Allen-Bradley 1764-24BWA SLC 500 Compact IO Module

The Allen-Bradley 1764-24BWA is a 24-point base I/O module for MicroLogix 1500 controllers, delivering 12 inputs and 12 relay outputs in a compact base unit used for SLC 500/ML‑1500 style I/O configurations. It is powered from an internal line-powered supply that accepts 85 to 265 V AC at 47 to 63 Hz, drawing about 88 VA during normal operation. The 12 input channels are 24 V DC, sinking or sourcing, while the 12 outputs are relay-type contacts, with a 24 V DC user power output up to 400 mA (max 400 µF on the common bus); the module’s line-inrush characteristics are 25 A for 8 ms at 120 V AC or 40 A for 4 ms at 240 V AC. Typical CPU hold-up time ranges from 10 to 3000 ms, and terminal screws are torqued to 1.13 N·m (10 lb‑in) with a maximum of 1.3 N·m (12 lb‑in). Programming compatibility follows the RSLogix 500 lineage: RSLogix 500 v3.01.09 or later for 1764‑LSP series A processors, and RSLogix 500 v4.00.00 or later for 1764‑LSP and 1764‑LRP series B processors, aligning with common MicroLogix 1500 deployment workflows.