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CP451-50 S2  SEM Sequence of Events Manager (for Vnet/IP and FIO)

This GS (General Specifications) describes the specifications of the Sequence of Events Manager (SEM). The SEM captures, records and displays in chronological order the sequence of events (SOE) prior to and during a plant trip.
The SEM provides a means of recording activities leading to a potential plant upset or trip.
The SEM offers the following benefits:
• High-speed capturing of events with one millisecond time stamp resolution
• SOE inputs available for use as control and or monitoring signals
• Accurate system time synchronization across a Vnet/IP system without additional hardware

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Essential details：CP451-50 S2  SEM Sequence of Events Manager (for Vnet/IP and FIO)

This GS (General Specifications) describes the specifications of the Sequence of Events Manager (SEM). The SEM captures, records and displays in chronological order the sequence of events (SOE) prior to and during a plant trip.
The SEM provides a means of recording activities leading to a potential plant upset or trip.
The SEM offers the following benefits:
• High-speed capturing of events with one millisecond time stamp resolution
• SOE inputs available for use as control and or monitoring signals
• Accurate system time synchronization across a Vnet/IP system without additional hardware
• Time synchronization with Simple Network Time Protocol (SNTP) server (Option)
• Trip Report for a specified time period upon occurrence of user defined triggers
• Long-term data storage and automatic trip report generation
• SOE data output to OPC clients (e.g. Exaquantum)
• SOE viewing and reporting at multiple Human Interface Stations (HIS) and/or any other PCs via Ethernet
• SOE viewing and reporting that integrate SOE messages with process alarms and other process related events

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CP451-50 S2  SEM Sequence of Events Manager (for Vnet/IP and FIO)

The SEM is designed to capture the events using SOE digital input modules (ADV151-E) and High Speed protection modules (AGP813-S). These modules apply time stamp and send the SOE data from the
Field Control Station to the SOE Server via Vnet/IP. An open communication bus of Vnet/IP is used for SOE data transmission. The SOE data is sent to the SOE Server, stored in the SOE Server and displayed in chronological order on the SOE Viewer screen. As the SEM employs a Server/Client (Viewer) architecture, the SOE data stored in the SOE Server can be easily accessed from multiple HISs and/or any other PCs via Vnet/IP. The SEM consists of the following system components with the appropriate SEM software.
l Field Control Station (Model: AFV0)
The following FCS models can provide an interface to transfer time-stamped SOE data from SOE digital input modules to the SOE Server.
• AFV30S Field Control Unit (for Vnet/IP and FIO, 19” Rack Mountable Type)
• AFV30D Duplexed Field Control Unit (for Vnet/IP and FIO, 19” Rack Mountable Type)
• AFV40S Field Control Unit (for Vnet/IP and FIO, with Cabinet)
• AFV40D Duplexed Field Control Unit (for Vnet/IP and FIO, with Cabinet)
• AFV10S Field Control Unit (for Vnet/IP and FIO, 19” Rack Mountable Type)
• AFV10D Duplexed Field Control Unit (for Vnet/IP and FIO, 19” Rack Mountable Type)

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