Danfoss AK-CC55 User Manual page 54

User Guide | Controller for appliance control, AK-CC55
Digital input signal - DI1
The controller has a digital input 1 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 and light switched on. When the time
setting in "A04" is passed, an alarm will be given and refrigeration will be resumed
(o89).
3) Door alarm. When the input is open, it signals that the door is open. When the time
setting in "A04" is passed, there will be an alarm.
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.
5) Main switch. Regulation is carried out when the input is short-circuited, and
regulation is stopped when the input is put in pos. OFF.
6) Night operation. When the input is short-circuited, there will be regulation for
night operation.
7) Thermostat band changeover. Switch to thermostat 2 (r21) when the input is short-
circuited.
8) Separate alarm function. Alarm will be given when the input is short-circuited.
9) Separate alarm function. Alarm will be given when the input is opened. (For 8 and
9 the time delay is set in A27)
10) Appliance cleaning. The function is started with a pulse signal.
See also description on page 40.
11) Forced refrigeration at hot gas defrost when the input is short-circuited.
12) Night blinds. When the input is short-circuited, the night blinds open.
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 closed.
16) The light turns on when the input is closed (o38 must be set to "5")
20) Refrigerant leak alarm
21) Allow liquid flow in the evaporator when the input is short-circuited
If the controller is built into a network with data communication, it must have an
address, and the master gateway of the data communication must then know this
address.
The address is set between 0 and 240, depending on the system unit and the selected
data communication. If the system unit is gateway type AKA 245, the version must be
6.20 or higher.
o04 is only used when the data communication is Lon 485.
The address is sent to the gateway when the menu is set in pos. ON
IMPORTANT: Before you set o04, you MUST set o61. Otherwise you will be
transmitting incorrect data.
Access code 3 (Access to all settings)
If the settings in the controller are to be protected with an access code, you can set a
numerical value between 1 and 999.
If no restrictions are desired, the setting must be 0.
Sensor type for S3, S4, S5
Normally a Pt 1000 AKS11 sensor with great signal accuracy is used. But you can also
use a PTC 1000 EKS111 sensor, Ntc5K EKS211 sensor or Ntc 10K EKS221 sensor with
another signal accuracy.
All the mounted sensors S3-S5 must be of the same type.
Max. standby time after coordinated defrost
When a controller has completed a defrost it will wait for a signal which tells that the
refrigeration may be resumed. If this signal fails to appear for one reason or another,
the controller will itself start the refrigeration when this standby time has elapsed.
Select signal for the display S4% (Only Compact and Single Coil)
Here you define the signal to be shown by the display.
S3, S4, or a combination of the two.
With setting 0% only S3 is used. With 100% only S4.
Pe. working range for pressure transmitter - min. value
Pe. working range for pressure transmitter - max. value
54 | BC308437742037en-000101
o02 DI 1 Config.
The definition happens with the
number value shown to the left.
(0 = off )
DI state
(Measurement)
Here the current status of the DI input
is shown. ON or OFF.
o03
o04
o05 Acc. code 3
o06 SensorConfig
Pt = 0
PTC = 1
Ntc 5K = 2
Ntc 10K = 3
o16 Max HoldTime
o17 Disp. S4%
o20 MinTransPres
o21 MaxTransPres
© Danfoss | DCS (vt) | 2019.09