ABB NTAI05 Symphony Harmony INFI 90 Analog Input Termination Unit
Product Overview
The ABB NTAI05 is a high-performance Analog Input Termination Unit (TU) engineered for the Symphony Harmony and INFI 90 distributed control systems (DCS). It serves as the physical bridge between field instrumentation and the system’s analog input modules (such as the IMASI23). Designed to handle 16 independent channels, the NTAI05 facilitates the acquisition of high-level analog signals including 4-20 mA current loops and 0-10 VDC voltage signals. This unit is critical for translating environmental variables like temperature, pressure, and flow into digital data for the controller. With dual power redundancy and robust electrical isolation, it is optimized for mission-critical automation in power generation and heavy industrial processing.
Technical Specifications
The following technical parameters define the performance and environmental limits of the NTAI05:
| Parameter | Specification Details |
| Model Number | NTAI05 |
| Manufacturer | ABB (Bailey Controls) |
| Product Series | Symphony Harmony / INFI 90 |
| Number of Channels | 16 Analog Input Channels |
| Supported Input Signals | 4-20 mA, 0-10 V, 1-5 V |
| Measurement Accuracy | 0.1% of Full Scale |
| Operating Voltage | 24 VDC (Typical), Supports 9-36 VDC Range |
| Redundancy | Supports Dual Power Supply Redundant Input |
| Power Consumption | < 4 W (Maximum Current 0.2A) |
| Voltage Isolation | 1500 VDC to 2000 V RMS |
| Installation | 35mm DIN Rail or Rack Mount |
| Dimensions (WxHxD) | 215.9 mm x 233.68 mm x 78.74 mm |
| Operating Temp | -40 °C to +85 °C (Extreme Range) |
| Protection Grade | IP20 |
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