Allen-Bradley 1746-IB16 is a 16-channel discrete DC input module for the SLC 500 family that provides sinking 24 V DC inputs. It uses a single input group with a common and is wired in a sinking configuration across all channels. The module operates on an input range of 10–30 V DC, with a nominal input current around 8 mA per channel at 24 V, an off-state current limit of 1 mA, and an off-state voltage up to 5 V. The typical response delay for input transitions is about 8 ms. It accepts 14 AWG conductors via self-lifting pressure plates, enabling reliable field wiring, and is intended for use with Allen-Bradley SLC 500 controllers to monitor digital sensors and switches.
