What Does The Accuracy of A Multi-turn Absolute Encoder Mean?

What does the accuracy of a multi-turn absolute encoder mean?

‌The accuracy of a multi-turn absolute encoder refers to the error and accuracy between the signal data output by the encoder and the actual data of the measured physical quantity. Accuracy is used to measure the value of the repeatable average deviation between the actual value and the set value under normal circumstances. For rotary encoders, it is generally defined as arc seconds or arc minutes.

The accuracy of a multi-turn absolute encoder is affected by many factors, including installation accuracy, shaft concentricity, etc. During installation, it is necessary to pay attention to the installation requirements to ensure the measurement accuracy of the encoder. Shaft concentricity is also an important factor affecting accuracy. The shaft concentricity of the equipment must be standardized to ensure the accuracy of the encoder measurement.

In addition, it is worth noting that high resolution does not mean high accuracy. For example, two rotary encoders with the same accuracy, one with a resolution of 3600 PPR and the other with a resolution of 10000 PPR, but this does not mean that the accuracy of the 10000 PPR encoder is necessarily higher than that of the 3600 PPR encoder.

In summary, the accuracy of a multi-turn absolute encoder is a comprehensive indicator, involving multiple aspects such as the design, installation, and use of the encoder.