Allen-Bradley 1746-IO8 Digital Input Output Module

The Allen-Bradley 1746-IO8 is a SLC 500 combination input/output module that provides four discrete inputs and four relay-output contacts in a single 1746-format card for use on the 1746 backplane. The input side accepts four 120 VAC signals, allowing wiring of field sensors or switches directly to the module. The output side provides four relay contacts rated for up to 1.5 A at 120 VAC per output (and 1.2 A when powered from 24 VDC). Input off-state current is up to 2 mA. Catalog numbers in this family include 1746-IO4 and 1746-IO8, reflecting the line of combination I/O modules used in SLC 500 systems. The 1746-IO8 combines sensing and control on one module, enabling compact rack wiring and straightforward integration with Allen-Bradley PLCs on the SLC 500 backplane.