Encoder is tracking motor shaft rotation in industrial automation systems and robotics applications on the rise. These sensors and transmits the number of rotor shaft position and motion data, help to maximize the motor efficiency.

This is used to choose the best for all kinds of industrial motor rotor axis tracking a brief guide of the encoder.

To choose between absolute and incremental rotary encoder
Incremental encoder to track the position of the rotor axis relative to the reference point, and cheaper and easier to implement. Instead, absolute type track every possible rotor position, making it easy to get instant response. It is very suitable for safety critical encoder applications.

The best type of encoder heavy industrial applications
You can through the three main ways to realize induction motor rotor shaft:

Optical sensors - although these are very common, but they are not suitable for heavy duty industrial conditions, there are material such as grease or debris may affect the accuracy of the results. They are vulnerable to vibration or shock damage, and often take perfect alignment.
Magnetic encoder, the sensors without any eye disorders, but they consume a large amount of power and does not support high resolution.
Capacitive absolute encoder - in three types of sensors, the encoder is most suited to overload the environment. Their performance is not affected by debris, and is not affected by high temperature and vibration. Compared with the magnetic substitutes, their service life is longer, the generated data is more accurate.
The encoder integrated interface
After choosing the right type of encoder, you need to develop the most effective ways to integrate with the host system. Typical interface technology include:

Serial peripheral interface (SPI) - you can use this bidirectional interface to integrate the encoder to involve relatively short interconnection distance communication applications.
The RS - 485 - the interface is very suitable for significant electrical or electromagnetic interference (EMI) noise level of the industrial environment. Differ with SPI, the encoder interface of the application in relation to distance is longer than the interconnect cases do not need to reduce the data rate. If you are using a dedicated RS - 485 receiver, you can even realize data speeds up to 10 Mbps. You can also use this type of interface to connect more than one encoder to a bus.
Synchronous serial interface (SSI) - this is a cost-effective interface, suitable for encoder in monitoring rotor position and speed. In the simplex one-way communication system, a common clock signal to guide a transmitter and a receiver synchronization via messages from SSI. It supports the same as the SPI interconnection distance. As with SPI interface, SSI provides excellent noise tolerance.
Capacitive absolute encoder is highly reliable electrical and mechanical equipment, applicable to many heavy rotation axis tracking application.