Digital input signal - D2
The controller has a digital input 2 which can be used for one of the following functions:
Off: The input is not used.
1) Status display of a contact function
2) Door function. When the input is open 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. The refrigeration will be resumed when time in o89 has passed.
3) Door alarm. When the input is open 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. The controller will register when
the DI input is activated. The controller will then start a defrost cycle. If the signal is
to be received by several controllers (coordnated defrost) it is important that ALL
connections are mounted the same way (DI to DI and GND to GND).
5) Main switch. Regulation is carried out when the input is closed, and regulation is
stopped when the input is put in pos. OFF.
6) Night operation. When the input is closed there will be regulation for night operation.
7) Thermostat band changeover. Switch to thermostat 2 (r21) when the input is closed
8) Separate alarm function. Alarm will be given when the input is closed.
9) Separate alarm function. Alarm will be given when the input is opened.
10) Case cleaning. The function is started with a pulse signal.
See also description on page 5.
11) Not used
12) Night blinds. Pulse signal activates the night blinds.
13) The input is used for coordinated defrost in conjunction with other controllers of the
same type
14) Not used
15) Case Shutdown when input is closed.
o37
DI2 config.
Configuration of light function
1) Light is controlled via day/night status
2) Light is controlled via data communication and "Light remote o39"
3) Light is controlled by door contact, defined in either o02 or o37 where the setting is
selected to either 2 or 3. When the door is opened the relay will cut in. When the door is
closed again there will be a time delay of two minutes before the light is switched off.
4) As "2" but if there are any 15-minute network errors, the light will switch on and the
night blind will open.
o38
Light config
Activation of light relay
The light relay can be activated here, but only if defined in o38 with setting 2.
o39
Light remote
Rail heat during day operation
The ON period is set as a percentage of the time
o41
Railh.ON day%
Rail heat during night operation
The ON period is set as a percentage of the time
o42
Railh.ON ngt%
Rail heat cycle
The period of time for the aggregate ON time + OFF time is set in minutes
o43
Railh. cycle
Case 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 or DI2 input, the relevant status can be
seen here in the menu.
o46
Case clean
Selection of application
The controller can be defined in various ways. Here you select which of the 3 application
modes is used:
1: Two compressors – sequential mode
2: One compressor – variable speed controlled
3: Two compressors – cyclic mode
This menu can only be set when regulation is stopped, i.e. “r12” is set to 0.
o61
Appl. Mode
Access code 2 (Access to adjustments)
There is access to adjustments of values, but not to configuration settings. If the settings
in the controller are to be protected with an access code you can set a numerical value
between 0 and 100. If not, you can cancel the function with setting 0. If the function is
used, access code 1 (o05)
must also
be used.
o64
Acc. code 2
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).
o67
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User Guide | Controller for SemiPlugin appliance, AK-CC 460
16 | BC230086440483en-000201
© Danfoss | DCS (vt) | 2019.12