Danfoss AK-CC55 User Manual page 56

User Guide | Controller for appliance control, AK-CC55
Appliance cleaning
The status of the function can be followed here or the function can be started
manually.
0 = Normal operation (no cleaning)
1 = Cleaning with fans operating. All other outputs are Off.
2 = Cleaning with stopped fans. All outputs are Off.
If the function is controlled by a signal at the DI1, DI2 or DI3 input, the relevant status
can be seen here in the menu.
Selection of application
The controller can be defined in various ways. Here you set which of the applications
is required. On page 6-14 you can see a survey of applications.
This menu can only be set when regulation is stopped, i.e. "r12" is set to 0.
Access code 2 (Access to adjustments)
This code provides access to adjustment of most values but not configuration set-
tings.
If access is required to make adjustments, choose a numerical value between 1 and
999. If not, you can cancel the function with setting 0. If the function is used, access
code 1 (o05) must also be used.
Save as factory setting
With this setting you save the controller's actual settings as a new basic setting (the
earlier factory settings are overwritten).
Digital input signal - DI3 (high voltage input)
The controller has a digital input 3 which can be used for one of the following
functions:
Off: The input is not used.
1) Status display of 230 V signal
2) Door function. When the input is 0 V it signals that the door is open. The
refrigeration and the fans are stopped. When the time setting in "A04" is passed, an
alarm will be given and refrigeration resumed. (o89).
3) Door alarm. When the input is 0V it signals that the door is open. When the time
setting in "A04" is passed, an alarm will be given.
4) Defrost. The function is started with a pulse signal (pulse on 230 V).
5) Main switch. Regulation is carried out when the input is 230 V and regulation is
stopped when the input is 0 V.
6) Night operation. When the input is 230 V, there will be regulation for night
operation.
7) Thermostat band changeover. Switch to thermostat 2 (r21) when the input is 230 V.
8) Not used.
9) Not used.
10) Appliance cleaning. The function is started with a pulse signal (pulse on 230 V).
See also description on page 40.
11) Forced refrigeration at hot gas defrost when the input is 230 V.
12) Night blinds. When the input is 230 V the night blinds will be activated.
13) Not used.
14) The cooling is stopped with the function "Forced closing" when the input is open
15) Case shutdown when the input is 230 V.
16) The light turns on when the input is 230 V (o38 must be set to "5")
20) Refrigerant leak alarm
21) Allow liquid flow in the evaporator when the input is 230 V.
Rail heat control
The rail heat can be controlled in several ways:
0: The function is not used.
1: Pulse control is used with a timer function following the day/night operation (o41
and o42).
2: Pulse control is used with a dew point function. This function requires that a signal
is received about the dew point value. The value is measured by a system manager
and sent to the controller via the data communication.
Dew point value where the rail heat is minimum
This function is discussed earlier in the manual.
Dew point value where the rail heat is maximum
This function is discussed earlier in the manual.
Lowest permitted rail heat effect
This function is setting the minimum power to the rail heat independent of dew
point.
Start of refrigeration when door is open
If the door has been left open, refrigeration must be started after a set time. That time
can be set here.
56 | BC308437742037en-000101
o46 Case clean
o61 Appl. Mode
o64 Acc. code 2
o67 -
o84 DI3 config.
o85 Railh. mode
o86 DewP Min. lim
o87 DewP Max. lim
o88 Rail Min. ON%
o89 DoorInjStart
© Danfoss | DCS (vt) | 2019.09