Speed encoder

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

The tachometer encoder is generally connected to the shaft. The pulse quantity of the tachometer encoder is fixed. When the shaft rotates, the tachometer encoder will output pulses, and the PLC or counter will receive the pulses. The total amount of pulses received in the time is different, and the speed is shown here. According to the amount of pulses and the actual length of revolution, the real speed m/min can be calculated.

The speed measuring encoder consists of a photoelectric code disc with a shaft in the center, on which there are ring-shaped and dark engraved lines, which are read by photoelectric transmitting and receiving devices, and four groups of sine wave signals are combined into A, B, C, D, each A sine wave has a phase difference of 90 degrees (relative to a cycle of 360 degrees). The C and D signals are reversed and superimposed on the A and B phases to enhance the stable signal; in addition, a Z-phase pulse is output per revolution to represent Zero reference position. Since the phases A and B are different by 90 degrees, the encoder's forward and reverse rotation can be judged by comparing whether the A phase is the first or the B phase. The zero reference position of the encoder can be obtained through the zero pulse.

The materials of the speed encoder code disc are glass, metal, plastic. The glass code disc is made of thin scribe lines deposited on the glass, which has good thermal stability and high accuracy. The metal code disc is directly engraved with pass and impassability, and is not fragile. , But because the metal has a certain thickness, the accuracy is limited, and its thermal stability is an order of magnitude worse than that of glass. The plastic code disc is economical, and its cost is low, but the accuracy, thermal stability, and life are worse. some.

Resolution—The number of open or dark engraved lines provided by the tachometer encoder per 360 degrees of rotation is called resolution, also known as resolution indexing, or directly called the number of lines, generally 5 to 10,000 lines per revolution.

okplazas.com specializes in the production and sales of various speed encoders, can provide speed encoder selection, speed encoder quotation, speed encoder installation instructions, angle encoder repair and other services, welcome to consult!