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Product Introduction
The Yokogawa NFAI135-S00 Analog Input Module is a high-performance module designed for precise and reliable acquisition of analog signals in process automation systems. It is typically applied within Yokogawa’s control platforms, enabling accurate signal conditioning and conversion from sensors, transmitters, and field devices. This module supports stable integration into Distributed Control Systems (DCS), providing engineers with a dependable interface for analog measurements such as temperature, pressure, flow, and level.
Product Advantages
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High Accuracy: Provides precise signal acquisition for critical process control tasks.
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Wide Compatibility: Supports multiple types of analog input signals including 4–20 mA, 1–5 V, and thermocouple/RTD signals depending on configuration.
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Robust Reliability: Built with Yokogawa’s proven quality to ensure long-term stability in harsh industrial environments.
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Flexible Configuration: Allows channel-based configuration for different sensor types.
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Noise Immunity: Advanced filtering and signal isolation reduce interference, ensuring clean and accurate readings.
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Seamless Integration: Designed to fit Yokogawa control systems for easy installation and maintenance.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | Yokogawa NFAI135-S00 Analog Input Module |
| Number of Channels | 16 channels (typical configuration) |
| Signal Range | 4–20 mA, 1–5 V, ±10 V (depending on wiring and setup) |
| Resolution | 16-bit A/D conversion |
| Accuracy | ±0.1% of full scale (typical) |
| Isolation | Channel-to-bus and channel-to-channel isolation |
| Power Supply | Supplied from system backplane |
| Dimensions | 130 x 107.5 x 32.8 mm |
| Weight | 0.3 kg |
| Operating Temperature | 0 – 55 °C |
| Storage Temperature | -20 – 70 °C |
| Mounting | Mounted on base plate or I/O rack |
| Communication | Backplane bus with control processor |
Product Applications
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Process Automation: Acquisition of analog signals for temperature, flow, pressure, and level monitoring.
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Energy Management: Used in power generation plants to capture key measurement values.
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Oil & Gas: Integration into upstream and downstream operations for field data acquisition.
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Water Treatment: Precise monitoring of water quality parameters and chemical dosing.
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Chemical Industry: Reliable measurement for process control in batch and continuous plants.
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Pharmaceutical Industry: Ensures compliance with strict monitoring standards.
Compatible Models
The NFAI135-S00 is compatible with Yokogawa’s Node Field Control Units (NFCP), and can work alongside digital input/output and communication modules within the same control rack. It is designed for integration into systems such as Yokogawa ProSafe-RS and CENTUM VP platforms.
Installation Instructions
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Ensure the power supply of the rack is disconnected before installation.
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Slide the module into the appropriate I/O slot of the baseplate until it locks into position.
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Connect field wiring to the terminal block, ensuring polarity and signal type are correct.
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Verify grounding and shielding to minimize noise.
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Power up the system and perform configuration using engineering software.
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Run loop checks to confirm proper channel operation.
FAQ
Q1: Can the NFAI135-S00 handle both current and voltage inputs on the same module?
A1: Yes, but each channel must be configured individually; mixed signal types are possible with proper setup.
Q2: What is the conversion resolution of this module?
A2: The module provides a 16-bit resolution for precise analog-to-digital conversion.
Q3: Does the module support HART communication signals?
A3: No, this module is designed for standard analog inputs. HART support requires dedicated HART-enabled input modules.
Q4: How is channel-to-channel isolation implemented?
A4: Each channel is galvanically isolated to reduce noise and prevent cross-interference.
Q5: What diagnostic functions are available?
A5: It provides channel error detection, wire break detection for current loops, and module failure alarms.
Q6: Can this module be hot-swapped?
A6: Yes, it supports hot swapping when used within Yokogawa’s control system framework.
Q7: What engineering software is used to configure the module?
A7: Configuration is typically done through Yokogawa’s system engineering tools such as CENTUM VP Engineering Tool.
Q8: What is the maximum cable length supported for field wiring?
A8: Up to 600 meters for 4–20 mA signals, depending on cable resistance and installation environment.
Q9: Does the module compensate for thermocouple cold junction?
A9: Yes, if thermocouple inputs are selected, cold junction compensation is built in.
Q10: Is redundancy supported?
A10: Yes, when used with redundant field control stations, modules can operate in a redundant configuration.
Recommended Related Models
| Model | Description | Channels | Signal Type | Key Feature |
|---|---|---|---|---|
| NFAI141-S00 | Analog Input Module | 16 | Current/Voltage | Enhanced noise immunity |
| NFAI152-S00 | Analog Input Module | 8 | Thermocouple | High precision for temperature |
| NFVI161-S00 | Analog Input Module | 16 | Voltage | Wide voltage measurement range |
| NFRT131-S00 | RTD Input Module | 8 | RTD | Dedicated RTD measurement |
| NFDI112-S00 | Digital Input Module (related for integration) | 16 | Digital | Pairs with analog inputs |
| NFAI135-H00 | Analog Input Module (variant) | 16 | Current/Voltage | High-performance version |
Recommended Popular Models from Yokogawa
| Model | Description | Type | Key Application |
|---|---|---|---|
| AAI141-S50 | Analog Input Module | Analog Input | Standard DCS input module |
| ADV151-P00 | Communication Module | Network Interface | Fieldbus and system integration |
| ADM51-S00 | Digital Output Module | Digital Output | Control of field devices |
| NFDV151-S00 | Digital Input Module | Digital Input | Discrete signal acquisition |
| PW482-S | Power Supply Module | Power Supply | Stable power for system modules |
| AAI143-S50 | Analog Input Module | Analog Input | Extended precision for process signals |
| ADV151-S00 | Communication Processor Module | Control Network | Data communication redundancy |
| SDV144-S13 | Analog Output Module | Analog Output | High-resolution control signals |
