Description
💡 Product Introduction The Allen Bradley 1756-CN2RXT is a high-performance ControlNet bridge module belonging to the ControlLogix Extreme Environment (XT) series. It is specifically engineered to operate reliably in harsh industrial conditions characterized by extreme temperatures, vibration, and corrosive atmospheres, providing seamless redundant communication and robust data integration across distributed control systems.
📊 Product Parameters
- 🔌 Module Type: ControlNet Bridge Module, Redundant (XT)
- 📦 Product Family: Allen Bradley ControlLogix (1756)
- ⚡ Current Consumption (5V DC): 1.2 A
- 🔋 Current Consumption (24V DC): 130 mA
- 💡 Power Dissipation: 3.5 W
- 📏 Dimensions: Standard ControlLogix double-slot form factor (approx. 11.2 cm x 3.5 cm x 14.5 cm)
- ⚖️ Weight: Approximately 0.28 kg (0.62 lbs)
- 🌍 Country of Origin: United States
- 🌡️ Operating Temperature Range: -25°C to +70°C (-13°F to +158°F)
- 🛡️ Conformal Coating: Yes (Enhanced protection for harsh environments)
🛠️ Product Instructions
- Safety First: Always power down the ControlLogix chassis before inserting or removing the module to prevent electrical damage or system faults.
- Chassis Installation: Align the module with the guide rails of any available slot in the chassis and push firmly until the top and bottom latches click into place.
- Cabling: Attach the ControlNet coaxial cables to the dual BNC connectors (Channel A and Channel B) to establish secure network links.
- Software Configuration: Open Studio 5000 Logix Designer to configure network parameters, node addresses, and Network Update Times (NUT).
- Status Monitoring: Observe the LED status indicators on the front panel (OK, CH A, CH B, NET) to verify operational health and network communication status.
❓ Common Questions (Q&A)
- Q: What makes the 1756-CN2RXT different from the standard 1756-CN2R? A: The “XT” suffix denotes extreme environment compliance. It features advanced conformal coating and component ratings designed to withstand severe temperatures, humidity, and corrosive gases that standard modules cannot handle.
- Q: Does this module support media redundancy? A: Yes, it features dual physical media channels (Channel A and Channel B) to support redundant ControlNet cable setups, ensuring continuous communication even if one cable fails.
- Q: Which programming environment is required? A: The module is configured and managed using Studio 5000 Logix Designer or RSLogix 5000 software integrated with your Logix controller project.
Allen Bradley ControlLogix 1756 | Alternative Series Models Overview
💡 Series Introduction
The Allen-Bradley ControlLogix 1756 platform offers a comprehensive suite of modular components designed for high-availability automation, scalable control, and extreme environment operation. Below are 10 alternative series models and controller options within the same ecosystem that complement industrial communication modules like the 1756-CN2RXT.
📊 Recommended Series Models
- 🧠 1756-L73: Standard ControlLogix 5570 programmable automation controller featuring 8 MB of user memory for mid-to-large applications.
- 🛡️ 1756-L73XT: Extreme environment version of the 5570 controller equipped with conformal coating for harsh operating temperatures (-25°C to +70°C).
- 🧠 1756-L81E: High-performance ControlLogix 5580 controller featuring integrated 1 Gb/s EtherNet/IP port and 3 MB of memory.
- 🔄 1756-RM2: ControlLogix controller redundancy module used to synchronize primary and secondary chassis for fault-tolerant architectures.
- ⚡ 1756-PA75: Standard AC power supply module (120/240V AC input) providing robust power distribution across the chassis backplane.
- ⚡ 1756-PBXT: Extreme environment DC power supply (24V DC input) designed with conformal coating for rugged and corrosive industrial sites.
- 🌐 1756-EN2TR: Dual-port EtherNet/IP communication bridge module supporting ring topologies (Device Level Ring) for resilient network architectures.
- 🔌 1756-IA16: 16-point standard AC digital input module (120V AC) designed for sensing discrete field signals.
- 🔌 1756-OW16I: 16-point individually isolated normally-open relay output module for handling diverse load voltages.
- 📈 1756-IF8: 8-channel analog input module supporting voltage, current, and thermocouple measurements for precise process data acquisition.
🛠️ Selection Guidance
- System Matching: Ensure all chosen modules share compatible series designations (such as XT variants) if your application requires deployment in hazardous, high-temperature, or corrosive locations.
- Chassis Allocation: All listed 1756 modules mount directly into standard ControlLogix chassis slots and interface seamlessly via the standard producer/consumer backplane.
