Description
YOKOGAWA NFAI143-H00
1. Basic Information
YOKOGAWA NFAI143-H00 is a high-performance universal analog input module (AI) for FCN/FCJ controllers and CENTUM DCS systems. It supports multi-type signal acquisition including current, voltage, thermocouple and RTD signals, and is equipped with built-in HART communication function. With high precision and strong anti-interference capability, it is widely used for process parameter monitoring and automatic control in process industries.
Adopting industrial low-power hardware design, the module integrates AD conversion, digital filtering, cold junction compensation and fault diagnosis functions. It supports both DIN rail and rack mounting, and is suitable for new system construction, equipment complete sets and legacy system renovation and expansion scenarios.
2. Core Technical Specifications
2.1 Channel & Signal Specifications
- Model: NFAI143-H00, Type: Universal Multi-function Analog Input Module
- Compatible System: YOKOGAWA FCN/FCJ Controller, CENTUM DCS Series
- Input Signals: 4～20mA / 0～20mA current, DC voltage, thermocouple, RTD
- Protocol Support: Built-in HART protocol for smart transmitter data interaction
- Accuracy: 0.1%FS full-scale high precision
- Diagnosis Function: Wire break, short circuit and over-range fault detection
- Signal Processing: Linear calibration, digital filtering and cold junction compensation
2.2 Electrical Parameters
- Power Supply Range: 12～36VDC (24VDC±10% standard)
- 24VDC Power Consumption: ≤540mA current, ≤15W max power
- 5VDC Backplane Current: ≤230mA
- Protection Design: Overvoltage, overcurrent, surge and ESD protection
- Isolation Performance: Electrical isolation between channels and system circuit
- Communication Feature: Simultaneous transmission of analog and HART digital signals
2.3 Environmental & Physical Parameters
- Operating Temperature: -10℃～+70℃
- Storage Temperature: -20℃～+85℃
- Humidity Range: 5%～95%RH (Non-condensing)
- EMC Performance: High-grade anti-electromagnetic interference design
- Vibration Resistance: Industrial reinforced structure for stable operation
- Protection Grade: IP20 (Front Panel)
- Installation Method: DIN Rail / Standard Rack Mounting
- Weight: Approx. 150g
3. Main Features
- Universal Multi-signal Compatibility: Supports current, voltage, thermocouple and RTD signals in one module, simplifying hardware configuration and spare part management.
- 0.1%FS High Precision Acquisition: Ensures long-term stable and accurate collection of process parameters with low temperature drift and high linearity.
- Built-in HART Intelligent Communication: Realizes two-way data interaction with HART smart transmitters, supporting equipment diagnosis, parameter reading and remote maintenance.
- Full-range Self-diagnosis: Automatically detects wire break, short circuit and hardware faults, providing complete fault logs for rapid troubleshooting.
- Strong Anti-interference Capability: Electrical isolation and multi-stage filtering eliminate field electromagnetic interference and signal fluctuation.
- Flexible Software Configuration: Supports online modification of signal type, range and filter parameters without hardware replacement.
4. Typical Applications
4.1 Process Industry Parameter Monitoring
Collects temperature, pressure, flow and liquid level parameters of reactors, distillation towers and heating furnaces in petrochemical and chemical industries, supporting closed-loop control and interlock logic operation.
4.2 Power & Energy Industry Control
Used in thermal power and cogeneration control systems for accurate signal acquisition of boilers, turbines and auxiliary equipment to ensure stable unit operation.
4.3 HART Smart Instrument Networking
Integrates analog acquisition and digital diagnosis functions for HART transmitters, realizing intelligent equipment management and on-site state monitoring without additional communication cards.
4.4 Complete Set & Automatic Equipment
Serves as the core analog acquisition unit for environmental protection, water treatment and HVAC automatic equipment, realizing real-time process monitoring and automatic regulation.
4.5 Legacy System Upgrade & Replacement
Directly replaces aging faulty modules of Yokogawa FCN/CENTUM systems, realizing low-cost system expansion and performance restoration without wiring and configuration modification.
