Yokogawa ProSafe-RS Safety Instrumented System
Description
The Best and Most Dependable Partner for Safety Excellence：
With its industrial automation solutions, Yokogawa is committed to being a vigilant partner for its customers and to helping them achieve Operational Excellence, Asset Excellence, and Safety Excellence. One such core solution is the ProSafe-RS safety instrumented system (SIS), which plays a crucial role in ensuring plant safety and draws from our supremely reliable distributed control system (DCS) technology and strong track record in the DCS and SIS businesses. Before ProSafe-RS, DCSs and SISs were typically supplied by different vendors and required extra engineering for the individual systems and interconnections. Furthermore, these systems were more difficult to master and operate as they had different interfaces. ProSafe-RS overcomes these hurdles through complete integration with Yokogawa’s CENTUM DCS – an industry first. The ProSafe-RS has been a global success since its debut in 2005, and is continually being improved.
The Best Safety Architecture：
With its advanced diagnostics and dual redundant architecture in every module, ProSafe-RS achieves a high safety integrity level (SIL) and is highly reliable. All of the communication paths within the modules as well as links to other modules and systems are dual redundant as well. The unique architecture of this Yokogawa system ensures maximum safety and reliability.
The Best Performance：
A high-speed CPU with a large memory ensures sufficient process safety time, even with large systems. With its outstanding scalability and suitability for widely distributed applications, this system offers both flexibility and unsurpassed performance, whatever the configuration.
The Best System Integration：
Through its tight integration with control systems and asset management systems, the Yokogawa ProSafe-RS delivers Operational Excellence, Asset Excellence, and Safety Excellence to oil and gas upstream and downstream operations and to chemical, power, and steel plants.
The Best Lifecycle Support：
With a variety of tools and functions, Yokogawa offers assistance and support through all phases of the plant lifecycle, from engineering to operation and maintenance. And through our global network of safety engineers and offices, we are well positioned to provide on-site support to our customers around the world.
The Best Safety Architecture : SIL3 and high availability through VMR technology
The Best Safety：
ProSafe-RS has a unique and excellent dual architecture that is based on Yokogawa’s supremely reliable DCS technology. The SIS has a modular design, and dual architecture is implemented inside each module . And the modules themselves can be installed in a dual redundant configuration. This is controlled by the SIS and is fully transparent to the user. This approach maximizes both safety and availability, independently and simultaneously. This flexible system configuration makes it possible for the user to configure redundancy on a module by module basis, achieving the required availability in each system component.
What is VMR ?
When an even higher level of system availability and fault tolerance is required, ProSafe-RS can be made dual redundant by simply plugging in an additional card. This flexible plug-in capability is called “VMR/Versatile Modular RedundancyTM”. Because the I/O and processing functions of ProSafe-RS are modularized right down to the function level, redundancy can be applied exactly where it is needed – to the input, output, and processor modules – providing the perfect combination of safety and economy. Any mix of dual redundancy can be configured. For example, users may opt for a single input module and dual redundant output modules, or dual redundant input modules and a single output module.
VMR:
By having a fully redundant configuration for extreme robustness, it is possible to maintain SIL3 even when the followings occur:
• Input failures
• CPU failures
• Output failures
Unlike systems which rely entirely on redundancy to achieve safety and availability, VMR does not have a degradation mode, nor does it impose time limitations on such a mode.
The Best Performance : First-rate processing and a compact size
The Best Performance:
Based on Yokogawa’s long experience in industrial automation, ProSafe-RS has been designed with a very high level of reliability and safety. As all safety loops require a quick response, ProSafe-RS can execute safety logic at world-class speeds of up to 50 ms, and allows many inputs and outputs to be scanned rapidly, meeting any application requirement.
The Best Performance : The wise choice for applications spread over a wide area
Module Selection:
I/O modules accommodate various signal ranges and levels including 4-20 mA, 1-5/1-10 V, TC, RTD, 24/48 V DC, and 120 V AC. For analog inputs, measurement outside the standard ranges is also possible. For example, as current levels in a 0-25 mA range can be measured, errors in a process or in a field device can be detected. And for 24 V DC outputs, various types of modules can be selected according to the output capacity and purpose. In addition to conventional I/O modules for specific signal types, ProSafe-RS can offer the N-IO module, which handles different signal types: DI/DO/AI/AO at each channel. All I/O modules have a line monitoring function for safety loops. The 4-20 mA input/output modules have a HART communication bridge function as a standard feature. The communication modules support the Modbus protocol.
Environmental Robustness:
The safety control unit can withstand ambient temperatures ranging from –20°C to 70°C (–4°F to 158°F). Fans are available for high-temperature environments. It is thus possible to ensure safety at temperatures that are beyond the normal working temperature range of a DCS.
The Best System Integration : One network control of plant operation
One Network:
ProSafe-RS can function as an independent SIS, but is designed to deliver even greater benefits when used in combination with a DCS (CENTUM), CI Server, and asset management system (PRM). These Yokogawa systems can all be integrated on Yokogawa’s Vnet/IP network, thus eliminating the time and cost of constructing separate networks for the control and safety instrumented systems. In addition, the precise time synchronization function of Vnet/IP keeps the times in all integrated systems accurately synchronized (±1 ms within the same domain, ±5 ms across different domains), thus maintaining outstanding system reliability.
The Best System Integration : One window access to plant information:
One Window:
Integration of the DCS with the SIS brings various benefits that are not possible with non-integrated systems. These include an operating environment with a unified user interface, integrated field device management, and remote engineering. Since the ProSafe-RS meets the control and safety segregation requirements specified by IEC 61508 when integrated with a DCS such as CENTUM and a SCADA such as CI Server, it has been accredited by TÜV as an IEC 61508-certified integrated system. This makes it possible for users to design the ideal system for their processes, from upstream to downstream.
Stock part list:
SAI143-S33
SAI533-H33
SCP451-11
SCP451-51
SCP461-11S1
SCP461-51S1
SDV144-S13
SDV144-S53
SDV144-S63
SDV541-S53
SDV541-S63
SSB401-53
SPW482
SEC401-51
Post time: May-22-2026