Operation - Danfoss Optyma iCO2 User Manual

User Guide | Optyma™ iCO2

2.7 Operation

Display
The values will be shown with three digits.
When you want to change a setting, the upper and the lower button will give you a higher or lower value depending on the button you are pushing. But before you
change the value, you must have access to the menu. You obtain this by pushing the upper button for a couple of seconds - you will then enter the column with
parameter codes. Find the parameter code you want to change and push the middle buttons until value for the parameter is shown. When you have changed the
value, save the new value by once more pushing the middle button. (If not operated for 10 seconds, the display will change back to showing the suction pressure
in temperature).
Examples:
Set menu
1. Push the upper button until parameter code r01 is shown
2. Push the upper or the lower button and find that parameter you want to change
3. Push the middle button until the parameter value is shown
4. Push the upper or the lower button and select the new value
5. Push the middle button again to freeze the value.
See alarm code
A short press of the upper button
If there are several alarm codes they are found in a rolling stack.
Push the uppermost or lowermost button to scan the rolling stack.
Set point
1. Push upper button until display shows parameter menu code r01
2. Select and change par. r28 to 1, which defines the MMILDS UI as the reference set device
3. Select and change par. r01 to the required lower pressure setpoint target in bar(g)
4. Select and change par. r02 to the required upper pressure setpoint target in bar(g)
Remark: The arithmetic middle of r01 and r02 is the target suction pressure.
Get a good start
With the following procedure you can start regulation as soon as possible.
1. Connect the modbus communication to CDU.
2. Connect the modbus communication to evaporator controllers.
3. Configure the address in each evaporator controller.
4. Perform a network scan in the module controller (n01).
5. Verify that all evap. controllers have been found (Io01-Io08).
6. Open parameter r12 and start the regulation.
7. For connection to a Danfoss System Manager
- Connect the modbus communication
- Set the address with parameter o03
- Perform a scan in the System Manager.
20 | BC408445719305en-000101
Active alarm (red triangle)
Scan for Evap. controller is in progress (yellow clock)
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