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Fixed I/O Controllers | Allen-Bradley 1747-L30L
Fixed I/O Controllers | Allen-Bradley 1747-L30L
Brand/Manufacturer: Allen-Bradley
Order Number: 1747-L30L
Type: Fixed I/O Controllers
Country of Origin: Sweden
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Allen-Bradley 1756-CNBR/E (Series E) is a ControlLogix communication bridge module engineered to establish fault-tolerant connections over redundant ControlNet network topologies. Designed for medium-scale industrial control setups, this single-slot module enables real-time peer-to-peer data exchange and I/O communication using the Common Industrial Protocol (CIP). It supports up to 99 nodes per ControlNet segment, handling between 40 to 48 Logix connections and up to 64 maximum concurrent communication connections.
Redundant Network Operation and Architecture
The Series E module features dual BNC connectors to interface directly with redundant coaxial ControlNet trunk lines at a standard data transfer rate of 5 Mbps. This dual-port architecture ensures continuous network uptime by allowing automatic media failover should one coaxial cable segment experience a fault or signal degradation.
System Power and Thermal Performance
Engineered for installation in any standard 1756 ControlLogix chassis, the 1756-CNBR/E draws operational power directly from the backplane. The module features an optimized power dissipation rating of 5.1 Watts, minimizing thermal loading within the local controller rack.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Model | 1756-CNBR/E |
| Series | Series E |
| Product Line | ControlLogix |
| Module Type | ControlNet Redundant Bridge Module |
| Configuration | Redundant |
| ControlNet Communication Rate | 5 Mbps |
| Logix Communication Connections | 40 to 48 |
| Maximum Supported Connections | 64 |
| Maximum Nodes | 99 |
| Power Dissipation | 5.1 W |
| Weight | 0.293 kg (0.65 lbs) |
| Shipping Weight | 1.5 kg (3.3 lbs) |
Frequently Asked Questions
Q: What is the primary difference between the 1756-CNB and 1756-CNBR/E modules? A: The "R" designation signifies built-in support for redundant ControlNet media topologies via two physical BNC ports, enabling automatic channel failover.
Q: How many communication connections does the 1756-CNBR/E module support? A: It supports 40 to 48 Logix connections and a total maximum of 64 communication connections across up to 99 ControlNet nodes.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson