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- Yokogawa
- AAI143-S50/K4A00
- Analog Input Module
- Japan
- 107.5 mm × 32.8 mm × 130 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview: Yokogawa AAI143‑S50/K4A00
Product Introduction
The AAI143‑S50/K4A00 is a highly reliable, 16‑channel isolated analog input module tailored for demanding process automation environments. It offers precision input handling with robust electrical isolation, enabling stable, safe signal acquisition across complex industrial systems. Equipped with interchangeable interface options—including a KS cable adapter—it supports flexible connection to terminal boards, boosting convenience in installation and maintenance.
This module suits systems like large-scale distributed control architectures, where consistent multi-channel data acquisition is critical. Engineered for resilience, it delivers dependable performance in high-noise, high-voltage, or redundancy-critical setups.
Technical Specifications
| Specification | Details |
|---|---|
| Model | AAI143‑S50/K4A00 |
| Number of Input Channels | 16 (each channel individually isolated) |
| Input Signal Type | 4–20 mA DC |
| Allowable Input Current | Up to 24 mA |
| Input Resistance (Power ON) | 270–350 Ω (20 mA → 350 Ω; 4 mA → 270 Ω) |
| Input Resistance (Power OFF) | ≥ 500 kΩ |
| Accuracy | ±16 µA |
| Data Update Period | 10 ms |
| Withstanding Voltage | 1500 V AC between input and system (1 minute) |
| Transmitter Power Supply | ≥ 19 V DC at 20 mA; ≤ 25.5 V DC at 0 mA (max. 25 mA limit) |
| Maximum Current Consumption | ~230 mA at 5 V DC; ~540 mA at 24 V DC |
| Power Supply / Mounting | 5 V DC or 24 V DC; DIN‑rail or panel mounting available |
| Operating Temperature | –20 °C to +60 °C |
| Weight | 0.3 kg |
| Interface Option | KS Cable Interface Adapter (for AEA4D terminal board) |
(All weight values include adapter interface)
Product Applications
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Large-Scale Control Systems
Ideal for analog signal collection in refinery, petrochemical, and power generation plants. -
Redundant Control Architectures
Withstand-voltage isolation and fast update rates support dual-redundant DCS installations. -
High-Noise Environments
Effective in suppressing electromagnetic interference, enabling reliable data from pressure, temperature, or flow sensors. -
Complex Instrumentation Networks
Supports flexible transmitter wiring (2-wire or 4-wire) and interfaces seamlessly with centralized I/O racks. -
Mission-Critical Infrastructure
Suitable for safety monitoring in utilities or heavy manufacturing where signal fidelity is vital over time.
Product Advantages
-
High Precision Input
±16 µA accuracy ensures tight fidelity across 16 isolated channels. -
Strong Electrical Isolation
1500 V AC withstanding capacity secures system segments against fault propagation. -
Fast Data Throughput
10 ms update ensures near-real-time monitoring and fast anomaly detection. -
Flexible Interface Option
The KS cable adapter (ATK4A‑00) allows smooth integration into diverse terminal board layouts. -
Space-Efficient and Field-Ready
Compact 0.3 kg module for simple DIN-rail installation in control cabinets.
Brand & Series
-
Brand: Yokogawa (industrial automation specialist)
-
Series: AAI143 — standard isolated 4–20 mA analog input modules, available in multiple variants (standard type, HART-enabled, wide‑temperature, explosion‑proof, etc.)
Related Models (Same Series or Closely Related)
| Model | ### Parameter Highlights |
|---|---|
| AAI143‑S53/K4A00 | Like S50, but includes wide temperature range (–20 °C to +70 °C) and ISA G3 standard, isolated channels, 1500 V withstand, 16 ch, weight ~0.3 kg |
| AAI143‑H50/K4A00 | Standard variant with HART digital protocol support, 16 ch isolated, KS interface, same electrical specs |
| AAI143‑H53/K4A00 | Combines HART communication with the wide-temp (–20 °C to +70 °C) and ISA G3 options |
| AAI143‑S50/A4S00 | Uses pressure-clamp analog terminal block instead of KS cable connection, otherwise same analog input specs |
| AAI543‑H50/K4A00 | Analog output module (4–20 mA) variant, 16 ch isolated, HART, KS adapter—complementary to input modules |
Popular Models from the Same Brand
| Model | Key Attributes |
|---|---|
| AAI543‑S50/A4S10 | Analog output, 16‑ch isolated, standard type with surge absorber block—versatile output complement to input modules |
| AAI543‑H50/A4S00 | Output module with HART protocol and pressure-clamp connector block |
| AAI143‑S50/A4D00 | Dual pressure-clamp terminal block for analog input, suitable for redundant termination |
| AAI143‑H50/A4S10 | Input module with HART, and pressure-clamp with surge absorption |
| AAB842‑H00/K4A00 | Analog I/O module: 8‑ch input (1–5 V or 4–20 mA) and 8‑ch output with KS adapter, HART option available |
FAQ (QA Format)
Q1: What signal types does the module accept?
A1: It accepts 4–20 mA analog current inputs on 16 isolated channels.
Q2: How precise is the input measurement?
A2: Accuracy is high—within ±16 µA, ensuring consistent precision across channels.
Q3: Can it withstand electrical noise and fault conditions?
A3: Yes. It incorporates 1500 V AC isolation between input and system, offering strong electrical resilience.
Q4: How many channels does it support?
A4: Sixteen individually isolated channels, suitable for complex multi-sensor setups.
Q5: What is the update speed for data readings?
A5: The module updates data every 10 ms—fast enough for near real-time monitoring.
Q6: How does it connect to I/O racks?
A6: It uses a KS cable interface adapter, compatible with AEA4D terminal boards, facilitating easy connection routing.
Q7: What are its power requirements?
A7: It supports 5 V DC or optionally 24 V DC (depending on system), with typical consumption ~230 mA at 5 V or 540 mA at 24 V.
Q8: Is it durable in varied temperature environments?
A8: Yes—rated for operation between –20 °C to +60 °C; a variant supports –20 °C to +70 °C.
Q9: Is the device heavy or bulky?
A9: Not at all—compact and lightweight at 0.3 kg, suitable for dense rack installations.
Q10: Does it support digital communication protocols like HART?
A10: The S50/K4A00 variant does not, but the H50/K4A00 versions include HART communication.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.