8920-PS-DC Control Protector MTL PAC8000

Description

8920-PS-DC Control Protector MTL PAC8000

8920-PS-DC Control Protector MTL PAC8000

Harsh and hazardous environments

The SafetyNet System is as rugged as the other MOST Process Control Components: -40ºC to +70ºC operating ambient temperature; Zone 2 or Class 1 Division 2 hazardous area mounting; G3 corrosion resistance; and enhanced shock and vibration capability. The system will operate in the most extreme environments found in process industries, allowing remote mounting and a truly distributed architecture in even the most demanding situations.

Event Logging and Sequence of Events Recording

The SafetyNet System has the same Event Logging and Sequence of Events (SOE) recording capability as the MOST Process Control System. Data received from SafetyNet Modules is time-stamped by the SafetyNet Controller with a resolution of better than 200ms (this is dependent on the execution cycle – small nodes will deliver better resolution). Data from dedicated (non-SIL) SOE modules is time-stamped with a resolution of less than 0.25ms between different channels of the same SOE module and less than 1ms between channels from different SOE modules. The SafetyNet Controller can record up to 8000 events before its event data buffer begins to be overwritten by new data.

Reduced cabling and termination costs

In common with the MOST Process Control Components, the SafetyNet System offers users the opportunity to significantly reduce their spending on wiring and termination costs. Moving control and safety hardware out of the control room and on to the plant gives significant savings. The Field Terminal design allows users to avoid unnecessary spend on marshalling cabinets, cross wiring and marshalling terminals. Integral tagging and fusing further simplifies cabinet design and installation.

The entire DCS control system consists of one engineer station, several operator stations, and one control cabinet. At the same time, the engineer station is also responsible for transmitting boiler operation data to the entire plant information center. One control cabinet consists of two decentralized processing unit cabinets, one signal terminal cabinet, a power cabinet, and network communication. The decentralized processing unit cabinet adopts a redundant CPU structure and connects various intelligent I/O templates through network communication processing modules to ensure the real-time data of the entire monitoring system. The power supply of the power cabinet is a dual regulated power supply output from the UPS, which is converted internally and outputs 5V, 24V, and 48V working power to other control cabinets in a dual redundant mode. Redundant switches are configured in network communication to ensure smooth real-time data communication network.

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