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- Yokogawa
- SCP451-11-S1
- Processor Module
- Japan
- 123 mm Γ 122 mm Γ 100 mm
- 1.4kg
- Xiamen, China
- New & In Stock
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π Product Overview β Yokogawa SCP451-11-S1
The SCP451-11-S1 is a logic control processor module designed for high-integrity Safety Instrumented Systems (SIS), particularly for use in the ProSafe-RS series. It performs critical safety logic execution and manages communication between safety input/output modules and higher-level control networks.
This model complies with SIL-3 (Safety Integrity Level 3), delivering deterministic real-time safety logic processing. It is optimized for mission-critical applications such as emergency shutdown systems, fire and gas detection, burner management, and high-integrity pressure protection.
π Technical Specifications β SCP451-11-S1
| Parameter | Specification |
|---|---|
| Model | SCP451-11-S1 |
| Type | Logic Processor Module |
| Application | Safety Instrumented System (SIS) controller |
| Processing Capacity | High-speed safety logic execution |
| Memory | 64 MB (Non-volatile), 32 MB RAM |
| Communication Interfaces | ESB Bus, Vnet/IP (via system integration), RS-232 |
| SIL Certification | SIL-3 compliant (IEC 61508) |
| Diagnostic Features | Built-in self-checks, watchdog timer, fault isolation |
| Power Supply | 24 V DC (via backplane) |
| Operating Temperature | β10 Β°C to +55 Β°C |
| Storage Temperature | β40 Β°C to +85 Β°C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
| Vibration Resistance | 2.5 g RMS (10β500 Hz) |
| Shock Resistance | 10 g (11 ms half-sine) |
| Mounting | DIN-rail / system rack |
| Dimensions (H Γ W Γ D) | 123 mm Γ 122 mm Γ 100 mm |
| Weight | 1.4 kg |
| Protection Class | IP20 (front panel) |
| Certifications | CE, UL, CSA, ATEX, IECEx, SIL-3 |
π Applications
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Emergency Shutdown Systems (ESD) β Executes logic that initiates plant shutdowns during critical process failures.
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Fire & Gas Detection Systems (FGS) β Processes input from flame or gas detectors and triggers alarms or actions.
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High Integrity Pressure Protection Systems (HIPPS) β Ensures that pressure thresholds are not exceeded by commanding control valves.
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Burner Management Systems (BMS) β Coordinates complex interlock logic for burner operation and shutdown.
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Tank Overfill Prevention Systems (TOPS) β Calculates input from level transmitters and controls shutoff valves to prevent spills.
β Product Advantages
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SIL-3 Compliant Safety Control β Enables full implementation of certified safety loops.
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High Processing Speed β Ensures reliable execution of real-time safety logic with no latency.
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Integrated Diagnostics β Automatically detects internal faults, communication errors, and memory integrity.
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Compact & Modular β Fits neatly into safety system racks or panels; easy to replace or scale.
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ProSafe-RS Native Compatibility β Seamlessly integrates with the entire safety system architecture.
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Fail-Safe Operation β Automatically transitions to a predefined safe state in the event of hardware or communication failures.
π·οΈ Brand & Series
| Field | Description |
|---|---|
| Brand | Yokogawa |
| Product Series | ProSafe-RS |
| Product Category | Safety Logic Processor Module |
π Related / Same-Series Models (5 Models)
| Model | Description | Key Specifications |
|---|---|---|
| SCP451-53 | 4-Channel Analog Output Module | 0β20 mA/0β10 V outputs, 12-bit, 1.5 kg |
| SCP451-51 | Safety Communication Module | Controls I/O data exchange, ~1.3 kg |
| SCP451-DI | Digital Input Module | 16-channel input, high isolation, 1.4 kg |
| SCP451-DO | Digital Output Module | 16-channel output, fault detection, 1.4 kg |
| SCP451-AI | Analog Input Module | 4/8 channel analog input, SIL-3, 1.6 kg |
π Popular Yokogawa Models (5 Recommended)
| Model | Description | Key Specifications |
|---|---|---|
| CP701 | Field Control Station Processor | High-speed control logic, 1.7 kg, dual Ethernet |
| ADV151-P00 | Digital Output Card | 16 outputs, fast relay switching, 0.9 kg |
| ANB10D-420 | Remote I/O Communication Unit | I/O expansion, DIN rail mount, 1.2 kg |
| VI702 | Vnet/IP Communication Card | Ethernet interface, redundant capability, 0.5 kg |
| EC401-51 | I/O Bus Coupler Module | Expands backplane connectivity, 1.1 kg |
β Frequently Asked Questions (FAQ)
Q1: What is the function of the SCP451-11-S1?
A1: It functions as the logic execution module for ProSafe-RS safety systems, handling all real-time safety calculations and interlocks.
Q2: Is this module certified for use in critical safety applications?
A2: Yes, it is certified to SIL-3, the highest level commonly used in industrial safety applications.
Q3: How many logic sequences can it execute?
A3: The number depends on application complexity, but it is designed to execute hundreds of interlocks in real time.
Q4: Can this module be replaced online?
A4: No. For safety reasons, power must be disconnected before replacement.
Q5: What is the communication interface used?
A5: It communicates via ESB Bus or integrates with the system’s Vnet/IP for distributed architecture.
Q6: What happens if the processor fails?
A6: It enters a safe state, and diagnostic alerts are sent to the supervisory system.
Q7: Is it suitable for offshore or hazardous environments?
A7: Yes, with appropriate certifications like ATEX and IECEx, it can be used in hazardous zones.
Q8: What diagnostic features are included?
A8: The module includes self-checks, watchdog timers, memory integrity checks, and fault isolation.
Q9: What power source is required?
A9: It operates from a 24 V DC supply delivered via the ProSafe-RS backplane.
Q10: How heavy and large is the unit?
A10: It weighs 1.4 kg and measures 123 mm Γ 122 mm Γ 100 mm.