MPS PA Compact Workstation

The four process-controlled loops in the MPS PA Compact Workstation can each be operated individually. Using a corresponding controller, the level and flow-control system can be set up as a cascade control system. The design of the sensors and valve actuators allows the use of both continuous (e.g., P, I, PI, PID) and discontinuous controllers (e.g., 2-point controllers). The pump can be controlled using either direct actuation or speed adjustment. With the flow and pressure-control systems, the manipulated variable of the controller can also be used to operate a proportional directional control valve. A two-way ball valve with a pneumatic swivel drive is installed between the elevated tank and the lower reservoir. This can be used to simulate a load for disturbance variable compensation in the level-controlled system.