Overview
The Yokogawa NFAI135-S00 is a high-density analog input module engineered for reliable acquisition of standard current and voltage signals in Yokogawa control architectures. With sixteen input channels housed in a compact form factor, this module is designed to support stable process measurement in continuous and discrete control environments.
The NFAI135-S00 is optimized for 4–20 mA and 1–5 V DC signals commonly generated by industrial transmitters, providing consistent signal conversion for downstream control and monitoring functions. Its design supports redundant system configurations, making it suitable for applications where availability and continuity are critical.
Key Functional Characteristics
The NFAI135-S00 accepts analog signals from both 2-wire and 4-wire field devices, enabling flexible integration with pressure, flow, temperature, and level transmitters. The module employs non-isolated channel architecture with internal isolation between channels and the power domain, ensuring stable operation while maintaining compact size and low power consumption.
Precision A/D conversion and linearity control allow accurate representation of field signals, supporting dependable control logic execution within Yokogawa DCS and safety-related systems.
Technical Specifications
General Specifications
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Model: NFAI135-S00
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Module Type: Analog Input
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Channel Count: 16 inputs
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Input Architecture: Non-isolated
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Supported Signal Ranges:
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4–20 mA DC
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1–5 V DC
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Transmitter Compatibility:
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2-wire transmitters
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4-wire transmitters
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System Configuration: Supports redundant system layouts
Electrical Performance
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Input Resistance: Approx. 250 Ω (current input)
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Measurement Accuracy: ±0.2% of full scale (typical)
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Noise Immunity: Designed for stable operation in industrial electrical environments
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Channel Protection: Internal isolation between channels and power circuitryMechanical Characteristics
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Dimensions: 130 × 107.5 × 32.8 mm
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Weight: 0.3 kg
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Installation: Compact module suitable for high-density I/O mounting
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Country of Origin: Japan
Typical Applications
The NFAI135-S00 is commonly deployed in systems requiring reliable analog signal acquisition, including:
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Process control systems in oil & gas and chemical plants
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Power generation and utility monitoring
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Factory automation and production lines
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Water treatment and infrastructure control
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Yokogawa CENTUM and related control platforms
FAQ
Q: What signal types does the NFAI135-S00 support?
A: The module supports standard industrial analog signals, including 4–20 mA DC and 1–5 V DC.
Q: Is this module suitable for redundant systems?
A: Yes. The NFAI135-S00 is designed to operate within dual-redundant control system configurations.
Q: Are the channels isolated from each other?
A: While the module is classified as non-isolated, it incorporates internal isolation between channels and the power supply to maintain stable operation.
