The encoder shaft radial load is present in each encoder series; the voltage attenuation is relatively large in long-distance transmission, not only the current input to the encoder is attenuated, but also the high-level signal is reduced, and the low-level signal is reduced. The level signal increases, and the result of the encoder is that the signal exceeds the limit requirements of the receiving device, indicating that the signal is being lost.
The communication cable between the encoder and the meter must be laid far from the high-voltage line and follow the principle of the shortest and most direct wiring. Encoder All encoders are equipped with load bearings.
The bearing life depends on the load on the encoder shaft. Reducing the load on the encoder shaft can ensure the life of the encoder. In any case, it must be ensured that the shaft radial load of the encoder does not exceed the nominal range nicht exceeds.
Encoder mechanical aspects: Because the encoder is a high-precision electromechanical integration device, it is necessary to avoid elastic, soft connection between the encoder shaft and the user-end output shaft By pulling and If the shaft jumps, the shaft of the encoder and the code disk will be damaged. Pay attention to the allowable shaft load when installing.
It should be noted that the shaft of the encoder is different from the shaft of the user's output shaft accuracy <0.20mm and deviation angle from the axis <1.5°; Knocking and tapping are strictly forbidden during installation, so as not to damage the shaft and code disk;
< br/> If the encoder is used for a long time, check it regularly. Whether the screws of the fixed encoder are loose (once a quarter); the rotary encoder consists mainlyh composed of grating, light source, detector, signal conversion circuit and mechanical gear and other parts.
Equally spaced radial translucent slits are engraved on the grating surface, and the distance between two adjacent translucent slits represents an incremental period; .
Since the two grating faces are 90° out of phase, the output can be fed into a digital addition and subtraction calculator and the angle expressed as a division value.
The encoder consists of a circular grid and an indicator grid that form a pair of scanning systems. A beam of infrared light is projected onto one side of the scanning system and the light-sensitive device The other side of the scanning system can receive it. When the circular grating rotates, the scanning light signal received by the photosensitive device changes, and the photosensitive device can read the light signal intoconvert an electrical signal and output it to the control system or instrument.
The encoder is mainly composed of a code disk (circular grating, display grating), a housing, a light-emitting device, a light-sensitive device and other components.
The encoder's circular grid consists of radial light and dark stripes painted on transparent materials or carved on metal materials. The spacing of an adjacent strip is called a grating section, and the number of grating sections in the total perimeter of the grating is the number of pulses (resolution) of the encoder.
Indicates that the grid is a solid part, but the window strips and circular grid strips are exactly the same.
The encoder body is the support for assembling the circular grid, display grid and other components. seemThe device is generally an infrared light ecentering tube. The photosensitive device is a high-frequency photosensitive element; in general there are silicon photocells and phototransistors.