In a system with a load that does not require movement through angles greater than 30 degrees, what is typically used?

In a system where movement through angles greater than 30 degrees is not required, a positioner is typically used. A positioner is a device that helps control the position of an actuator. It ensures that the actuator reaches its desired position accurately and maintains it, which is particularly important when the movement does not need to extend beyond a specific range, such as 30 degrees.

Using a positioner in this scenario allows for fine-tuning and precise adjustments over small movements, which is ideal for applications requiring limited angular motion. This approach optimizes performance by effectively managing the minimal range of motion, reducing wear and increasing the longevity of the components involved.

Although servo motors could be used in this situation, they are more suited for applications requiring a wider range of motion and higher precision. Error detectors and limit switches serve different functions in system management—error detectors are designed for monitoring system reliability, while limit switches are used for detecting the position of a moving part, preventing it from exceeding its range. Thus, for systems limited to movements less than or equal to 30 degrees, a positioner is the most appropriate selection.