OVERVIEW

Official designation: Allen-Bradley 1791R-0B16P (CompactBlock I/O, 16 Point Output Block)

Role/Application: A base module with a built-in Remote I/O adapter that provides 16 sourcing 24 Volts DC digital outputs for controlling actuators and devices in distributed industrial control systems.

KEY SPECS SUMMARY

Power: 18 to 30 Volts DC

Interfaces / Ports: Removable termination

Indicators: Status, Comm, I/O status indicators

Operating Temp: Refer to the latest manufacturer manual.

Platform / Compatibility: Remote I/O link

Limit: 0.5 Amperes maximum On-state current

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum surge current capacity for the 1791R-0B16P output block?

A: The maximum surge current is 1 Ampere for a duration of 10 milliseconds.

Wiring & Installation:

Q: What is the correct wire size range for the removable termination on this module?

A: The wire size must be a maximum of 2 millimeters squared (14 gauge) stranded.

Troubleshooting & Compatibility:

Q: What is the function of the hardware watchdog in the 1791R-0B16P module?

A: The hardware watchdog puts outputs in a known safe state upon processor failure.

Replacement & Upgrades:

Q: What is the official replacement product series for the discontinued CompactBlock 1791R series?

A: Replacement options are typically found in the newer Allen-Bradley FLEX I/O or POINT I/O series.