Product Summary
The 1771-ASB serves as a critical interface between your controller and remote I/O modules. This Allen-Bradley module reduces installation costs by placing I/O closer to field devices. It supports fast data transmission up to 230.4 kbps over long distances.
Product Procurement & Buyer Guide
The 1771-ASB is a universal remote I/O adapter from Rockwell Automation. It belongs to the proven PLC-5 product family for industrial control. This module directly interfaces with a 1771 I/O chassis. It connects to a processor via a remote I/O scanner port. Use this adapter to avoid expensive direct wiring methods. It effectively lowers your startup, installation, and maintenance expenses.
This module supports communication rates of 57.6 kbps, 115 kbps, and 230 kbps. You can achieve a cable length of 10,000 feet at 57.6 kbps. Faster data transmission reaches up to 2,500 feet at 230.4 kbps. This flexibility allows you to optimize your network design. The adapter works with 4, 8, 12, 16, or 32-slot chassis. It supports both 1-slot and 2-slot I/O addressing schemes. This feature provides significant I/O image space savings.
The 1771-ASB module requires specific hardware for correct operation. You must use a Belden 9463 cable for the RIO network. It needs either an 82 Ohm or 150 Ohm terminating resistor. Use 150 Ohms for older network configurations. Use 82 Ohms for enhanced RIO network versions. The module mounts in the left-most slot of the chassis. It draws a backplane current of 1.0 Amps at 5 Volts DC. The unit weighs only 1.9 pounds for easy handling.
Installation & Deployment Guide
Proper installation of the 1771-ASB ensures reliable system performance. First, mount the module in the left-most slot of the 1771 chassis. This position is critical for proper backplane communication. Next, connect the 1770-CD Belden 9463 cable to the wiring arm. The module uses a 1771-WB field wiring arm connector. Ensure the lower connector keying is set between 16 and 18.
The RIO network uses a daisy-chain topology for communication. You must install a terminating resistor at each end point. This practice closes the network segment correctly. The module provides three diagnostic LED indicators for status. The ACTIVE LED must show a steady green light. This indicates normal operation of the adapter module. The ADAPTER FAULT and I/O RACK FAULT LEDs help with troubleshooting.
The 1771-ASB operates within a temperature range of 32°F to 140°F. It can survive storage temperatures from -40°F to +185°F. The module handles humidity levels from 5% to 95% non-condensing. It meets NEMA standard ICS 2-230 for noise immunity. These specifications ensure reliable operation in harsh environments. The adapter is UL Listed and CSA certified for safety. It also holds Class I, Division 2 certification for hazardous locations. This makes it suitable for demanding industrial applications.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-ASB Remote I/O Adapter Module
- One 1771-WB Field Wiring Arm Connector
- Product documentation and setup guide
Express delivery shipping is available via FedEx, UPS, and DHL.
