Fanuc A290-0561-V562 Pulse Encoder 12500P

　　Product Introduction:
　　The Japan brand FANUC/Fanuc pulse encoder model is A290-0561-V562 and the new model is (A860-0310-T112), and the parameter is 12500P.
Fanuc A290-0561-V562/ (A860-0310-T112)

　　Brand: Fanuc/Fanuc
　　Origin: Japan
　　Model:A290-0561-V562/(A860-0310-T112)
　　Product Type: Pulse Encoder
　　Parameter: 12500P
　　Suitable for: FANUC servo series
　　Scope of use: Industrial automation
　　Customization: No
　　Classification and structure of pulse encoder: pulse encoder is divided into three types: photoelectric type, contact type and electromagnetic induction type. The accuracy and reliability of the photoelectric type are better than the other two, so only the photoelectric pulse encoder is used on the CNC machine. The structure of an optoelectronic pulse encoder is engraved with equally spaced lines around the circumference of a disc, which is divided into transparent and opaque parts, called circular gratings. The rotary grating rotates with the working axis. with a circular grating
　　In contrast, a fixed fan-shaped sheet, called an indicator grating, is placed in parallel with two slits (directional slits) that are 1/4 pitch apart. In addition, there is a zero slit (one pulse per revolution). The pulser is connected to the servo motor via a cross connector or key.
　　The working principle of the pulse encoder: when the rotary grating and the working axis rotate together, the light passes through the linear part of the two gratings, forming a light and dark stripe. The optoelectronic element receives these light and dark light signals and converts them into alternately converted electrical signals. The electrical signals are two sets of current signals A and B, which are similar to sine waves, as shown in Figure 4-17. The A and B signals are 90° out of phase and are amplified and shaped into square waves. The signal passing through the two gratings is also a "pulse per revolution", called the Z-phase pulse, which is also obtained by the above processing. The Z-pulse is used to generate the fiducial point of the machine. The subsequent pulses are sent to a counter, and the angle and speed of the working shaft can be measured based on the number and frequency of the pulses. Its resolution depends on the number of turns of the rotary grating and the subdivision multiplier of the measurement line.
　　Application of photoelectric pulse encoder: Photoelectric pulse encoder is used as a position detection device on CNC machine tools to feed back the detection signal to the CNC system. There are two ways for it to be fed back to the numerical control system: one is to adapt to the reversible counter with addition and subtraction counting requirements, and form the addition and counting pulse and the subtraction counting pulse; The second is to adapt to the counter with counting control and counting requirements, and form the direction control signal and counting pulse.
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Fanuc A290-0561-V562 Pulse Encoder 12500P

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