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    A provision designed to automatically stop or safely control any motion in which a malfunction occurs.

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    A method for providing power to a hoist traveling along a beam.

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    The wiring required after erection of the crane.

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    An axle which is fixed in the truck and on which the wheel revolves.

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    A crane which is pendant controlled by an operator on the floor or an independent platform

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    A special type of adjustable frequency motor control, utilizing an incremental encoder to constantly monitor the speed and direction of the motor shaft. This "closed-loop" system allows the control to know what the motor is doing at all times. Flux vector control provides a wide range of speed and reliability in hoisting applications where no mechanical load brake is utilized.

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    The walkway with handrail and toeboards, attached to the bridge or trolley for access purposes.

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    FPM

    Feet Per Minute