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　　Rotary encoder looks simple, in fact, the internal integration of highly complex microelectronic technology, compact structure. In order to ensure the accuracy of the rotary encoder and service life, or Granville today for everyone to use electronic rotary encoder explain under what issues need attention?
　　The rotary encoder is used to measure rotational speed and with PWM technology can achieve fast speed control device having a simple, stable performance, high reliability, has been widely used in many fields. Users using a rotary encoder considerations, should pay attention to the following three aspects:
　　(1) rotary encoder installed Note:
　　Do not direct impact is applied to the shaft when installing rotary encoder. Connect the encoder shaft to the machine, use a flexible connector. When the shaft mounted connector, not pushed hard. Even with the connector, due to poor installation, it is possible to add than the allowable axle load bigger load, or cause dial core and, therefore, pay special attention to. Bearing life use conditions, the affected load bearing particularly large. The bearing load smaller than a predetermined load, can greatly extend bearing life. Do not disassemble the rotary encoder, to do so would undermine the anti-oil and anti-drip properties. Drip-proof product is not long-term immersion in water, oil, surface water, oil should be wiped clean.
　　(2) the impact of vibration on the rotary encoder:
　　Applied to the rotary encoder vibration, they tend to be the reason for error pulse occurs. We should therefore set the place, the installation site attention. The number of pulses per revolution occurred more space more narrow slot groove rotating disk, the more susceptible to vibration. In the low-speed rotation or stopped, it applied to the shaft or the rotating body vibration groove disc jitter, pulse error may occur.
　　(3) with respect to the rotary encoder wiring and connections Note:
　　Incorrect wiring may damage the internal circuit, it should give full attention to the wiring:
　　1. Ensure that all wiring in the power OFF state, when power is turned on, if the output power line contact, then sometimes damage to the output circuit.
　　2. If wiring errors, and sometimes damage to the internal circuit, it should give full attention to the polarity of the power supply wiring and the like.
　　3. If and power lines, power lines parallel wiring, it may sometimes cause malfunction by induction into the damage, so be separated further wiring.
　　4. Extension cords should be 10m or less. And due to the distribution capacity of the wire, the waveform rise and fall times will be longer, there is a problem with Schmitt circuit and so the waveform shaping.
　　5. In order to avoid induction noise, try to use the shortest distance wiring. When the input to the integrated circuit, in particular, need to pay attention.
　　6. wires extend, due to the impact between the conductor resistance and wiring capacitance, the waveform rise and fall times longer, prone to interference (crosstalk) between the signals, so a small application of resistance, low capacitance between the line wires (twisted pair , shielded wire). For HTL with symmetrical negative signal output from the encoder, the signal transmission distance up to 300 meters.
　　In short, in order to ensure the accuracy of rotary encoders and service life, we install, use of the environment, and should give full attention to the wiring connection. Guangdong Granville Electronics Co., Ltd. since 1991 began production of rotary encoders, full R & D experience if the rotary encoder procurement needs, please contact us.