Overhead Crane Practice Test 2025 – Complete Prep Guide

The primary function of the "E" (Emergency) stop on an overhead crane is to remove power to the entire crane. This system is designed as a crucial safety feature, allowing operators to quickly halt all crane operations in case of an emergency situation. By cutting power entirely, it prevents any further movement of the crane, which can help avert accidents or injuries. The emergency stop is a vital component in ensuring the safety of both operators and those working in proximity to the crane, enabling a rapid response to unforeseen incidents.

In contrast, increasing lifting speed, adjusting load weight, or enabling a test mode are functions that pertain to regular operational adjustments and controls, none of which serve the primary safety objective of the emergency stop function. The emergency stop is solely focused on shutting down operations immediately when necessary to prioritize safety.