Product Description
The SEC401-51 is a high-reliability master-side ESB Bus coupler for Yokogawa ProSafe-RS Safety Instrumented Systems (SIS). It provides a deterministic, high-speed communication link between the Safety Control Station (SCS) and downstream safety node units, ensuring SIL 3-compliant safety logic execution.
The SEC401-51 (Model: SEC401, Suffix: -51) features compact form factor, robust G3 environmental protection, and precise signal handling for mission-critical safety applications.
Technical Specifications
| Item | Specification |
|---|---|
| Function | Master-side ESB Bus interface (ProSafe-RS) |
| Node Capacity | Up to 9 safety nodes per ESB segment |
| Data Throughput | 128 Mbps (high-speed I/O) |
| Maximum Transmission Span | 10 meters (standard ESB cabling) |
| Environmental Protection | ISA Standard G3 conformal coating |
| Safety Integrity | SIL 3 compliant |
| Current Consumption | 0.5 A at 5 V DC |
| Physical Weight | 0.24 kg |
| Form Factor | Compact module for SCU rack installation |
Industrial Performance and Reliability
-
Maintains independence and integrity of safety-critical communications
-
G3 coating protects against corrosive gases (e.g., H₂S) and humidity
-
Supports redundant ESB configurations for uninterrupted safety monitoring
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Ideal for hazardous industrial environments, including petrochemical and refining plants
Frequently Asked Questions
What is the difference between the SEC401 and the standard EC401?
The SEC401-51 is SIL 3 certified and designed for ProSafe-RS. It includes specialized diagnostics and firmware required for safety compliance, which are not present in the standard CENTUM VP EC401 modules.
Can this module be used for distances greater than 10 meters?
No. The SEC401-51 supports a maximum of 10 m per ESB segment. For longer distances, an optical ESB repeater and fiber optic cabling are required to maintain signal integrity.
| 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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