Valve Control and Monitoring System (VCMS) Praxis

The Mega-Guard VCMS consists of Operator Workstations with dedicated mimic diagrams (cargo handling, ballast control, anti heeling and fuel oil transfer) connected to Distributed Processing Units which are built-up with Control Processors, I/O Modules and Serial link I/O Modules. Sensors (level, temperature, pressure, etc.), valves and pumps are directly connected to the I/O Modules and Serial link I/O Modules. The Operator Workstations and the Distributed Processing Units are interconnected via a redundant Ethernet link. The whole system is operating on 19-32VDC supply voltage and moving parts such as hard disk drives are not applied; solid state disks are used instead. The Mega-Guard VCMS is the most reliable system with a MTBF which outperfoms our competitors because of these facts.

 

The software of Mega-Guard VCMS is standardized as control functions are written with IEC61131 -3 compliant building blocks. This guarantees proper and standardized documentation of each control function in order to allow for easy operation and maintenance by ship's crew as well.