Product Description
The AFS30D-H4121 is a high-reliability Field Control Unit (FCU) serving as the primary processing node for the Yokogawa Electric Corporation CENTUM VP Distributed Control System (DCS).
Designed for mission-critical industrial environments, this unit executes complex regulatory control, sequence logic, and advanced calculation functions with deterministic timing. The AFS30D-H4121 features a fully duplexed CPU architecture, ensuring continuous process availability even in the event of a processor-side fault.
With integrated Vnet/IP communication capability, it enables high-speed data exchange between control stations and human interface stations (HIS), making it a core component in stable, high-availability plant operations across oil & gas, petrochemical, and power industries.
The “H” variant includes enhanced environmental protection, making it suitable for corrosive industrial atmospheres.
Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Model Identification | AFS30D-H4121 |
| System Platform | CENTUM VP |
| CPU | VR5432 RISC Processor, 133 MHz |
| Main Memory | 16 MB RAM (battery-backed) |
| Data Retention | ≥72 hours (after 48-hour full charge) |
| Redundancy | Fully duplexed CPU architecture |
| Network Interface | Vnet/IP (100 Mbps), FIO bus |
| Status Contact Output | 2 terminals (NC/Common) |
| Contact Rating | 30 V DC |
| Failure Logic | Contacts open automatically upon FCU hardware fault |
| Power Supply | 24 V DC nominal input |
| Operating Temperature | 0°C to +50°C |
| Dimensions | 100 mm × 100 mm × 100 mm |
| Weight | 0.2 kg |
Industrial Applications
The AFS30D-H4121 is deployed in large-scale automated facilities where operational continuity and system reliability are critical:
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Oil Refineries: Controlling distillation columns, reactor temperature loops, and blending systems
-
Power Generation Plants: Managing turbine coordination and boiler combustion control
-
LNG Terminals: Handling cryogenic storage regulation and regasification sequencing
-
Water & Wastewater Plants: Synchronizing high-capacity pump stations and filtration processes
Its duplex architecture and deterministic execution make it suitable for environments where downtime presents major safety or economic consequences.
FAQ
How long does the memory battery take to fully charge?
The internal backup battery requires approximately 48 hours of continuous power to reach full charge. Once charged, it can retain memory data for up to 72 hours during a power interruption.
What does the “H” in the model code signify?
The “H” designation indicates a high-reliability hardware revision, typically including G3 conformal coating to protect against corrosive gases such as H₂S or SO₂ commonly present in harsh industrial environments.
Is this unit compatible with older V-NET systems?
The AFS30D-H4121 natively supports Vnet/IP. Integration with legacy coaxial V-NET systems requires a dedicated bus converter or gateway module for protocol bridging.
| 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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