Product Description
The Yokogawa SDV531-S33 is a high-reliability, 8-channel digital output module designed for the ProSafe-RS Safety Instrumented System (SIS). Operating as a 24 V DC current-sourcing output, it is used to drive critical final elements such as emergency shutdown (ESD) valves, safety solenoids, and alarm devices.
The -S33 variant is optimized for harsh and high-demand safety environments. With robust module isolation and comprehensive output diagnostics, it prevents field-side electrical faults from affecting system logic. High current capacity and fast response performance make the SDV531-S33 well suited for SIL 3–compliant safety loops in hazardous industrial processes.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | SDV531 |
| Suffix Code | -S33 |
| Output Channels | 8-channel, current source (Source type) |
| Rated Output Voltage | 24 V DC |
| Maximum Load Current | 0.6 A per channel / 4.8 A per module |
| Minimum Load Current | 35 mA |
| Internal Voltage Drop (ON) | Max. 1.0 V DC |
| Response Time | ≤ 30 ms (safety-related OFF) |
| Isolation Resistance | ≥ 100 MΩ @ 500 V DC |
| Withstand Voltage | 2.0 kV AC (field wiring to system logic) |
| Internal Power Consumption | 280 mA @ 5 V DC; 140 mA @ 24 V DC |
| External Field Power | 24 V DC (+20% / −10%), ≥ 5 A recommended |
| Operating Temperature | −20°C to +70°C |
| Weight | 0.35 kg |
Core Application Scenarios
-
Emergency Shutdown (ESD)
Driving final elements in high-integrity pressure protection systems (HIPPS) and unit isolation logic. -
Solenoid Valve Control
Actuating safety-rated solenoids in oil & gas, refining, and petrochemical facilities. -
Safety Interlocking
High-integrity signaling between process units to prevent unsafe operating conditions.
Technical FAQ
Q: What distinguishes the SDV531-S33 from the -S13 version?
A: The -S33 variant incorporates enhanced conformal coating and specific hardware refinements for improved durability in corrosive (G3) environments, while maintaining the same functional safety role.
Q: Can the SDV531-S33 detect field wiring faults?
A: Yes. The module performs open-circuit and short-circuit diagnostics. A minimum load of 35 mA is required for accurate line monitoring.
Q: Is hot-swapping supported?
A: When installed in a redundant ProSafe-RS configuration, the SDV531-S33 supports hot replacement without interrupting active safety protection.
| 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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