PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1791D-0B16PX CompactLogix Expansion Block - 16 Source Outputs is a 16 sourcing output expansion module. It belongs to the CompactBlock I/O family. The compact unit integrates I/O circuits and connects to a base block. It serves distributed layouts near field actuators and sensors. Built-in output short-circuit protection prevents hardware damage from accidental miswiring. Yellow status indicators provide clear visual monitoring of active I/O channels.
This expansion block operates with a rated device voltage range of 10 to 30 Volts DC. The 16 sourcing outputs are arranged into two distinct groups of eight. Output on-state current reaches up to 0.5 A maximum per point. The module specifies 500 Volts AC isolation for group-to-group and group-to-logic circuits. Expansion power requires 5 Volts DC at 100 mA. Auxiliary power supports 10 to 30 Volts DC with a 4 A maximum rating.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Category | PLCs |
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| Enclosure | IEC IP20 |
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| Inputs per Block | 0 |
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| Output On-state Current | 0.5A max. |
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| Output On-state Voltage Range | 10-30V dc |
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| Output Type | Sourcing |
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| Outputs per Block | 16 |
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| UPC | 612598185702 |
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| Weight | 0.25 lbs (0.11 kg) |
|---|
TECHNICAL INFORMATION
Features
- Sixteen sourcing DC outputs organized into two isolated groups of eight points.
- Output short-circuit protection against accidental field miswiring.
- Yellow status indicators displaying individual channel output activity.
- Rated device power support spanning 10 to 30 Volts DC.
- Isolation rating of 500 Volts AC between groups and logic circuitry.
- Compact IEC IP20 rated industrial housing designed for DIN rail mounting.
TECHNICAL INFORMATION
Connections / Interfaces
- Ribbon cable interface connects the expansion block directly to the base module.
- Terminal connections provide 16 sourcing output channels across two eight-point banks.
- Auxiliary power supply terminals accept 10 to 30 Volts DC up to 4 A.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the unit directly onto a standard DIN rail to satisfy operating specifications.
- Support horizontal or vertical mounting orientations alongside the compatible base block.
- Verify that the ribbon cable displays the red stripe on top during side-by-side assembly.
- Use a longer ribbon cable when configuring base and expansion modules vertically.
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 is the primary function of the Allen-Bradley 1791D-0B16PX?
It provides 16 sourcing DC outputs to expand an existing CompactBlock I/O assembly.
What output current and voltage does the 1791D-0B16PX deliver?
Each point delivers up to 0.5 A maximum across a 10 to 30 Volt DC range.
How is the 1791D-0B16PX physically interconnected with a base block?
It links via an expansion ribbon cable and mounts horizontally or vertically on a DIN rail.
What electrical isolation is provided on the 1791D-0B16PX?
The module provides 500 Volts AC isolation for group-to-group and group-to-logic connections.
