Allen-Bradley 1769-IQ32T 32-Point DC Input Module

Allen-Bradley 1769-IQ32T is a 32-point, 24V DC input module for CompactLogix/Compact I/O systems, delivered in a single-wide, terminated format with screw-terminal blocks. It provides 32 digital input points capable of sink or source wiring on a 24V DC power range, specified as 20.4–26.4V DC at 60 °C, with an input impedance of 5.6 kΩ and robust isolation between input points and the bus of up to 1200 VAC for 1 second (and 75 V DC working voltage between groups). The module’s dimensions are approximately 118 × 35 × 87 mm (4.65 × 1.38 × 3.43 in) and it weighs about 0.61 lb (0.28 kg). Internal current draw is around 170 mA at 5.1 V, with maximum heat dissipation around 4.77 W. Electrical thresholds include an on-state voltage minimum of 19 V and an on-state current minimum of 2 mA, with an off-state voltage maximum of 11 V and an off-state current maximum of 1.7 mA; input delay ranges from 0.1 ms (off→on) to a typical 0.42 ms (max) and 0.25 ms (on→off) to a typical 1.0 ms (max). Digital filtering is configurable with options of 0 s, 100 ms, 500 ms, 1 ms, 2 ms, 4 ms, or 8 ms. The “T” suffix denotes termination with screw terminals, and the module is designed for use up to eight slots away from the power supply in a CompactLogix rack. In practical terms, it’s well suited for collecting 24V DC sensor and switch signals—such as proximity sensors, pushbuttons, and limit switches—from field devices into a CompactLogix controller.