PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-OBN is a PLC-5 digital output module for DC sourcing systems. It provides thirty-two outputs arranged in four groups of eight circuits. The unit operates across a DC voltage range of 10 to 30 Volts. Continuous current rating reaches 0.5 A per output and 2 A per set. Maximum continuous current capacity reaches 8 A per module. Backplane current draw is 330 mA at 5 Volts DC.
This open-type module includes conformal coating and operates in Pollution Degree 2 environments. The hardware withstands an isolation voltage of 1500 Volts AC RMS. Four 4.0 A, 250 Volt normal blow fuses protect the four output groups. Operating temperature ranges from 0 to 60 degrees Celsius. Storage temperature spans from -40 to 85 degrees Celsius. Relative humidity tolerance extends from 5 to 95 percent non-condensing.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | PLC 5 |
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| GTIN | 10662468171455 |
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| Weight | 2.00 lbs (0.91 kg) |
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| Module Type | Digital DC Output Module |
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| Number of Outputs | 32 (4 sets of 8) |
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| Voltage Category | 10-60 Volts DC, Source |
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| DC Operating Voltage | 10-30 Volts |
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| Backplane Current | 330 Miliamperes |
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| Max Continuous Current Per Output | 0.5 Amperes (2 A/set) |
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| Max Continuous Current Per Module | 8 Amperes |
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| Wiring Arm | 1771-WH |
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| Coating | Conformal Coat |
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| Data Format | BDC or Natural Binary |
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| Typical AC Signal Delay (Off) | 45 (+/- 15) ms |
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| Typical DC Signal Delay (Off) | 50 ms |
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| Mounting | Rack Mountable |
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| UPC | 10662468171455 |
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TECHNICAL INFORMATION
Features
- Provides thirty-two sourcing DC outputs organized into four groups of eight.
- Delivers up to 0.5 A continuous current per output channel.
- Includes factory conformal coating for environmental protection.
- Features an isolation voltage rating of 1500 Volts AC RMS.
- Protects output groups using four 4.0 A normal blow fuses.
- Supports BCD or Natural Binary data formats across the backplane.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to field devices using the 1771-WH or 1771-WN wiring arm.
- Installs directly into any compatible 1771 I/O chassis slot.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module into a compatible Allen-Bradley 1771 rack slot.
- Ensure the environment does not exceed Pollution Degree 2 inside enclosures.
- Handle equipment carefully to avoid electrostatic discharge damage.
- Verify ambient operating temperatures stay between 0 and 60 degrees Celsius.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 I/O chassis assemblies.
- Integrates with Allen-Bradley PLC-5 control systems.
TECHNICAL INFORMATION
Compliance and Certifications
- Rated for open-type equipment in Zone 2 Pollution Degree 2 environments.
- Withstands electrostatic discharge of 4 kV contact and 8 kV air.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 I/O chassis assemblies. Integrates with Allen-Bradley PLC-5 control systems.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
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 output current capacity of the Allen-Bradley 1771-OBN?
Each output provides up to 0.5 A. Each group of eight outputs supports up to 2 A.
Which wiring arms work with the 1771-OBN module?
The module connects using the 1771-WH or 1771-WN wiring arm.
What fuses protect the 1771-OBN output circuits?
Four 4.0 A, 250 Volt normal blow fuses provide circuit protection. One fuse protects each eight-output group.
What is the market reference price for the 1771-OBN?
Observed market reference pricing is approximately 159 USD for refurbished units. This figure is indicative market reference pricing only and is not a final quotation.
