PRODUCT INFORMATION
Product Overview
Revision scope: These specifications describe 1756-OB16E/A (Series A). Check the corresponding technical data before specifying another hardware series.
The Allen-Bradley 1756-OB16E ControlLogix Digital Fused Output Module provides 16 discrete direct-current outputs. These outputs operate across a standard range of 10 to 31.2 V DC. The unit organizes channels into two isolated groups of eight outputs each. Electronic fusing protects individual circuits during operational load faults. Each output supplies up to 1.0 A at 60 degrees Celsius. Total continuous module load reaches up to 8.0 A under full thermal limits.
Internal circuitry draws 250 mA at 5 V DC and 2 mA at 24 V DC backplane power. Maximum module power dissipation reaches 4.1 W at 60 degrees Celsius. Signal switching speeds deliver an OFF-to-ON delay of 70 microseconds nominal. Nominal ON-to-OFF transition delay is 360 microseconds, with a maximum 1 millisecond rating. This output assembly mounts securely inside standard ControlLogix chassis architectures.
TECHNICAL DATA
Technical Specifications
These specifications describe 1756-OB16E/A (Series A). Check the corresponding technical data before specifying another hardware series.
| Parameter | Specification |
|---|
| Number of outputs | 16 discrete DC outputs (electronically fused, two groups of 8) |
|---|
| Output voltage range | 10–31.2 V DC (nominal 24 V DC) |
|---|
| Maximum current per channel | 1.0 A @ 60 °C / 140 °F |
|---|
| Maximum current per module | 8.0 A @ 60 °C / 140 °F |
|---|
| Power dissipation (max) | 4.1 W @ 60 °C / 140 °F |
|---|
| Output delay (OFF → ON / ON → OFF) | 70 µs nominal (OFF→ON) / 360 µs nominal (ON→OFF); max 1 ms each |
|---|
| Backplane current draw | 250 mA @ 5 V DC; 2 mA @ 24 V DC |
|---|
TECHNICAL INFORMATION
Order Information
| Revision Part # | Also known as | Reference Price |
|---|
| 1756-OB16E Ser A | 1756-OB16E/A, Series A | USD 229.00–479.00, indicative |
Reference prices are observed third-party market prices for the stated revision, not a final Aituos quotation.
TECHNICAL INFORMATION
Features
- Sixteen discrete electronically fused DC outputs arranged in two groups of eight channels.
- Operating voltage window spanning 10 to 31.2 V DC with a 24 V DC nominal rating.
- Delivers up to 1.0 A current per channel at 60 degrees Celsius operational limits.
- Supports total continuous output loading of up to 8.0 A per module.
- Low backplane energy consumption drawing 250 mA at 5 V DC and 2 mA at 24 V DC.
- High-speed channel response with nominal 70 microsecond turn-on switching speed.
TECHNICAL INFORMATION
Applications
- ControlLogix chassis output switching for 24 V DC industrial pilot devices and actuators.
- Solenoid valve and indicator control requiring electronic short-circuit and overload protection.
- Distributed machine control systems demanding fast direct-current discrete output switching.
TECHNICAL INFORMATION
Connections / Interfaces
- Compatible with standard ControlLogix Removable Terminal Blocks for field termination.
- Dual-group channel layout separates field wiring into two distinct eight-channel groups.
TECHNICAL INFORMATION
Installation Guidelines
- Install directly into any available ControlLogix chassis slot.
- Maintain ambient operating temperatures within specified 60 degrees Celsius limits.
- Verify field wiring adheres to maximum group current limitations during commissioning.
TECHNICAL INFORMATION
Configuration Guidelines
- Define module I/O configuration profiles within Rockwell Studio 5000 or RSLogix 5000 software.
- Assign fused output behavior and fault handling per individual group requirements.
TECHNICAL INFORMATION
Compatibility
- Operates in all standard Allen-Bradley 1756 ControlLogix chassis.
- Communicates over ControlLogix backplanes with 1756 ControlLogix processor assemblies.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- Documented hardware revisions include Series A (1756-OB16E/A).
- Maintain identical software profile and wiring configurations when replacing legacy units.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSOperates in all standard Allen-Bradley 1756 ControlLogix chassis. Communicates over ControlLogix backplanes with 1756 ControlLogix processor assemblies.
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 channel capacity and voltage rating of the 1756-OB16E?
The module provides 16 discrete DC outputs operating between 10 and 31.2 V DC nominal.
What are the load current limits for the 1756-OB16E?
Each channel supports 1.0 A at 60 °C, with a maximum total module limit of 8.0 A.
What is the typical market reference price for the 1756-OB16E?
Observed market reference pricing spans USD 229.00 to 479.00. This is indicative market reference pricing only and not a final quotation.
