The circuit described as rapid-traverse, slow feed moves the actuator how?

• A. Rapid then slow
• B. Slow then rapid
• C. Constant speed
• D. Variable with no pattern

Answer: (A)

The main idea is that actuator speed in a hydraulic circuit is controlled to move fast for the majority of the travel and then slow down for precise positioning. In a rapid-traverse, slow-feed setup, the valve arrangement first gives a high flow to the actuator, letting it cover the bulk of the distance quickly. As the actuator nears the commanded position, the flow is reduced to a metered, restricted path, so the motion slows down for accurate positioning and to minimize overshoot. So the actuator moves rapidly at first and then slows down as it approaches the target. This pattern is what makes sense for rapid-traverse, slow-feed control.