Yokogawa AMN31 + AMM12T
Product Introduction: A high-performance I/O module combination for Yokogawa’s CENTUM VP DCS and FA-M3 PLC systems. The AMN31 serves as a robust terminal base, while the AMM12T provides multi-channel analog voltage signal multiplexing for reliable data acquisition.
Technical Specifications (AMN31 Base Unit):
- Channels: 16 analog input channels
- Input Types: 4-20 mA, 0-20 mA, 0-5 V, 1-5 V
- Accuracy: ±0.05% of full scale
Detailed content
- Isolation: Fully isolated channel-to-channel and channel-to-ground
- Operating Temp: -10°C to +55°C
- Storage Temp: -40°C to +85°C
- Power Consumption: Max 5 W
- Dimensions: 144 × 129 × 100 mm (W×H×D)
- Weight: Approx. 1.5 kg
- Mounting: DIN rail mount
- Protection: IP20 (front panel)
- Compliance: IEC 61508 SIL 2, EN 61000-6-2/-6-4
Technical Specifications (AMM12T Multiplexer):
- Type: Voltage input multiplexer module (S2 revision)
- Input Channels: Multi-channel high-density voltage inputs
- Signal Handling: Fast scanning and multiplexing for centralized data acquisition
- Compatibility: Directly interfaces with AMN31 base and Yokogawa control systems
- Application: For use in CENTUM VP DCS and FA-M3 PLC distributed I/O systems
Key Features:
- High-Density I/O: Maximizes channel count in limited cabinet space
- Signal Isolation: Prevents ground loops and cross-talk between signals
- SIL 2 Rated: Suitable for safety-related control applications
- Easy Configuration: Configurable via Yokogawa system software (e.g., FieldMate)
- Robust Construction: Industrial-grade design for harsh plant environments
Applications:
- Process monitoring and control in refineries and petrochemical plants
- Power generation (thermal, hydro, renewable)
- Steel and metal processing
- Water treatment and distribution
- Pharmaceutical and fine chemical manufacturing












