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Incremental Rotary Encoder (PDF)

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									LTN
LTN Servotechnik GmbH


Incremental Rotary Encoder G1B
                                                             Housing diameter: 130 mm
                                                             Hollow shaft: ∅ 28 ... 60 mm
                                                             Line counts: 64 ... 8192
                                                             Output signals: RS422, KS, KI, 1Vpp
                                                             Connector or cable output




Mechanical Data

 G1B                                                      Hollow shaft
                                                          Type W

 ∅ Hollow shaft                                           28, 32, 38, 42, 45, 50, 60 mm

 Weight                                                   ca. 1100 g

 Accuracy                                                           360°
                                                          <±
 (up to line count 2500)                                       Line counts x 20

 Mech. permissible speed                                  max. 3.500 min-1


 Starting torque (25°C)                                   < 0,5 Nm


 Rotor inertia                                            1,1 * 10-3 kgm² ... 1,6 * 10-3 kgm²
 (depends on the specific Version)


 Vibration                                                100 m/s²; higher upon request


 Shock                                                    1000 m/s²; higher upon request


 Operating temperature                                    -25°C ... +85°C;
                                                          -40°C ... +100°C upon request for KS or KI: RS 422


 Protection class                                         IP 50, IP 64




Line counts
 64          1024          2048      2500   4096   8192         others upon request
    LTN                                                                    Incremental Rotary Encoder G1B
    LTN Servotechnik GmbH

    Dimensions (mm)
                                                                                                                            20
                                                                                                                 5                  5
                                                                                                           4,5



     optional: IP 50 (with felt ring)
                                                                            1,4
     optional: IP 64 (with sealing ring)                                                    100
     connector or cable output radial                 12,7
     optional: second torque coupling
                                             1
     axial backlash (shaft): max. ± 1,5 mm                                 ∅ 130
     2 set screw 6 x M3; SW 1,5 included                                                              H8
                                                                                                   ∅d
                                                      12




                                                                 40                                    2
                                                 ∅ d 28 ... 42


                                                                                                  20
                                                                                    5                            5
                                                                                                                      4,5




     optional: IP 50 (with felt ring)                                                                                                           1,4
                                                                                                                              100
     optional: IP 64 (with sealing ring)
                                                                                                                                         12,7
     connector or cable output radial
     optional: second torque coupling             1
                                                                                                                                                ∅63
     axial backlash (shaft): max. ± 1,5 mm                                     0                                     ∅45
                                                                            ∅13                                          H8
                                                                                                                                          12
     3 set screw 4 x M5; SW 2,5 included
                                                                                                                                                6,9


                                                                                                                                         40
                                                                                                                     3
                                                 ∅ d = 45




                                                                      47
                                                                                                                                         75°
                                                                                             5,3
                                                      8,4                                     7
                                                                                   12,7
     optional: IP 50 (with felt ring)
                                                                                   12
     optional: IP 64 (with sealing ring)
                                                                                                                            R7




                                                  1                                                                               d H8
     connector or cable output radial
                                                                                                                              6




     optional: second torque coupling
     axial backlash (shaft): max. ± 1,5 mm                                              4
                                                                  ∅ 130
     4 set screw 4 x M5; SW 2,5 included
                                                                                    ∅d




                     1                           ∅ d = 60; ∅ D = 78 or
                         CW rotation shown       ∅ d = 50; ∅ D = 68
                CW


2
LTN                                                           Incremental Rotary Encoder G1B
LTN Servotechnik GmbH

Electrical Data

 G1B                                                        Type W

 Supply voltage                                             5 V or 8 ... 30 V:         LD, SI
                                                            8 ... 30 V:                KS, KI
                                                            5 V:                       KI (-40°C ... 100 °C)


 Current requirement (without load)                         max. 150 mA


 Output load                                                ± 20 mA (RS422):           LD
                                                            50 mA:                     KS, KI
                                                            8 mA: (120 Ohm):           SI


 Output frequency                                           0 ... 160 kHz:             KS, KI
                                                            0 ... 180 kHz (-3dB):      SI
                                                            0 ... 300 kHz:             LD


 Cable length                                               max. 50 m:                 KS, KI
                                                            max. 100 m:                LD
                                                            max. 150 m:                SI


 Zero index                                                 5 = Z „high“ if A + B „high“; others upon request




Output Signals
Version:                                                                  360° el.
                                                                          (Signal period: 1 Increment)
LD = Line driver RS422                                                                          90° el. Phase difference
                                      Signal A:
KS = Push pull with                   Ratio 1:1 (nom.)
     short-circuit protection
                                                                                             TFL: min. Edge separation
KI = KS with inverted signals         Signal B:
                                      Ratio 1:1 (nom.)

                                                                                      Tv: Delay time
                                      Zero signal Z:
                                      A & B = „high“
                                      (Preferred version)

Version:
                                                                   1p = 360°     nom. 90° el.                SI: 1 Vpp

SI = 1 Vss at 120 Ohm load
                                      Signal A:
                                                                                                             SI: 1 Vpp


                                      Signal B:

                                                                                                         0,5 V

                                      Zero signal Z:
                                      (effective)
                                                                                       135° el.
                                                                                                                           3
    LTN                                                                                Incremental Rotary Encoder G1B
    LTN Servotechnik GmbH

    Connector-Terminal and Cable Designation
                                                Output circuit
           G1BW
                                       KS                                LD / KI
                                     Cable                Cable
     Function / Signal    12-pin Pur 12 x 0,19 12-pin Pur 12 x 0,19
     Signal A                5         brown                       5        brown
     Signal A                    -          -                      6         green
     Signal B                8          grey                       8         grey
     Signal B                    -          -                      1            pink
     Signal Z                3             red                     3             red
     Signal Z                    -          -                      4         black
     VCC                     12            blue                12             blue
     VCC Sense               2          violet                     2         violet
     0 Volts                 10         white                  10            white
     0 Volts Sense           11        yellow                  11           yellow
     Shield                  9       white-blue                    9      white-blue




                                                Output circuit
           G1BW
                                                      SI
                                                                       Kabel
     Function / Signal               12-pin                        Pur 12 x 0,19
     Signal A +                        5                                brown
     Signal A -                        6                                 green
     Signal B +                        8                                 grey
     Signal B -                        1                                  pink
     Signal Z +                        3                                  red
     Signal Z -                        4                                 black
     VCC                              12                                  blue
     VCC Sense                         2                                 violet
     0 Volts                          10                                 white
     0 Volts Sense                    11                                yellow
     Shield                            9                               white-blue




                 5 4                                           4 5
           6
                11
                     3                                     3   11 6
            7 12 10 2                                      2 10 12 7
              8 9 1                                          1 9 8




     Square flange receptacle 12-pin: Pin plug 12-pin:
     RC-12P2N122K00                   Metal: RC-12P2N1280EF
                                      Plastic: RC-12P1N12K0EF



     Mating connector 12-polig:              Socket coupling
                                             for pin plug:
     Socket plug for                         Metal: RC-12S1N1290EF
     square flange receptacle:               Plastic: RC-12S1N12M0EF
     RC-12S2N1280EF
4
LTN                                                                                     Incremental Rotary Encoder G1B
LTN Servotechnik GmbH

Recommended input circuitry of subsequent electronics

LD: Line driver RS 422 A
Operating voltage:             5 V ± 5 % or 8 ... 30 V
Current requirement:           max. 150 mA (without load)
                                                                  Output circuit                      Recommended input circuit
Output signals:                A, A, B, B, Z, Z
Max. output frequency:         300 kHz                            VCC = + 5V                                                  VCC = + 5V
Min. edge separation:          TFL ≥ 0,25 µs                                                                R
Level (RS422):                 VH ≥ 2,5 V (IH = -20 mA)                                                     C
                               VL ≤ 0,5 V (IL = 20 mA)                                       cable          Zo
Max. current load cap.:        Imax: ±20 mA per output
                                                                                                                                Zo = 120 ... 140 Ohm
Delay time:                    TV ≤ 50 ns                                                                                       R = 4,7 kOhm
                                                                                                            R
Switching times:               rise / fall times: ≤ 100 ns                                                                      C = 1... 10 nF
Cable length:                  max. 100 m
Operating temperature:         -25 °C ... +85 °C                                                      Line receiver e. g. DS26C32




KS: Push pull output with short-circuit protection
Operating voltage:             8 ... 30 V
Current requirement:           max. 150 mA (without load)                                             Recommended input circuit
                                                                  Output circuit
Output signals:                A, B, Z                                                                VCC = 8 ... 30V (Load against VCC)
Max. output frequency:         160 kHz                            VCC = 8 ... 30 V
                                                                                                                           Level:
Min. edge separation:          TFL ≥ 0,9 µs                                                                                VL ≤ 3 V (IL = 20 mA)
Max. current load cap.:        Imax: 50 mA per output                                                           Trigger
                                                                                              cable                        VL ≤ 3,5 V (IL = 50 mA)
Delay time:                    TV ≤ 400 ns
Switching times:               rise / fall times: ≤ 350 ns
                               (1 m cable and Iout = 50 mA)                                                        Level:
                                                                                                            RL
Cable length:                  max. 50 m                                                                           VH ≥ 3 V (IH = -20 mA)
Operating temperature:         -25 °C ... +85 °C                                                                   VH ≥ 3,5 V (IH = -50 mA)
Short-circuit protection only at zero speed !                                                         Alternativ: Load against 0 V




SI: Voltage interface 1 Vpp
Operating voltage:             5 V ± 5 % or 8 ... 30 V
Current requirement:           max. 150 mA
Output signals:                A+, A-, B+, B-, Z+, Z-             Output circuit                      Recommended input circuit
Limit frequency (-3dB):        max. 180 kHz
                                                                                                                                 C
Signal level at a              track signals:                                      Ra                  R1
load of Zo = 120 Ohm:          A, B ~ 1 V (0,8 ...1,2 V)                                                                  VP R2
                                                                                                                      -
                               index signal (effective signal):                         V+   cable     Zo                 OPV
                               Z ~ 0,5 V (0,2 ... 0,85 V)                               V-
                                                                                                                      +          OPV (e.g. MC33074)
Cable length:                  max. 150 m                                                                                        VM = (VP - VN) / 2
                                                                                   Ra                                     VN
Operating temperature:         -25 °C ... +85 °C                                                      R1                         Zo = 120 Ohm
                                                                                                                 R2       C      Ra = 47 Ohm
                                                                                                                                 VM




                                                                                                                                                       5
    LTN                                                                   Incremental Rotary Encoder G1B
    LTN Servotechnik GmbH

        Ordering           G          1B       X        X         XX XX               XXXX         -       X X X     -     XX
       Information         G          1B       3        4             5.1 5.2            6         -       7 8 9     -      10


            G              Incremental Rotary Encoder


            1B             Model series


            3              Mechanical specification
                           W = Typ W (Through hollow shaft)


            4              Hollow shaft configuration
                           H = 28 mm               7 = 32 mm             J = 60 mm
                           G = 38 mm               6 = 45 mm
                           F = 42 mm               5 = 50 mm


            5.1            Output circuit
                           LD = Line driver; RS422                               SI = Voltage interface 1 Vpp at 120 Ohm load
                           KS = Push pull with short-circuit protection          KI = KS with inverted signals


            5.2            Output channels
                           BI = channel A and B
                           IN = channel B only                                       others upon request


            6              Line counts
                           64    1024      2048     2500       4096     8192     others upon request


            7              Referenzsignal Z (Nullimpuls)
                           5 = Z „high“ bei A + B „high“                         others upon request


            8              Flange
                           D = IP 50
                           F = IP 64


            9              Connector or cable output
                           1 = Connector radial                                  4 = Cable radial with connector
                           3 = Cable radial (1m)                                 7 = Leads radial
                                                                                 others upon request


            10             Supply voltage
                           05 = 5 Volts                                          24 = 5 ... 30 Volts




    LTN Servotechnik GmbH
    Georg-Hardt-Straße 4
    D-83624 Otterfing
    Germany
    Tel:    +49 - 08024 - 60 80 - 0
    Fax: +49 - 08024 - 60 80 - 100
    E-Mail: LTN@LTN.de
6
    Internet: www.LTN.de                                    Printed in Germany. Subject to change without prior notice. Issued 03/2002

								
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