Allen-Bradley 1485T-P2T5-T5 DeviceNet PowerTap for Thick Round Media

Product Functionality

The 1485T-P2T5-T5 is a specialized DeviceNet PowerTap designed to inject 24V DC power into a DeviceNet network trunk line. This component is essential for large-scale industrial networks utilizing thick round cable media, ensuring that voltage levels remain stable across long distances and multiple nodes. It features a dual-port configuration that allows for seamless power distribution while maintaining the integrity of the data signals. By utilizing a terminal strip and cable gland design, the 1485T-P2T5-T5 provides a secure, industrial-grade connection point that prevents accidental disconnection and environmental contamination.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: 1485T-P2T5-T5

• Component Type: PowerTap (T-Port)

• Network Compatibility: DeviceNet

• Media Support: Thick Round Cable

• Input Voltage: 24V DC

• Current Rating: 15 Amps maximum

• Port Configuration: 2-Port Output

• Connection Method: Internal Terminal Strip with Cable Gland entry

• Connector Keying: Standard Key Location

• Enclosure Style: Sealed Industrial Housing

• Physical Protection: Built-in fuse protection (depending on regional safety standards)

• Installation: Inline mounting for trunk line power insertion

Network Integration and Use Case

In a standard DeviceNet architecture, the 1485T-P2T5-T5 serves as the primary junction where the external power supply meets the thick backbone cable. The use of thick media allows for higher current carrying capacity compared to thin media, making this PowerTap ideal for heavy-duty manufacturing environments. The internal terminal strip design is specifically chosen for high-vibration applications where M12 or M18 quick-disconnects might be insufficient. It ensures a low-resistance path for the 15A current, reducing voltage drop at the furthest ends of the network.

Frequently Asked Questions

Does the 1485T-P2T5-T5 support data termination?No, this module is strictly for power injection. A separate 121-ohm resistor must be placed at the physical ends of the trunk line for data signal termination.

Can I use this with Thin Round Cable?The 1485T-P2T5-T5 is specifically sized for thick round cable glands. While electrical connections are similar, the physical seal and cable strain relief are optimized for thick media (Thicknet).

What is the advantage of the 15A rating over standard taps?The 15 Amp capacity allows for a larger number of high-draw nodes (such as large solenoid valves or sensors) to be powered from a single injection point without overheating the conductors or causing significant voltage sag.