Excellent PLC
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Overview
The Yokogawa AAI143-S50/A4800 is a 16-channel isolated analog input module designed to receive 4–20 mA DC signals. It features galvanic isolation between the input and system, supports HART communication, and ensures high reliability in harsh industrial environments. The module is suitable for use in field control stations (FCS) within Yokogawa’s CENTUM control systems.
Applications
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Process control in chemical plants
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Oil and gas pipeline monitoring
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Power generation systems
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Water and wastewater treatment
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Pharmaceutical manufacturing
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Heavy industry automation
Key Advantages
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Fully isolated 16-channel input design
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High noise immunity with 1500 V AC isolation
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Built-in HART communication support
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Wide ambient temperature operation (-20 to 70 °C option available)
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Easy configuration for 2-wire or 4-wire transmitters
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Accurate and fast response (10 ms update period)
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AAI143-S50/A4800 |
| Number of Channels | 16 (Isolated) |
| Input Signal | 4 to 20 mA DC |
| Allowable Input Current | 24 mA |
| Withstanding Voltage | 1500 V AC (1 minute) |
| Input Resistance (Power ON) | 270 Ω to 350 Ω |
| Input Resistance (Power OFF) | ≥ 500 kΩ |
| Accuracy | ±16 µA |
| Temperature Drift | ±16 µA / 10 °C |
| Data Update Period | 10 ms |
| Transmitter Power Supply | 19.0 V (min at 20 mA), 25.5 V (max at 0 mA) |
| Max Current Consumption | 230 mA (5 V DC), 540 mA (24 V DC) |
| External Communication | Pressure clamp terminal / MIL / KS cable |
| HART Communication | Available |
| Dimensions (W × D × H) | 107.5 × 32.8 × 130 mm |
| Weight | 0.3 kg |
Frequently Asked Questions (FAQ)
Q1: What type of input signals does the AAI143 module accept?
A1: The AAI143 module accepts 4 to 20 mA DC input signals.
Q2: Are the input channels isolated from the system?
A2: Yes, the AAI143 provides full isolation between input channels and the system.
Q3: Can the module support HART communication?
A3: Yes, the AAI143 module supports HART communication for compatible devices.
Q4: What is the input resistance of the module?
A4: It ranges from 270 Ω at 20 mA to 350 Ω at 4 mA during operation.
Q5: How many channels does the AAI143 provide?
A5: It supports 16 isolated input channels.
Q6: Can it be used with 2-wire and 4-wire transmitters?
A6: Yes, each channel can be configured individually for 2-wire or 4-wire transmitters.
Q7: What is the accuracy of the input measurement?
A7: The module offers an accuracy of ±16 µA.
Q8: Is the module suitable for redundant configurations?
A8: Yes, the AAI143 can be used in dual-redundant setups.
Q9: What is the power consumption of the module?
A9: It consumes 230 mA at 5 V DC and 540 mA at 24 V DC.
Q10: What protection does the module offer against overvoltage?
A10: It provides 1500 V AC withstand voltage protection for 1 minute.
Related or Same-Series Models
| Model | Description | Input Type | Channels | Isolation | HART | Dimensions (mm) | Weight |
|---|---|---|---|---|---|---|---|
| AAI141 | Analog Input Module (Non-Isolated) | 4–20 mA DC | 16 | No | Yes | 107.5 × 32.8 × 130 | 0.2 kg |
| AAI135 | Analog Input Module (Isolated Channels) | 4–20 mA DC | 8 | Yes | Yes | 107.5 × 32.8 × 130 | 0.3 kg |
| AAI543 | Analog Output Module (Isolated) | 4–20 mA DC | 16 | Yes | Yes | 107.5 × 32.8 × 130 | 0.4 kg |
| AAV144 | Analog Input Module (Voltage, Isolated) | -10 to +10 V DC | 16 | Yes | No | 107.5 × 32.8 × 130 | 0.2 kg |
| AAI841 | Analog I/O Module (Non-Isolated) | 4–20 mA DC | 8 In/Out | No | Yes | 107.5 × 32.8 × 130 | 0.3 kg |
| AAB842 | Analog I/O Module (Voltage/Current, Non-Isolated) | 1–5 V / 4–20 mA | 8 In/Out | No | Yes | 107.5 × 32.8 × 130 | 0.3 kg |
Popular Yokogawa Models
| Model | Description | Function | Channels | Isolation | Dimensions (mm) | Weight |
|---|---|---|---|---|---|---|
| AAI141 | Analog Input Module | 4–20 mA Input | 16 | No | 107.5 × 32.8 × 130 | 0.2 kg |
| AAI543 | Analog Output Module | 4–20 mA Output | 16 | Yes | 107.5 × 32.8 × 130 | 0.4 kg |
| AAT141 | TC/mV Input Module | TC/mV Input | 16 | Yes | 107.5 × 32.8 × 130 | 0.2 kg |
| AAV144 | Voltage Input Module | -10 to +10 V | 16 | Yes | 107.5 × 32.8 × 130 | 0.2 kg |
| AAI835 | Analog I/O Module | 4–20 mA I/O | 4 In/Out | Yes | 107.5 × 32.8 × 130 | 0.3 kg |
| AAP135 | Pulse Input Module | Pulse Input | 8 | Yes | 107.5 × 32.8 × 130 | 0.3 kg |
