PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1791-IOBA is a Remote I/O (RIO) Block Module for the Block I/O 1791 platform. This unit provides 16 total field I/O channels. The channel architecture consists of eight DC inputs and eight DC outputs. It communicates across standard Universal Remote I/O network lines. The device operates over a DC power supply range of 20.5 to 27.6 volts DC.
Field inputs support both sinking and sourcing wiring schemes for diverse sensor interfaces. Sourcing PNP outputs provide control signals at a nominal rating of 24 volts DC. Optical isolation separates internal control circuitry from external field wiring. Physical installation accommodates standard DIN rail mounting or direct panel screw attachment. Removable terminal strips simplify wiring maintenance.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Weight | 0.88 lbs (0.40 kg) |
|---|
| UPC | 612598119127 |
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| Total I/O Points | 16 Points |
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| Configuration | Combination I/O (8 Outputs, 8 Inputs) |
|---|
| Network Protocol | Universal Remote I/O (RIO) |
|---|
| Addressing | Configured via rotary switches for Rack Number and I/O Group |
|---|
| Operating Voltage Range | 20.5 to 27.6 volts DC |
|---|
| Input Type | Sinking/Sourcing |
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| Output Type | Source (PNP) 24V DC |
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| Isolation | Opto-isolated I/O circuitry |
|---|
| Termination | Removable Terminal Strips |
|---|
| Mounting | Panel Mount (Screw) or DIN Rail |
|---|
TECHNICAL INFORMATION
Features
- Features 16 total discrete points divided into eight inputs and eight outputs.
- Uses the Universal Remote I/O (RIO) communication protocol.
- Accommodates an operating supply voltage range between 20.5 and 27.6 V DC.
- Supports both sinking and sourcing DC input wiring configurations.
- Provides sourcing PNP discrete outputs rated for 24 volts DC.
- Incorporates opto-isolated I/O circuitry to protect internal logic.
- Includes rotary switches for straightforward rack number and I/O group addressing.
- Mounts via standard DIN rail or panel screws using removable terminal strips.
TECHNICAL INFORMATION
Applications
- Distributed machine control using Universal Remote I/O networks.
- Interfacing discrete 24V DC sensors and actuators in industrial control panels.
- Remote station deployment requiring a compact combination of discrete inputs and outputs.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to the controller via a Universal Remote I/O network link.
- Field wiring interfaces connect using removable terminal strips.
- Accepts sinking or sourcing sensor signals on eight designated input terminals.
- Supplies sourcing PNP power to field devices across eight output terminals.
TECHNICAL INFORMATION
Installation Guidelines
- Secure the module directly to a flat panel using screws or snap onto a DIN rail.
- Ensure the direct DC power supply remains within 20.5 to 27.6 V DC.
- Set rack number and I/O group rotary switches before applying operational power.
- Tighten wiring securely into the removable terminal strips before seating them.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure network communication using onboard rotary switches.
- Select the appropriate rack number and designated I/O group via switch positions.
- Verify host PLC scanner configuration matches the assigned rack and group settings.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What communication protocol does the Allen-Bradley 1791-IOBA use?
It communicates using the Allen-Bradley Universal Remote I/O (RIO) network protocol.
What type of I/O points are provided on the 1791-IOBA module?
The module provides 16 total points, split into eight sinking/sourcing inputs and eight 24V DC sourcing outputs.
How is network addressing configured on the 1791-IOBA?
Addressing is configured manually using onboard rotary switches for the rack number and I/O group.
What is the market reference price for the 1791-IOBA?
Observed market reference pricing spans $324.05 to $825.99 across secondary channels. Indicative market reference only; not a final quotation.
