Product Summary
The 1771-ASB is a Universal Remote I/O Adapter for the PLC 5 family. It interfaces I/O modules with a controller over a remote link. This module reduces wiring costs by placing I/O closer to sensors and actuators. It supports data rates from 57.6 Kbps up to 230 Kbps. Its robust design ensures reliable operation in harsh industrial environments.
Why Choose the Allen-Bradley 1771-ASB for Your Network?
The 1771-ASB is a critical interface for your Remote I/O network. It responds directly to requests from a Remote I/O scanner. This adapter eliminates the need for lengthy, complex wiring runs. It significantly reduces both startup and ongoing maintenance costs. The module communicates over a daisy-chain topology for efficient data flow. You can connect up to 32 I/O adapter devices on the same link. This flexibility allows for extensive system scaling without adding complexity.
Step-by-Step Installation Guide for the 1771-ASB Module
You must mount this module in the left-most slot of a 1771 chassis. It requires a dedicated remote I/O adapter port for proper connection. Use Belden 9463 cable, also known as Belden Blue Hose, for wiring. The network segment needs a terminating resistor at each end. Use an 82 Ohm resistor for enhanced RIO networks. Older configurations may require a 150 Ohm resistor instead. The module supports 4, 8, 12, 16, or 32-slot I/O chassis configurations. It also allows for 1 and 2-slot I/O addressing to fit your system.
Speed, Distance, and Diagnostics Explained
The 1771-ASB delivers faster backplane scanning and data transmission. It can communicate over distances up to 10,000 feet at 57.6 K baud. For higher speeds, it transmits data up to 2,500 feet at 230.4 K baud. This high-speed performance improves overall system scan times. The module features three key diagnostic LEDs for easy troubleshooting. The ACTIVE LED glows green for normal operation status. The ADAPTER FAULT and I/O RACK FAULT LEDs indicate specific issues. This enhanced diagnostics feature eases maintenance and reduces downtime significantly.
Technical Specifications for Your Project
The 1771-ASB draws a backplane current of 1.0 Amps at 5 Volts DC. Its maximum power dissipation is only 5.2 Watts. The module operates within a temperature range of 0°C to 60°C. It can be stored safely in temperatures from -40°C to +85°C. The unit supports serial communication and reads data in parallel form. It requires a 1771-WB wiring arm for field connections. The module weighs just 1.9 pounds (0.9 kilograms) for easy handling.
Certifications and Industrial Compliance
The 1771-ASB holds multiple certifications for global industrial use. It is UL Listed and CSA certified for safety standards. The module meets Class I, Division 2 requirements for hazardous locations. It is also CE compliant and Marine Certified for various applications. The C-tick mark confirms its adherence to applicable EMC directives. These certifications ensure reliable performance in demanding environments worldwide.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-ASB Remote I/O Adapter Module
- Field wiring arm (1771-WB) for secure connections
- Appropriate terminating resistors (82 Ohm or 150 Ohm)
- You can arrange express delivery shipping via FedEx, UPS, and DHL.
