The reliability of absolute encoder！

The reliability of absolute encoder

1. IP rating refers to the encoder used outdoors, dust and water protection class, a lot of carts used directly in outdoor open air, the encoder needs to have this protection (IP level is detected by a specialized organ of authority, given certification report ) generally requires the encoder housing is IP67, IP65 shaft is more than (direct rain, but not a long time soaking).

2. Anti-vibration level, the same certification authority given special test report, carts for walking, bigger shock, this indicator is also very important, the general requirements in 10G (acceleration) or more, some of the best in the field 20G. Impact resistance, resistance to short transient shocks, 100G.

3. Temperature class, refer to the operating temperature of the encoder, since the carts may have possible applications in different places, the temperature level generally require the use of minus 25 degrees to 70 degrees, and some wider requirement.

4. Electromagnetic compatibility (EMC), refers to the encoder electrical immunity (surge voltage, static electricity, high-voltage pulse, etc.) without damaging the signal is still reliable requirements for carts, large motors, variable frequency, the signal line may walk with power lines this indicator is very important to choose the encoder, according to international standards, EMC should be level 2 or more.

5. Encoder supply polarity protection, carts correction encoder to a receiving device cable is long, the equivalent of a "sense antenna" for the surrounding electromagnetic induction, may be positive, it could be reversed, this encoder has protection, it will not be damaged.

6. Others, such as the signal transmission distance, signal anti-surge and so on.

These contents can not be just used in both reflected, but after use, will gradually than the level of the encoder.

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