SCP451-51 Yokogawa Safety Processor Module

Yokogawa SCP451-51 S1 ProSafe-RS Processor Module

Yokogawa SCP451-51 S1 ProSafe-RS Processor Module

Availability: 20 left in stock

Yokogawa SCP451-51 S1 ProSafe-RS Processor Module The Yokogawa SCP451-51 S1 serves as the primary SCP451-51 Processor Module utilized to execute...

SKU: SCP451-51 S1

Manufacturer: Yokogawa
Product No.: SCP451-51 S1
Product Type: Safety System Processor Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa SCP451-51 S1 ProSafe-RS Processor Module

The Yokogawa SCP451-51 S1 serves as the primary SCP451-51 Processor Module utilized to execute deterministic safety control cycles and real-time logic execution across ProSafe-RS Safety Instrumented Systems and CENTUM VP DCS platforms.

Suffix Breakdown & Model Matrix

Suffix Code	Option Code	Description / Specification Detail
-51	--	Standard type processor module without explosion protection
S1	--	Revision variant with ISA Standard G3 harsh environment compliance

Hardware Specifications

Parameter	Specification
Model	SCP451-51 S1
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg (net module), 0.7 kg (gross packaged)
Dimensions	120 mm x 25 mm x 130 mm (module base), 160 mm x 60 mm x 210 mm (shipping container)
Operating Temp	0 deg C to +55 deg C
Power Consumption	6.0 W (5 VDC at 1.2 A)
Processor Architecture	32-bit RISC Processor
Cycle Execution Time	Deterministic cycle time <= 100 ms
On-Board Memory	32 MB Program Memory, 64 MB Data Memory
Communication Interfaces	ESB/ER Bus for I/O modules, Vnet/IP for network system integration
Isolation Voltage	1500 VAC for 1 minute
Redundancy	Dual-redundant CPU operation supported
Operating Humidity	10 to 95% RH (non-condensing)
Environmental Compliance	ISA-71.04 Class G3 Compliant

Channel Isolation & 4-20 mA HART Protocol Integration

The hardware architecture provides robust channel-to-channel isolation rated at 1500 VAC for 1 minute across the backplane bus, isolating internal processing logic from field signal transients. Designed to operate within process automation topologies, the module manages real-time synchronization between 4-20 mA HART loop protocol communications and high-speed Vnet/IP control buses. Integrated cold junction compensation algorithms process field instrumentation inputs without adding latency to the internal watchdog timer or cycle execution engine.

Frequently Asked Questions

Q: How does the SCP451-51 S1 execute dual-redundant processing without interrupting control loop cycles?

A: Dual SCP451-51 S1 modules operate in a primary and secondary redundant pair over a shared backplane. Memory register states synchronize continuously across an equalization bus. If a self-diagnostic routine or watchdog timer detects a failure on the primary unit, control passes to the secondary unit within a single scan cycle without process disturbance.

Q: Can the SCP451-51 S1 module be installed or replaced while the backplane is energized?

A: Hot-swap replacement is supported provided the node contains a redundant processor active in the field control unit rack. Standard electrostatic discharge protection and mechanical insertion alignment protocols must be followed to avoid transient voltage surges on the 5 VDC supply rail.

Q: What environmental conditions does the S1 suffix variant accommodate?

A: The S1 variant conforms to ISA Standard G3, providing conformal coating layer protection against atmospheric corrosive gases (such as hydrogen sulfide and sulfur dioxide) in harsh chemical process environments.

Field Installation Guidelines

Backplane Connector Inspection: Before inserting the module into the Field Control Unit rack, verify that backplane pin headers and guide rails are free from debris and physical deformation.
Equipotential Grounding: Connect the mounting rack to functional earth (FE) using copper wire with a minimum cross-sectional area of 5.5 mm2. Shielded field cables must terminate at a single point ground bar with impedance under 1 ohm to mitigate common-mode noise.
Bus Line Isolation: Maintain physical separation between Vnet/IP network communications cables, ESB/ER bus lines, and AC power cabling. Use dedicated cable trays or conduits with a minimum spacing of 200 mm to suppress electromagnetic interference.
Unused Slot Seals: Maintain protective blank covers over all empty rack slots to preserve proper cooling airflow profiles and enforce ISA G3 environmental protection standards.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.