The Trainer provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of pressure control.
The air pressure control system is a 2nd order system. It comprises two in-line pressure tanks interconnected by a flow control valve. An additional valve on the second tank makes air tapping possible and so can be used to simulate a disturbance variable. A pressure sensor measures the pressure in the second vessel. The controller used is a state-of-the-art digital industrial controller. The actuator in the loop is a pneumatically operated control valve with a standardized current signal input. The controlled variable X and the manipulating variable Y are plotted directly on an integrated 2-channel line recorder. Alternatively, the variables can be tapped as analogue signals at lab jacks on the switch cabinet. This enables external recording equipment, such as an oscilloscope or a flatbed plotter, to be connected.
FEATURES:
•    Experimental introduction to control engineering using an example of pressure control
•    Construction of the system with components commonly used in industry
•    Digital controller with freely selectable parameters: P, I, D and all combinations
 
SPECIFICATION:
2 pressure tanks
•    Capacity: each 10L
•    Pressure: 10bar
•    Operating pressure: 6bar
Pressure sensor: 0…6bar
Pneumatically operated control valve
•    Connecting flanges: DN15
•    Kvs: 0,1m3/h
•    Reference variable: 4…20mA
•    Stroke: 15mm
•    Characteristic curve equal-percentage
Line recorder
•    2x 4…20mA
•    Feed rate 0…7200mm/h, stepped
Controller
•    Process variables X, Y as analogue signals: 4…20mA
•    Power required for operation
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase