Danfoss AK-CC55 Multi Coil User Manual

Thermostat bands
Thermostat bands can be used benecially for appliances where dierent product types are stored, which requires
dierent temperature conditions. It is possible to change between the two dierent thermostat bands via a contact
signal on a digital input. Separate thermostat and alarm limits can be set for each thermostat band.
For the defrost control, separate defrost stop temperature and max. defrost time can be set for each thermostat
band.
Figure 9: Thermostat band function with two dierent band settings
Night setback of thermostat value
In refrigeration appliances there may be big load dierences between the shop’s opening and closing hours,
especially if night lids/blinds are used. The thermostat reference may be raised here without it having any eect on
the product temperature.
Change-over between day and night operation can take place as follows:
• via an external switch connected to a digital input
• via a signal from the data communication system
Figure 10: Thermostat band function with Night setback
Temperature sensor types
The S2 sensors always have to be Pt1000 sensors due to the high measuring accuracy.
For the S4 and S5 sensors, the user can select between the following sensor types:
0=Pt1000 (Danfoss AKS 11)
1=PTC1000 (Danfoss EKS 111)
2=NTC 5k (Danfoss EKS 211)
3=NTC 10k (Danfoss EKS 221)
4 = User-dened
If “User-dened” is selected, three sensor measuring points must be provided and based on these three sensor
points, a sensor characteristic is generated.
A sensor point is dened by setting a temperature value and the corresponding resistance value at this temperature.
The resistance value is set via two values for kohm and ohm respectively. These values can be found in the data
sheet for the sensor.
© Danfoss | Climate Solutions | 2022.08 BC365022028193en-000201 | 11
AK-CC55 Multi Coil

Danfoss AK-CC55 Multi Coil Specifications

General

Brand	Danfoss
Model	AK-CC55 Multi Coil
Category	Controller
Language	English