Course PEF 3006 Process Control Fall 2017 Controllers

Course PEF 3006 Process Control Fall 2017 Controllers By Finn Haugen (finn. haugen@usn. no) PEF 3006 Process Control. USN. F. Haugen. 2017 1

Where is the controller in the control loop? PEF 3006 Process Control. USN. F. Haugen. 2017 2

Process Controller (ECA 600, ABB) PEF 3006 Process Control. USN. F. Haugen. 2017 3

Process Controller cont. Backplane of ECA 600: AO = Analog Output (from controller) = Control signal to the actuator AO signal ranges: 4 – 20 m. A (most popular) or 0 – 5 V or 0 – 10 V AI = Analog Input (to controller) = Measurement signal from the sensor AI signal ranges: 4 – 20 m. A (most popular) PEF 3006 Process Control. USN. F. Haugen. or 0 – 5 V or 0 – 10 V 2017 Digital communication 4

Process controller cont. From User’s Manual (Compact Field. Point, National Instruments) Basic features PEF 3006 Process Control. USN. F. Haugen. 2017 5

Another example: ABB CM 50 PEF 3006 Process Control. USN. F. Haugen. 2017 6

CM 50 comes with several templates of control structures. Example: Which control structures are above? PEF 3006 Process Control. USN. F. Haugen. 2017 7

Programmable Automation Controller (PAC) (Compact Field. Point, National Instruments) PEF 3006 Process Control. USN. F. Haugen. 2017 8

Programmable Logical Controller (PLC) (FX 2 N, Mitsubishi) PEF 3006 Process Control. USN. F. Haugen. 2017 9

More modern family of PLCs (Allen-Bradley) PEF 3006 Process Control. USN. F. Haugen. 2017 10

SCADA system (Supervisory Control and Data Acquisition) PEF 3006 Process Control. USN. F. Haugen. 2017