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The EN model of encoder from Bourns is a
self-contained, incremental, rotary optical device that produces a 2-bit quadrature signal output that is suitable for digital systems that require both magnitude and direction of adjustment data.
The device converts rotary input into digital output signals that can be used directly, without the need for analogue to digital conversion. The output signals are 90° phase shifted square waves that do not require the debounce circuitry that a mechanical type of device requires. The benefits of these features make it possible to reduce component count, circuit complexity, cost and also to increase oerformance and reliability.
Having a long life of 10,000,000 shaft revolutions and a compact, rugged body make this encoder suitable for use in extended service and limited space applications as a digital panel control or position sensing device.
- Two channel quadrature output
- Square wave signal
- Resolution 128 cycles per revolution
- CMOS and TTL compatible
- Long life
- Metal shaft and bushing
- IP40 rating
- Bourns type ENA1J-B28-L00128L
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| Electrical characteristics | | | | Output signal | 2-bit gray code with A leading B by 90° on clockwise rotation | | | Resolution | 128 cycles per revolution | | | Insulation resistance | 1000MΩ | | | Electrical travel | Continuous | | | Supply voltage | 5V DC ±0.25V | | | Supply current max. | 26mA | | | Output voltage (low) max. | 0.8V | | | Output voltage (high) min. | 4V | | | Output current (low) min. | 25mA | | | Rise/fall time | 200ns | | | Power consumption max. | 136mW | | | Pulse width each channel | 180° ±45° | | | Phase shift channel A to B | 90° ±45° | | | Mechanical/environmental characteristics | | | | Rotational life | 10,000,000 revolutions | | | Vibration | 5G | | | Shock | 50G | | | Terminals | Axial PC pins | | | Weight | 11g | | | Operating temperature range | –40°C to +75°C | | | Storage temperature range | –40°C to +85°C | | | Hardware | 1x lockwasher, 1x mounting nut | | |
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