Encoder is a kind of sophisticated electronic components, are widely used in various fields, can be used to measure speed, Angle, distance, displacement, and use in our process, sometimes the encoder will happen some faults, presently summarizes some electronic encoder failure reason and solution, for your reference!
After the screening, concluded that the causes of the third phase of loading machine encoder failure is improper Devicenet communications interference and configuration;
Many cause DeviceNet system is not normal and needs to be fixed Bus Off, the information display on the DNB as scanner, and the red light flashing network devices.
This is because each device has an error accumulation counter, this counter accumulation of CAN network error, information is sent in good condition at the same time, and cumulative number will reduce errors, if the error counter increases quickly in a short time, will think the network is not stable and close oneself, because of this, good equipment also follow to shut down.
Usually are: the causes of Bus Off equipment wrong baud rate.
Junk data from defective equipment.
Is there a problem under the electricity or electrical equipment cause CAN mistake.
Resistor is too big or too small.
The power rise time is too slow.
Network cable near the high tension line.
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 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.
Shanghai electronic products is 27 years old, encoder manufacturers, specializing in the production of various types of rotary encoder,.
Electronic research and development production of magnetoelectric encoder, according to the needs of customers make incremental encoder or absolute encoder.
Price higher than that of photoelectric encoder, magnetoelectric encoder is widely used in robot, automatic production lines, automatic assembly machine, elevator, textile machinery, sewing machinery, packaging and printing machinery, CNC machine tools, mapper and Angle measuring instrument, etc.
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