KUBLER Absolute Value Encoder

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The KUBLER absolute encoder from Germany measures the engraving lines of each track on a rotating photoelectric encoder

There are many optical channel markings on the absolute encoder optical encoder disc, and each marking is arranged in sequence with 2 lines, 4 lines, 8 lines, and 16 lines. In this way, at each position of the encoder, by reading the brightness and darkness of each marking, a set of binary codes (Gray codes) from the zero power of 2 to the n-1 power of 2 is obtained, which is called an n-bit absolute encoder. This encoder is memorized by a photoelectric encoder.

Absolute encoders encode based on mechanical position determination, without the need for memory, reference points, or continuous counting. They can read the position whenever they need to know it. In this way, the anti-interference characteristics of the encoder and the reliability of the data are greatly improved.

From a single turn KUBLER absolute value encoder to a multi turn KUBLER absolute value encoder, the absolute value rotation of the single turn KUBLER absolute value encoder is used to measure the engraved lines of the photoelectric encoder during rotation to obtain the encoding. When the rotation exceeds 360 degrees, the encoding returns to the origin, which does not comply with the principle of absolute encoding. This encoding can only be used for measurements within the rotation range of 360 degrees, and is called a single turn KUBLER absolute value encoder.

This is a detector that can output the angle data within one rotation of the motor to an external target. Absolute encoders can generally output 360 ° with 8 to 12 bits

The incremental encoder has a drawback: it loses axis position when a power failure occurs. However, for absolute encoders, even in the event of a power failure, the axis position is not lost. It can output various codes, such as binary code and BCD code.

Absolute encoders are more expensive, accurate, and larger than incremental encoders. Refer to "Encoder"

There are many optical channel markings on the absolute encoder optical encoder disc, and each marking is arranged in sequence with 2 lines, 4 lines, 8 lines, and 16 lines. At each position of the encoder, a set of binary codes (Gray codes) ranging from the zero power of 2 to the n-1 power of 2 is obtained by reading the brightness and darkness of each marking. Absolute encoders encode based on mechanical position determination, without the need for memory, reference points, or continuous counting. They can read the position whenever they need to know it. Absolute encoders have a range of measurement and are suitable for use on some special machine tools.

The solution is to increase the reference point, and the encoder will correct the reference position into the memory position of the counting device every time it passes through 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 a reference point before each operation and finding the change when starting up.

This method is quite troublesome for some industrial control projects, and even does not allow for zero change upon startup (the exact location needs to be known after startup), which led to the emergence of absolute encoders.

There are many optical channel markings on the series absolute encoder optical encoder disc, each of which is arranged in sequence with 2 lines, 4 lines, 8 lines, and 16 lines. At each position of the encoder, by reading the brightness and darkness of each marking line, a set of binary codes (Gray codes) from the zero power of 2 to the n-1 power of 2 is obtained, which is called an n-bit absolute encoder. This encoder is determined by the mechanical position of the photoelectric encoder and is not affected by power outages or interference.

Absolute encoders encode based on mechanical position determination, without the need for memory, reference points, or continuous counting. They can read the position whenever they need to know it. In this way, the anti-interference characteristics of the encoder and the reliability of the data are greatly improved.

single loopKUBLER Absolute Value EncoderTo multi cycle KUBLER absolute value encoder.

Absolute value rotation in a single circleKUBLER Absolute Value EncoderThe encoding obtained by measuring the engraved lines of the photoelectric encoder during rotation is called a single circle KUBLER absolute encoder. When the rotation exceeds 360 degrees, the encoding returns to the origin, which does not comply with the principle of absolute encoding. This encoding can only be used for measurements within the rotation range of 360 degrees.

When measuring rotations exceeding 360 degrees, a multi turn KUBLER absolute encoder is used. The encoder is produced using the mechanical principle of clock gears. When the central encoder rotates, another set of encoders (or multiple sets of gears, multiple sets of encoders) is transmitted through gears. On the basis of single turn encoding, the number of turns is added to expand the measurement range of the encoder. This type of absolute encoder is called a multi turn absolute encoder, which is also determined by mechanical position encoding. Each position encoding is not repeated and does not require memory.

Another advantage of multi turn encoders is that due to their large measurement range, they often have more flexibility in use. This way, there is no need to struggle to find the zero point during installation, and a certain middle position can be used as the starting point, greatly simplifying the difficulty of installation and debugging.