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 Rotary photoelectric absolute Pepperl+Fuchs encoders, because each position is absolutely unique, anti-interference, and does not need power-down memory, has been more and more widely used in angle and length measurement and positioning control in various industrial systems. When the rotary shaft of the incremental encoder rotates, there is a corresponding pulse output. The determination of the rotation direction and the increase or decrease of the number of pulses are realized by the direction circuit and counter at the rear. okplazas.com supplies original encoders from stock, which have been used in hundreds of large-scale enterprises in Baosteel Group and Jiangnan Shipbuilding.

Rotary incremental encoder outputs pulses while rotating, and knows its position through counting equipment. When the encoder does not move or the power is cut off, it relies on the internal memory of the counting equipment to remember the position. In this way, when the power is off, the encoder cannot move. When the power is on, the encoder cannot lose the pulse due to interference during the output pulse. Otherwise, the zero point of the counting device will shift, and this deviation There is no way to know the amount of shift, only after the wrong production results appear. The solution is to increase the reference point. Every time the encoder passes the reference point, the reference position is corrected into the memory position of the counting device. 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 for each operation, turning on the machine, and so on. Pepperl+Fuchs encoder only measures the angular displacement (indirectly angular velocity) increment, and the previous moment is the base point. The absolute type is relatively inaccurate when measuring the angular displacement from the beginning of the work, but there is no cumulative error in the large angle.