Changchun Rongde Optics Co.,Ltd.

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  • Changchun Rongde Optics
  • Co.,Ltd.
  • Add:No.1666 Yaan Road,
  • North Lake Development District,
  • Changchun 130102,China
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What are the considerations when selecting incremental rotary encoder? !

Changchun Rongde Optics Co.,Ltd.   Release time:2016/6/21   Browse:673

Q: What are the considerations when selecting incremental rotary encoder? It should be noted parameters in three areas:

1.
Mechanical dimensions, including positioning spigot, shaft, mounting holes; cable and outlet; installation space volume; work environment protection level meets the requirements.

2. Resolution, ie when the number of encoder output pulses per turn, whether to meet the design requirements for the use of precision. 3. Electrical interface, the encoder output common push-pull output (F-type HTL format), the voltage output (E), open collector (C, common C for the NPN-tube output, C2 PNP type tube output), line driver output.
Its output should and its control system interface circuit to match.

Q: how to use an incremental encoder?

1, incremental rotary encoder has a resolution of differences, using the number of pulses per revolution generated to measure the number from 6-5400 higher, the number of pulses or more, the higher the resolution; this is an important basis for selection
one.

2, incremental encoders usually have three-way signal outputs (differential six signals): A, B and Z, the general use of TTL level, A pulse front, B pulse after, A, B pulse phase difference of 90 degrees, each circle Z sends a pulse to be referred to the mechanical zero position. A general use leads B or B leads A to be sentenced, I incremental encoder is defined as the encoder shaft clockwise to look forward, ahead of A and B is 90 °, counterclockwise rotation and vice versa for the reverse B ahead A is 90 °.
There are not the same, depending on the product description.

3, the use of PLC data collection, the choice of high-speed counting module; use the IPC data acquisition, high-speed counting cards can be used; the use of SCM data acquisition, we recommend the use of optical input port coupler.

4, it is recommended to do B burst forward (forward) pulse, A pulse to do the reverse (backward) pulse, Z datum zero pulse. 5, the establishment of a stack count in the electronic device.


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