Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1756-OB16E |
| Product Type | DC Electronically Fused Output Module |
| Platform | ControlLogix (1756) |
| Number of Outputs | 16 (8 points per group) |
| Voltage Category | 12/24 V DC source |
| Operating Voltage Range | 10…31.2 V DC |
| Current per Point | 1 A max @ 60 °C |
| Current per Module | 8 A max @ 60 °C |
| Current Draw @ 5.1 V | 250 mA |
| Power Dissipation (max) | 4.1 W @ 60 °C |
| Terminal Block | 1756-TBNH or 1756-TBSH (ordered separately) |
| Fusing | Electronic (per group) with diagnostics |
4. Product Introduction (Anti-Template)
The Allen-Bradley 1756-OB16E is a 16-point DC output module for the ControlLogix platform. It provides electronically fused sourcing outputs rated for 10–31.2 V DC field power, with a nominal 12/24 V DC rating.
Outputs are arranged in two groups of eight points. Each group is electronically fused, and fuse status is reported to the Logix controller. The module supports a maximum of 1 A per point and 8 A per module at 60 °C. It installs in any standard 1756 ControlLogix chassis and uses a removable terminal block (1756-TBNH or 1756-TBSH). The electronic fusing and diagnostic feedback make it suitable for general-purpose 24 V DC loads such as solenoids, relays, and indicator lamps where per-point or per-group protection is desired.
1756-OB16E
1756-OB16E
1756-OB16E
1756-OB16E
1756-OB16E
5. QC, Procurement & Logistics SOP
- Inbound Verification – Confirm full catalog number (1756-OB16E), series/firmware labels, and terminal block interface condition. Photograph all labels.
- Functional Testing – Install in a compatible ControlLogix chassis and verify module status, output indicators, and basic output switching. Full validation requires the Studio 5000 project configuration.
- QA & Packaging – Protect the backplane connector and front connectors, clean according to electronics handling practices, and pack in anti-static protective packaging.
- Global Logistics & Export Compliance – Classify under the correct HS code for industrial PLC I/O modules. Packaging must protect connectors; export documentation is prepared to minimize customs delays.
6. Technical Pitfalls & Integration Warnings
Current Limits – Do not exceed 1 A per point or 8 A per module. Higher-current loads require a different module (e.g., 1756-OB16D) or external interposing relays.
Terminal Block – The removable terminal block is ordered separately. Confirm the correct RTB type (1756-TBNH or 1756-TBSH) is available.
Fuse Reset – Electronic fuses may require a reset command or power cycle after a fault; verify the application handles fuse status correctly.
Wiring – Observe correct polarity and group commons. Incorrect wiring can damage the module or field devices.
7. Frequently Asked Questions (FAQ)
What is the realistic global lead time for a verified 1756-OB16E?
As a standard ControlLogix I/O module, availability is generally good. Typical lead time after verification is a few days to 2 weeks depending on stock.
What is the primary function of this module?
It is a 16-point electronically fused 12/24 V DC sourcing output module for ControlLogix systems.
What is the maximum current per point?
1 A at 60 °C.
What is the maximum current per module?
8 A at 60 °C.
Does it have electronic fusing?
Yes. Outputs are electronically fused in two groups of eight, with diagnostic reporting to the controller.
What terminal block does it use?
1756-TBNH or 1756-TBSH (ordered separately).
What should be confirmed before ordering a replacement?
Exact catalog number (1756-OB16E), compatibility with the existing chassis and project, and availability of the correct removable terminal block.
