit and sensor against the top of the tape scale in the Z axis 2 3 Press down gently in the Z axis and tighten the mounting fixture screws Mounting fixture screws Page 11 2 2 Place shim between the bottom of the Bracket Kit Adaptor and the top of the scale 2 4 Carefully remove the shim by rotating it off the scale with the shim s handle Sensor Head Alignment Side Mount Configuration MTE Series Encoders l Proper sensor alignment may require minor adjustments to the sensor position with respect to the scale This can be performed easily using the sensor s LED indicator The red yel
14. to function in a wide range of applications and environments To take full advantage of the modular system design considerations should be made to allow easy access to the sensor for service and or replacement For optimal performance and reliability DO follow standard ESD precautions while handling the sensor and interpolator DO allow proper alignment clearance for sensor head alignment DO follow setup instructions for the encoder system DO where possible install the scales in an upside down or vertical position to minimize accumulation of dust DO consider redundant encoders or additional feedback devices as part of an overall risk management program for medical applications DO NOT store sensors in an uncontrolled environment DO NOT electrically overstress the sensor Power supply ripple noise DO NOT intentionally hot swap the sensor if the device is energized DO NOT use in high contamination applications dust oil excessive humidity or other airborne contaminants Page 4 System Overview MTE Series Encoders Refer to encoder model data sheets for detailed ordering guide and more information about MicroE Part Numbers Items Recommended for MTE Encoder Installation Using Compact Encoder Tape CET Scales Hex wrench M2 5 for Top Mount 5 64 M3 5 and M2 5 for Side Mount For MTE Top Mount configuration Z height spacer Model Number ZG CET sold separately For MTE Side Mount Side Mount Br
15. uipment and instrumentation in many industries including medical industrial robotics automation metrology semiconductor manufacturing packaging equipment entertainment energy military and scientific research MicroE Systems MicroE Systems 125 Middlesex Turnpike Bedford MA 01730 USA T 781 266 5700 F 781 266 5112 info microesys com www microesystems com 2014 MicroE Systems Page 20
16. x C I Individual Lengths C Continuous reel with index and cut marks unless otherwise specified Length in mm 10mm 30 000mm For length gt 5000mm contact MicroE for custom P N Index I Center Index C Custom Index Example 1 CET20 N A I 4550 C 4550mm long single center index 2775mm from cut marks continuous Example 2 CET20 N A C 5xxx I Multiple indexes individually cut with index dimensions per factory issued part 5xxx e g index at 50mm and 350mm segment length 400mm Example 3 CET20 N A C 5xxx C Single index which is offset from center of segment continuous with index dimensions per factory issued part 5xxx e g index at 50mm from left cut mark segment length 400mm CET Tape Scale Applicator Tools use for lengths gt 1m TSAT CET Tape Applicator Tool for MTE top mount configuration TSAT SM PPT Tape Applicator Tool for MTE side mount configuration End Cap Kit PurePrecision Tape Scales EC Optional Tape Scale End Caps Page 19 Contacting MicroE MicroE Systems is a world leader in optical encoder technology with offices in major industrial centers around the globe To learn more about MicroE Systems products visit www microesystems com Our products have been used by thousands of companies worldwide to solve a wide range of motion control applications Our advanced encoder technology and application expertise has driven innovations in the design of machinery eq
17. zardous however to minimize exposure to the diverging beam the encoder sensor should be installed in its operational configuration in close proximity to the encoder scale before power is applied e Invisible laser radiation wavelength 850 nm e Max power 2 4 mW CW e CAUTION The use of optical instruments with this product will increase eye hazard DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS MICROSCOPES EYE LOUPES OR MAGNIFIERS e All maintenance procedures such as cleaning must be performed with the MicroE encoder turned off e Do not insert any reflective surface into the beam path when the encoder is powered e Do not attempt to service the MicroE encoder Patents Covered by the following patents US 5 991 249 EP 895 239 JP 3 025 237 US 6 897 435 and EP 1 451 933 Additional patents and patents pending may apply RoHS MTE models are CE and RoHS compliant CE Page 3 Recommendations for Power Installation Considerations MTE Series Encoders I Recommendations for Power MTE encoders require a minimum of 4 75VDC continuously When designing circuits and extension cables be sure to account for voltage loss over distance and tolerances from the nominal supply voltage so that at least 4 75VDC is available to the MTE encoder under all operating conditions The input voltage should not exceed 5 25VDC 2 Installation Considerations The MTE encoder is a precision electronic instrument It has been designed
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