The encoder role of Omron encoders

What PLC are you using? The high-speed port of each PLC is different, in addition, whether you use an external module or use a unit PLC, its connection is different, if you use the built-in high-speed port, the connection method is relatively simple, A phase is connected to X0, B phase is connected to X1, Z phase can not be connected, because Z phase is a weekly pulse phase, that is, the encoder rotates one week for a pulse, according to your needs, if you want to use, you can connect to any input port. Shanghai Barutu Construction Machinery Technology Co., Ltd. will answer for you.

A measuring element that converts the relative displacement between two planar windings into an electrical signal using the principle of electromagnetic induction, and is used in length measurement tools. Inductive synchronizers (commonly known as encoders and grating rulers) are divided into two types: linear and rotary. The former is composed of a fixed length and a sliding ruler, which is used for linear displacement measurement; The latter consists of a stator and a rotor and is used for angular displacement measurements.

In 1957, the United States Telip and others obtained a patent for inductive synchronizer in the United States, the original name was position measurement transformer, and inductive synchronizer was its trade name, which was initially used for the positioning and automatic tracking of radar antennas, missile guidance, etc. In machine building, inductive synchronizers are often used in positioning feedback systems for digitally controlled machine tools, machining centers, etc., and in measurement digital display systems for coordinate measuring machines, boring machines, etc. It has low requirements for environmental conditions and can work normally in an environment with a small amount of dust and oil mist.

The cycle of the continuous winding on the cut-length is 2 mm. There are two windings on the slide rule, the period of which is the same as on the fixed scale, but staggered from each other by 1 4 cycles (electric phase difference 90 °). There are two working modes of inductive synchronizer: phase and amplitude.

The former is to input two AC voltages U1 and U2 with a phase difference of 90° and the same frequency and amplitude into the two windings on the slide rule respectively, and according to the principle of electromagnetic induction, the windings on the scale will produce an induced electric potential U. If the slide ruler moves relative to the fixed ruler, the phase of u changes accordingly, and after magnification, it compares with U1 and U2, subdivides and counts, and the displacement of the slide ruler can be obtained. In the amplitude identification type, the input slide rule winding is the AC voltage with the same frequency and phase but different amplitudes, and the displacement of the slide rule can also be obtained according to the amplitude change of the input and output voltages.

The system composed of an inductive synchronizer and electronic parts such as amplification, shaping, phase comparison, subdivision, counting, and display is called an inductive synchronizer measurement system. It has a length measurement accuracy of 3 microns to 1000 mm and an angle measurement accuracy of 1 360°.

How an encoder works: It is a rotary sensor that converts rotational displacement into a series of digital pulse signals that can be used to control angular displacement and, if the encoder is combined with a gear bar or spiral screw, can also be used to measure linear displacement.

According to the working principle, encoders can be divided into two types: incremental and absolute. The incremental encoder converts the displacement into a periodic electrical signal, and then converts the electrical signal into a counting pulse, and the number of pulses indicates the size of the displacement. Each position of an absolute encoder corresponds to a defined digital code, so its indication is only relevant to the start and end positions of the measurement, and not to the intermediate process of the measurement.

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The wiring method of Omron encoder is as follows: brown wire to the positive pole of the power supply, blue wire to the negative pole of the power supply, black wire to the input, white wire to the input, orange wire to the input, and PLC COM to the negative pole of the power supply. Red wire to power positive, black wire to power negative, brown wire to input, orange wire input, yellow wire input, green wire input, blue wire input, purple wire input, gray wire input, white wire input, pink wire input, PLC com to power positive.

How to wire Omron encoders.

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The wiring method of Omron encoder is as follows: brown socks blind hidden wire to the positive pole of the power supply, blue wire to the negative pole of the power supply, black wire to the input, white wire to the input, orange wire to the input, PLC com to the power supply god grip negative. Red wire to power positive, black wire to power negative, brown wire to input, orange wire to input, yellow wire input, green wire input, blue wire input, purple wire to inform the hall in, gray wire input, white wire input, pink wire input, PLC com to power positive.

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When using the coupler installation, pay attention to the installation angle, avoid large eccentricity and declination angle, the encoder rotating shaft can not exceed the allowable range of the leakage belt during installation and use, if the rotating shaft force exceeds the range, the bearing life of the encoder will be reduced.

Pro, the wiring method of the Ohm Stuffy Dragon encoder may vary depending on the model and application, but generally have the following basic wiring methods:1VCC Supply Voltage:

Usually 5V or 12V, depending on the encoder model. Connect the VCC pin to the positive end of the power supply. 2.

GND Ground: Connect the GND pin to the negative or ground of the power supply. 3.

A signal output: output a phase pulse signal, usually a forward signal with the number of pulses. Connect the A-phase pin to the corresponding input port of the controller.

4.B signal output: outputs a pulse signal of phase b, usually the reverse signal of the number of pulses.

Connect the B-phase pin to the corresponding input port of the controller. Notes:1

Before wiring, it is important to understand the encoder's electrical characteristics and data sheet to ensure that it is wired correctly to avoid damaging the equipment or causing failure. 2.Attention should be paid to prevent static interference when wiring, and you can use an electrostatic bracelet or other anti-static tools for protection.

3.Before wiring, the power should be turned off to avoid electrical shock or other dangers of the spine pin. 4.

If you are not familiar with the wiring method of Omron encoders, it is recommended to seek the help of a professional.

How it works. By a photoelectric code disc with an axis in the center, there is a ring through and a dark engraved line on it, and a photoelectric transmitting and receiving device reads, and four groups of sine wave signals are obtained and combined into A, B, C, D, each sine wave is 90 degrees apart from the phase difference (360 degrees relative to a cycle), and the C and D signal numbers are reversed and superimposed on the two phases of A and B, which can enhance the stable signal; A z-phase pulse is also output per revolution to represent the zero reference bit.

Since the difference between phase A and phase B is 90 degrees, the forward and reverse rotation of the encoder can be determined by comparing phase A in front or phase B in front, and the zero reference bit of the encoder can be obtained through the zero pulse.

The material of the encoder code disc is glass, metal, plastic, the glass code disc is a thin engraved line deposited on the glass, its thermal stability is good, the precision is high, the metal code disc is directly through and not through the engraved line, not fragile, but because the metal has a certain thickness, the accuracy is limited, its thermal stability is an order of magnitude worse than that of glass, the plastic code disc is economical, its cost is low, but the accuracy, thermal stability, life are poor.

Resolution—The encoder is called resolution by how many through or dark lines are provided per 360 degrees of rotation, also known as the resolution index, or directly how many lines are weighed, generally at 5 10,000 lines per revolution.