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GE-A Series Sine/ Cosine Output Signals Gear Type Encoder

short description:

The GE-A Gear Type Encoders are non-contact incremental encoders for rotary speed and position measurement. Based on Gertech’s unique Tunneling Magnetoresistance (TMR) sensor technology, they provide orthogonal differential sin/cos signals with high quality, along with an index signal and their inverse signals. The GE-A series are designed for 0.3~1.0-module gears with different teeth numbers.


  • Size: 210*88mm
  • Resolution: 25ppr,100ppr
  • Supply Voltage: 5v, 12v, 5-24v(+-10%)
  • Output: Line Driver, Voltage Output
  • Emergency Stop Button: Yes
  • Enable Button: Yes
  • Product Detail

    Product Tags

    GE-A Series Sine/Cosine Output Signals Encoder

    High-precision Speed and Position Sensor with Sine/Cosine Output, Support online debug function

    Application:

     GE-A-Series-Gear-type-encoder-2

                    Spindle                       -  Motor                          CNC Machine                Speed measurement                Positioning   

    n Rotary position and speed sensing in CNC machines

    n Energy and power generation systems

    n Railway equipment

    n Elevators

    General Description

    The GE-A Gear Type Encoders are non-contact incremental encoders for rotary speed and position measurement. Based on Gertech’s unique Tunneling Magnetoresistance (TMR) sensor technology, they provide orthogonal differential sin/cos signals with high quality, along with an index signal and their inverse signals. The GE-A series are designed for 0.3~1.0-module gears with different teeth numbers.

    Features

    Output signal amplitude in 1Vpp with high quality

    High frequency response up to 1MHz

    Operating temperature range from -40°C to 100°C

    IP68 protection grade

     Advantages

    n Fully sealed housing with metal case to ensure the highest protection level

    n Non-contact measurement, abrasion and vibration free, can work in harsh environments such as water, oil or dust

    n Weak magnetic induction prevents the gear from being magnetized, and the surface of the encoder is not easy to adsorb iron filings

    n Large tolerance to air-gap and installation position with high-sensitivity TMR sensors

    n Both convex and concave type are allowed for the index teeth 

    Electrical Parameters

    SYMBOL

    PARAMETER NAME

    VALUE 

    NOTE

    Vcc

    Supply Voltage

    5±10%V

    DC

    Lout

    Output Current

    ≤20mA

    No Load

    Vout

    Output Signal

    sin/cos (1Vpp±10%)

     

    Fin

    Input Frequency

    ≤1M Hz

     

    Fout

    Output Frequency

    ≤1M Hz

     

     

    Phase

    90°±5%

     

     

    Calibration Method

    Manual

     

     

    Insulation Resistance

    10MΩ

    DC500V

     

    Withstand Voltage

    AC500 V

    1 Min

     

    EMC Group Pulse

    4000 V

     

    Mechanical Parameters

    SYMBOL

    PARAMETER NAME

    VALUE 

    NOTE

    D

    Distance between Mounting Holes

    27mm

    Using two M4 screws

    Gap

    Mounting Air-gap

    0.2/0.3/0.5mm

    Corresponding to 0.4/0.5/0.8-

    module respectively

    Tol

    Mounting Tolerance

    ±0.05mm

     

    To

    Operating Temperature

    -40~100°C

     

    Ts

    Storage Temperature

    -40~100°C

     

    P

    Protection Grade

    IP68

    Zinc alloy housing, Fully potted

    Recommended Gear Parameters 

    SYMBOL

    PARAMETER NAME

    VALUE 

    NOTE

    M

    Gear Module

    0.3~1.0mm

     

    Z

    Number of Teeth

    no limit

      

    δ

    Width

    Min.10mm

    Recommend 12mm

     

    Material

    ferromagnetic steel

    Recommend 45#steel

     

    Index Tooth Shape

    convex /concave tooth

    Recommend concave tooth

     

    Tooth Width Ratio between Two Layers

    1:1

    Width of the index tooth is 6mm

     

    Gear Accuracy

    above level ISO8

    Corresponding to level JIS4

    Calculation method of gear parameters: 

    GE-A-Series-Gear-type-encoder-11

    Output Signals

    The encoder’s output signals are differential sine/cosine signals with 1Vpp amplitude along with the index signal. There are six output terminals including A+/A-/B+/B-/Z+/Z-. A/B signals are two orthogonal differential sine/cosine signals, and the Z signal is the index signal.

     

    The following chart is the measured A/B/Z differential X-T signals.

    GE-A-Series-Gear-type-encoder-13

    The following chart is the Lissajous-Figure of the measured X-Y signals.

    GE-A-Series-Gear-type-encoder-14

    Gear Module

    The GE-A product series is designed for gears with 0.3~1.0-module, and the number of teeth may vary.

    The following table shows the recommended mounting air-gap under 0.4/0.5/0.8-module.

    Gear Module

    Mounting Air-gap

    Mounting Tolerance

    0.4

    0.2mm

    ±0.05mm

    0.5

    0.3mm

    ±0.05mm

    0.8

    0.5mm

    ±0.05mm

    Number of Teeth

    The encoder should match gears with proper number of teeth for optimal results. The recommended number of teeth is 128, 256, or 512. The minor difference in teeth number is acceptable without affecting the quality of the output signals.

    Installation Procedure

    The encoder features a compact design with the distance between two mounting holes at 27mm, making it compatible with most of the similar products on the market. The installation procedure is as follows.

    1. Mount the encoder using two M4 screws. The screws should not be firmly tightened yet to allow adjustment for the mounting air-gap.

    2. Insert a feeler gauge with desired thickness in the middle of the encoder and the gear. Move the encoder toward the gear until there is no space between the encoder, the feeler gauge and the gear, and the feeler can be removed smoothly without apply extra force.

    3. Firmly tighten the two M4 screws and pull out the feeler gauge.

    Due to the encoder’s built-in self-calibration capability, it will produce desired output signal as long as the proper mounting air-gap is ensured by the above procedure within tolerance.

    Cable

    Normal Version encoder cable consists of eight twisted-pair shielded wires. The cross section of the cable core is 0.14mm2, and the outer diameter is 5.0±0.2mm. The cable length is 1m、3m、5m by default. Enhanced Version encoder cable consists of ten twisted-pair shielded wires. The cross section of the cable core is 0.14mm2 , and the outer diameter is 5.0±0.2mm. The cable length is 1m、3m、5m by default. 

    Dimensions

    GE-A-Series-Gear-type-encoder-16

    Mounting Position

    GE-A-Series-Gear-type-encoder-18

    Order Code

    GE-A-Series-Gear-type-encoder-19

    1: Gear Type Encoder   

    2(Gear Module):04: 0:4-module  05:0:5-module  0X: 0:X module;  

    3(A:Sin/Cos signals Type): A:Sin/Cos signals; 

    4(Interpolation):1 (default);

    5(Index Shape): F:concave tooth  M:convex tooth; 

    6(Number of Teeth):128,256,512,XXX;

    7(Cable Length):1m(standard),3m,5m;

    8(Online Debug):1:support, 0: not support;

    The information provided herein is believed to be accurate and reliable. Publication neither conveys nor implies any license under patent or other industrial or intellectual property rights. Gertech reserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. Gertech does not assume any liability arising out of the application and use of its products. Gertecg’s customers using or selling this product for use in appliances, devices, or systems where malfunction can reasonably be expected to result in personal injury do so at their own risk and agree to fully indemnify Gertech for any damages resulting from such applications.


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