Encoders for the crane industry

Trolley control depends on quick, precise and reliable encoder feedback for predicable results based on operator input. Incremental Leine Linde encoders are used for speed feedback to drives controlling the trolley motors, while absolute encoders on the trolley drum are used to measure position.

Strain sensors provide data that can be used for bending moment calculations as well as fatigue load monitoring. This data is vital for the main structural parts such as the boom of the crane. Thanks to the pure digital data transmission, an easy connection to the crane automation system is already prepared.

For the crane main hoist, Leine Linde’s incremental encoders are used for speed and position monitoring and to detect overspeed, underspeed or standstill. Absolute encoders mounted on the drum provides position data and to provide speed related alarms, sometimes through a separate speed monitor. Encoders with integrated functional safety (FSI) can be connected directly to a safety loop or emergency brake.

Spreader control requires fast and precise encoder feedback that will produce repeatable and reliable results for the operator. Leine Linde incremental encoders is the perfect, robust solution for the speed control while our absolute encoders, are used for position measurement.

Make sure the power cable is not stretched and damaged by using an encoder to keep track of the cable reel’s position.

For efficient, just-in-time operations in the harbor, STS, RTG and RMG cranes need to move to a new position several times per day. For these crane types, Leine Linde encoders provide accurate gantry position feedback through a wide variety of fieldbus and communication protocols.

Leine Linde offers a wide range of accessories for our encoders. This is a selection relevant for crane applications. Please contact your nearest Leine Linde sales office if you have a specific request.