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PAGE: "Products | Sensor Systems | Micro Encoder :: Harmonic Drive LLC"
URL: http://www.harmonicdrive.net/products/actuators/me/index.php

Actuators


 

Micro Encoder

Sensor Systems
Micro Encoder


List of Features

The micro encoder series are ultra miniature three channel incremental encoders with the world's highest resolution.
Measuring as little as 7.5 mm in diameter, it provides 360 pulses per revolution (1440 with quadrature) and also provides an index pulse.

MES-6

  • The ultra-micro model
  • Dimensions ø7.5 x 10.5mm , Incremental encoder 360 line count
  • A, B, Z
  • Square wave open collector output

    MES-9 (Single shaft)
    MEH-9 (Hollow shaft)

  • The micro model
  • Dimensions ø13 x 20mm , Incremental encoder 1000 line count
  • A, B, Z
  • Square wave open collector output
  • A hollow shaft type configuration is available.

    Used for:

  • Small robots
  • Small servo motors
  • Miniaturization of current equipment design
     

  • Model Ordering Code

    ME - S - 6 - 100P - SP
    1 2 3 4
    1. Model : Micro Encoder ME Series
    2. Shaft shape : S (Single shaft), H* (Hollow shaft)
    3. Output pulses : 100, 200, 300, 360, 500*, 1000*
    4. Output circuit
  • C = Open collector output
  • None + Voltage output
  • * Hollow shaft feature and line counts of 500 and 1000 are only available in size 9

    List of Ratings

    Item/model

    MES-6- PC

    ME 9- P

    Power supply

    DC5V±10%

    DC5V±10%

    Current consumption

    30mA or less (without load)

    40mA or less (without load)

    Signal detection code

    Incremental

    Incremental

    Output

    Output pulses
    (Standard)
    [Pulses/evolution]

    100 200
    300 360

    100 200 300 
    360 500

    1000

    Output phase

    A, B, Z

    A, B, Z (Z = "H")

    Output signal

    Square wave open collector output

    Square wave open collector
    output , or, voltage output

    Output capacity

    Sink current: 4mA
    (output withstand voltage 7V)
    Residual voltage: 0.4V or less

    Sink current: 20mA
    Residual voltage: 0.5V (at 10mA)

    Max. response frequency
    (response pulses)

    100kHz

    100kHz

    Output phase difference

    A and B phase difference
    90°±45° (T/4 ±T/8)
    Z phase T ±T/2
    (see output waveform
    diagram)

    A and B phase difference
    90°±45° (T/4 ±T/8)
    Z phase T ±T/2
    (see output waveform
    diagram)

    Waveform rise
    and fall time

    2μs or less
    (output cable 300mm or less)

    2μs or less
    (output cable 140mm or less)

    Starting torque

    0.3x10-3N•m
    (3gf-cm) or less

    1.0x10-3N•m
    (10gf-cm) or less

    Permissible shaft
    load (Electrical)

    Radial

    1.9N (0.43 lb)

    1.9N (0.43 lb)

    0.98N (0.22 lb)

    Thrust

    0.98N (0.22 lb)

    1.9N (0.43 lb)

    0.98N (0.22 lb)

    Permissible Max. revolutions (Mechanical)

    6000r/min

    6000r/min

    Operating temperature/humidity

    0°C∼60°C
    RH35%∼90%
    No condensation

    0°C∼60°C
    RH35%∼90%
    No condensation

    Storage temperature

    -20°C∼80°C

    -20°C∼80°C

    Resistance to vibration

    Frequency 55Hz,
    double amplitude 1.5mm
    Withstands 2 hours
    each in X, Y and Z directions

    Frequency 55Hz,
    double amplitude 1.5mm
    Withstands 2 hours
    each in X, Y and Z directions

    Resistance to shock

    500m/s2 (about 50G)
    Withstands 3 cycles
    each in X, Y and Z directions

    500m/s2 (about 50G)
    Withstands 3 cycles
    each in X, Y and Z directions

    Cable

    Vinyl sheathed (AWG32)
    Cable length 300mm

    Vinyl sheathed (AWG30)
    Cable length 140mm

    Mass

    5g

    10g


    Product Drawing

    Product Drawing


    Output Circuit

    Output Circuit


    Output Waveform

    Output Waveform

    Output Waveform



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