Rolls-Royce Description of equipment for bow tunnel thrusters
Cabinets
Electronic unit (one per unit)
The electronic unit is designed for bulkhead mounting and should be mounted in the instrument room or nearby the bridge. (Note! Electronic unit must not under any circumstances be removed from the electronic cabinet and mounted into any console separately). Cable access is through a coverplate that can be removed for fitting of cable glands. Location of the unit should be selected due emphasis on service access.
The electronic unit contains the following:
- Power supply
- Application CPUs (Main and backup) including flash memory
- CAN fieldbus
- Ethernet communication with control panels
- I/O cards (DI, DO, AI, AO, serial line interfaces)
- Circuitry monitoring w/alarm output
- Indication circuitry
- Cable termination
Power Supply requirement:
Main supply : 230 VAC (+/- 15%) 50/60 Hz
Back-up supply : 24 VDC (+20% - 17%) (Battery back-up)
Power consumption: : Typical 100 - 200 watt
The Remote Control System is designed to accomplish prevailing rules of DNV, ABS, LRS, BV, GL and RINA.
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