The Bourns Model EM14 is a self-contained rotary optical encoder. It produces a 2-bit incremental quadrature signal, which is suitable for digital systems where both magnitude and direction of adjustment must be provided (up to 64 PPR).
This 14 mm encoder is ideal for use as a digital panel control in human-to-machine interface (HMI) applications where long rotational life, reliability, and small package size are essential. The EM14 Series converts rotary input into electrical signals, which can be used by microprocessors without A/D conversion.
Bourns' encoder output signals are square wave digital pulses, which do not require additional external debounce circuitry. Both features make it possible to significantly reduce the memory overhead, wiring and interconnects required by other types of control devices.
EM14 optical encoders offer a useful rotational life of 1 million cycles (100 000 cycles with detent), making them ideal for extended service applications. The 14 mm square package is compact and the splash-proof shaft seal makes this device suitable for applications where occasional moisture may be encountered. The addition of detents gives the device the ergonomic feel of a standard contacting encoder but with the reliability and long life of a non-contacting encoder. The optional momentary push switch can be used as a menu select function or an 'on/off' function. For easy mounting, it comes standard with a front panel mount bushing and hardware. It is also a 'lead free' product.
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