Introduction
2-channel inductive displacement sensor interface (LVDT, half bridge, RVDT)
The EL5072 EtherCAT Terminal is used for direct connection of up to two inductive displacement sensors, including measuring probes in LVDT and half bridge design or inductive angular position sensors in RVDT design. The integrated excitation source provides a wide range with different adjustable excitation frequencies and voltages. Through internal switching and switchable input impedances, commercially available inductive sensors such as LVDT in 4-, 5-, 6-wire design or half bridge in 3- and 5-wire design can be connected and evaluated.
All sensor parameters such as excitation frequency, excitation voltage, measuring range and sensitivity are set directly in the terminal. The measuring signal range is automatically adjusted; the measured value is directly output as a 32-bit position value. Inversion of the measuring signal and a reference position can be parameterized via the process data. Furthermore, short circuit or overload of the excitation source, as well as amplitude errors of the input signal are diagnosed for each channel and indicated via signal LEDs.
Precision measuring tasks in the area of position and distance measurement with inductive measuring probes can be successfully solved in this way with the EL5072.