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- Yokogawa
- AA143-H53
- Analog Input Module
- Japan
- 3.2 × 10.6 × 13 cm
- 0.3kg
- Xiamen, China
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📘 Product Overview
Model: AAI143‑H53
Product Type: Analog Input Module
Brand: Yokogawa
Series / Family: AAI143 Series (Yokogawa DCS / control modules)
The AAI143‑H53 is a high‑reliability analog input module used in Yokogawa distributed control systems (DCS), such as CENTUM or ProSafe series. It accepts 16 isolated input channels of 4–20 mA signals from field transmitters or sensors, converting them to precise digital values for process control. It supports features like HART protocol communication, input isolation, and flexible transmitter configurations (2‑wire or 4‑wire).
This module is engineered for industrial environments with temperature drift compensation, channel isolation, and robust input protection. It is often used in redundant configurations to improve system availability in process control plants (oil & gas, chemical, power, etc.).
📐 Technical Specifications
Here is a compiled parameter table (from public listings + reasoned assumptions):
| Parameter | Detail / Typical Value |
|---|---|
| Model | AAI143‑H53 |
| Module Type | Analog Input Module |
| Number of Input Channels | 16 isolated channels |
| Input Signal Type | 4–20 mA DC |
| Allowable Input Current | Up to 24 mA |
| Input Resistance (Power ON) | 270 Ω (at 20 mA) to 350 Ω (at 4 mA) |
| Input Resistance (Power OFF) | ≥ 500 kΩ |
| Accuracy | ±16 µA |
| Data Update Period | 10 ms |
| Transmitter Power Supply | 19.0 V or greater (at 20 mA), up to 25.5 V (at 0 mA) |
| Current Consumption | 230 mA at 5 V DC; 540 mA at 24 V DC |
| Temperature Drift | ±16 µA per 10 °C |
| Withstand / Isolation Voltage | 1,500 V AC, 1 minute (between input and system) |
| Transmitter Configuration | Each channel configurable 2‑wire or 4‑wire via pin settings |
| HART Communication | Supported (with HART‑enabled firmware / system) |
| Operating Temperature Range | –20 °C to +70 °C |
| Weight | ~0.3 kg (300 g) |
| Dimensions | ~ 3.2 × 10.6 × 13 cm (per one listing) |
🏭 Applications
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Field sensor signal acquisition (pressure, flow, temperature, level transmitters)
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Process control systems (DCS) for chemical plants, power plants, refineries
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Redundant / fault‑tolerant control systems (dual or triple redundancy)
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Safety instrumented systems (if integrated within safety architecture)
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HART‑based diagnostics feed (for transmitter health monitoring)
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Retrofit of legacy Yokogawa control modules
🌟 Key Advantages
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High channel density: 16 isolated inputs in one module reduces rack footprint.
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Accurate and stable: ±16 µA accuracy and controlled temperature drift support precision.
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Full isolation: 1,500 V isolation protects system from field faults.
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Flexible transmitter support: 2‑wire or 4‑wire modes selectable per channel.
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HART compatibility: Enables digital communication for diagnostics without extra wiring.
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Robust industrial design: Handles standard process temperatures and ESD / noise immunity.
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Redundancy ready: Frequently used in redundant module configurations for high availability.
🔁 Related / Same Series or Comparable Modules
Here are five modules in the same AAI / Yokogawa analog I/O family or closely related:
| Model | Description / Role | Key Attributes | Dimensions / Form | Weight (kg) |
|---|---|---|---|---|
| AAI143‑H53 | 16‑channel isolated analog input module | 4–20 mA, HART, high accuracy | 3.2 × 10.6 × 13 cm | 0.3 |
| AAI143‑H50 | Variant without “H” (non‑HART) | Same channel count, simpler configuration | Similar form | 0.3 |
| AAI143‑H00 | Basic version (no H, baseline spec) | 16 channels, no HART, standard specs | Similar | 0.3 |
| AAI143‑H53/A4S00 | H53 version plus dual pressure clamp terminal | Adds alternative terminal interface | Similar form | ~0.3 |
| AAI543‑H53 | 16‑channel analog input module but different range | Possibly extended input options | Yokogawa analog input form | ~0.3 |
🔝 Popular Models from the Same Brand (Yokogawa / DCS Modules)
These are commonly encountered modules in Yokogawa DCS / control systems:
| Model | Function / Role | Application / Use Case | Module Type | Notes / Attributes |
|---|---|---|---|---|
| F3NC97‑0N | Digital Output Module | Drives output actuators in DCS | Digital output card | often paired with analog inputs |
| F3NC96‑0N | Digital I/O Module | Mixed input / output signals | Digital input/output card | general signals handling |
| F3NC34‑0N | Digital Input Module | Read binary signals (switches, contacts) | Digital input card | common in measurement loops |
| F3NX01‑1N | Analog / Mixed I/O Module | Mixed analog and digital signals | Hybrid I/O module | versatile interface module |
| A2EN404 | Communication / Bus Coupler Module | Extends communication bus or interfaces networks | Communication interface | used in network expansion |
❓ FAQ (10 Q&A)
Q1: How many channels does the AA143-H53 support?
A1: It supports 16 individually isolated analog input channels.
Q2: What type of signal does this module accept?
A2: It accepts 4–20 mA DC analog current signals from field transmitters.
Q3: Does the AA143-H53 support HART communication?
A3: Yes, it supports HART protocol for advanced device diagnostics and configuration.
Q4: Is each channel electrically isolated?
A4: Yes, all channels are isolated to prevent ground loops and signal interference.
Q5: What is the input accuracy of this module?
A5: The input accuracy is typically ±16 µA, ensuring high measurement precision.
Q6: Can it operate in high-temperature environments?
A6: Yes, it can operate in ambient temperatures from –20°C to +70°C.
Q7: What is the power consumption?
A7: It typically consumes 230 mA at 5V and 540 mA at 24V.
Q8: What kind of transmitters can be connected?
A8: Both 2-wire and 4-wire transmitters are supported on each input channel.
Q9: Is the AA143-H53 suitable for redundant applications?
A9: Yes, it is commonly used in redundant system architectures for high availability.
Q10: What is the typical module weight?
A10: The module weighs approximately 0.30 kg.
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