Allen-Bradley 1771-NOC Isolated Analog Module

The Allen-Bradley 1771-NOC is an eight‑channel High Resolution Isolated Analog Output Module for the PLC‑5 family. It provides eight independent current outputs (4–20 mA) with galvanic isolation between channels and from the backplane, enabling precise control of multiple process loops while protecting the controller. This module is designed to plug into a PLC‑5 1771 I/O rack and is compatible with optional wiring options such as Remote Termination Panel interfaces, delivering high‑resolution DAC performance for accurate current control. The isolation rating supports up to 1000 V DC continuous between channels and the backplane, helping suppress ground loops and improve ruggedness in demanding environments.