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What problems should be paid attention to when using CANopen absolute encoder

2021-04-27 H:45:54
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What problems should be paid attention to when using CANopen absolute encoder? CANopen absolute encoder is a device that converts changes in mechanical angle physical quantities into electrical signals. Encoders are mainly used to measure the angular displacement, angular velocity and angular acceleration of rotating objects. The high-precision encoder can convert these physical quantities into electrical signals and output them to the control system or instrument, and the control system or instrument controls the drive device according to these quantities.


1. Electrical aspects


Please do not wrap the power cord around the output line of the high-precision encoder, and do not place it near the switchboard to prevent interference. Shielded cables should be used for wiring. The transmission distance of the pulse signal is related to the following factors: frequency, output circuit, input circuit, transmission line and transmission frequency.


Before installation and start-up, carefully check whether the product specifications are consistent with the encoder model and whether the wiring is correct. Incorrect wiring will damage the internal circuit. For long-distance transmission, the signal attenuation coefficient should be considered, and the output mode with low output impedance and strong anti-interference ability should be selected.


2. Mechanical aspects


The connection between the CANopen absolute encoder and the user's output shaft should adopt a flexible soft connection to reduce the damage to the encoder shaft system and code disc caused by the series motion and beating of the user shaft. When installing the encoder, do not knock it. Please pay attention to the allowable shaft load during installation and do not exceed the load.


The different speeds of the encoder shaft and the user output shaft should be guaranteed


Nmax=(high response frequency/L)×60 r/min (L is the number of grating pulses). When using it for a long time, please check whether the parts and fixing screws connected to the high-precision encoder are loose, which will not affect the use of the equipment.


3. Environmental aspects


Because the high-precision encoder is a precision instrument, do not splash water, oil, etc. , And there is no source of interference. Pay attention to whether the ambient temperature and humidity are within the required range of the instrument.


When using high-precision encoders in different industries, the precautions are different, and the operator must pay special attention.




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