Product Description
The AAI841 is a multi-functional analog I/O module developed for the Yokogawa CENTUM VP and CS 3000 control systems. It maximizes rack efficiency by combining analog input and output functions within a single slot, providing eight total channels typically configured as 4 analog inputs and 4 analog outputs, all operating on 4–20 mA signals.
Designed for high reliability and stable signal processing, the AAI841 features electrical isolation between I/O signals and system logic, protecting the DCS backplane from surges, noise, and ground loop interference. Its compact, robust design makes it well suited for continuous operation in space-constrained industrial environments.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | AAI841 |
| Module Type | Combined Analog Current Input / Output |
| Channel Configuration | 4 AI / 4 AO (8 channels total) |
| Signal Range | 4–20 mA DC |
| Isolation | 500 V AC (I/O to system logic) |
| Input Resistance | 250 Ω (nominal) |
| Output Load Resistance | 0–600 Ω |
| Accuracy | Input ±16 µA / Output ±48 µA |
| Update Cycle | 10 ms |
| Power Supply | 24 V DC (via system bus) |
| Weight | 0.3 kg |
Application
The AAI841 is ideal for localized control loops where both measurement and actuation are required in a compact form, such as:
-
Heat exchanger and temperature control loops
-
Chemical dosing and blending skids
-
Remote or skid-mounted instrument enclosures
By handling both feedback and control action on a single module, it reduces wiring complexity and overall I/O footprint.
Frequently Asked Questions
Can the AAI841 be used in redundant configurations?
Yes. When installed on a redundancy-capable CENTUM VP baseplate, the AAI841 supports dual-redundant operation to enhance system availability.
Does the AAI841 support HART communication?
The standard AAI841 is analog-only. For applications requiring HART diagnostics and digital device management, the AAI841-H variant should be selected.
| 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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