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Multi turn absolute encoder. The encoder manufacturer uses the principle of clock gear mechanism. When the central code plate rotates, another group of code plates (or multiple sets of gears, multiple groups of code disks) are driven through the gear, and the number of turns is added on the basis of single cycle coding to expand the measurement range of the encoder. Such an absolute encoder is called a multi turn absolute encoder, which is also determined by the mechanical position, Each...
"The encoder is generally divided into incremental encoder and absolute value encoder. The output mode of incremental encoder includes RS422, push-pull HTL, push-pull and NPN collector open circuit output; the output code system of absolute value encoder is generally binary code, also has gray code, and the output logic includes positive logic, negative logic and SSI.
Classification by encoder mechanical installation form(1) Shaft type: shaft type can be divided into clamping flange type, synchronous flange type and servo installation type.(2) Shaft sleeve type: shaft sleeve type can be divided into half empty type, full empty type and large diameter type.
According to the working principle, encoders can be divided into incremental and absolute types. Incremental encoder converts displacement into periodic electrical signal, and then converts this electrical signal into counting pulse, and the displacement is expressed by the number of pulses. Each position of the absolute encoder corresponds to a certain digital code, so its indication value is only related to the starting and ending positions of measurement, and has nothing to do with the...
At present, the encoder used in elevator is mainly incremental encoder, which is used together with frequency converter or other speed control system to provide speed and position information for speed control system or control system. Generally, frequency divider is added for pulse equivalent conversion. Encoder installation is mainly coaxial connection with traction motor to measure speed and feedback of motor. Now the door motor of frequency conversion door system is also equipped with...
An encoder is a device that compiles signals (such as bit streams) or data and converts them into signal forms that can be used for communication, transmission and storage.Encoder converts angular displacement or linear displacement into electrical signals, the former is called code wheel and the latter is called code scale.
The main performance requirements of encoder are: high precision, high sensitivity, reliable work, good stability, strong anti-interference ability, good dynamic characteristics, simple structure and low cost. The main items to be checked include: appearance; starting moment of main shaft; allowable speed; allowable axle load (axial and radial); inertia moment; vibration resistance; shock resistance; high temperature resistance; anti-interference ability; power voltage adaptability; current...
When the elevator is debugged, it runs from the lowest floor to the highest floor at a low speed, and the pulse number of each floor height is put into the control system. When the motor rotates, the encoder can get the output pulse which is directly proportional to the elevator running distance. The encoder will send the pulse to the frequency converter or other governors for operation and adjustment, and the elevator can slow down and select the floor. Among them, the pulse number of...
The absolute encoder outputs multi-bit digital code (gray code or pure binary code), and the parallel output means that there are many high and low level outputs on the interface to represent digital 1 or 0. For the absolute encoder with low number of bits, the digital code is generally output directly in this form, which can directly enter the I/O interface of PLC or upper computer, with immediate output and simple connection.
The encoder corrects the reference position into the memory position of the counting device every time it passes the reference point. Before the reference point, the accuracy of the position cannot be guaranteed. For this reason, in industrial control, there are methods such as finding the reference point first, turning on the machine and changing it.
In practice, the faults caused by rotary encoder are not a few, and it is quite troublesome to check. Sometimes, although it has been checked, it is still not reassuring. Therefore, I would like to introduce a simple method to confirm the rotary coding fault. From the schematic diagram of the drive and regulation system, it can be clearly seen that it is because of the rotary coding that the microcomputer inverter motor is between. If there is a problem with the rotary encoder, the abnormal...
An encoder is a device that compiles signals (such as bit streams) or data and converts them into signal forms that can be used for communication, transmission and storage.Encoder converts angular displacement or linear displacement into electrical signals, the former is called code wheel and the latter is called code scale.
Absolute encoder is relatively inaccurate in measuring small angle, but there is no cumulative error in large angle measurement.
Rotate the single-turn absolute encoder to measure each scribe line of the optical code disc during rotation, so as to obtain the unique code. When the rotation exceeds 360 degrees, the code returns to the original point, which is inconsistent with the unique principle of absolute code. Such encoder can only be used for measurement within the rotation range of 360 degrees, which is called single-turn absolute encoder. If the measurement rotation exceeds 360 degrees, a multi-turn absolute...
The absolute encoder outputs multi-bit digital code (gray code or pure binary code), and the parallel output means that there are many high and low level outputs on the interface to represent digital 1 or 0. For the absolute encoder with low number of bits, the digital code is generally output directly in this form, which can directly enter the I/O interface of PLC or upper computer, with immediate output and simple connection.
It is a speed and displacement sensor which integrates optical electromechanical technology. When the rotating encoder shaft drives the grating disk to rotate, the light emitted by the light-emitting element is cut into intermittent light by the slit of the grating disc, and is received by the receiving element to generate the initial signal.
Rotating photoelectric encoder is a mature technology for measuring angle and length. Nowadays, using absolute encoder with high precision and large range greatly improves the measurement accuracy and reliability, and is economical and practical. At present, it is still the most choice for measuring length.
The incremental rotary encoder has the difference of resolution, which is measured by the number of pulses per turn, ranging from 6 to 5400 or higher, and the more pulses, the higher the resolution; This is one of the important basis for selection.
Rotating photoelectric encoder is a mature technology for measuring angle and length. Nowadays, using absolute encoder with high precision and large range greatly improves the measurement accuracy and reliability, and is economical and practical. At present, it is still the most choice for measuring length.
High quality Optical encoders linear Incremental encoder is commonly used, and absolute encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the...
Model NO.: N40 neodymium magnet Shape: Block Grade: N40
Product Description SJ50 Absolute encoder 1) Advantages 1, Certification: CE& ISO9001 & SGS. 2, Feature: microminiature, logical compact configuration and easy to install. 3, Application: subminiature motor, small instrument, etc., for automation control 2) SJ50- Series Encoder Specification
Product Description SJ65 Absolute encoder 1) Advantages 1, Certification: CE& ISO9001 & SGS. 2, Feature: microminiature, logical compact configuration and easy to install. 3, Application: subminiature motor, small instrument, etc., for automation control 2) SJ65- Series Encoder Specification ...
Model NO.: linear encoder Working Principle: Incremental
Model NO.: linear encoder Working Principle: Incremental
Model NO.: N40 neodymium magnet Shape: Block Grade: N40
Product Description SJ50 Absolute encoder 1) Advantages 1, Certification: CE& ISO9001 & SGS. 2, Feature: microminiature, logical compact configuration and easy to install. 3, Application: subminiature motor, small instrument, etc., for automation control 2) SJ50- Series Encoder Specification
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Ms. carol Dong
Tel:86-431-85543703
Fax:86-431---88634119
Mobile Phone:+8613894866263
Email:sales@encoders.com.cn
Address:333Feiyue Donglu, Changchun City, Jilin Province. China, Changchun, Jilin
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