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IMACS is an Integrated Monitoring, Alarm and Control System for engines and machinery onboard ships.
The system is :
* PLC based system – Commercial Off The Shelf hardware
* Full redundancy of CPU, BUS and work stations
* History Analysis of data and alarms (Multi sensor analysis)
* Data transfer to shore-side office
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SIEMENS Simatic-S7 PLC in Central Station
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* Use of available COTS (Commercial Off The Shelf) hardware eliminates the dependence on dedicated, more expensive and less accessible marine spare parts; enabling easy service and/or repair anywhere in the world.
* Fault finding and maintenance are very easy due to the SIMATIC-S7 PLC Push-Pull modules that can be replaced in no time.
* Each work station can take over the entire system regardless of other stations failure (work station redundancy).
* Full redundancy of CPU and BUS – Automatic take over if one PLC fails.
* Other computers on ship’s LAN can log into the system at will (for monitoring only).
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Substation for I/O connections
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* Online screen monitoring of all relevant information
* Control of machinery (valves, pumps, generators etc.) from smart mimics
* Graphical representation of data with time (Trend Analysis) for all variables.
* Easy settings of alarm set points and delay times, easy calibration of sensors by software.
* Critical operations are restricted by password to authorized personnel only.
* Logging and retrieval of data for long periods of time.
* Offline analysis of data from History files (Alarm statistics and Multi Sensor Analysis) - an excellent tool for easy preventive maintenance.
* Office - Version for shore supervision provides extensive offline analysis of both data and alarms (whole month data on CD-R or just “Last Hour File” by Email).
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Engine Control Room with IMAC-Workstations
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Redundancy:
Two Siemens S7-400 PLC units in full redundancy one PLC is the Master, the other one is the Stand -By.
Active Bus:
Replacement of I\O cards is done with a single flat-cable connector and can be changed while system is active.
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Schematic of Lay-Out for Installation in Gdynia
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Click here for a complete PowerPoint-Presentation of the IMACS (6.1 Mb)
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