Product Description
The SDV144-S53/STB4D-00 is a high-density safety digital input module developed for the Yokogawa ProSafe-RS Safety Instrumented System. It provides 16 isolated digital input channels for interfacing with field devices such as pressure switches, emergency stop pushbuttons, and limit switches.
Designed for SIL3 safety applications, the module performs continuous internal self-diagnostics, ensuring that every input signal is validated before being accepted by the safety logic solver. This guarantees deterministic and fault-tolerant operation in high-risk process environments.
A key feature of the SDV144-S53/STB4D-00 is its advanced line monitoring capability, which can clearly distinguish between a valid contact state and wiring faults such as open circuits or short circuits. Its compact footprint and efficient power usage make it well suited for high-density safety cabinets where space optimization is critical.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Channels | 16 channels, module-to-channel isolation |
| Rated Input Voltage | 24 V DC |
| Input Thresholds | ON ≥ 18 V DC / OFF ≤ 5 V DC |
| Input Current | 4.1 mA @ 24 V DC |
| Safety Integrity Level | SIL3 (IEC 61508 compliant) |
| Line Monitoring | Short-circuit and open-loop detection |
| Diagnostic Interval | Hardware integrity checks every 100 ms |
| Internal Power Consumption | Max. 350 mA @ 5 V DC |
| Dimensions (W × H × D) | 25 × 127 × 102 mm |
| Weight | 0.2 kg |
Application Scenarios
The SDV144-S53/STB4D-00 is widely deployed in oil & gas, power generation, and chemical processing facilities. It functions as the primary sensing interface in:
-
Emergency Shutdown (ESD) systems
-
Fire & Gas (F&G) protection systems
By ensuring rapid and validated detection of hazardous conditions, the module enables immediate and reliable safety responses.
Redundancy Support
Yes. The SDV144-S53/STB4D-00 supports dual-redundant configuration within ProSafe-RS I/O racks. In this setup, if one module experiences an internal fault, the partner module assumes operation instantly—allowing hot swapping and online maintenance without interruption of the safety function or plant operation.
| 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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