Product Summary
The Allen‑Bradley 1734-EXT3 is a 3‑meter POINTBus extension cable for POINT I/O systems. Its open‑style connectors simplify in‑cabinet wiring and support modular expansion. This cable helps you build cost‑effective control architectures with up to 504 channels per node.
Product Procurement & Buyer Guide
Why Choose the 1734-EXT3 for Your POINT I/O System
The 1734-EXT3 connects I/O modules to adapters within a single node. This cable measures exactly 3 meters in length, providing a reliable link between components. It supports the RIUP feature, so you can insert or remove modules while power remains applied. That reduces downtime during maintenance or reconfiguration.
Key Technical Specifications for Procurement
Buyers must verify cable length and connector type. The 1734-EXT3 uses open‑style connectors at both ends, allowing straightforward field‑wiring. It works with 1794 modular POINT I/O hardware. The cable is rated for in‑cabinet use only. Check your system layout to confirm 3 meters suits your cabinet depth.
Compatibility and System Scalability
This cable is compatible with all POINT I/O adapters, including DeviceNet, Ethernet/IP, ControlNet, and Profibus. It supports up to 63 I/O modules per node, for a total of 504 channels. You can mix analog, digital, RTD, AC/DC, specialty, and thermocouple modules. The 1734-EXT3 allows you to extend the POINTBus within a single cabinet without custom wiring.
Installation Guide
Step‑by‑Step Physical Mounting
First, mount the terminal base units on the DIN rail. Then insert the I/O modules into the bases. Connect the 1734-EXT3 cable from the adapter to the first module group. Ensure both connectors snap fully into place. Do not route the cable near high‑voltage lines to avoid noise.
Connection and Power‑Up Sequence
After all cables are seated, apply 24V DC power to the system. The POINT I/O will automatically detect modules on the bus. Use the RIUP feature to hot‑swap modules if needed. Test the link by checking adapter status LEDs. The 1734-EXT3 ensures a stable communication path within the 3‑meter reach.
Best Practices for Low‑Cost Operation
The POINT I/O system is designed for low cost of ownership. Using the 1734-EXT3 eliminates the need for expensive custom cables. Plan your node layout to keep all modules within the 3‑meter span. This reduces material waste and simplifies future changes.
