German Kiepe encoder Kiepe model Kiepe price

Kiepe encoders feature an absolutely unique position for each point, are interference-resistant, and do not require power-off memory. They are increasingly widely used in angle and length measurement and positioning control in various industrial systems. Absolute rotary optical encoders, due to their absolutely unique position for each point, interference resistance, and lack of need for power-off memory, are increasingly widely used in angle and length measurement and positioning control in various industrial systems. The optical code disk of an absolute encoder has many tracks of lines, with each track arranged sequentially as 2 line, 4 lines, 8 lines, 16 lines..., so that at each position of the encoder, by reading the light and dark states of each track, a unique 2-ary code (Gray code) is obtained, ranging from the zeroth power of 2 to the n-1th power of 2. This is called a n-bit absolute encoder. Such encoders are determined by the mechanical position of the code disk and are unaffected by power outages or interference. The uniqueness of each position determined by the mechanical position of the absolute encoder means it requires no memory, no reference point search, and no continuous counting; the position is read whenever needed. This significantly improves the encoder's interference resistance and data reliability. Since absolute encoders are clearly superior to incremental encoders in positioning, they are increasingly used in industrial control positioning. Due to their high precision and large number of output bits, if parallel output is still used for absolute encoders, every bit of the output signal must ensure good connection, and isolation is required for complex operating conditions. The large number of cable cores brings much inconvenience and reduces reliability. Therefore, for multi-bit output types, absolute encoders generally use serial or bus-type output. The most common serial output for German-produced absolute encoders is SSI (Synchronous Serial Interface). For single-turn absolute rotary encoders, the unique code is obtained by measuring the tracks on the optical code disk during rotation. When rotation exceeds 360 degrees, the code returns to the origin, which contradicts the principle of unique absolute encoding. Such encoders can only be used for measurements within a rotation range of 360 degrees and are called single-turn absolute encoders. To measure rotation beyond 360 degrees, multi-turn absolute encoders are required. Manufacturers of absolute encoders use the mechanical principle of clock gears. When the central code disk rotates, another set of code disks (or multiple sets of gears and code disks) is driven via gear transmission. Encoding for the number of turns is added to the single-turn encoding to expand the measurement range. Such absolute encoders are called multi-turn absolute encoders. They are also determined by mechanical position, with unique, non-repeating codes for each position, requiring no memory. Another advantage of multi-turn encoders is that the large measurement range often provides considerable margin in actual use. Thus, there is no need to struggle to find the zero point during installation; a certain intermediate position can be used as the starting point, greatly simplifying installation and commissioning. Multi-turn absolute encoders have clear advantages in length positioning and are increasingly used in industrial control positioning.

Kiepe encoder device requirements

1. Requirements of CNC machine tools for detection elements and position detection devices (1) Requirements of CNC machine tools for detection elements: Detection elements are important components of detection devices. Their main function is to detect displacement and speed and send feedback signals. The minimum displacement that a displacement detection system can measure is called resolution. Resolution depends not only on the detection element itself but also on the measurement circuit. The main requirements of CNC machine tools for detection elements are: (1) long service life, high reliability, and strong anti-interference capability; (2) meeting precision and speed requirements; (3) ease of use and maintenance, suitable for the machine tool operating environment; (4) low cost; (5) ease of connection to computers. Different types of CNC machine tools have different requirements for the precision and speed of the detection system. Usually, large CNC machine tools prioritize meeting speed requirements, while medium, small, and high-precision CNC machine tools prioritize meeting precision requirements. When selecting the resolution and pulse equivalent of the measurement system, it is generally required to be one order of magnitude higher than the machining precision. (2) Requirements of CNC machine tools for position detection devices: Position detection devices are an important part of the servo system of CNC machine tools. Their function is to detect displacement and speed, send feedback signals, and form closed-loop or semi-closed-loop control. The machining precision of CNC machine tools is mainly determined by the precision of the detection system. Different types of CNC machine tools have different requirements for the precision of position detection elements and detection systems, as well as different maximum moving speeds of the measured components. The highest level of detection elements and systems is: when the maximum moving speed of the measured component is as high as 240m/min, the resolution of displacement detection (the minimum detectable displacement) can reach 1μm; for example, at 24m/min, it can reach 0.1μm. The highest resolution can reach 0.01μm. CNC machine tools have the following requirements for position detection devices: (1) minimal influence from temperature and humidity, reliable operation, long-term precision retention, and strong anti-interference capability. (2) meeting precision and speed requirements within the moving range of the machine tool's executing components. (3) ease of use and maintenance, adapting to the machine tool working environment. (4) low cost. Introduction to spindle encoders 2. Classification of position detection devices: For different types of CNC machine tools, different detection methods can be adopted due to different working conditions and detection requirements. (1) Incremental and absolute measurement: The incremental detection method only measures displacement increments and uses the number of digital pulses to represent the quantity of unit displacement (i.e., the minimum setting unit). A measurement signal is issued for every movement of one measurement unit. Its advantage is that the detection device is relatively simple, and any midpoint can serve as the measurement starting point. However, in this system, the displacement is read after accumulating measurement signals. Once accumulation errors occur, all subsequent measurement results will be incorrect. Additionally, in the event of a fault (such as power loss), the correct position before the fault cannot be found. After the fault is cleared, the worktable must be moved to the starting point and recounting performed to find the correct position before the fault. Pulse encoders, resolvers, induction synchronizers, gratings, magnetic scales, and laser interferometers are all incremental detection devices. The absolute measurement method measures the absolute coordinate position value of the measured component in a certain absolute coordinate system and represents it in binary or decimal digital signals. Generally, it must be converted into pulse digital signals before being sent for comparison and display. With this method, the higher the resolution requirement, the more complex the structure. Such measurement devices include absolute pulse code disks and three-speed absolute code disks (also known as multi-turn absolute code disks). (2) Digital and analog measurement: Digital detection quantifies the measured unit and represents it in digital form. The measurement signal is generally an electrical pulse, which can be directly sent to the CNC system for comparison and processing. Such detection devices include pulse encoders and gratings. Digital detection has the following 3 characteristics. (1) The measured quantity is converted into the number of pulses, facilitating display and processing; (2) Measurement precision depends on the measurement unit and is basically independent of the range; however, cumulative code errors exist; (3) The detection device is relatively simple, and pulse signals have strong anti-interference capability. Analog detection represents the measured quantity using continuous variables, such as changes in voltage amplitude or phase. Precise analog detection over a large range imposes high technical requirements. In CNC machine tools, analog detection is mainly used for small-range measurements. Analog detection devices include tachogenerators, resolvers, induction synchronizers, and magnetic scales. The main characteristics of analog detection are as follows. (1) Direct detection of the measured quantity without quantization. (2) High-precision measurement can be achieved within a small range. (3) Direct and indirect detection can be performed. Position detection devices installed on executing components (i.e., end pieces) to directly measure the linear or angular displacement of the end pieces of executing components are called direct measurement. This can form a closed-loop feed servo system.Measurement methods include linear gratings, linear induction synchronizers, magnetic scales, and laser interferometers to measure the linear displacement of executing components. Since this detection method uses linear detection devices to measure the linear displacement of machine tools, its advantage is that it directly reflects the linear displacement of the worktable. The disadvantage is that the detection device must be as long as the travel, which is a significant limitation for large machine tools. Position detection devices installed on transmission elements or drive motor shafts in front of executing components measure angular displacement. The linear displacement of the executing components is obtained after conversion via the transmission ratio. This is called indirect measurement and can form a semi-closed-loop servo feed system. For example, installing a pulse encoder on the motor shaft. Indirect measurement is reliable and convenient to use, with no length limitations. Its disadvantage is that the transmission chain error from converting linear motion to rotary motion is added to the detection signal, affecting measurement precision. Generally, compensation for the machine tool's transmission error is required to improve positioning precision. In addition to the above position detection devices, servo systems often include speed detection elements to detect and adjust engine speed. The commonly used speed detection element is the tachogenerator.

Kiepe encoder advantages and disadvantages

(1) Advantages: High precision, high resolution, high reliability, capable of directly outputting digital codes in a specific format, easy to connect with microcomputers and digital systems, very flexible and convenient to use, mainly used for measuring various displacements. (2) Disadvantages: (1) The resolution of contact encoders is limited by brushes and cannot be very high; (2) Contact causes friction, resulting in a shorter service life; (3) Contact points do not allow high-speed operation. Therefore, this type of encoder is rarely used.

Kiepe encoder technical specifications

HD encoders, also known as digital encoders, video encoders, HD video encoders, digital TV encoders, network video encoders, and digital video encoders, primarily function to perform digital encoding processing on input digital audio-video signal sources (including HDMI signal sources, SD-SDI signal sources, HD-SDI signal sources). Common encoding methods include MPEG-2, MPEG-4, H.264, H.265, etc. The signals are encoded into TS stream data suitable for real-time transmission. The data stream is then encapsulated in ASI format or IP format for output to downstream equipment, such as IPQAM modulators, digital TV modulators, digital modulators, and DTMB modulators. The ASI format generally uses BNC interface output, while the IP format uses 1000M Ethernet interface RJ45. The IP data stream generally supports protocols such as TS/HLS/RTSP/FLV/RTMP/UDP/RTP/unicast/multicast.

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