Description
The Allen-Bradley 1756-EN2TRK is a high-performance, conformal-coated EtherNet/IP communication module designed for the ControlLogix platform. This module provides critical network connectivity for industrial control systems, offering enhanced protection against harsh environmental conditions. By integrating dual-port technology, it supports advanced network topologies, including Device Level Ring (DLR), which significantly improves system resilience and fault tolerance in demanding automation environments.
Features
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Conformal Coating: Factory-applied protective layer guards internal circuitry against humidity, corrosive gases, and airborne contaminants.
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Dual-Port Architecture: Two RJ45 Ethernet ports facilitate linear, star, and DLR network configurations without the need for external switches.
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DLR Support: Enables high-availability network communication, preventing total system loss in the event of a single-cable break.
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Diagnostics: Includes a dedicated USB port for local configuration and diagnostic troubleshooting.
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Seamless Integration: Designed for standard ControlLogix chassis installation, occupying a single slot.
Applications
This module is ideal for deployment in corrosive or high-moisture industrial settings, such as chemical processing, water and wastewater treatment plants, and large-scale mining infrastructure where standard electronic components may face premature degradation.
Technical Specifications
| Model |
1756-EN2TRK |
| Communication Rate |
10/100 Mbps (Auto-negotiating) |
| Power Consumption |
5.1 W |
| Backplane Current |
1.0 A @ 5.0 VDC; 3 mA @ 24 VDC |
| Thermal Dissipation |
21.28 BTU/hr |
| Operating Temperature |
0 to 60 deg C (32 to 140 deg F) |
| Humidity |
5% to 95% (Non-condensing) |
| Isolation Voltage |
30 V (Basic insulation) |
Installation Guidelines
- Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical damage.
- Verify the module is fully seated and the top/bottom retaining latches are locked.
- Use shielded twisted-pair cabling for Ethernet connections to minimize EMI in high-noise environments.
- Maintain proper ventilation in the cabinet to ensure the ambient temperature remains within the specified 0 to 60 deg C range.
- Handle with care to avoid damaging the conformal coating on the internal boards.
FAQ
Q: Does the 1756-EN2TRK require a specific chassis slot?
A: No, this module can be installed in any available slot within a standard ControlLogix chassis.
Q: Can this module be used in a standard star topology?
A: Yes, the dual RJ45 ports support star, linear, and DLR network topologies.
Q: What is the primary advantage of the 'K' suffix in this part number?
A: The 'K' denotes the factory-applied conformal coating, which provides essential protection against harsh, corrosive, or humid environments.
