Optical mini-encoder NOE1 for compact applications

Feldkirchen, 19 July 2012 – Nanotec Electronic is introducing the NOE1, the first rotary encoder in a new product series of optical encoders. Due to its compact size, it is ideal for applications that require accurate positioning and use small stepper or BLDC motors.

In addition to the motor and a good controller, another component that is essential when accurate, high-resolution positioning is called for is the rotary encoder. Applications in medical engineering and other fields require small sizes. In response, drive specialist Nanotec developed the optical 3-channel encoder NOE1, a rotary encoder that fits small stepper and BLDC motors with its compact dimensions of just 20x26x10mm. Optical encoders take measurements using photodiodes that read off a code disk. The NOE1 has a resolution of 2000 pulses per revolution; quadrature increases the resolution to 8000 increments per revolution, which corresponds to 40 increments per 1.8° step in the case of a stepper motor. This makes it possible to measure the commutation angle in field-oriented control operation and enables operation with very good synchronization, even at slow speeds. The line driver for higher interference immunity is already integrated into the small housing.

For BLDC motors, the NOE1 is ideal when high-resolution positioning is required. For stepper motors, the NOE1, in conjunction with our closed loop controls (field-oriented control with sine commutation), opens up new fields of application in areas where precision positioning with high torque and low speed is required.

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Sigrid Scondo
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