Product Overview

The AMM22M (Model: AMM22M) is a high-performance analog input module engineered for Yokogawa’s CENTUM VP and CS 3000 Distributed Control Systems (DCS). Operating within the Field I/O (FIO) subsystem, the AMM22M (Order Number: AMM22M) provides 16 channels of high-integrity acquisition for standard 4–20 mA DC process signals. The "M" suffix identifies this as a modified enhancement within the AMM22 series, specifically optimized for deeper diagnostic capabilities, increased hardware stability, and seamless synchronization with modern Vnet/IP control architectures.

Built for mission-critical reliability, the AMM22M (Part Number: AMM22M) utilizes comprehensive galvanic isolation between field-side wiring and the system backplane. This architectural safeguard prevents ground loops and shields the Field Control Station (FCS) from unpredictable electrical transients and noise. Its 16-channel density offers an ideal balance between cabinet space optimization and granular signal management, ensuring peak performance in petrochemical, power generation, and offshore oil and gas facilities.

Detailed Technical Specifications

The AMM22M provides high-precision data acquisition with the following technical parameters:

• Manufacturer: Yokogawa Electric Corporation

• Model Number: AMM22M

• Series Compatibility: CENTUM VP / CS 3000 (FIO Subsystem)

• Product Type: Analog Input Module (Modified Enhancement)

• Number of Channels: 16 channels, fully isolated

• Input Signal: 4–20 mA DC (Standard Process Signal)

• Input Resistance: 250 Ω (Precision internal shunt)

• A/D Resolution: 12 to 16-bit (Scan-period dependent)

• Measurement Accuracy: ±0.1% of full scale

• Isolation Voltage: 500 V AC between field terminals and system logic

• Data Refresh Rate: Fast sampling optimized for real-time control loops

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

• Mounting: Standard FIO Node Unit (ANB or ANL units)

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

• Dimensions (W x H x D): 32.8 × 107.5 × 130 mm

• Net Weight: 0.35 kg (0.77 lbs)

• Compliance: CE, ISO, IEC industrial automation standards