Ratings that drive the fit
The BMXDDI6402K: The 64 inputs are isolated in groups; an external 0.5 A fast-blow fuse per group is required (no reverse polarity protection on the sensor supply). The guaranteed ON threshold is ≥ 15 V, and OFF is effectively open (10 MΩ at 500 V DC). Typical response time is 4 ms, maximum 7 ms — fast enough for most discrete sensing, but not for high-speed counting. Power draw from the backplane is 160 mA typical at 24 V; total dissipation of 4.3 W is small so no extra cooling needed even in a tight cabinet. The sensor power supply rails must stay between 19 and 30 V.
Mounting and diagnostics
Compliance marks cover CE, UKCA, cULus, RCM, and EAC — approved for the EU, UK, US/Canada, Australia, and Eurasian markets. Directives include Low Voltage (2014/35/EU) and EMC (2014/30/EU).
