Yokogawa S2SC70D-FA412010 Duplexed Safety Control Unit | Replacement, Equivalent & Selection Guide
The Yokogawa S2SC70D-FA412010 is a high-integrity Duplexed Safety Control Unit designed for the ProSafe-RS Safety Instrumented System (SIS) platform. Engineered for process industries where functional safety is non-negotiable, this module delivers redundant processing architecture to meet SIL 2 and SIL 3 requirements per IEC 61511 and IEC 61508. At Konmask.com, we supply verified OEM and equivalent units to procurement engineers who demand traceability, documentation, and fast delivery.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | S2SC70D-FA412010 |
| Manufacturer | Yokogawa Electric Corporation |
| Platform | ProSafe-RS Safety Instrumented System |
| Module Type | Duplexed Safety Control Unit (SCU) |
| Architecture | Dual-redundant (1oo2D / 2oo2D) |
| Safety Integrity Level | SIL 2 / SIL 3 (IEC 61508 / IEC 61511) |
| Communication | Vnet/IP (Ethernet-based safety bus) |
| Power Supply | 24 VDC (redundant) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -20°C to +70°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Approx. Weight | 13 kg |
| Country of Origin | Japan |
| Certifications | TÜV, CE, IEC 61508 SIL 3 |
Compatible Replacement & Equivalent Models
When the S2SC70D-FA412010 is unavailable or under evaluation, the following Yokogawa ProSafe-RS units may serve as functional equivalents depending on your system revision and I/O configuration. Always verify firmware compatibility and chassis slot assignments before substitution.
- S2SC70D-FA412000 — Earlier firmware variant; functionally equivalent in most ProSafe-RS R3.x installations
- S2SC70D-FA412020 — Successor revision with enhanced diagnostics; backward-compatible in most chassis
- S2SC70S-FA412010 — Simplex (non-duplexed) variant; suitable for SIL 2 applications with reduced redundancy
- Yokogawa SSC60D Series — Previous-generation safety controller; requires engineering review for migration
- Third-party SIL 3 SCU — Triconex, Hima, or ABB Ability™ Safety units may be considered for full system replacement projects
⚠ Konmask recommends engaging a certified functional safety engineer (CFSE) before any like-for-like substitution in a live SIS environment.
Why Choose the Original Model
- Certified SIL 3 integrity — TÜV-certified duplexed architecture eliminates common-cause failures
- Seamless ProSafe-RS integration — Native Vnet/IP communication with Yokogawa CENTUM VP DCS without gateway hardware
- Hot-swap redundancy — Replace the standby SCU without process shutdown, maximizing plant availability
- Proven field record — Deployed in LNG, refinery, and chemical plants across Asia-Pacific and the Middle East
- OEM documentation — Full engineering manuals, safety manuals, and FMEDA reports available from Yokogawa
Typical Applications
- Emergency Shutdown Systems (ESD) in oil & gas upstream and downstream facilities
- Burner Management Systems (BMS) for fired heaters and boilers
- High-integrity Pressure Protection Systems (HIPPS)
- Compressor and turbine protection in LNG liquefaction trains
- Reactor safety interlock systems in petrochemical plants
- Fire & Gas (F&G) logic solver integration
System Compatibility
- DCS Integration: Yokogawa CENTUM VP R5.x / R6.x via Vnet/IP
- Engineering Tool: ProSafe-RS Engineering Environment (PREE)
- Chassis: ProSafe-RS Node Unit (S2NU series)
- I/O Modules: Compatible with S2SI/S2SO analog and digital I/O cards
- Redundancy Bus: Dual Vnet/IP rings for fault-tolerant communication
- Firmware: ProSafe-RS R3.02 and above (confirm revision with Yokogawa before ordering)
Selection Guide
Use the following criteria to confirm the S2SC70D-FA412010 is the correct unit for your project:
- ✅ SIL requirement: SIL 2 or SIL 3 — duplexed SCU required → S2SC70D
- ✅ Redundancy mode: 1oo2D or 2oo2D architecture required → FA412010 variant
- ✅ Platform: Existing ProSafe-RS installation with S2NU chassis
- ✅ Communication: Vnet/IP network already deployed
- ⚠ SIL 1 only: Consider simplex S2SC70S variant for cost optimization
- ⚠ New project: Evaluate ProSafe-RS R4.x platform for latest cybersecurity compliance
Quality Assurance & Sourcing
- Source: Authorized distribution channels and verified surplus inventory
- Inspection: Each unit undergoes visual, functional, and label authenticity checks
- Documentation: Certificate of conformance, test report, and traceability records provided on request
- Warranty: 12-month replacement warranty against manufacturing defects
- Anti-counterfeit: Holographic label verification and serial number cross-check with Yokogawa records
How to Order
- Confirm part number: S2SC70D-FA412010 and required quantity
- Submit RFQ via support@konmask.com or the on-page inquiry form
- Receive quotation with lead time, unit price, and shipping options within 24 hours
- Approve proforma invoice and arrange payment (T/T, L/C, or credit terms for qualified accounts)
- Shipment with full documentation via DHL / FedEx / sea freight as required
Replacement & Compatibility FAQ
Q: Can I replace S2SC70D-FA412010 with S2SC70D-FA412000 without re-engineering?
A: In most ProSafe-RS R3.x systems, yes — but firmware version and safety manual revision must be verified. Contact Konmask for a compatibility assessment.
Q: Is this unit compatible with CENTUM CS 3000?
A: No. ProSafe-RS SCUs communicate via Vnet/IP and require CENTUM VP R5.x or later. CS 3000 integration requires a gateway or system migration.
Q: Can the duplexed SCU be replaced online (hot-swap)?
A: Yes. The standby SCU can be replaced while the active unit maintains process control, provided the system is in duplex mode and the replacement procedure in the ProSafe-RS maintenance manual is followed.
Q: Do you supply the matching I/O modules?
A: Yes. Konmask stocks a range of ProSafe-RS S2SI/S2SO I/O cards. Contact us with your full BOM for a consolidated quote.
Q: What is the typical lead time?
A: Ex-stock units ship within 3–5 business days. Non-stock items typically require 4–8 weeks. Expedited sourcing available for critical shutdowns.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
