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1.                                                                                                                                                                         M2 MECHANICS                                                                                                                               THERMOSTAT T           Dimensions 578X555X800mm   Power dissipation    500  v  ER    Bend      w   Catastrophic Limit Circuit e e e o    Limit Switches  4 Limit SW  Limit SW   Y      ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS           4  SURGE E 9 4  amc ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS       FOCUS  Inrush Supressor ZA 4                       4 P ENCODER 2  M    3 ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS Velocity POWER DRIVE    8       Controller            RFI POWER 3 E  58 LINE FILTER    INCREMENTAL ENCODER SIGNALS HARMONIC     Regeneration Resistor   DRIVE  y SCHUKO RECEPTACLES 47Ohms 50W    M2 LCU SS        gt    Limit Switches   Limit SW  Limit SW   Ethernet  lt  4 Conditionin                   VxWorks Console       A       bai X X  uo m  0 SERVO            POWER DRIVE   ENCODER    RS 232  gt  Velocity  1   C   O 7 x  Song A RS 232      e     Controller  ervo Amps   RS29 4   INCREMENTAL ENCODER SIGNALS HARMONIC  ti   4  e DRIVE    4 Catastrophic Limit Circuit e o e     Limit Switches 4 Limit SW  Limit SW     Conditioning  4  Ce ESO Standard Cooling Unit                 y  N A POWER DRIVE   ENCODER    Velocity  Controller m        T    INCREMENTAL ENCODER SIGNA
2.                                                                      7  2 1  MOTION CONTROL CONCERT  7  2 2    MOTION CONTROL COMPONENTS  2555250 eto                                   7  2 3                                             8  20 2                                                                               8  2 4  FOCUS  X AND Y POSITION AND VELOCITY CONTROL                                    00  00000 00  9  3  M2DRIVES ELECTROMECHANICAL COMPONENTS                  ee eere eese eee eee to 00 10  3 1    FOCUS  X AND Y DRIVE COMPONENTS enne tenente eneetr nnns aee eterne nane                  10  3 2  FOCUS LINEAR ENCODER      seen eite        s es ettet nnns          11  4  ELECTRONICS CABINET     eeieieccecesvoseos es sosta cao vus rose eV eral               usw oat ee        eeir o                 11  Et                                                       E 11  42       SERVO AMPLIPIERS tec ete irre e REN restet    EEN                   11  4 3  VME4SA COMPONENT ADAPTER CONFIOGURATION                                          11  AA  CABINET COOLING UNIT 5  ere          IA dte eet obo    UTERE 12  4 5    MAINS POWER DISTRIBUTION                                     evecta ee                                  12  5  672 14 D IT EE 13  5 15     FOCUS X AN Y DRIVE UNITS EE 13  52   CABINE                                                        TNL        IB nH e 13  5 2 1  Cable Feed trough        i a PA Fes rea be 13        CINSIDEPHE                     13  E TNR 
3.                                                      gaere M2        UNIT MINI RACK M2 MECHANICS  EXTERNAL            Dimensions 578X555X800mm   Power dissipation  500W  Catastrochic Limit Circuit  BREAKER V               oF os  E it Swit Limit SW  Limit SW   e ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS pore H     m  SURGE 4       4                 ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS H  FOCUS           rosso    SERVO AMP    ENCODER  H ENCODER  ANALOGUE DRIVE and LIMIT SIGNALS Velocity            DRIVE  i       Controller  Rs INCREMENTAL ENCODER SIGNALS  LINE FILTER  Regeneration Resistor                   5           RECEPTACLES ATOhms 50W  M2 LCU        Limit Switches  Limit Sw  Limit SW   Ethernet 5  lt     Conditioning  4  RS 232        VxWorks Console     E    d   H X         lei o SERVO           POWER DRIVE ENCODER                   gt  Velocity  See AI RS 232  0   Controller  one Ne c INCREMENTAL ENCODER SIGNALS      2  2       Regeneration Resistor HARMONIC  os SOW  DRIVE  4 Catastrophic Limit Circuit s  os   Limit Switches     Limit SW  Limit SW       fe   Conditioning  4  9004 ESO Standard Cooling Unit ENS  Y          e POWER DRIVE ENCODER  Velocity  Controller      1 f INCREMENTAL ENCODER SIGNALS DNNE                         Resistor DR  VE  INTERNAL TEMP  SENSOR Ze   Date  Init   European Southern Observatoi  EXTERNAL TEMP  SENSOR Drawn   010608        P Gen   y              p    er Control Electronics  Title  Page     Block Diagram     11  1  FDR  60503 JA  
4.                                     1O MAINS distribution  FUSE   230VAC C gf  J2     GROUND  PE   rOCHASSIS  VME PS     wae E         12V VME   12V VME                        d                          712  lt    NET Connection  a        4 J2  lt   D MES FLAT CABLE  N  E  d Ji Empty Slot 22     15V  5           2       FOCUS  8                   2 E  lt   L A  a       lt  M2  X   gt      9       A  lt    2           VME4SA type   SPARE         J2   72           LI         Empty Slot Je       CONT  L                                                                                                                           BH European Southern Observatory  3 6 V2  Cheka          pem   Control Electronics  Title  M2 LCU Page  Internal Wiring Diagram  Part 1  1 1  1 FDR mmm   JA   Document Number  File Name   Issue   Revisions Date   Init 3P6 DSD ESO 60400 0001 M2 LCU 01 skd                M2 LCU                               CON T      oO      QJ  Empty Slot   2   2              a    nx  SIS  Q J1        Empty Slot J2  d  5            QJ  Empty Slot            O9    LI         Empty Slot j    n          Ee Empty Slot                                                                               230VAC  15V 500mA KNIEL PS   15V  15V 500mA KNIEL PS   15V  Date   Init             ann            European      Observatory  Choka                     Control Electronics  Title  M2 LCU Page  Internal Wiring Diagram  Part 2  1A  1 FDR                Document Number  File Name   Issue   Rev
5.              A  GR      CHB B         CHB  B          CHC 2          CHC  Zz    _     SYNC_U im  SYNC U  5m      SYNC V     SYNC V  15           SYNC W om  SYNC  W  1m       5V     DGND 13                         Lenght TBD       Quantity 3 units      D Sub Housing connected to shield    Complete double electrical test  pin to end and check for shorts between lines     Fix the cable firmly to the cover to have EFECTIVE strain relief                                            pink  grey  yellow  green  white  brown  Left without connector and  insulation removed at the end of  violet each wire for testing   black  PAIR   yellow brown white yellow  white green NOT USED  brown green  red blue  grey pink  red  blue  E     European Southern Observato  Drawn   17 06 03   JA      5       y  3 6   2  Cheka               Control Electronics  Title  Page  Cable  4 Encoder Input Signals to AC Servo Amplifier   ut  114A 17 06 03   JA   Document Number  File Name   Issue  Revisions Date   Init   3P6 DSD ESO 60400 0001 Cable4 SKF                            DIN rail mounted circuit  One per axis  Focus     2N2907    R3    1 2 3 4 upper          5 6 7 8 lower 1    J  1  2  3  4  5  6  7  8  9    2  2907  10   25V  R6  K6               European Southern Observatory La Silla    itle  Limit Switches Signal Conditioning Circuit    ize Document Number  A 001 J  Alonso File  L MSW1 OPJ    Date  Sunday  June 15  2003 heet  2       Limit Switches Signal Conditioning                 LED 2003         
6.        5 6 M2 Limit Switches Signal Conditioner                   Cannon        9 pins female  Cover with nut fixations    Cable  2 FOCUS DSUB 9  Connected to this connector    RED    Connected to the LCU  5V across a 1A fuse     BLACK    5  1       4         NOTES       Lenght 2 5 m     Quantity 1 unit     Complete double electrical test  pin to end and chek for shorts between lines     Fix the cable firmly to the cover to have EFECTIVE strain relief     Each cable is fitted with female pins and shrinking  tube for insulation  The connection to the Mitutoyo  cable connector is done inserting pin by pin  We are  buying the special connector for the final version    yellow Phase   B    HN Phase  B    green Phase  A                                                       To MITUTOYO  brown Phase  A linear encoder connector  pink  5V  white GND                        2    Linear Encoder Cable Connector  Ig Type RM12BPG 6P  Mafg  Hirose    2 6  Pin Assignment  e3       15V  4 2  Phase A        Phase B   4   Phase A   5  GND  6   Phase B   PE     European Southern Observato  Drawn   24 01 05   JA            y  3 6 M2  Cheka        hi   Control Electronics  Title                    Focus Mitutoyo Linear Encoder Connection   1 1  1    24 01 05   JA   Document Number  File Name   Issue  Revisions          Init   3P6 DSD ESO 60400 0001 Cable5 SKF                         
7.     ACSA Y   LSWC Y  VMEASA   VMEASA   Colour            Y Ke       M       Red 1        5 Black 2  Shield 71 ke  Shield  2 1                   8 Pink 2  Phase  A A6 Grey 3  Phase       7 Yellow 4  Phase  B B5 Green 5  Phase  Z A4 White 6  Phase  Z A2 Brown 7          Lim      Violet 3  Low  Lim D3 Black 7  GND C6 Blue 7 10        15      2 Red 9 9                         Table 6   Cable  1 Y   Channel  3 VMEASA to          Y  ACSA Y  LSWC Y      See  Cable  1 VMEASA to Servo Amplifier and Conditioning           Schematic   Label     Cable   1 Y      Shield  1 connected to terminal  3 in series with a 51ohm resistor and 10      capacitor  see    Cabling Layout    Schematic               15    3p6 M2 CONTROL ELECTRONICS                                  24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001  Signal Term     Pairs   ACSA F  Name TSCI      Colour X7  Shield 1 9  Phase     2 Pink 1                 3 Grey 6  Phase       4 Yellow 2  Phase  B 5 Green 7  Phase  Z 6 White 3  Phase  Z 7 Brown 8                   Table 7   Cable  2 F  TSCI    to ACSA         See    Cable  2 Terminal Strip to Servo Amplifier  Schematic   Label     Cable  2                                            Signal Term    Pairs   ACSA X   Name TSCI X   Colour X7   Shield 1 9  Phase  A 2 Pink 1                 3 Grey 6  Phase     4 Yellow 2  Phase  B 5 Green 7  Phase  Z 6 White 3  Phase  Z 7 Brown 8             Table 8   Cable  2 X  TSCI      ACSA X      See    Cable  2 Terminal Strip to Servo
8.   9 X  TSU2      HD X      Label     Cable  9 X                                       Signal TERM    Cables  Name TSU Y Colour  Brkl 1 Blue  Brk2 2 Yellow  U 3 Red  V 4 Black  W 5 White  PE 6 N A  Shield 7 Shield                Table 28   Cable  9 Y  TSU2 Y to HD Y      Label     Cable  9 Y                     Signal TERM    Pair   Name TSU3 F   Colour  SWC3A 1 Black  SWC3B 2 Blue             Table 29  Cable  10 F  TSU3 F to UL E     Label     Cable  10           3p6 M2 CONTROL ELECTRONICS    Page 24       Design Document                                                    Signal TERM    Pair  Name TSU3 X   Colour  SWC3A 1 Black  SWC3B 2 Blue  Table 30  Cable  10 X  TSU3 X to UL X    Label     Cable  10 X    Signal TERM    Pair  Name TSU3 Y   Colour  SWC3A 1   1        SWC3B 2           Table 31  Cable  10 Y  TSU3 Y to UL Y    Label   Cable   10 Y                                                                              Signal TERM    Pair  Name TSU3 F   Colour  SWD3A 3 Black  SWD3B 4 Blue  Table 32  Cable  11_F  TSU3_F to LL F    Label     Cable  11         Signal TERM   Pair  Name TSU3_X   Colour  SWD3A 3 Black  SWD3B 4 Blue  Table 33   Cable  11 X  TSU3      X    Label     Cable  11 X    Signal TERM    Pair  Name TSU3 Y   Colour  SWD3A 3 Black  SWD3B 4 Blue  Table 34  Cable  11 Y  TSU3 Y to LL Y    Label   Cable 211 Y      24   06   2005    Doc  3P6 DSD ESO 60400 0001    Page 25    3p6 M2 CONTROL ELECTRONICS             24   06   2005  Design Document Doc  3P6 DSD ESO 60
9.  Amplifier  Schematic   Label     Cable  2 X                                                Signal Term    Pairs   ACSA Y   Name          Y   Colour XI   Shield 1 9  Phase     2 Pink 1                 3          6  Phase     4 Yellow 2  Phase  B 5 Green 7  Phase  Z 6 White 3  Phase  Z 7 Brown 8             Table 9   Cable  2 X  TSCI Y to ACSA Y     Label     Cable  2 Y       See    Cable  2 Terminal Strip to Servo Amplifier    Schematic              16                               3p6 M2 CONTROL ELECTRONICS  24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001  Signal   ACSA F  Pair   LSWC F  Name X3 Colour                 11 Violet 4  CWL 10 Black 8  Table 10   Cable  3 F  ACSA F to LSWC         Label     Cable  3              Signal    X3    ACSA X    Pair   LSWC X  Colour                    CCWL       11    Violet 4                   10    Black 8        Label   Cable 23 X      CWL  Table 11  Cable Z3 X  ACSA XtoLSWC X        Signal    ACSA Y    X3    Pair   LSWC Y  Colour                    CCWL    11    Violet 4                   10    Black 8        Label     Cable  3 Y      CWL  Table 12            3 Y  ACSA Y to LSWC Y        Page 17    3p6 M2 CONTROL ELECTRONICS    24   06   2005    Design Document Doc  3P6 DSD ESO 60400 0001                                                                               Signal ACSA F Pairs Term    Name X9 Colour TSUI F  CHA 1 Pink 1          6 Grey 2         2 Yellow 3  CHB  7 Green 4  CHC 3 White 5  CHC  8 Brown 6  SYNC U 4 V
10.  Cable  4 Y  ACSA Y to TSUI Y      See    Cable  4 Encoder Input Signals to AC Servo Amplifier  Schematic   Label     Cable  4 Y                                          Signal                 TERM     Cables   Term    Name X1 TSC2 F   Colour   TSU2 F  Brk1 1 Brown 1  Brk2 2 White 2   U U Yellow 3   V V Grey 4   W W Pink 5   PE PE Green 6   PE PE Shield 7                      Table 16   Cable  5                  amp  TSC2 F to TSU2 F      Label     Cable  5           Page 19  3  6   2 CONTROL ELECTRONICS    24 06 2005  Doc  3P6 DSD ESO 60400 0001       Design Document                                        Signal   ACSA X   TERMZ   Cables   Term   Name X1 TSC2 X   Colour   TSU2 X  Brk1 1 Brown 1  Brk2 2 White 2   U U Yellow 3   V V Grey 4   W W Pink 5   PE PE Green 6   PE PE Shield 7                      Table 17   Cable  5_            X  amp  TSC2 X to TSU2 X      Label     Cable  5 X                                          Signal   ACSA Y   TERM     Cables   Term    Name Xl TSC2 Y   Colour   TSU2 Y        1 1 Brown 1  Brk2 2 White 2   U U Yellow 3   V V Grey 4   W W Pink 5   PE PE Green 6   PE PE Shield 7                      Table 18   Cable  5 Y  ACSA Y  amp  TSC2 Y to TSU2 Y      Label     Cable  5 Y                                    Signal   LSWC F   Pairs   TERM    Name    Colour   TSU3 F  Shield Earth Earth  SWC3A 1 White   SWC3B 2 Yellow  SWD3A 5 Brown  SWD3B 6 Green             Table 19  Cable  6 F  LSWC    to TSU3 E     Label     Cable  6           Design Documen
11.  Document Number  File Name   issue  Revisions          int 3P6 DSD ESO 60400 0001 Meblock1 skf                                     Figure 1  M2 Control Electronics Block Diagram             9    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       2 4  Focus  X and Y Position and velocity control loops    The rotation and angular positioning of the M2 drive screws is performed by means of  nested position and velocity control loops     The main loop is the position control loop starting with an incremental encoder to sense  the relative angular position of the motor  A dedicated VME motion controller                  AP4  compares the sensed position with the position command value  calculated by the main instrument control software and generates a corrective action      10       range  to the AC servo amplifier  AP5   The configuration software sets the  position controller parameters like integration gain  maximum speed  software limits   initialization point  etc     The second loop 18 the velocity control loop  The corrective output signal     10V   generated by the position control loop is sent to the AC servo amplifier trough the  VME driver amplifier VME4SA  AP1   this is to have all the limit and init switches  signals compatible with the VLT software  The AC motor velocity is measured by  means of the same incremental encoder coupled to the motor axis used to measure the  screw angular position  The velocity value is compar
12.  feedback and add a linear 45mm stroke        resolution  2um precision Mitutoyo  encoder  measuring directly over the focus carriage  for the focus position feedback   Refer to 7 12 for the connection details     4  Electronics Cabinet    The control electronics is mounted on top of the M2 unit inside a hermetically sealed  Kn  rr cabinet equipped with an active heat exchanger unit  The cabinet houses    VME  LCU  three AC servo amplifiers and support circuitry     4 1  VMELCU  The VME LCU is integrated by the following components     ESO standard VME RACK  with minimized depth    10 Slots VMEBUS with Active Termination and Auto Daisy Chain  MVME 712M Transition Module for the CPU I O   MVME 2604 Power PC 604 32 bit microprocessor 33MB RAM memory  MAC4 INC MACCON Motion Controller Module  AP4    VMEASA I ESO DC Servo Amplifier type 1  2 Amps capacity   AP1   2X KNIEL 15V 1 6A DC Power Supply    VME Power Supply KNIEL FPM 300W    Refer to 7 2 7 3 7 4 drawings for a schematic view of the VME LCU     VVVVVVV WV    42       Servo Amplifiers    Three AC Servo Amplifiers type SC 510 are mounted inside the cabinet as shown on  7 5  Refer to  AP5  for a detail description of the SC 510     4 3        45   Component Adapter Configuration    For each channel the VME4SA has an eight pin dual in line socket for plug in a small  component carrier whose components are dependent on the application  refer to  AP1   page 8 for a detailed explanation   In this application the configuration fo
13.  ge Cabling Layout       X    1 1  Electronic 5 Cabinet 1    17 06 03          Document Number  File Name   Issue  Revisions Date   Init   3P6 DSD ESO 60400 0001 Layout   SKF                                                                                                                                                                   1  RESISTORS 1 2W  M         10 Ohms  M      52    10 Ohms P  Phase   A            2    x  Phase A     A6 Jr  Phase B B    B7 27     Phase D B  B5 2                   A2 Z      4 Jr  Phase Z Z    2 2         UPPER LIMIT POS  P         2        C5 2        LOWER LIMIT POS  N    D3  gt       D5  gt e  GND   C6  gt e  Vx  15V    D2 24     HARTING HART PACK  CONNECTOR  NOTES     Lenght 1 5m    Quantity 3 units      Complete double electrical test  pin to end and chek for shorts between lines     At the Harting connector side the cables must point downward when plugged                               in the VME4SA backplane     The 10 Ohm resistors shall be inside the Harting connector cover properly insulated     Use heat shrinkable tube at the Harting side to fix the cables firmly to the cover and    have EFECTIVE strain relief     Shield  1                                           red  black   Shield  2  pink  grey  ll  Seen  Left without connector and  green insulation removed at the end of  each wire for testing   white  PAIRS   b white green brown green  rown red blue grey pink     yellow brown white yellow  violet NOT USED  black  blue  red  Da
14. 400 0001  Signal  Name TSUI Colour  Neutral 1 Black  F20 2 Black                Table 35  Cable  12  TSU1 to Catastrophic Limit Switches Chain       Label     Cable  12        6  SPARE PARTS LIST    Item   Description Qty  1 Harmonic Drive Servo Amplifier SC 510   2 MVME712 VME CPU transition module   3 KNIEL        gt  CP 15 1 6 power supply   4 AC Servo Armonic Drive Actuator FHA 25B  with brake   5   6                      Line Filter Schaffner FN350 8 29  3 6 M2 Limit Switches Signal Conditioner Module                                         Page 26    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       7    DRAWING and SCHEMATIC DIAGRAM APPENDIX    The drawings and circuit schematic diagrams are listed below and annexed to this  document as eleven A4 format sheets     7 1  Block Diagram   7 2    2     0 Chassis Layout   7 3  M92 LCU Internal Wiring Diagram  Part 1    7 4  M2 LCU Internal Wiring Diagram  Part 2    7 5    2 Rack Layout Rear View   7 6  Cabling Layout   7 7  Cable  1 VME4SA to Servo Amplifier and Conditioning PCB  7 8  Cable Z2 Terminal Strip to Servo Amplifier   7 9  Cable   4 Encoder Input Signals to AC Servo Amplifier  7 10  Limit Switches Signal Conditioning Circuit   7 11  Limit Switches Signal Conditioning PCB    7 12  Focus Mitutoyo Linear Encoder Connection                      M2 TOP UNIT MINI RACK                                                                                                             
15. A 25B 3015E E150 are used  for rotating the focus  X and Y driving screws  These actuators integrate a brushless  AC motor together with a harmonic reduction gear and an incremental 1500 PPR  optical shaft encoder coupled to the motor axis  Each linear drive is complemented by  end of stroke high precision limit init switches together with coarse catastrophic limit  switches     Every actuator is accompanied by three screw terminals group       the connections  from the actuator and limit init switches are routed trough these terminals to the control  LCU power amplifiers cabinet  The signal groups correspond to  AC motor drive   incremental encoder and limit init switches     The control electronics is mounted on top of the M2 unit inside a hermetically sealed  Kn  rr cabinet equipped with an active heat exchanger unit  The cabinet houses a VME  LCU  three AC servo amplifiers and support circuitry     Externally the control cabinet receives  the mains 220VAC supply  the Ethernet  connection  one inlet and one outlet coolant hoses  By opening the rear door an external  PC could be connected via RS232 to each AC servo amplifier and the LCU console  port  This is for setup and engineering monitoring of the servo amplifiers and VME  CPU configuration              8    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       From the control cabinet three identical groups of signals are routed to its close  neighbour the M2 drive     2 3  Mo
16. AFFNER  FN350 8 29    THERMOSTAT  Kg Schroff  60715 001       Weidmuller     SAKS 1 35    fuse 250mA       S20  SC    L    CABINET PE                        AC Servo Amp   L  Nand PE connected       1    See ACSA n to the power distribution      Wiring over   5 Unit    Output     Cable 48 n    e        MN i x      9 E   Cabes4n     HARMONIC    Encoder             DRIVE    Input          Brake Power      3           RI Supply           R2 329    d       R TSC2 nj    IS ran  HD n             SI    X1 U 6              5                      W  S                        Cable  10             PAMER mm Upper Limit    Limit Switches Signal Conditioner   4   Cable  6 n        LSWC n               5 ge i   Cable  11    69 earth              BAUMER ken Lower Limit           LL n        rv T        EE EE 1        E CRDI   Mee S            7   S15 Cable  12       gt  2 ran    Catastrophic      3 Schuko outlets              LCU  Cooling Unit  1 spare       Catastrophic                   Catastrophic mem       t          Catastrophic                     b      H  Catastrophic sw          Catastrophic Limit Chain            Catastrophic mem    Direoty Wied      Wiring over M3 Unit    to each                                                                           TP MINISTER ME n  ron  LN       Cable Strain Relief  Mains Relay Holding Coil Circuit  Date   Init     Eur n hern rv                      uropean Southern Observatory  3 6 M2  Cheka         n Control Electronics  pr   Title     Pi 
17. Aires BIBUNT TP  Pr 13  6                      8    18              20 22 2220                               25  7  DRAWING AND SCHEMATIC DIAGRAM                              2    2  4 4      1090        26  7 1    BLOCK DIAGRAM EEE Ie                     A           26  EE ER CU CHASSIS LAY OUT EE 26  7 3    M2 LCU INTERNAL WIRING DIAGRAM  PART 1     26  7 4    M2 LCU INTERNAL WIRING DIAGRAM  PART 2     nemen enne 26  7 5    M2 RACK LAYOUT REAR VIEW    5 aiiis                 eve                             26  7 65     GCABEINGISAXOU Ts         eet                              a      26  77  CABLE  1 VME4SA TO SERVO AMPLIFIER AND CONDITIONING                             eee 26  7 8    CABLE  2 TERMINAL STRIP TO SERVO AMPLIFIER eene      26  7 9    CABLE   4 ENCODER INPUT SIGNALS TO AC SERVO AMPLIFIER            eee eene 26  7 10  LIMIT SWITCHES SIGNAL CONDITIONING CIRCUIT        enne enhn nnne 26  7 11  LIMIT SWITCHES SIGNAL CONDITIONING PCH          nnne 26  729  FOCUS MITUTOYO LINEAR ENCODER CONNECTION        ssssssssececsesssseceeececsesssaeceeececsensntsseeceeees 26    INDEX OF FIGURES AND TABLES    FIGURE 1  M2 CONTROL ELECTRONICS BLOCK                               2     4 412 10 00000000000000000000      8             4    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       TABLE 1  FHA 25B 3015E E150 HARMONIC                10  TABLE 2  ABSOLUTE MAXIMUM MECHANICAL TRAVEL               cerent nee enne      10  TABLE 3   COM
18. EUROPEAN SOUTHERN OBSERVATORY    Organisation Europ  enne pour des Recherches Astronomiques dans l H  misph  re Austral  Europ  ische Organisation f  r astronomische Forschung in der s  dlichen Hemisph  re       LA SILLA OBSERVATORY    3p6 M2 CONTROL ELECTRONICS    Doc  No   3P6 DSD ESO 60400 0001    Issue  2 0    Date  24     January   2005    Prepared  J  Alonso    Name Date Signature    Approved  G  Andreoni    Name Date Signature    Released  G  Andreoni    Name Date Signature             2    3p6 M2 CONTROL ELECTRONICS    Design Document       24   06   2005  Doc  3P6 DSD ESO 60400 0001    CHANGE RECORD    Section Paragraph  28 05 2004    25 06 2004    24 01 2005    Several corrections    additions    Mains power   distribution modification   Several corrections As built  Section 3 Focus  X and   Y limit range    Focus Mitutoyo   Available spare parts list   added        Page 3    3p6 M2 CONTROL ELECTRONICS       24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001  INDEX OF CONTENTS   1   INTRODUCTION e                                                                      5  1 1                                     incite IRR EE EES EE SE 5  12   REFERENCE DOCUM N S                 e nenne        en eren ee                        5  133     APPELICABEE  DOCUMENTS E etre              EE EE 5  1 4  ACRONYMS  amp  ABBREVIATIONS                                                   6  2  M2 MOTION CONTROL    ere                                                              
19. LS H ARM          INTERNAL TEMP  SENSOR 4105 50W     M  Mt     European Southern Observatory  EXTERNAL TEMP  SENSOR        me         3 6 M2  Chckd   6   jos re Control Electronics  Title               a Block Diagram     1 1  1   FDR 06 05 03         Document Number  File Name   Issue   Revisions Date Init 3P6 DSD ESO 60400 0001 M2block1  skf                               M2 LCU FRONT SIDE VIEW    P    KNIEL 15V 500mA    6HE  1    BLIND PLATE   BLIND PLATE   BLIND PLATE  1    BLIND PLATE  BLIND PLATE  BLIND PLATE  BLIND PLATE      KNIEL 15V 500mA                               LEGENDE     RACK  ESO Standard  minimize deepth    VMEBUS  10 SLOTS   ACTIVE TERMINATION   AUTO DAISY CHAIN  CPUIO  TRANSITION MODULE MVME 712M   CPU MOTOROLA   MVME167   MAC4 INC  MACCON   MOTION CONTROLLER   VME4SA  ESO   DC SERVO AMPLIFIER TYPE 1  2Amps    2X KNIEL 15V 1 6A Power Supply   VME PS  KNIEL FPM 300W FOR VME BUS SUPPLY       BLIND PLATE    BLIND PLATE       BLIND PLATE    BLIND PLATE       BLIND PLATE    BLIND PLATE       BLIND PLATE    BLIND PLATE       BLIND PLATE    BLIND PLATE                         REAR SIDE VIEW          MVME 712M  CPUIO                                                            pas s   European        Observatory  A Control Electronics  Title  M2 LCU     Chassis Layout un    1 FOR 06 05 03          Document Number            Issue  Revisions Date   Init 3P6 DSD ESO 60400 0001 M2 LCU skd                                                                                
20. Measured   VLT Very Large Telescope  LCU Local Control Unit   NTT New Technology Telescope  PCB Printed Circuit Board  RAM Random Access Memory  TTL Transistor Transistor Logic  PPR Pulse Per Revolution    ZD Zenith Distance             7    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       2  M2 MOTION CONTROL    2 1  Motion Control Concept    The concept developed for the motion control of the App M2 unit is based on the  standard motion control components used by ESO to build instruments  This approach  brings various advantages like  reduced development and manufacturing costs  past  proven experience  standardised components and shared spare parts     The standard VMEASA 15 used as usually done with the MACC INC companion          difference with the more typical implementations is that here the VMEASA does not act  as the drive motor power amplifier but as a signal driver for a specialized  high power   AC servo amplifier  However the limit and init switches interface capabilities of the  VMEASA are still fully used  The advantage of this approach is that the specialized AC  servo amplifier is absolutely transparent to the VLT software     2 2               Control Components  The motion control electronic components used for the M2 are      gt                            and VME 4SA          VLT standard modules    gt  Harmonic Drive AC Servo Amplifier SC500 510      5     Three Harmonic Drive Systems servo actuators type FH
21. PONENT ADAPTER CONFIGURATION        netten                                   12  TABLE4  CABLE  1 F   CHANNEL  1 VME4SA TO TSCI              F LSWTO                                    13  TABLE 5   CABLE  1 X   CHANNEL  2 VME4SA TO          X  ACSA X  LSWC                                  14  TABLE 6  CABLE  1 Y   CHANNEL  3 VME4SA               Y  ACSA Y LSWO                                  14  TABLE 7   CABLE  2_F  TSC1_F TO ACSA Ei 15  TABLE 8              2 X  TSCI                 XI 15  TABEEOSCABEBZ2 X  ELSCl Y TOAGSA  Y  EE 15  TABLE 10  CABLE   3 F  ACSA F TOLSWO               020    040 00000 nenne nen nennen trente nen renes 16  TABLE 11               3 X  ACSA XTOLSWO X     eene nennen rre 16  TABLE 12  CABLEZ3 Y  ACSA Y TOLSWO Y     eene nennen nnne 16  TABLE 13              4 F  ACSA F TO TSUI E 17  TABLE 14              4 X  ACSA X TO TSUI X     nennen eene nennen trennen nennen nnns 17  TABLE US  CABLE  4  Y   ACSA  Y TO TSUT NA EE 18  TABLE 16              5 F  ACSA F amp  TSC2        TSUA EL 18  TABLE 17              5 X  ACSA X  amp        2            02               19  TABLE 18              5 Y  ACSA Y  amp  TSC2 Y TOTSU2         0000  0 0081 19  TABLE 19  CABLE  6 FF LSWC        TSU3_F  eterne nennen nen ree rennen nennen 19  TABLE20              6 X  LSWC X TOTSUS3 X  en e e eene nnne nennen trennen ener nnns 20  TABLE 21  CABLEZ6 Y  LSWC Y TO TSU3 Y                    detener erred 20  TABLE22              ISCT TOTS EE DEE 20  TABLE 23   CABLE  8 F  
22. TSUI            E  21  TABLE 24  CABLEZ8 X  TSUI XTOHD Ni 21              52            8 Y   TSUT          Y EE 22  TABLE 26  CABLE  9  F  TSU2  F TO HD                                eere e ee Ended 22  TABLE 27  gt  CABLE   9  X  TSU2  X TOHD       eese eie eii e aai 23  TABLE28  CABLEZ9 Y  TSU2 Y TOHD Y            23  TABLE29  CABLE   10 F  TSU3 F TO ULF  EE 23  TABLE 30  CABLE IO  X  TSU3 X TO UL   E                     cett                                    ree et eaa ens 24  TABLESIZCABLE  IO Y  ISUS Y TO UE       ha eee t aye          Re e 24  TABEE32 CABLE   11  F  TSU3  F TOLL  P     esce ete tertie ie died 24  TABLE 33               11 X  TSU3 X TOLL Ni  24  TABLE34 CABLE   1  Y  TSU3 Y TOLL           e nte eae edic ees 24    TABLE 35   CABLE  12  TSU1 TO CATASTROPHIC LIMIT SWITCHES CHAIN           25    Page 5    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       1  INTRODUCTION    Since ever the 3 6 telescope f 8 secondary unit has suffered from severe mechanical  instabilities  This together with the inability to introduce online corrections to the  decentring comma has severely limited the optical performance of the telescope   Considering that the new generation of instruments  e g  HARPS  need to exploit the  maximum possible optical image quality attainable with the telescope  a new  mechanical design based on the NTT secondary unit concept was designed and built   The new unit is equipped with VLT complaint comp
23. aximum Motor Speed Rpm 4000  Resistance Q 3 7  Inductance mH 5  Weight Kg 4 7  Encoder Resolution Ppr 1500  Encoder Output Signals   A A  B B  C C  U U   V  V W  W    5V Line Driver             Table 1  FHA 25B 3015E E150 Harmonic Drive       The init limit switches        BAUMER type                g       e The catastrophic limit switches are Omron type D4D 1532N    e The driving screws are of the zero backlash type equipped with roller screw  nuts  The pitch is 1 millimetre                    Focus mm     20  X mm     6 2  Y mm     6 5             Table 2   Absolute Maximum Mechanical Travel    e The focus limit switches adjustment is set to    16mm for the normal limit and       16 5mm for the focus catastrophic limit                 11    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001          The X and Y limit switches adjustment is set to    Smm for the normal limit  and    5 5mm for the X and Y catastrophic limit     3 2  Focus Linear Encoder    Originally the three axes focus  X and Y were equipped with rotary encoders inside the  AC servo drive actuators  These actuators drive the mechanism screw directly and  assume that the screw nut combination is backlash free  From these encoders the  velocity and position feedback for the control system is derived    During the preliminary tests we found that the focus screw nut combination has a  backlash greater than 100um  It was decided to keep the rotary encoder for the velocity 
24. d  2 1  Phase  A   8 Pink 2  Phase  A A6 Grey 3  Phase       B7 Yellow 4  Phase  B B5 Green 5  Phase  Z A4 White 6  Phase  Z A2 Brown 7  Upp  Lim      Violet 3  Low  Lim D3 Black 7  GND C6 Blue 7 10  Vx  15V  D2 Red 9 9                         Table 4   Cable  1      Channel  1 VME4SA to TSC1_F  ACSA_F  LSWC F      See    Cable  1 VMEASA to Servo Amplifier and Conditioning PCB    Schematic   Label     Cable  1           Shield  1 connected to terminal  3 in series with a 5lohm resistor and 10nF  capacitor  see    Cabling Layout    Schematic      3p6 M2 CONTROL ELECTRONICS    Design Document    Table 5         Page 14                                                                         24   06   2005  Doc  3P6 DSD ESO 60400 0001  Signal Pin   Pairs   Term    ACSA X   LSWC X  VMEASA   VME4SA   Colour            X Ke     M              1        5 Black 2  Shield 71 27   Shield  2 1                   8 Pink 2  Phase  A A6 Grey 3  Phase     B7 Yellow 4  Phase  B B5 Green 5  Phase  Z A4 White 6  Phase  Z A2 Brown 7          Lim      Violet 3  Low  Lim D3 Black 7  GND C6 Blue 7 10  Vx  15V  D2 Red 9 9             Cable  1      Channel  2 VME4SA to TSC1 X  ACSA X  LSWC X      See    Cable  1 VMEASA to Servo Amplifier and Conditioning PCB    Schematic   Label     Cable  1 X      Shield  1 connected to terminal  3 in series with a 5lohm resistor and 10nF  capacitor  see  Cabling Layout  Schematic                                                               Signal Pin   Pairs   Term
25. ed with the commanded velocity  value coming from the MAC4 INC output and the error signal is filtered by a digital  PID inside the servo amplifier  The PID filter parameters are defined by the aid of a MS  Windows program talking via RS232 to the amplifier during configuration  The  parameters are kept in a flash memory inside the amplifier     Each function  focus  X and Y is equipped with limit init and catastrophic limit  switches mounted at the end of stroke of each function  The mechanical configuration  is such that during normal operation the limit init switches are only actuated but in case  of malfunction the carriage will continue moving actuating the catastrophic limit switch  as well     3p6 M2 CONTROL ELECTRONICS    Design Document       Page 10    24   06   2005  Doc  3P6 DSD ESO 60400 0001    3  M2 DRIVES ELECTROMECHANICAL COMPONENTS                                                                      3 1  Focus  X and Y Drive Components       three axis use identical electromechanical components     Rated Output Power W 160  Rated Output Torque Nm 51  Maximum Output Torque Nm 157  Max  Continuous Stall Torque Nm 71  Rated Output Speed Rpm 30  Maximum Output Speed Rpm 40  Rated Current Arms 1 4  Maximum Current Arms 3 2  Ratio   100  Torque Constant Nm A 60  Voltage Constant V Rpm 6 4  Mechanical Time Constant ms 6 8  Electrical Time Constant ms 1 4  Moment of Inertia  output             2 3  Power Supply for control Unit VAC 230  Rated Motor Speed Rpm 3000  M
26. iolet 7  SYNC U  5 Black 8  SYNC V 10 White green 9  SYNC     15 Brown green 10  SYNC W 9 Red blue 11  SYNC W  14 Grey pink 12   5V Enc  11 Red 13  DGND 13 Blue 14  Shield D Sub 15  Housing       Table 13   Cable  4                 to TSUI         See  Cable  4 Encoder Input Signals to AC Servo Amplifier  Schematic     Label     Cable  4                                                                                      Signal ACSA X Pairs Term    Name X9 Colour TSUI X  CHA 1 Pink 1          6          2         2 Yellow 3  CHB  7 Green 4  CHC 3 White 5  CHC  8 Brown 6  SYNC U 4 Violet 7  SYNC U  5 Black 8  SYNC V 10 White green 9  SYNC V  15 Brown green 10  SYNC W 9 Red blue 11  SYNC W  14 Grey pink 12   5V Enc  11 Red 13  DGND 13 Blue 14  Shield D Sub 15  Housing       Table 14  Cable  4_X  ACSA_X to TSUI X                    18    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001        See    Cable  4 Encoder Input Signals to AC Servo Amplifier  Schematic   Label     Cable  4 X                                                                                 Signal ACSA Y Pairs Term     Name X9 Colour TSUI Y  CHA 1 Pink 1          6          2         2 Yellow 3  CHB  7            4         3 White 2          8 Brown 6  SYNC U 4 Violet 7  SYNC U  5 Black 8  SYNC V 10 White green 9  SYNC V  15 Brown green 10  SYNC W 9 Red blue 11  SYNC Wi 14 Grey pink 12   5V Enc  11 Red 13  DGND 13 Blue 14  Shield D Sub 15  Housing          Table 15 
27. isions Date   Init 3P6 DSD ESO 60400 0001 M2 LCU 02 skd                            LIMIT SWITCHES  CONDITIONER    LIMIT SWITCHES  CONDITIONER    LIMIT SWITCHES  CONDITIONER       This surfaces shall be in the same plane                               HARMONIC DRIVE HARMONIC DRIVE HARMONIC DRIVE  AMPLIFIER AMPLIFIER AMPLIFIER  490 mm  20 mm  COOLING UNIT  REAR SIDE  60mm           Lg        60mm                       COOLING UNIT  SUPPORTED OVER SLIDING RAILS    TO ALLOW A 25mm CLEARENCE BELOW                                                                             Date   Init    Drawn  200408   JA European er Observatory   Chekd        Set Control Electronics   Tite  M2 Rack Layout Page  Rear View 1 1   1 FDR 060503          Document Number                    Issue   Revisions Date  hit 3P6 DSD ESO 60400 0001 rack skf                         CH1  CH2  CH3  CH4    VME4SA    Weidmuller     SAKS 1 35  fuse 10A    Inrush    Supressor    6A 7    Schrack  Relay  MT306230  230V coil  250V 10A    CABINET  EXTERNAL  BREAKER  Switch LE2 16 1752 2  Knob LFS2 N6 175    L N PE  230VAC  UPS SUPPLY  FROM SCP                 1 n       SS            CN  SN                                    n       x3  FOCUS  X  Y        Cable 43 n                   Cable  2 n a X7      R1 and R2 connected  to the power resistor           x3  FOCUS  X  Y           LIN LOUT UN    NN      MN         PEIN           PEIN                     OVERVOLTAGE  PROTECTION  HT 2PE 230VAC    RFI  POWER LINE  FILTERS  SCH
28. me TSUI X Colour  CHA 1                     2 Green white  CHB 3 Grey  CHB  4 Grey white  CHC 5 Yellow  CHC  6 Yellow white  SYNC U 7 Brown  SYNC U  8 Brown white  SYNC V 9 Blue  SYNC V  10 Blue white  SYNC W 11               SYNC WI 12 Orange white   5V Enc  13 Red  DGND 14 Black  Shield 15          Table 24   Cable  8 X  TSUI Xto HD X      Label     Cable  8 X      Page 22    3p6 M2 CONTROL ELECTRONICS                                                                            24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001  Signal TERM    Pairs  Name TSUI Y Colour  CHA 1 Green  CHA  2 Green white  CHB 3 Grey  CHB  4 Grey white  CHC 5 Yellow  CHC  6 Yellow white  SYNC U J Brown  SYNC U  8 Brown white  SYNC V 9 Blue  SYNC V  10 Blue white  SYNC W 11               SYNC W  12 Orange white   5V Enc  13                  14 Black  Shield 15                   Table 25   Cable  8 Y  TSUI Y to HD Y      Label     Cable  8 Y                                             Signal TERM    Cables  Name TSU2 F Colour  Brkl 1 Blue  Brk2 2 Yellow   U 3 Red   V 4 Black   W 5 White   PE 6 Green  Shield 7 Shield   Table 26   Cable 79 F  TSU2 F to HD F      Label     Cable 29           3p6 M2 CONTROL ELECTRONICS    Design Document       Page 23    24   06   2005    Doc  3P6 DSD ESO 60400 0001                                     Signal TERM    Cables  Name TSU2 X Colour  Brk1 1 Blue  Brk2 2 Yellow  U 3 Red  V 4 Black  W 5 White  PE 6 Green  Shield 7 Shield                Table 27   Cable
29. r channels 1  2 and 3 is identical and as shown in  the table below    Pin  row 1   Pin row 2   Component  1 8           2 1 360K                                  12    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       3 6 Wire jumper  4 5 Open                      Table 3   Component Adapter Configuration    4 4  Cabinet Cooling Unit    The cabinet cooling unit used is the ESO standard  VLT Electronic Cabinet Cooling  System   AP3   The unit is mounted on the bottom of the cabinet with adequate  clearance around it for the proper air circulation  Two PT100 elements  one mounted  over a heat sink in the outer wall of the cabinet and the other in contact with the inner  wall of the cabinet  are used by the cooling system for keeping the internal temperature  the same as the exterior and thus avoiding thermal gradients  The heat is removed from  the unit by means of circulating water    Note that the cooling unit fans are used for blowing air directly over the VME chassis   due to space limitations no supplemental fan tray is used in the application     4 5  Mains Power Distribution    AC power enters the cabinet via a double pole circuit breaker  The control knob of this  breaker is located externally over the side wall of the cabinet  Internally the AC supply  goes to a double contact power relay  The coil of the relay is energized with the mains  supply and serially connected with the catastrophic limit switches chain a thermosta
30. t    3p6 M2 CONTROL ELECTRONICS    Page 20    24   06   2005    Doc  3P6 DSD ESO 60400 0001                                     Signal   LS  WC X   Pairs   TERM    Name    Colour   TSU3 X   Shield Earth Earth  SWC3A 1 White 1  SWC3B 2 Yellow 2  SWD3A 5 Brown 3  SWD3B 6 Green 4          Table 20   Cable  6 X  LSWC X to TSU3 X      Label     Cable  6 X                                       Signal   LS  WC Y   Pairs   TERM     Name Jl Colour   TSU3 Y   Shield Earth Earth  SWC3A 1 White 1  SWC3B 2 Yellow 2  SWD3A 5 Brown 3  SWD3B 6 Green 4          Table 21   Cable  6 Y  LSWC Y to TSU3 Y      Label     Cable  6 Y                           Signal   TERM     Cables   TERM    Name TSCI Colour TSUI  Neutral 1 White 1    20 2 Black 2          Table 22   Cable  7  TSC1 to TSUI         abel     Cable  7           3p6 M2 CONTROL ELECTRONICS       Design Document    Page 21    24   06   2005    Doc  3P6 DSD ESO 60400 0001                                                                                        Signal TERM    Pairs  Name TSUI F Colour  CHA 1                     2 Green white  CHB 3 Grey  CHB  4 Grey white  CHC 5 Yellow  CHC  6 Yellow white  SYNC U 7 Brown  SYNC U  8 Brown white  SYNC V 9 Blue  SYNC V  10 Blue white  SYNC W 11 Orange  SYNC W  12 Orange white   5V Enc  13 Red  DGND 14 Black  Shield 15          Table 23   Cable  8 F  TSU1_F to HD F      Label     Cable  8                                                                                      Signal TERM   Pairs  Na
31. t  and a protection fuse  Finally the mains supply goes through an inrush suppressor an  over voltage protector and a power line filter  The power distribution after the  conditioning is as follows      gt  Direct connection to the three AC servo amplifiers    gt  Three Schucko outlets for powering the VME  cooling unit and spare     Refer to 7 6 for the schematic diagram              13    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       5  CABLING    5 1  Focus  X an Y drive units    Near each harmonic drive unit a group of three numbered screw terminal strips named  TSUI n  TSU2          TSUS3 n  where n is F X Y  to identify the particular group   serve both as test points and junction for the connections coming from the LCU cabinet  to each harmonic drive unit and limit init switches     5 2  Cabinet    The cabinet wiring is as shown on 7 6  For sake of simplicity only one channel is  shown     5 2 1  Cable Feed trough    The cables feed trough is a custom built piece which allows passing every cable and  hose to the cabinet interior keeping adequate seal to prevent the internally circulating  air of leaking to the outside environment     5 3  Inside the LCU  The LCU wiring is done as shown on 7 3 and 7 4     5 4  Wiring Tables                                                          Signal Pin   Pairs   Term    ACSA F   LSWC     VMEASA   VMEASA   Colour            F X3     M  E8 Red 1        5 Black 2  Shield  1 i be  Shiel
32. te   Init     European Southern Observato  Drawn   17 06 03   JA               3 6   2 y  Chckd          hk   Control Electronics      m P   bs Cable  1 VME4SA to Servo Amplifier       and Conditioning         1A  1    17 06 03          Document Number  File Name   Issue  Revisions Date   Init   3P6 DSD ESO 60400 0001 Cable1 SKF                                           Phase  A A   1       Phase A A   6         Phase B B  2       Phase B p   7           Phase Z Z            Phase Z Z  8                        9  Cannon Dsub 9 pins male  Cover with fixation screws  NOTES     Lenght 1 m    Quantity 3 units      Complete double electrical test  pin to end and chek for shorts between lines     Fix the cable firmly to the cover to have EFECTIVE strain relief     pink     Left without connector and                                           grey insulation removed at the end of  each wire for testing   yellow   PAIRS   green violet black  blue red  hi white green brown green     red blue grey pink  yellow brown white yellow  brown NOT USED  PEE     European Southern Observato  Drawn   17 06 03             5             3 6   2  Cheka        mes   Control Electronics  Title    8 VE P       Cable  2 Terminal Strip to Servo Amplifier        1 1  1    17 06 03          Document Number  File Name   Issue  Revisions Date   li   3P6 DSD ESO 60400 0001 Cable2 SKF                               Cannon Dsub 15 pins         e high density  Screws                Cover with fixation  CHA A    1 
33. tion Control Functions    The motion control function of the M2 comprises three identical AC servo drives  amplifier combinations with built in digital velocity loop  These units provide  incremental encoder pulses to the outside world as balanced differential signals and  receives an analogue voltage in the range of    10V as the external velocity command   On top of the velocity loop a position loop inside the control LCU utilizes the encoder  signals as feedback and delivers the required    10V velocity control signal     Normal operation init limit functions are implemented by six BAUMER type           Com g    precision switches  These switches report both to the AC servo amplifier and  the VMEASA via dedicated signal conditioning circuits mounted over small PCBs     A hardware interlocking function  called the catastrophic limit  is implemented by six  rugged limit switches mounted at the end of stroke for the focus  X and Y mechanisms   The six switches are serially connected and act over the mains power relay coil  see  Figure 1 below                                                                                                                                                                                                                                                                                                                                                                                                                                                          
34. uter controlled servo drives for the  focus  X and Y motions of the secondary mirror unit     1 1  PURPOSE AND SCOPE    This document is intended to serve as a design document  construction guide and  service manual for the 3p6 M2 control electronics    Starting from a general description and block diagram it goes all the way down to the  schematic diagrams  function tables  connection tables and references to the part list     1 2                     DOCUMENTS     RE1  3 6m Telescope  8 Top end Overhaul User Requirements 3p6 SPE   ESO 36022 0001 Issue 1 3 M  Sterzik December 12  2001     RE2    Configuration of VLT Standard VME Boards VLT MAN ESO 17210   1358 Issue 1 4 B  Gustafsson 5 October 2001    1 3  APPLICABLE DOCUMENTS             ESO VME4SA X1 4 Channel DC Servo Amplifier Technical Manual  VLT MAN ESO 17130 0273 Issue 3 0    AP2    ESO VME4SA BACKPLANE Technical Manual VLT MAN ESO   17130 0274 Issue 3 0    AP3         Electronic Cabinet Cooling System User Manual VLT MAN ESO   17130 1603 Issue 1 0 F  Biancat Marchet April 27  1998    APA    USER Manual MACCONTROLLER MAC4 INC Version 4 2    AP5    Harmonic Drive Operations Manual AC Servo Amplifier SC 500 510     AP6  X VLT SPE ESO 10000 0015 VLT Electronic Design Specification Issue   4 0 09 12 96              6    3p6 M2 CONTROL ELECTRONICS    24   06   2005  Design Document Doc  3P6 DSD ESO 60400 0001       1 4  ACRONYMS 8 ABBREVIATIONS    DC Direct Current   VME Versa Module Europe   TBD To Be Defined   TBM To Be 
    
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