Allen Bradley 1734-AENTR/B

Brand: Allen Bradley
Model: 1734-AENTR/B

Inventory situation: Goods are available in stock.

Product features

The Allen Bradley 1734-AENTR/B is a high-quality dual-port EtherNet/IP communication adapter designed exclusively for Rockwell Automation's POINT I/O platform. This Allen Bradley 1734-AENTR/B adapter may operate in half-duplex or full-duplex mode and supports Ethernet speeds of 10Mbps and 100Mbps. Its dual RJ-45 ports support variable network topologies such as daisy chain, star, or tree configurations, which helps to reduce wiring complexity in industrial sites. Users can simply configure the device's IP address using a three-position thumbwheel switch (range from 001 to 254), DHCP server, or non-volatile memory, making it ideal for on-site setting.

The Allen Bradley 1734-AENTR/B is powered by a 10~28.8V DC input (rated at 24V DC) and has a maximum input current of 10A. The device offers a 10–28.8V DC field power output (max 9A) and a 5V DC POINTBus output (max 0.8A), ensuring a steady power supply for attached I/O modules. This adapter meets industrial safety standards by providing reverse polarity protection and 50V DC continuous isolation (tested at 500V AC for 60 seconds). It also decreases the danger of electrical fault damage.

The Allen Bradley 1734-AENTR/B excels at I/O extension, supporting up to 63 POINT I/O modules, 31 direct connections, or 5 rack-optimized connections (for digital modules only), for a total I/O point limit of 504. It is compatible with Series C POINT I/O modules and works flawlessly with Rockwell Automation's ControlLogix systems, making it an excellent solution for upgrading or expanding industrial control systems. Furthermore, it facilitates hot-swapping (with adequate safety precautions in hazardous places), which reduces downtime during maintenance.

Specifications

Model	1734-AENTR/B
Product Type	POINT I/O Dual-Port EtherNet/IP Communication Adapter
Communication Protocol	EtherNet/IP
Rated Input Voltage	24V DC
Input Voltage Range	10~28.8V DC
Maximum Input Current	10A
Number of Ports	2 x RJ-45
Communication Rate	10/100 Mbps

Precautions

First, when installing the Allen Bradley 1734-AENTR/B, always utilize the standard DIN rail recommended by Rockwell Automation. Avoid putting the 1734-AENTR/B in areas with significant vibrations, heavy dust, or direct exposure to water or condensation-because the adapter has an open design (no exterior case), these conditions might cause electrical problems or limit its lifespan. To preserve the adapter's performance, verify that the installation area meets the pollution grade 2 requirements for industrial situations.

Second, ensure that the Allen Bradley 1734-AENTR/B's power supply is safe. Connecting the adapter to a voltage higher than 28.8V DC can cause internal components to burn out. Keep the voltage between 10 and 28.8V DC. Always check the power polarity before wiring-even though the Allen Bradley 1734-AENTR/B features reverse polarity protection, faulty wiring for an extended length of time can harm this safety feature. Also, do not exceed the maximum input current of 10A or the field power output current of 9A, since overloading might cause overheating or power failures in the POINT I/O system.

To configure the Allen Bradley 1734-AENTR/B network, use the 3-position thumbwheel switch, DHCP server, or non-volatile memory to assign a unique IP address. Avoid using multiple IP addresses on the same EtherNet/IP network, since this will result in communication conflicts and prohibit the adapter from connecting to control systems such as ControlLogix. When using daisy chain or star topologies, make sure your Ethernet cables are industrial-grade and properly connected to the RJ-45 ports; slack or low-quality cables can cause inconsistent connections or data loss. Also, do not change the adapter's network settings while it is actively transmitting data, since this may interfere with POINTBus connection with attached I/O modules.

FAQ

Q: What is the Allen-Bradley 1734-AENTR/B, and what is its primary function?

A: The 1734-AENTR/B is a dual-port EtherNet/IP adapter module for the Allen-Bradley POINT I/O platform. It acts as a communication gateway between your Logix controller (such as ControlLogix or CompactLogix) and up to 63 POINT I/O modules (digital, analog, safety, or special purpose) on the local bus. The module's distinguishing feature is its two integrated Ethernet ports, which enable it to be wired in linear, star, tree, or, most crucially, fault-tolerant ring (DLR) network topologies. This makes it an essential component for developing durable, modern machine-level networks.

Q: Can the 1734-AENTR/B be used for safety applications?

A: The 1734-AENTR/B is a standard, non-safety communication adapter. The POINT I/O platform has a specialized line named POINT Guard I/O™. You can connect 1734 Point Guard safety I/O modules (such as digital safety input/output modules) to the same POINTBus. These safety modules connect to a compatible GuardLogix™ safety controller using the CIP Safety™ protocol on the same EtherNet/IP network. The AENTR/B adapter transmits this safety-rated data over its usual network connection.