The choice of encoder must consider these!

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There are many models in the encoder model market. How to choose the correct encoder model so as not to waste money and energy by purchasing the wrong encoder? Soundwell Electronics summarizes the technical parameters that must be considered before selecting the encoder for your reference.

1. Encoder mechanical part

1. To measure length or angle

2. Shaft connection installation form

3. Use environment, dust, moisture, vibration, impact.

Second, the electrical part of the encoder

1. Connected output receiving part

2. Signal form

3. Resolution requirements

4. Control requirements

Three, absolute encoder selection

Absolute encoder: each position is absolutely unique, anti-interference, no need for power-down memory.

1. Resolution

Related to position accuracy

2. Appearance size

Related to the installation space

3. Allowable shaft load

Relationship with life and installation status

4. The maximum number of revolutions allowed (the highest response frequency)

The relationship between the number of revolutions of the drive shaft such as a motor and the resolution

5. Output phase difference

Matching condition with the control part for NC machinery, etc.

6. Adaptability to the environment

Relationship with the use environment

7. Selection of incremental OR absolute encoder

Considering the large cost, see whether the absolute value position can be detected when the power is turned off. There are mistaken data, anti-noise performance, etc.

4. Rotary encoder selection requirements:

When choosing the model of the rotary encoder, please pay attention to the following points:

1 Resolution: the relationship with position accuracy

2 Appearance size: relationship with installation space

3-axis allowable load: relationship with life and installation conditions

4 Allowable maximum speed: the relationship between the number of revolutions of the drive shaft such as a motor and the resolution

5 Output phase difference: match with the control part of CN machinery, etc.

6 Adaptability to the environment: the relationship with the use environment

7 Incremental type, absolute value type: Considering the cost, whether it is necessary to detect the absolute value position when the power is cut off, whether there is a counter, anti-noise performance, etc.