Some common faults of the encoder

by:HENGXIANG     2020-11-07
Rotary encoder has been widely used in many industries, and so on the rotary encoder in use process will produce what fault? Electronic today for the following 7 kinds of rotary encoder failure analysis and inform you solution. 1, the encoder itself fault: refers to the encoder itself components failure, it does not produce and output waveform right. This case need to replace encoder or the internal devices maintenance. 2, the encoder connection cable fault: the highest rates of failure occurs, often encountered in maintenance, should be a priority consideration. Usually the encoder cable open circuit and short circuit or poor contact, the need to change cable or connector. Also should pay special attention to whether it is due to cable fixed tightly, not caused by loose open welding or open circuit, then lock cable. 3, encoder + 5 v power down: refers to the + 5 v power supply is too low, usually cannot be less than 4. 75 v, is the cause of low power supply failure or power transmission cable resistance caused by the big loss, then need to repair the power supply or replace the cable. 4, absolute rotary encoder battery voltage drop: this kind of failure usually have clear alarm, and then need to replace the battery, if the reference point position memory loss, still must perform to return to the reference point operations. 5 don't answer, encoder cable shielding wire or fall off, it will introduce the jamming signal, the waveform is not stable, affect the accuracy of the communication, must ensure that the shielding wire reliable welding and grounded. 6, loose encoder installation: this kind of failure will affect the position control accuracy, stop and moving position deviation value super bad, or even just a boot servo system overload alarm is generated, please pay special attention to. 7, raster pollution makes the amplitude of the output signal, must use absorbent cotton to gently wipe grease anhydrous alcohol. In short, in use process such as a problem, we should first check and see what is the rotary encoder failure to select the corresponding solution to the rotary encoder failure.
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