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Model 6220H

Galvanometer Optical Scanner

INSTRUCTION MANUAL

CAMBRIDGE TECHNOLOGY, INC.

25 Hartwell Avenue

Lexington, MA 02421

U.S.A.

TEL.781-541-1600 FAX. 781-541-1601

www.cambridgetechnology.com

Revision 3.1, August 8, 2010

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Summary of Contents for 6220H

Page 1: ..._______________________________ Model 6220H Galvanometer Optical Scanner INSTRUCTION MANUAL CAMBRIDGE TECHNOLOGY INC 25 Hartwell Avenue Lexington MA 02421 U S A TEL 781 541 1600 FAX 781 541 1601 www cambridgetechnology com Revision 3 1 August 8 2010 ...

Page 2: ...t and Mirrors _____________________________________________ 10 3 4 Cabling______________________________________________________________ 11 3 4 1 Attaching the Cable to the Motor ____________________________________ 12 3 4 2 Modifying the Cable Length ________________________________________ 13 3 5 The 6220HM _________________________________________________________ 15 3 5 1 Field Replacement of t...

Page 3: ... mount have adequate heatsinking to allow scanner operation Never operate the scanner without a heatsink The scanner will suffer irreparable damage if allowed to overheat For more information refer to Section 3 2 The Cambridge Technology XY mount is a sufficient heatsink only if bolted to a customer supplied adequate heatsink to conduct away the heat It is recommended the customer use thermal grea...

Page 4: ...5 should be used to solder or unsolder any connections on the position detector board This scanner is now fully RoHS compliant Using leaded solder can result in failed solder joints due to incompatibility of the two types of solder and will make the entire assembly non RoHS compliant ...

Page 5: ...td 5 8 millimeters Rotor Inertia 0 125 10 gm cm2 Recommended Load 0 000 1 25 gm cm2 Torque Constant 6 17E 04 10 dyne cm amp Coil Resistance 2 79 10 ohms Coil Inductance 180 10 µhenries Back EMF Voltage 108 10 µv degrees s Thermal Resistance Rotor to Case 1 0 Max C watt Maximum Rotor Temperature 110 Max C Maximum RMS Current 3 9 Max amps Maximum Peak Current 20 Max amps Maximum RMS Power 60 Max wat...

Page 6: ...irements 30 20 mA DC 1 4 Nom volts Mounting Requirements A single axis scanner mount must dissipate 6 0 watt C for a mount temperature of 40 C An XY mount must dissipate 12 0 watts C for a mount temperature of 40 C See Section 3 2 for more information Notes 1 6220HM60 is reduced to 15 excursion and 18 initial contact 2 Setup for settling time Using CTI s recommended servo CTI s 5mm Y mirror moving...

Page 7: ...l of this sensor is a differential current signal that is fed back to the drive electronics closing the servo loop and allowing very fast and accurate mirror positioning A typical position demodulator circuit is included with this manual Cambridge Technology strongly recommends using this circuit to all customers that do not buy the CTI driver electronics The 6220H is now available in five differe...

Page 8: ...ient temperature is below 50 C the maximum case temperature the scanner should ever be allowed to attain Let s assume the ambient temperature is 40 C Then the heatsink must have a thermal resistance from the scanner body to ambient equal to RTH 50 40 C 120 watts 0 083 C watt Another representation is the thermal conductivity of the heatsink instead of its thermal resistance This is just the recipr...

Page 9: ...he long cylindrical section of the body See the Outline Drawing in Section 5 1 at the end of this manual The scanner must be mounted by this surface to adequately transfer the heat out A cylindrical compression style mount made of aluminum is preferred The mount should attempt to contact as much of the mounting surface as possible to minimize the thermal resistance The mount should then be bolted ...

Page 10: ...etails For custom mirror designs CTI offers a mirror mount numbered the 61522 1 For a nominal mounting fee CTI will precision mount customer supplied optics This ensures mass balancing for high acceleration applications A mirror is precisely positioned then epoxied into a slot in the mirror mount The mirror mount uses a compression style clamping scheme to grab the scanner shaft This is the only C...

Page 11: ...10HL 678 670 servos 9Pin D connectors 6010 21L XXX 6210HL 671 servo Amp and Molex connectors 6010 29L XXX 6210HL 677 673 servo Amp connector The XXX refers to the length of the cable in inches The Model 6210HB and 6210HBR have connectors that are compatible with the new higher power connectors used on the 6215HB and 6220HB They are not necessary for the maximum operation of the 6210H but they are ...

Page 12: ... 3 4 2 Modifying the Cable Length shown below Materials Required 1 Soldering iron with a small width tip 2 Solder 3 Wire cutters small Procedure 1 Before attaching the cable to the motor ensure that holes 1 2 and 7 through 11 have been properly de soldered There should be no solder left in these holes DO NOT de solder holes 3 through 6 These are for internal connections within the motor and must b...

Page 13: ...repair Materials Needed 1 Soldering iron with a small width tip 2 Solder 3 Wire cutters small 4 Wire strippers for wire 24 awg or 26 awg 5 Heat gun 6 Heat shrink tubing kit provided a 1 16 wide by 1 4 long b 3 16 wide by 1 2 long Procedure 1 Cut the cable to the desired length Ensure both cables are cut to the same length or uneven tension will be placed on the wires after soldering 2 Use one piec...

Page 14: ...of the conductors are 24 awg and on 6010 21L XXX and 6010 29L XXX all are 26 awg Tin the exposed ends of all conductors Do not use excessive solder or the wires may not pass through the holes in the scanner s position detector board Use only enough solder to hold the wires together but not so much that you cannot see the individual strands 8 Slide the 3 16 heat shrink tubing back down the cables s...

Page 15: ...t into account 3 5 1 Field Replacement of the Bumpers In the rare circumstance that a bumper must be replaced in the field please refer to D06250 the 6220H Bumper Field Service Instructions drawing in Section 5 1 and follow the procedure below 1 Turn off the power to the scanner and unplug its cable if possible 2 Turn the rotor so the mirror and stop pin are centered between the two bumper stops 3...

Page 16: ...tive while under warranty Obligations under this warranty are limited to repair or replacement of the equipment Cambridge Technology shall not be liable for any other damages of any kind including consequential damages personal injury or the like Opening the scanner assembly itself will void this warranty Damage to the system through misuse will void this warranty Cambridge Technology pursues a po...

Page 17: ...tline Drawing D05834 3 6220HL Outline Drawing D05981 4 6220HR Outline Drawing D06146 5 6220HB Outline Drawing D05943 6 6220HBR Outline Drawing D05983 7 6220H Preferred Mounting Block D04290 8 62XX 6010 8L Wiring Diagram D03762 9 62XX 6010 21L Wiring Diagram D04963 10 62XX 6010 29L Wiring Diagram D05897 11 62XXMRK Instruction Dwg D04733 12 62XXH Numbering Scheme D05950 13 6220H Bumper Field Service...

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