How to select the rotary encoder？

Three parameters should be paid attention to in the selection of rotary encoder:

1. Mechanical installation dimensions, including positioning stop, shaft diameter, installation hole position; cable outlet method; installation space volume; whether the working environment protection level meets the requirements.

2. Resolution, that is, the number of pulses output per revolution when the encoder is working, and whether it meets the design accuracy requirements.

3. Electrical interface, encoder output methods commonly include push-pull output (F type HTL format), voltage output (E), open collector (C, common C is NPN type tube output, C2 is PNP type tube output), long-line driver output. Its output mode should match the interface circuit of its control system.