Product Description
The AAI835-H50/K4A00 is a hybrid analog I/O module for the Yokogawa CENTUM VP and CS 3000 control systems. It combines four analog input channels and four analog output channels in a single module, all supporting 4–20 mA signals with full point-to-point isolation to ensure stable and interference-free operation.
The module features built-in HART communication, enabling bidirectional digital data exchange with smart field devices for diagnostics, parameter access, and secondary variable monitoring. Supplied with the ATK4A-00 interface adapter, the AAI835-H50/K4A00 uses a KS cable connection, simplifying wiring and improving cabinet density and maintainability.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | AAI835-H50/K4A00 |
| Function | Combined Analog Input / Output |
| Channel Configuration | 4 AI / 4 AO |
| Signal Range | 4–20 mA DC (input & output) |
| Digital Protocol | HART |
| Channel Isolation | 500 V AC (channel-to-channel, channel-to-system) |
| Accuracy | Input ±16 µA / Output ±48 µA |
| Input Impedance (Power ON) | 290 Ω @ 20 mA / 450 Ω @ 4 mA |
| Input Impedance (Power OFF) | ≥ 500 kΩ |
| Maximum Input Current | 25 mA |
| Connection Method | KS Cable via ATK4A-00 adapter |
| Protection Class | Basic type, non-explosion protected |
| Weight | 0.2 kg |
Application
The AAI835-H50/K4A00 is ideal for applications where both measurement and control are required within a compact footprint, including:
-
Skid-mounted process systems
-
Local pump and valve control stations
-
Auxiliary control panels with limited I/O space
Its hybrid design reduces module count while preserving HART-level visibility for diagnostics and maintenance.
Frequently Asked Questions
Can the AAI835-H50/K4A00 handle high-voltage signals?
No. The module is strictly designed for 4–20 mA current loops. Channel voltage must remain within the 500 V AC isolation rating.
Does the ATK4A-00 support redundant KS cabling?
No. The ATK4A-00 provides a single KS cable interface. Redundant configurations require compatible baseplates and module arrangements verified at the system level.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| 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. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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