Carlo Gavazzi A0BC2XXXIX Panel Meter

Carlo Gavazzi MDI40 digital panel meter is a two‑channel, two‑input µP‑based panel rate meter designed for direct display of frequency or rate in industrial control panels. It accepts two measuring inputs (A and B) with two selectable ranges: r1 from 0.001 Hz to 500 Hz and r2 from 0.1 Hz to 50 kHz, with DC NPN (ON < 2 V) or PNP (ON > 10 V) input configurations using open‑collector logic on pins 6–7. The red 7‑segment display is 14.2 mm high and can show up to 9999; the unit provides two independent control points for scaling and transmission of the measured value, and offers optional analogue and serial outputs alongside its two relay outputs. Technical performance includes a typical accuracy of ±0.01% full scale with ±3 digits, specified over 18–23 °C, and a response time tied to the selected time base (up to about 200 ms). The MDI40 is intended for panel mounting and is suitable for speed, RPM, or frequency monitoring, with straightforward integration to PLCs and instrumentation through its configurable outputs.