2000 Series – Configuration for a Refrigeration “Cooling” control loop
This Video Tutorial will show you how to change the Control Action from Reverse Acting Control (Typical Heating Application) to Direct Acting Control (Typical Refrigeration Cooling Application) on a Eurotherm 2000 Series Controller.
The controller is setup as PID Control with Control Action set as Reverse for a typical Heating Application.
We are going to change the Control Action from Reverse (REV) to Direct (DIR) for a typical Refrigeration Cooling application.
First we begin by putting the controller into the Configuration level.
Please note when putting the controller into the configuration level all outputs are shut off from the process. Before doing this, make sure it is safe to do so.
We will be using the four buttons across the bottom of the controller.
The left most button is called the PAGE Button.
The next button to the right is the SCROLL Button.
The next button to the right is the DOWN Button.
The final button to the right is the UP Button.
- First we begin by pressing the Page Button repeatedly until you see the ACCS List.
- Press the Scroll Key Once and you will see Code Pass, with the UP Button change the value Pass to 1.
- Now press the Scroll Key Once and you will see GOTO OPER.
- With the Up or Down Buttons change the value OPER to CONF.
- Now press the Scroll Key once and you will see Code 0, with the UP Button change the value 0 to 2.
- Now press the Page Button and the display will change to INST CONF.
- Now press the Scroll button repeatedly until the display reads ACT REV
- Now press the Up Button to change the displayed value from REV to DIR
- Now press the Page Button repeatedly until the display reads Exit NO.
- Press the Up Button to change the value NO to YES.
At this time the controller will reboot.
You have successfully changed the Control Action from Reverse Acting Control (Typical Heating Application) to Direct Acting Control (Typical Refrigeration Cooling Application).
