H8PS-8BFP Omron Cam Positioner

H8PS series electronic cam programmers_x000D_ Easy to adjust using single function keys._x000D_ Easy replacement of mechanical cam programmers._x000D_ Number of outputs 8, 16 or 32._x000D_ Coder rotation direction change possible and easy correction at the start point._x000D_ Backlit liquid crystal display._x000D_ Solid Shaft / Hollow Shaft Absolute Encoders_x000D_ Application_x000D_ An absolute encoder provides the ability to remember the exact position following any power interruption. There is also no need for synchronisation. This is one of the reasons why absolute encoders are used where a safety standard is required (i.e. robotics industry). Typical applications are for speed or position control circuits. The features for these encoders are:_x000D_ + A unique signal for each angular position_x000D_ No need for initialisation (zero reference)_x000D_ Immediately after power up or after an interruption of power the position is maintained_x000D_ No need for a counter to process the signal_x000D_ Construction_x000D_ The electrical signal of the absolute encoder is directly related to the angle of the shaft. The mechanical angular position is sensed by non contact optical elements, therefore without wear. The output of an infrared diode is transmitted through a transparent code disc and a diaphragm. The light/dark pattern is converted to an electrical signal by an array of photo diodes. The same code occurs only once per revolution. This encoder is defined as a single turn encoder._x000D_ Output circuit_x000D_ Types of Code_x000D_ Any electronic code is made out of a combination of bits. Each bit is characterised by a Low (0) or a High (1) signal. The combination of a series of bits is called a binary word. Several binary words make a code._x000D_ Single Step Code - Only one bit on the parallel output changes state at any given time. There is no possibility of any concurrent state changes. Single step code is very versatile and can maintain accuracy even allowing for slight misalignments of the disc and scanning device_x000D_ Gray Code - This is a single step code, most absolute encoders use this code_x000D_ Multiple Step Codes - Natural binary code: This type of code is similar to the decimal system, except that there are only 1 and 0. Each bit, depending on its position in the binary word, has a definite value. 20 to 2n assigned