Product Description
The NFAI543 is a high-density, isolated analog output module for Yokogawa CENTUM VP and CS 3000 FIO systems. It provides 16 independent 4–20 mA output channels for driving final control elements such as control valves, actuators, and variable-speed drives.
Designed with channel-to-system isolation, the NFAI543 (Model: NFAI543) protects core control logic from field-side electrical surges and noise, ensuring high reliability and availability in demanding industrial environments.
Technical Specifications
| Item | Specification |
|---|---|
| Output Channels | 16 isolated |
| Signal Range | 4–20 mA DC |
| Isolation | 1500 V AC (output-to-system, 1 min) |
| Load Impedance | 0–750 Ω |
| Accuracy | ±0.3% of full scale |
| Temperature Drift | Max. ±0.01% / °C |
| Response Time | 10 ms data refresh; 100 ms step response |
| Diagnostics | Circuit-open detection (<0.65 mA) |
| Fail-safe | Programmable fallback per channel |
| Power Requirements | 230 mA @ 5 V DC; 540 mA @ 24 V DC |
| Communication | HART protocol over 4–20 mA |
| Mass | 0.4 kg |
Application and Connectivity
The NFAI543 supports pressure-clamp terminals and MIL connector cable interfaces, allowing flexible cabinet wiring. Its HART compatibility enables remote device configuration and diagnostics for Asset Management Systems (AMS) without interrupting the analog output signal.
Frequently Asked Questions
What happens if communication with the controller is lost?
Each channel has a programmable fallback state, which can be set to hold the last value or transition to a specific safe value (e.g., 4 mA or 0 mA) to maintain process safety during system faults.
How does the isolation benefit the control loop?
The 1500 V AC isolation prevents ground loops and protects the internal system bus from field-side transients, ensuring that a fault on one field wiring circuit does not affect the rest of the DCS hardware.
| 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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