Operation - Danfoss AK-PC 420 User Manual

Operation

Data communication
If the controller is extended with data communication, the opera-
tion can be performed from a system unit. The parameter names
for the functions can be viewed in the right-hand column on
pages 8–12.
The importance of the alarms that are sent can be defined with
the setting: 1 (High), 2 (Medium), 3 (Low) or 0 (No alarm).
Operation via external display
The values will be shown with three digits, and with a setting you
can determine whether the pressures are to be shown in °C or in
°F (bar/psig).
There are two options for the display.
EKA 164
EKA 163
The buttons on the display
When you want to change a setting, the upper and the lower
buttons 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 button. When you have changed
the value, save the new value by once more pushing the middle
button.
AK-PC 420 Manual RS8EL402 © Danfoss 03-2010
EKA 164
To operate the controller and view the regulation temperature.
If the lowermost key is pressed, the temperature from one of the
other sensors will be shown briefly in the display.
Regulation Normal display
Regulation sensor
1 and 2 S7
3 and 4 Pc
5 and 6 S8
EKA 163
If the alternative temperature is to be shown constantly, a display
without operating keys can be connected.
Or short:
1. Push the upper button (long push) until a parameter is shown
2. Push one of the buttons and find the parameter you want to
change
3. Push the middle button until the setting value is shown
4. Push one of the buttons and select the new value
5. Push the middle button again to conclude the setting
( A brief pushing will show the active alarm codes. See page 15.)
Alternative view
(lowermost key)
Pc
S7
S7
13