Three parameters should be paid attention to in the selection of incremental 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 and use 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 tube output, C2 is PNP tube output), long wire Drive output. Its output mode should match the interface circuit of its control system.
Precautions for selection of absolute rotary encoder
(1) Mechanical part
①Length measurement or angle measurement, how to convert the length measurement by mechanical means (there are some introductions above, if you are not clear, please call to discuss). Is the measured angle within 360 degrees (single lap) or over 360 degrees (multiple laps). The production process is a rotation cycle work in one direction, or a cycle work in a back and forth direction.
②Shaft connection installation form, there is a shaft type connected by a flexible coupling, or a shaft sleeve type connection.
③Use environment: dust, moisture, vibration, impact.
(2) Electrical part
①What is the connected output receiving part?
②Signal form?
③Resolution requirements?
④Control requirements?