APA2107QBC/D

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Actual-position-Responsive Control (APR) or Apparent Position Control (APC) may be the simplest type of control scheme used for centralized or distributed control of discrete applicaitons. The basic concept of this scheme is to measure the actual position of the control point, compare it to the desired position and then act through some type of actuator to move the control point to the desired position. An example would be a door that needs to be opened and closed. The desired position is typically determined by a timer, a digital input, or a modulating controller.

APC may be used for a wide range of discrete applications, such as controlling valves, opening/closing doors and gates, controlling the speed of a conveyor, and many others. This type of control is also suitable for providing safety control for applications such as safety fences, access doors, lift gates and so on. The primary advantage is that the control is always accurate because it is based on real-time feedback from an actual position. Additionally, if a fault arises on the control system, the system will simply stay in the same position.

APC systems employ two classes of components, an actuator and a controller. A controller is responsible for processing the data from the sensors and sending commands to the actuator. The actuator is responsible for changing the physical state of the application based on the commands from the controller. Typical components of APC systems include a sensor for measuring the position of the control point, an actuator for changing the state of the control point, a controller for processing the data from the sensor, and a power source. The main type of actuator used in APC systems is a solenoid. Other types of actuators may be used, depending on the type of application.

When choosing an APC system, it is important to consider factors such as the accuracy of the control system, the number of control points, the amount of power required, and the amount of maintenance required. Additionally, the APC system should be designed with safety in mind if the application requires it. If the system is used for safety purposes, then additional safety features may need to be incorporated into the design.

APC systems can provide a cost effective way of controlling discrete applications and can be used in a wide variety of applications. They are often used in applications such as door control, conveyor control, and process control. Additionally, they may provide advantages over other types of controllers, such as increased accuracy and reduced maintenance requirements.

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