Allen Bradley 1756-EN3TR | ControlLogix Ethernet Communication Module

Product Overview

The Allen Bradley 1756-EN3TR is a ControlLogix Ethernet communication module designed as an I/P bridge for industrial automation networks. It supports two 10/100 Mbps RJ-45 ports and one USB port, enabling versatile connectivity for control systems.

This module manages up to 128 CIP motion axes and 256 Logix connections, offering real-time I/O messaging for complex automation processes. Its embedded switch technology allows linear, star, and device-level ring (DLR) network topologies, enhancing network reliability.

The 1756-EN3TR mounts in any 1756 chassis slot and draws 1 A at 5.1 VDC and 3 mA at 24 VDC from the backplane. Its open enclosure design and 32–140°F (0–60°C) operating temperature make it suitable for industrial environments.

With a maximum power consumption of 5.1 W and thermal dissipation of 17.4 BTU/hr, the module balances performance with energy efficiency. Its insulation voltage of 30 VDC ensures safe operation under typical industrial conditions.

Key Features

• Supports two Ethernet ports (10/100 Mbps) and one USB port (12 Mbps).

• Embedded switch technology for linear, star, and DLR topologies.

• Controls up to 128 CIP motion axes and 256 Logix connections.

• Mounts in any 1756 chassis slot, compatible with 1756-A4 to A17 models.

• Backplane current: 1 A at 5 VDC, 3 mA at 24 VDC.

• Power consumption: 5.1 W; thermal dissipation: 17.4 BTU/hr.

• Open enclosure design with 30 VDC insulation voltage.

• Operating temperature: 0–60°C (32–140°F).

• Supports integrated motion control and EtherNet/IP protocol.

Technical Specifications

Industrial Applications

The Allen Bradley 1756-EN3TR module is ideal for industrial Ethernet networks requiring robust communication. It integrates seamlessly with ControlLogix systems, supporting high-speed I/O, motion control, and complex automation processes.

FAQ

Q1: Is the Allen Bradley 1756-EN3TR brand new and original?
Yes, we provide brand new original Allen Bradley ControlLogix modules.

Q2: Is the 1756-EN3TR available for immediate shipment?
Yes, inventory is ready and usually ships within 3 days to 2 weeks depending on order size.

Q3: What communication protocols are supported?
It supports EtherNet/IP, linear, star, and device-level ring (DLR) topologies.

Q4: How many motion axes can the module control?
It supports up to 128 CIP motion axes and 256 Logix connections.

Q5: Can the module be installed in any ControlLogix chassis?
Yes, it mounts in any 1756 chassis slot.

Q6: What is the operating temperature range?
The module operates reliably from 0–60°C (32–140°F).