Crane Glossary
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PENDANT PUSHBUTTON STATION:
Means suspended from the crane operating the controllers from the floor or other level beneath the crane.
PITCH DIAMETER (ROPE):
Distance through the center of a drum or sheave from center to center of a rope passed about the periphery.
PLAIN REVERSING CONTROL:
A reversing control which has identical characteristics for both directions of motor rotation.
PLUGGING:
A control function which accomplishes braking by reversing the motor line voltage polarity or phase sequence.
PROTECTIVE PANEL:
An assembly containing overload and undervoltage protection for all crane motions.
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