Allen-Bradley 1756-IA16 16-Channel Analog Input Module

The Allen-Bradley 1756-IA16 is a 16-channel ControlLogix digital input module designed for 120/240 V AC field signals and interfacing with the 1756 backplane. It provides sixteen discrete inputs with 125 V continuous isolation between the inputs/backplane and input groups, with no isolation between individual group inputs. Electrical specs include a 10.15 kΩ input impedance at 132 V AC, a cyclic update time of 200 µs to 750 ms, and time-stamp accuracy of ±200 µs. The module ships with a removable terminal block housing (1756-TBNH) and hardware keying (1756-TBSH), occupies a single 1.0 in slot, and is UL-listed for 120 V 50/60 Hz operation. It is intended for use in ControlLogix I/O configurations to read 16 discrete AC inputs from field devices such as switches and sensors, enabling reliable monitoring of plant equipment.