Allen-Bradley 1746-IV16 is a 16-channel digital input module for the SLC 500 family that provides current-sourcing DC inputs. It accepts 10–30 V DC signals and draws about 85 mA from the backplane (5 V), with an off-state current around 1 mA and a typical input response of 8 ms. Designed for general-purpose DC sensing, it’s commonly used with 24 V sensors such as pushbuttons and switches and mounts in standard SLC 500 backplanes alongside other 1746 I/O modules.
