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　　Rotary encoder Selection of parameters which aspects should be informed of it? Electronic liter respectively today to explain to incremental rotary encoder Selection of parameters with absolute rotary encoder Selection of parameters, we want to work to help.
　　Incremental rotary encoder Selection of parameters and incremental rotary encoder Selection Considerations
　　The following parameters should be concerned about three aspects:
　　1. Mechanical installation dimensions, including positioning spigot, shaft, mounting holes; cable and outlet; installation space volume; environment protection level meets the requirements.
　　2. Resolution, the number of output pulses per turn of the encoder for work, whether to meet the design requirements for the use of precision.
　　3. The electrical interface, the encoder output common push-pull output (F-type HTL format), output voltage (E), open collector (C, C is the common type NPN output tube, C2 PNP type tube output), long drive output. Its output should and its control system interface circuit to match.
　　Absolute rotary encoder Selection of parameters and absolute rotary encoders Selection Considerations
　　We should pay attention to the following part of the mechanical and electrical parameters:
　　1. Mechanical parts:
　　① measuring length or angle measurement, how to measure the length of the conversion by mechanical means. Measured angle is 360 degrees (lap), or may be over 360 degrees (multi-turn). Production process is a rotation cycle work, or back and forth direction of the cycle work.
　　② shaft installation form, connected by a flexible shaft coupling type, or sleeve-type connector.

　　③ use of the environment: dust, moisture, vibration, shock?
　　2. Electrical part
　　① output receiving moiety
 　② signal form
  ③ resolution requirements
  ④ control requirements
  Notes on selection parameters and absolute rotary encoders and incremental rotary encoders concern is different, if in doubt, please rise and Electronic Discussion, Guangdong Granville Electronics Co., Ltd. specializing in R & D rotary encoder 25 , it is a rotary encoder suppliers, willing and we explore rotary encoders technical knowledge.