Product Description
The SNT401 is a high-speed optical communication interface designed for the Yokogawa Centum VP Distributed Control System (DCS). As the "Master" side of the optical link, this module converts electrical Extended System Bus (ESB) signals into optical data, enabling long-distance transmission. It is essential for connecting Field Control Stations (FCS) with remote I/O nodes, overcoming the distance limits of copper cables and providing immunity to electromagnetic interference (EMI) and ground potential differences.
Technical Specifications
| Specification | Details |
|---|---|
| Model Identification | SNT401 |
| Module Function | Optical ESB Bus Repeater (Master Side) |
| Network Compatibility | Centum VP / Centum CS 3000 ESB Bus |
| Data Transmission | Bi-directional optical signal conversion |
| Transmission Distance | Up to 5 km, depending on the slave module used |
| Physical Dimensions | 12.6 cm (H) x 2.2 cm (W) x 12.4 cm (D) |
| Unit Mass | 0.3 kg |
Network Architecture and Reliability
The SNT401 is crucial in mission-critical industrial setups, allowing for seamless communication over long distances. When paired with a slave module like the ANT502, it extends the DCS network across large plant areas, such as offshore platforms or refineries, without the risk of signal degradation. Its compact form factor (2.2 cm width) facilitates high-density installations. Designed with Japanese precision, the module provides excellent Mean Time Between Failures (MTBF) for high-availability systems.
Functional Comparison: SNT401 vs. SNT501
While both the SNT401 and SNT501 serve as master-side repeaters, the SNT501 typically includes updated transceiver technology for different fiber types. However, the SNT401 remains the preferred option for standard V net/IP and ESB bus architectures due to its proven performance, lightweight design (0.3 kg), and compatibility with both legacy and modern Centum VP hardware.
FAQ
Q: Can the SNT401 be used in a redundant configuration?
A: Yes, the SNT401 can be installed in a duplexed configuration to ensure optical link availability, preventing interruptions in critical process control.
Q: Does this module require a specific fiber optic connector?
A: The SNT401 typically uses standardized optical connectors (e.g., LC or SC), depending on the sub-model. It is important to match the fiber type (single-mode vs. multi-mode) to the corresponding SNT/ANT pair being used.
| 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. |
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