Yokogawa S9211AQ-0 Multipoint Analog Control Board

The Yokogawa VM1D Multipoint Analog Control Board (AS S9211AQ-0) is a rack‑mounted Analog I/O Module for Yokogawa VM1‑series DCS/PLC systems, designed to handle multiple analog input and output signals in industrial control loops. It supports common signal types such as 4–20 mA and 0–10 V, provides both input and output channels, and can be configured in dual‑redundant setups for enhanced reliability. HART-enabled communication is model-dependent, and the board remains compatible with Yokogawa DCS/PLC platforms, enabling real‑time monitoring and control of process variables including temperature, pressure, flow, and level in applications like chemical processing, power generation, and manufacturing. The module is a rugged, industrial‑grade PCB weighing approximately 0.6–0.8 kg and is installed in control system racks. Common replacements include Yokogawa VM2 Multipoint Analog I/O Card, VM4 Analog Output Card, and MAC2 Analog Control I/O Module.