Allen-Bradley 1794-OE8H 13-Bit Analog Output Module

The Allen-Bradley 1794-OE8H Flex I/O HART Analog Output Module provides eight single-ended analog outputs with 13-bit resolution per channel for precise process control in FLEX I/O networks. It operates from a 24 V DC nominal supply (19.2–31.2 V, includes ripple) via terminals 34/50 (+) and 35/51 (-) and dissipates up to about 6.1 W. All eight outputs are non-isolated from each other, and the module includes eight red fault indicators, eight yellow HART indicators, and one green power indicator for straightforward status monitoring. Update rate is 10 ms per channel, with a 13 ms path to 99% of full scale; HART communication adds about 115 ms during data exchanges. The output current specification supports 0–22 mA into loads greater than 15 V, enabling standard HART loop operation when paired with suitable field devices. The physical footprint is approximately 46 x 94 x 75 mm (1.8 x 3.7 x 2.95 in) for the module itself, with an installed footprint around 94 x 94 x 91 mm (3.7 x 3.7 x 3.6 in). As a FLEX I/O module, it plugs into a FLEX I/O base and integrates with Rockwell Automation controllers, providing distributed analog output capability across a distributed I/O network. This model, catalog number 1794-OE8H, is designed for applications requiring reliable HART-enabled analog outputs across multiple channels in industrial environments. *