Industrial Controls

GOS38A02 Incremental Rotary Encoder with Semi-Hollow Shaft & IP65

The GOS38A02 incremental rotary encoder is designed for precision motion control in industrial automation applications. Featuring a compact 38mm diameter and semi-hollow shaft, it delivers accurate position and speed feedback with resolutions up to 10,000 pulses per revolution.

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Description

The GOS38A02 incremental rotary encoder is designed for precision motion control in industrial automation applications. Featuring a compact 38mm diameter and semi-hollow shaft, it delivers accurate position and speed feedback with resolutions up to 10,000 pulses per revolution. Its robust IP65-rated construction guarantees reliable performance in harsh environments. Compatible with various PLCs and control systems, the GOS38A02 offers versatile output signals including open collector, push-pull, and line driver, ensuring seamless integration in conveyor, robotics, CNC, and packaging machines.

Key Features

  • Incremental optical rotary encoder with high-resolution options from 100 to 10,000 PPR

  • Semi-hollow shaft design (typically 8mm diameter) for direct motor installation and easy coupling

  • IP65-rated housing protects against dust and water ingress for industrial durability

  • Wide DC input voltage range from 5 to 24V for flexible system compatibility

  • Multiple output signal types: open collector (NPN), complementary push-pull, and 5V line driver differential signals

  • Anti-interference circuitry for stable, noise-resistant signal output

  • Compact 38mm outer diameter facilitating integration in tight mechanical assemblies

  • Long cable options with protective rubber sleeves available

Product Advantages

  • High-resolution measurement enabling precise speed and position control

  • Semi-hollow shaft supports easier installation and shaft alignment

  • Robust IP65 protection increases encoder longevity in tough environments

  • Versatile outputs support a wide range of industrial control applications

  • Enhanced signal noise immunity ensures consistent feedback in electrically noisy settings

  • Space-saving compact size suits applications with limited installation room

Product model and meaning

G 0 S 38 □ A 02 2000 C 3 2M
Category of

product

 Type of product Form of

main shaft

 Contour of

product

 Size of main  shaft,shaft hole Outlet and

sealing form

 Outline

structure

 Resolution Output form Output signal Cable
G:incremental

type

 0:megneto-  electricity S:solid shaft 38:φ38mm □:φ6mm A:side outlet rubber 02:2outline

structure2

 10,20,50,60,

100,200,360,

400,500,600,

800,1000,

1024,1200,

2000,2048,

2500,3000,

3600,5000

 C:open collector output

F:complementary output

T:push pull output

L:5V drive output

A:24V drive output

 1:phase Asignal

2:phase AB signal

3:phase ABZ signal

4:phase ABA/B/ signal

5:phase ABZA/B/Z/ signal

 Default

2m

line,For

non 2m,

labeling is

sufficient

Wiring table

Line color C/F output signal – Line color Loutput signal
brown VCC brown VCC
blue GND
blue GND
black A phase
black A phase white B phase
orange Z phase
white B phase
black red Aphase
orange Z phase white red Bphase
orange red Z phase
shield F ·G
shield F ·G

Output phase difference

complementary output/NPN collector open circuitoutput/push pull output1 (2)

long line drive output

1 (3)

Mechanical drawings(mm)

1 (1)

Application Scenarios

  • Industrial motor speed and position measurement for automation

  • CNC machinery for precision tool positioning and rotation feedback

  • Conveyor belt speed and position control in packaging lines

  • Robotics requiring accurate joint and axis feedback

  • Printing machines for synchronizing roller and sheet movements

  • Automated assembly lines demanding high reliability rotary feedback

Installation & Maintenance

  1. Verify shaft diameter and match with the semi-hollow 8mm encoder shaft for secure fitting.

  2. Align shafts carefully to prevent mechanical stress and ensure accurate feedback. Flexible coupling is recommended.

  3. Secure the encoder firmly with mounting screws to prevent vibrations or rotational movement.

  4. Connect the power supply between 5 to 24V DC, and wire output signals according to required interface (refer to wiring diagrams).

  5. Use shielded, twisted-pair cables wherever possible to minimize electromagnetic interference.

  6. Keep the encoder housing clean and free of dust buildup.

  7. Periodically inspect electrical connections for tightness and signs of wear.

  8. Replace the encoder promptly if signal integrity degrades or mechanical damage occurs.

FAQ

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