The Yokogawa SSC10S, operating as the core processing engine of the ProSafe-RS Safety Instrumented System (SIS), functions as a dedicated hardware component for high-integrity safety logic execution. The rack-mount controller processes critical safety loops natively at the hardware tier to drive emergency shutdown (ESD) and fire and gas (F&G) networks.
Hardware Specifications
Parameter
Specification
Model
SSC10S
Brand
Yokogawa
Origin
Japan
Weight
Standard multi-slot rack-mountable controller mass
Dimensions
Standard rack-chassis modular layout geometry
Operating Temp
0 to 55 deg C standard industrial unventilated enclosure tolerances
Power Consumption
Regulated inner logic draw via integrated redundant power supply modules
Processor
MIPS R5000 high-speed RISC processing engine
System Memory
32 MB ECC RAM
Data Retention
Battery-backed memory modules (up to 3 years at less than or equal to 30 deg C)
Redundancy
Parallel dual-redundant processing with hardware synchronization
Communication Buses
Redundant V net and ESB bus interfaces
Product Type
Safety Controllers
High Reliability Safety Control
Triple Modular Redundancy and SIL3 Certification The safety controller is certified for functional safety up to SIL3 compliance frameworks. The hardware architecture utilizes parallel processor synchronization across dual-redundant computational paths, executing identical safety logic instruction sets concurrently to eliminate single points of failure without extending loop execution latencies.
Galvanic Isolation and Fail-Safe State Execution Built-in galvanic isolation boundaries isolate the core logic sub-assembly from external communications lines and internal backplane tracks. This design confines high-voltage transient spikes and inductive noise to the interface boundary, allowing the processor to drive output registers to their defined fail-safe state during critical plant emergencies or field wiring faults.
