Safety System: ProSafe-RS Lite

Engineering

ProSafe-RS Lite is composed of the Safety Engineering PC (SENG) equipped with engineering and maintenance functions, the Safety Control Station (SCS) for safety control and Vnet/IP for control network to communicate with each of those equipment.

ProSafe-RS Lite can be integrated with the CENTUM VP. The SCS can be operated and monitored by the HIS (Human Interface Station) of the CENTUM VP. It is also possible to connect to other DCSs and PLCs via subsystem communication (Modbus communication).

HART communication on ProSafe-RS Lite allows Plant Resource Manager (PRM) to manage the HART communication devices connected to I/O modules on SCS. Also, the AO signal allows PRM client to conduct Partial Stroke Test (PST) on HART-supported valve positioner equipped with the PST function.

One architecture

Seamless architecture achieves true integration of DCS and SIS, contributing to plant optimization.

Expected operational benefits:

• faster project implementation at a lower cost - using just one process network saves engineering design time
• greater operational efficiency - integrated information displays are clearer and more usable
• lower cost of ownership - common control and network architecture standards cut maintenance overhead

Eliminating SIS selection complexities

ProSafe-RS Lite is SIL2 certified in a single module configuration. Redundancy is already built-in to each ultra-compact input, output, and processor card. This intrinsically simple modularity makes it possible to design systems with ease. If additional system availability is required, users can add redundancy on a function by function basis by simply plugging in the appropriate module.

Automation Design Suite (AD Suite)

ProSafe-RS Lite features AD Suite, the same engineering environment used with the CENTUM VP integrated control system, allowing the integrated management of CENTUM VP and ProSafe-RS Lite data.
With this feature, ProSafe-RS Lite engineers can use AD Suite to design the I/O.
AD Suite also has functions for managing the change history and recording changes that save time when renovating systems.

Better Operations, easier Engineering and Hardware Reduction

FGS (Fire & Gas System)

• Standard FGS HMI parts for gas, flame, smoke and heat detectors are added for better operations.
• Standard function blocks for FGS detectors are added for easier engineering.
• ProSafe-RS Lite analog module can reset smoke and heat detectors alarms without additional hardware such as relays and DO modules.

The logical solution for perfect control

One network

ProSafe-RS Lite plugs directly onto the same network used by Yokogawa's field-proven CENTUM VP. No gateway or interface hardware is required for data exchange between SIS and DCS functions. Safety communication between SIS controllers is realized and certified in a mixed DCS - SIS configuration.

Virtualization Platform

This translates to customer's business centric benefits like smooth migration to new physical hardware with reduced downtime, shorter migration process and system tests time.
From maintenance point of view, segregation of hardware and software maintainability are also the significant advantages.

FIO (Field network I/O)

Features

A single, simple, SIL2 solution

Plug-in availability

Versatile Modular Redundancy (VMR)

Partial Stroke Test (PST)

Under normal conditions, valves that are integrated with a safety instrumented system (SIS) are not activated. (They are only actuated when the SIS initiates a process shutdown after an abnormality is detected in a process.) It is therefore necessary to periodically test valves to ensure that they are in good working order and will respond properly when needed.

This periodic check is called a “proof test,” and generally it involves a full stroke test (completely closing the valves). When a plant is up and running, the costly installation of a bypass is necessary to conduct a proof test. If this is not possible, the only other option for conducting this test is to shut down the plant. As a consequence, proof tests of the valves are usually conducted only once every several years.
 
An alternative to the full stroke test is the partial stroke test (PST), which involves slightly closing a valve to diagnose problems. A PST can be conducted without stopping a process, and it can be performed remotely from locations such as a control room.

By conducting a PST, plant owners can significantly reduce their maintenance costs. And by checking the valves more frequently than is possible with the full stroke test, they can anticipate great benefits such as increased reliability .

Note: although the PST does not eliminate the need for a full stroke test, it makes it possible to extend the proof test interval without sacrificing the required safety level.

Complied Certificate

• TÜV SIL2
• ISASecure CSA 1.0.0 Level 1 *1
  *1: It complies with IEC 62443-4-2 and IEC 62443-4-1 international standards for security in control devices.
  Click here for ISASecure Certification details

Complied Standards

ProSafe-RS system hardware conforms to the standards listed below. Please use the ProSafe-RS system in the industrial environment only.

PLC (Programmable Logic Controller)

• IEC 61131-2

Functional safety

• IEC 61508, IEC 61511-1, IEC 62061

Application

• EN 54-2, EN 298, EN 50156-1, NFPA85, NFPA86, NFPA72

Safety

• CSA
• CE Marking
• EAC Marking
• Morocco Compliance Marking
• UKCA Marking

EMC Standards

• CE Marking EMC Directive
• RCM
• KC Marking
• EAC Marking
• Functional Safety
• Morocco Compliance Marking
• UKCA Marking

Hazardous location equipment

• FM Non-Incendive
• ATEX Ex “ec”
• IECEx Ex “ec”
• ECAS-Ex “ec”
• UKEX-Ex “ec”

Marine Standards

• American Bureau of Shipping (ABS)
• Bureau Veritas (BV)
• Lloyd’s Register
• DNV