SSC50D-F2521 Yokogawa Duplexed Safety Control Unit

SSC50D-F2521 Yokogawa ProSafe-RS Duplexed Safety Control Unit

SSC50D-F2521 Yokogawa ProSafe-RS Duplexed Safety Control Unit

Availability: 10 left in stock

Yokogawa SSC50D Safety Control Unit The Yokogawa SSC50D-F2521, also cataloged as the SSC50D Duplexed Safety Control Unit, operates as a...

SKU: SSC50D-F2521

Manufacturer: Yokogawa
Product No.: SSC50D-F2521
Product Type: Safety Control Units
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 13000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa SSC50D Safety Control Unit

The Yokogawa SSC50D-F2521, also cataloged as the SSC50D Duplexed Safety Control Unit, operates as a dedicated hardware component for executing SIL3 safety logic and managing dual-redundant communication within ProSafe-RS Safety Instrumented System (SIS) platforms.

Hardware Specifications

Parameter	Specification
Model	SSC50D-F2521
Brand	Yokogawa Electric Corporation
Origin	Japan
Weight	13 kg
Dimensions	Standard 19-inch rack mount chassis
Operating Temp	-20 deg C to +70 deg C
Power Consumption	240 VA (100-120 V AC), 290 VA (200-240 V AC), 7.0 A (24 V DC)
Processor	MIPS R5000 Processor
Redundancy	Dual-redundant CPU, dual power supplies, dual Vnet/IP ports
Memory Protection	NVRAM with battery backup (3-year cycle at <= 30 deg C)
System Network	Dual-redundant Vnet/IP (100 Mbps full duplex)
Safety Rating	Certified up to SIL3 (IEC 61508 compliant)
Expansion Capacity	Up to 9 Safety Node Units and 78 I/O modules per SCS

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation

The SSC50D-F2521 safety controller coordinates deterministic data exchange between central logic solvers and field I/O racks across dual-redundant Vnet/IP networks. The controller processes process inputs from 4-20 mA HART loop protocol instruments through local and remote I/O nodes. Galvanic channel-to-channel isolation on the backplane interfaces prevents external electrical faults from propagating across redundant CPU modules, ensuring continuous emergency shutdown (ESD) and burner management system (BMS) operations without spurious trip occurrences.

Frequently Asked Questions

Q: How does the duplex CPU architecture handle module fault switching on the SSC50D-F2521?

A: The dual MIPS R5000 processors execute safety logic in lockstep. If a hardware fault occurs on the active CPU card, internal diagnostic circuits initiate a bumpless transfer to the standby processor within a single control scan cycle, avoiding logic disruption.

Q: What mounting precautions must be taken when operating the SSC50D-F2521 above 40 deg C?

A: Forced fan cooling assemblies must be installed directly adjacent to the rack unit when operating in environments between +40 deg C and +70 deg C to maintain thermal equilibrium and protect non-volatile memory components.

Field Installation Guidelines

Install the SSC50D-F2521 unit into a standard 19-inch instrument cabinet, fixing the chassis using four M5 retention screws and applying correct torque to ensure structural grounding. Terminate both primary and secondary Vnet/IP lines with Category 5e or higher shielded twisted-pair cables, ensuring separate cable raceway paths to prevent simultaneous physical media damage. Ground all cable shields directly to the cabinet main earth bar using low-impedance grounding clamps. Ensure adequate clearance at the top and bottom air vents to maintain unobstructed cooling airflow.

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.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

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.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

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.