DeltaV SIS process safety system: the innovation benchmark of intelligent safety instrument system

introduction
Emerson’s DeltaV SIS™ process safety system is the representative of the new generation of safety instrumented system (SIS), which improves the availability of safety instrumented functions through predictive field intelligence technology. As the world’s first intelligent SIS logic solver, its design gives consideration to flexibility, compliance and network security, and it is suitable for SIL 1 to SIL 3 security applications.

Core advantage

Intelligent diagnosis and high availability
85% of SIS failures come from field instruments and actuators. DeltaV SIS can diagnose faults in real time through HART protocol, which can reduce false trip, prolong process running time and reduce life cycle cost.
Flexible deployment mode
Support deep integration with traditional DCS interface or DeltaV DCS, and realize seamless operation of workstations while maintaining functional independence (hardware, software and network isolation).
Compliance guarantee
Automatically meet the strict requirements of IEC 61511, such as data verification of HMI parameter modification, to ensure the accuracy of data writing of logic solver.
Extensible architecture
SLS 1508 logic solver has built-in dual CPU and 16-channel I/O, which can be extended without additional processor. The scanning rate and memory occupation have nothing to do with the system scale.
Key technical characteristics

Redundancy design: SLS 1508 runs in redundant pairs, with no division between master and slave, no disturbance in failover, and supports online replacement.
Network security: The world’s first security system certified by ISA SSA Level 1 (based on IEC 62443) has a defensive architecture.
Event sequence record: Time stamp record with 1ms resolution, which supports quick location of the first fault.
hardware configuration

Logic solver: 16-channel flexible I/O (supporting HART and discrete quantity), optical isolation (1500V DC) and IP20 protection.
Communication network: local peer-to-peer bus (SISNet) and optical fiber remote ring network to ensure data synchronization and redundancy.