ALLEN BRADLEY 1756-CNB/E ControlNet Adapter

AVAILABLE IN STOCK

Part number: 1756-CNB/E
Brand: ALLEN BRADLEY
Product Type: ControlNet Adapter
Warranty: All the Parts has one year warranty *T&C
Stock Location: Nashik
In Stock Quantity:

At Anadi Automation, we offer brand new equipment backed by the Original Manufacturers Warranty.

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Opting for refurbished items can lead to significant savings compared to purchasing brand new ones. At Anadi Automation, all our refurbished spare parts come with a comprehensive 12-month warranty, ensuring your peace of mind.

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Alternative Names for 1756-CNB/E

Technical specifications for 1756-CNB/E

Allen-Bradley 1756-CNB/E – ControlNet Communication Bridge Module

The 1756-CNB/E is a ControlNet Bridge Communication Module from Allen-Bradley’s ControlLogix series. It facilitates high-speed, deterministic data transfer over a ControlNet network, supporting redundant and non-redundant configurations for industrial automation applications.

1. General Information

Manufacturer: Rockwell Automation (Allen-Bradley)
Model Number: 1756-CNB/E
Series: ControlLogix
Device Type: Communication Interface
Communication Interface Type: Bridge Module
Configuration: Supports redundant and non-redundant operation
Mounting Type: Chassis Mount
Mounting Location: 1756 ControlLogix Chassis

2. Electrical & Power Specifications

Backplane Current Consumption:
- 970 mA @ 5.1V DC
- 1.7 mA @ 24V DC
Power Dissipation: 5.14W
Thermal Dissipation: 17.5 BTU/hr

3. Communication & Connectivity

Network Type: ControlNet
ControlNet Communication Rate: 5 Mbps
Max Number of Nodes: 99
Maximum Supported Connections: 64
Communication Ports:
- 1 x BNC connector (for non-redundant media operation)
- 1 x NAP (RJ-45 8-pin with shield) connector
Cable Type: Quad shield RG-6 coaxial cable
Ground Isolation: Transformer-based
Wiring Category: Category 2 (on communication ports)

4. Physical & Environmental Specifications

Slot Width: 1 slot
Weight: 0.260 kg (0.57 lb)
Isolation Voltage:
- 50V continuous withstand rating
- Tested to 500V AC for 60 seconds
Diagnostic Features: Yes

5. Features & Benefits

✅ Reliable Network Communication – Enables high-speed data exchange over ControlNet
✅ Redundancy Support – Ensures fail-safe operation for critical applications
✅ Compact Design – Occupies only 1 slot in the ControlLogix chassis
✅ Supports up to 99 Nodes – Scalable for large industrial networks
✅ Flexible Wiring Options – BNC & RJ-45 connectors for easy installation
✅ Transformer-Based Isolation – Protects against voltage fluctuations

6. Applications

Industrial Automation & Process Control
PLC-to-PLC Communication
SCADA & Distributed Control Systems (DCS)
Motion Control & Robotics
Factory & Machine Control Networks

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