1. By Finn Haugen (finn.haugen@usn.no)
Course PEF3006 Process Control Fall 2017
Controllers
By Finn Haugen
PEF3006 Process Control. USN. F. Haugen. 2017

2. Where is the controller in the control loop?
PEF3006 Process Control. USN. F. Haugen. 2017

3. PEF3006 Process Control. USN. F. Haugen. 2017
Process Controller
(ECA600, ABB)
PEF3006 Process Control. USN. F. Haugen. 2017

4. Process Controller cont. Digital communication
Backplane of ECA600:
AO = Analog Output
(from controller)
= Control signal
to the actuator
AO signal ranges:
4 – 20 mA (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 mA (most popular)
or 0 – 5 V or 0 – 10 V
PEF3006 Process Control. USN. F. Haugen. 2017
Digital communication

5. Process controller cont. (Compact FieldPoint, National Instruments)
From User’s Manual
(Compact FieldPoint, National Instruments)
Basic
features
PEF3006 Process Control. USN. F. Haugen. 2017

6. PEF3006 Process Control. USN. F. Haugen. 2017
Another example:
ABB CM50
PEF3006 Process Control. USN. F. Haugen. 2017

7. CM50 comes with several templates of control structures.
Example:
Which control structures are above?
PEF3006 Process Control. USN. F. Haugen. 2017

8. Automation Controller (PAC) (Compact FieldPoint, National Instruments)
Programmable
Automation Controller (PAC)
(Compact FieldPoint, National Instruments)
PEF3006 Process Control. USN. F. Haugen. 2017

9. Programmable Logical Controller (PLC)
(FX2N, Mitsubishi)
PEF3006 Process Control. USN. F. Haugen. 2017

10. More modern family of PLCs
(Allen-Bradley)
PEF3006 Process Control. USN. F. Haugen. 2017

11. (Supervisory Control and Data Acquisition)
SCADA system
(Supervisory Control and Data Acquisition)
PEF3006 Process Control. USN. F. Haugen. 2017