Product Description
The AAI835 (P/N: AAI835-S00/K4A00) is a standard analog I/O module for the Yokogawa CENTUM VP distributed control system. As the S-suffix (Standard) variant, it is designed for reliable 4–20 mA analog signal processing where HART digital communication is not required.
This configuration integrates four analog input channels and four analog output channels within a compact module. Each channel is galvanically isolated, ensuring stable operation and protection against ground loops in electrically noisy industrial environments.
The included ATK4A-00 KS cable interface adapter enables direct connection to KS cable assemblies, reducing cabinet wiring effort and improving installation reliability.
Technical Specifications
| Item | Specification |
|---|---|
| Channel Configuration | 4 × analog input + 4 × analog output |
| Signal Type | 4 to 20 mA DC (input and output) |
| Isolation | Channel-to-channel and channel-to-system |
| Isolation Rating | 500 V AC for 1 minute |
| Input Impedance (Power ON) | 290 Ω @ 20 mA 450 Ω @ 4 mA |
| Input Impedance (Power OFF) | ≥ 500 kΩ |
| Input Accuracy | ±16 µA |
| Output Accuracy | ±48 µA |
| Maximum Input Current | 25 mA |
| Connectivity | KS cable interface adapter (ATK4A-00) |
| Protection Type | Basic type (non-explosion protected) |
| Weight | 0.2 kg |
Application Use Cases
The AAI835-S00/K4A00 is commonly used in standard process control loops involving field transmitters (e.g., pressure, flow, or level) and final control elements (e.g., I/P converters or control valves).
It is well suited for cost-effective installations that do not require HART communication but still demand Yokogawa’s proven isolation, stability, and long-term reliability.
FAQ
What is the main difference between the S-suffix and H-suffix versions?
The S-suffix version supports pure analog 4–20 mA signals only. The H-suffix version adds hardware for HART digital communication.
Can this module be hot-swapped in a live CENTUM VP system?
Yes. CENTUM VP I/O modules support online replacement, provided system configuration and redundancy rules are properly followed.
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|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
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