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ALLEN-BRADLEY BLOCK I/O COMPONENT
1791-OB16
16-Point DC Output
Self-Contained Block I/O
DISTRIBUTED 24 V DC OUTPUT CONTROL
Allen-Bradley 1791-OB16 16-Point DC Output Block I/O Module
A self-contained 16-output block for remote I/O networks and distributed field-device switching.
DISTRIBUTED DISCRETE OUTPUTS
Compact 16-point DC switching at the machine level
1791-OB16 combines field termination, remote I/O communication and two eight-point output groups in one block-mounted assembly.
Product function
DC output Block I/O
Output grouping
Two groups of eight
External power
19.2–30 V DC
Signal delay
0.5 ms on / 1 ms off
Mounting
Vertical or horizontal
Performance & Efficiency
Distributed control — Block mounting reduces long home-run wiring.
Fast response — Millisecond output timing supports machine sequencing.
Integrated termination — Self-contained field connections simplify installation.
Compatibility & Interoperability
Remote I/O network — Use with compatible Allen-Bradley scanner architecture.
DC field loads — Verify current limits for mounting orientation.
Panel layout — Maintain required air gaps and grounding.
Brand characteristics
Allen-Bradley Block I/O products combine distributed communication, integrated field termination and durable industrial packaging.
Distributed architectureField-level I/O reduces cabinet wiring runs.
Defined loadingPublished current limits support dependable design.
Service visibilityChannel indicators simplify commissioning and diagnostics.
Application fields
1791-OB16 supports 24 V DC field-device switching in established Allen-Bradley remote I/O installations.
Machine outputsControl of valves, relays and indicators.
Material handlingDistributed conveyor and actuator switching.
Lifecycle projectsBlock I/O replacement in legacy networks.
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