Product Description

Precision Analog Signal Acquisition Overview

The AMM12 (Model: AMM12) is a high-reliability analog input multiplexer module engineered for the Yokogawa CENTUM VP and CS 3000 Distributed Control Systems (DCS). Operating within the Field I/O (FIO) subsystem, the AMM12 (Part Number: AMM12) facilitates the high-precision acquisition of up to 16 analog channels. While optimized for standard 4–20 mA current loops, its multiplexing architecture is designed to handle voltage-based inputs from diverse field transmitters, including pressure sensors, flow meters, and analytical instruments. This module serves as a critical interface in industrial environments, providing the necessary signal isolation and digitization required for stable process control.

Detailed Technical Specifications

The AMM12 (AMM12) is designed to maintain signal integrity in high-density rack configurations.

• Manufacturer: Yokogawa Electric Corporation

• Model Number: AMM12

• Product Type: Analog Input Multiplexer Module

• System Family: CENTUM VP / CS 3000 (FIO Subsystem)

• Number of Channels: 16 Isolated Analog Inputs

• Signal Support: 4–20 mA DC / 1–5 V DC (Voltage signals)

• Input Resistance: 250 Ω (for current signals)

• Conversion Accuracy: ±0.1% of full scale

• Signal Resolution: 12-bit to 16-bit (Configuration dependent)

• Isolation Protection: Galvanic isolation between field side and system backplane

• Withstanding Voltage: 1500 V AC between field and system (for 1 minute)

• Diagnostic Capabilities: Open-circuit detection, short-circuit monitoring, and signal quality flags

• Data Update Rate: Synchronized with FIO bus scan cycles

• Current Consumption: Typical 250 mA at 5 V DC

• Operating Temperature: 0°C to +60°C (32°F to 140°F)

• Dimensions: 2.5 x 22.9 x 7.6 cm (1.0 x 9.0 x 3.0 inches)

• Weight: 0.14 kg (5.0 oz)