
Product Description
ABB NTU-7UO Isolated Analog Output Module - Precision Control for Industrial DCS
The ABB NTU-7UO is an advanced isolated analog output module engineered for seamless integration within ABB Bailey Infi 90 and Net 90 distributed control systems. Featuring 14 independently isolated output channels, this module delivers exceptional signal integrity and noise immunity critical for demanding industrial process control applications.
Technical Specifications
- Output Channels: 14 isolated analog outputs
- Signal Isolation: Channel-to-channel and channel-to-ground isolation
- Output Range: Configurable 4-20mA or 0-10V DC
- Resolution: 12-bit digital-to-analog conversion
- Accuracy: ±0.1% of full scale
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Power Supply: 24V DC from DCS backplane
- Compatibility: ABB Bailey Infi 90, Net 90 systems
Application Scenarios
The NTU-7UO excels in process industries requiring precise analog control signals. Deploy this module for valve positioning in chemical reactors, speed control of variable frequency drives, temperature regulation in pharmaceutical manufacturing, or flow control in water treatment facilities. Its isolated architecture prevents ground loops and ensures reliable operation in electrically noisy industrial environments.
Engineering Solutions
This module addresses critical challenges in distributed control architectures. The galvanic isolation between channels eliminates cross-talk and protects sensitive field devices from electrical transients. Hot-swappable design enables maintenance without system shutdown, while diagnostic LEDs provide real-time status monitoring. Integrated overvoltage and short-circuit protection safeguards both the module and connected instrumentation.
Integration Benefits
Seamless configuration through ABB Control Builder software streamlines commissioning and reduces engineering time. The module auto-detects upon installation and supports online calibration without process interruption. Backward compatibility with legacy Infi 90 systems protects existing infrastructure investments while enabling incremental modernization.
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