Electrical current measuring circuitry of control system used for controlling servo-drive of automation system, has analog filter to carry out frequency-dependent amplification of measuring signal from which current value is measured

摘要

A current measuring device (110) measures the magnitude of current value (20) of dependent measuring signal (115), an analog filter (120) carries out frequency-dependent amplification of measuring signal, and an analog-to-digital converter (130) converts output signal (125) of filter into bit stream (135). A transmission device (140) carries out electrically isolated transmission of bit stream. A digital filter (150) and a decimator (160) are adapted for converting the information occurring frequently in the bit stream (145) into data words (165). An independent claim is included for electrical current measuring method.