3BDZ000398R1 RLM01 ABB  Multi-Function Processor Module

The following preliminary values (or applicable ranges) of dimensions are to be used in the early stages of a ship project study. These dimensions have to be checked during the technical drafting process with regard to the applied ship fit:

− The maximum obtainable vertical measure (“E”) for the Propulsion Module is ship specific, and subject to the calculated hydrodynamic forces.

− The double bottom fit standard thickness (“G”) is fixed but within certain limits the Steering Module bottom can be cut out on ship-specific design basis.

− The eventual Cooling Air Unit detail selection may slightly alter the related dimensions. (“H”, “K” and “L”).

The fully electro-mechanic steering gear allows unlimited steering of the Propulsion Module. The main components of the system are: Electric Steering Control Unit (ESCU), inverter Steering Drives (SD1...4) steering motors, reduction gears, pinions, gear rim, slewing bearing and slewing seals

The steering motors are of the asynchronous induction type and each is driven by its own (inverter type) steering frequency converter. The typical Steering Module configuration includes four motors, depending on the ultimate torque requirements.

A self-arming torque overload clutch is provided on the shaft between each steering motor and reduction gear. The planetary reduction gear transfers the torque from each electric steering motor to the respective pinion. Each steering motor is fitted with a fail-to-safe (normally spring shut) steering brake to prevent unwanted motion of the pod in case of a technical eventuality or when all the steering drives are off.

Each pinion is made of hardened steel and the gear teeth are machined directly to the shaft of the pinion. The pinion bearing arrangement consists of two roller bearings. The gear rim transfers the torque from the pinions to the Propulsion Module and is made of hardened steel and bolted to the slewing bearing. The bearings and the whole gear assembly are lubricated with oil by bath and splash lubrication. The three-row roller type slewing bearing supports the weight of the Propulsion Module and enables it to steer around its vertical axis.

The structure and details of the product：

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