What is a Process-Zero?
Dynamic applications describe recurring, fast measurement cycles, as usually found in presses. In cyclic applications, it is important that the zero point is tared in regular intervals in order to minimize drifting of the measuring signal. Thanks to the digital input, the zero point adjustment can be easily teached-in by the PLC.
The zero point adjustment can be triggered via the PLC. If the input is pulled to >10 V, the signal is set to zero (reset) and the zero point adjustment is carried out. If the input is open or 0V, the sensor is in measuring mode. The reset logic is alternatively available with “Active-High-Levels” instead of “Active-Low-Levels”.
The zero-point adjustment at these strain sensors is carried out by a digital zero-point adjustment mechanism. The zero-point adjustment is stored within the sensor. Thus, a non-volatile, stable zero-point adjustment is available regardless of the cycle times. The time span between the taring procedures can be freely selected without any limitation. It should be noted that the zero point is not stored in the event of a power failure. Therefore, these strain sensors are suitable for all dynamic applications. They can be universally used in all applications which require a periodic zero-point reset.