Brief introduction of Eltra encoder

The Italian company Eltra was established in 1985, specializing in the development and production of sensors. Eltra has more than 20 years of production and sales experience in the field of production sensor technology, especially in the encoder industry. At present, it can produce more than 15,000 types of sensors and serve more than 3,000 customers worldwide.

The complete product range is the biggest feature of Eltra. It includes conventional products, incremental encoders, absolute encoders; special products, pull-wire and magnetic encoders, absolute bus systems, metric measuring wheels, electronic handwheels, intrinsically safe explosion-proof Type encoder; also includes photoelectric and inductive proximity switches, magnetostrictive sensors, linear potentiometers and related accessories.

The Italian Eltra rotary encoder is the most important, largest, and most complete encoder in Europe. Its products include absolute single-turn and absolute multi-turn encoders, incremental type, and belt for servo motors. Encoders with commutation phase signals, encoders for racks, metric measuring wheels, line drive encoders, electronic handwheels, intrinsically safe explosion-proof encoders, absolute single-turn encoders with incremental output, Absolute encoder for conversion and absolute encoder with industrial fieldbus interface.

　　Eltra encoders have been tested for a long time under strict conditions, and the product quality can be strictly guaranteed. At the same time, Eltra's unique production management system ensures the fastest delivery time. Since entering the Chinese market, Eltra encoders have been widely used in motors, printing and packaging machinery, machine tools, metallurgy, textile machinery, elevators, and chemicals.

The working principle of Italian ELTRA torsion encoder: Italian ELTRA encoders are generally divided into incremental type and absolute type, and they have the biggest difference: in the environment of incremental encoder, it is marked from the zero position. The flag is determined by the number of pulses calculated at the beginning, while the absolute encoder is determined by the reading of the output code. In a circle, the reading of each output code is unique; therefore, when the power is disconnected, the absolute encoder does not break up with reality. If the power is turned on again, the reading is still current. Unlike incremental encoders, which are invalid, it is necessary to look for the zero mark.

　　ELTRA encoder is a device that compiles and converts signals or data into signal forms that can be used for communication, transmission and storage. The encoder converts angular displacement or linear displacement into electrical signals. The former is called a code wheel and the latter is called a code ruler. Encoders can be divided into contact type and non-contact type according to the reading mode; encoders can be divided into two types: incremental and absolute according to the working principle. The incremental encoder converts the displacement into a periodic electric signal, and then converts this electric signal into a counting pulse, and the number of pulses is used to indicate the magnitude of the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication is only related to the start and end positions of the measurement, and has nothing to do with the middle process of the measurement.

　　 Eltra encoder mechanical installation and use of absolute rotary encoder: The mechanical installation of absolute rotary encoder has high-speed end installation, low-speed end installation, auxiliary mechanical device installation and other forms. High-speed end installation: Installed on the shaft end of the power motor (or gear connection). The advantage of this method is high resolution. Since the multi-turn encoder has 4096 turns, the number of motor turns is within this range, which can be increased by fully using the full range Resolution, the disadvantage is that after the moving object passes through the reduction gear, there is a gear gap error in the back and forth. It is generally used for one-way high-precision control and positioning, such as roll gap control in steel rolling. In addition, the encoder is directly installed on the high-speed end, and the motor jitter must be small, otherwise the encoder is easily damaged. Installation at the low speed end: installed after the reduction gear, such as the shaft end of the winding wire rope drum or the shaft end of the last reduction gear, this method has no gear back and forth clearance, the measurement is more direct, and the accuracy is higher. This method generally measures the length Distance positioning, such as various lifting equipment, feeding trolley positioning, etc. Both are generally used in the detection elements of speed control or position control systems. A rotary encoder is a device used to measure the speed of rotation. It is divided into two types: single output and dual output. Technical parameters mainly include the number of pulses per revolution (several to several thousand), and power supply voltage. Single output means that the output of the rotary encoder is a set of pulses, while the dual output rotary encoder outputs two sets of pulses with a phase difference of 90 degrees. The two sets of pulses can not only measure the speed, but also determine the direction of rotation. The difference between incremental encoder and absolute encoder Encoders are divided into signal principle, there are incremental encoders, absolute encoders.