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Resolution considerations when purchasing incremental encoders!

Changchun Rongde Optics Co.,Ltd.   Release time:2018-12-26   Browse:670

Encoders need to consider many aspects when purchasing. When choosing the resolution of incremental encoders, you need to consider the following:

1. Considering the selected single-turn pulse number ppr and the maximum speed of the motor drive encoder (Changchun encoder), calculate the working frequency to ensure that it does not cause the pulse output frequency to exceed the encoder pulse output frequency at the maximum speed. And the input frequency of the controller.

Second, the number of single-turn pulses should be selected as much as possible for the precision control you need. This can reduce the zoom ratio, such as 12m measurement range. The measurement display only needs 1m/step (low resolution), you can choose 12ppr, if you need to display 0.01m /step (high resolution) should choose 1200ppr or above encoder. If you choose a 600ppr encoder (Changchun encoder) to measure the accuracy of 0.01m / step, you need to scale the conversion, down 0.02m / step to 0.01m / step.

Third, please note that the controller you are using may have a 2x or 4x multiplier function. According to the above example, the measurement accuracy of 0.01m/step, select 600ppr and perform 2x or 300ppr for 4x. The same effect.



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