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    Incremental Rotary Encoder, Shaft, 400 ppr

    Low cost rotary encoder adopts stainless steel shaft, high resolution, high quality, several output modes to choose, manufacturer direct sale.
    SKU: ATO-IRE-400PS
    Free Shipping Worldwide
    Delivery date: 6-20 days

    Incremental optical rotary encoders with 400 ppr can be used for robots, workbenches, injection molding machines, electronic equipment, printing and packaging machinery, non-standard equipment and CNC machine, a variety of office automation systems, industrial automation control and measurement fields.


    • Incremental rotary encoder internal adopts ASIC devices
    • High reliability, long life
    • Anti-jamming performance
    • Small size, light weight, compact structure
    • Easy installation


    Basics Model ATO-IRE400PS
    Weight 100 g
    Wiring Color White Black Red Green Yellow Brown Gray Orange Shielded wire
    Signal Vcc 0V A B Z A- B- Z- GND
    Mechanical properties Maximum speed per minute (r/min) 5000
    Starting torque 1.5*10-3Nm (25℃)
    Maximum load Radial load: 20N, axial load: 10N
    Shock resistance 980m/s2
    Anti-vibration 50m/s2 (10~200Hz)
    Rotational inertia 4X10-8kgm2
    Operating temperature -30~85℃
    Storage temperature -35~95℃
    Protection Level IP54
    Electrical characteristics Output circuit Open-collector output Voltage output Push-pull output Line driver output
    Supply voltage Vcc DC 5V±0.2 DC 5~24V DC 5V±0.2 DC 5~24V DC 5V±0.2 DC 5~24V DC5V±0.2 DC 5~24V
    Current consumption ≤60mA ≤60mA ≤60mA ≤100mA
    Output high level ≥3.5V ≥Vcc-2.5V - - ≥2.5V ≥Vcc-2.5V
    Output low level ≤0.5V ≤0.5V - - ≤0.5V ≤1.0V
    Rise time Tr ≤500ns ≤1500ns - - ≤200ns ≤500ns
    Fall time Tf ≤100ns ≤300ns - - ≤200ns ≤200ns
    Maximum frequency response 0~100kHz 0~100kHz 0~100kHz 0~100kHz 0~100kHz 0~100kHz

    Tips: How to use a incremental encoder?

    1. Incremental rotary encoders have difference on resolution, the number can be from 6 to 5400 or higher, then the larger number of pulse, the higher the resolution. This is one of important basis for selection.
    2. Incremental encoder usually has three signal outputs: A, B and Z, generally adopt TTL level, A pulse is in the front while B pulse is after it. There is 90° of skewing between A pulse and B pulse, each circle issue a Z pulse, which can be used as a reference mechanical zero. We usually detect direction by judging whether A ahead of B, or B ahead of A, but the specific situation depends on the product description.
    3. Using PLC to collect data, we can choose high-speed counting module; when using IPC to collect data, we can choose high-speed counting board; when using SCM to collect data, we can choose the input port of optical coupler.
    4. It is recommended to use B pulse as forward pulse, A pulse as reverse pulse and Z as original point zero pulse.
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