Figure 25: Standard display case, upright or normal, with
one evaporator
Figure 26: Cold room conguration with door, light and
heat control function
Hint: On cold rooms the S4 sensor can be placed
at the air inlet of the evaporator.
Applications
The chapter outlines application examples:
• 1-3: Control of one, two and three evaporators
• 4: Control of high temperature cold rooms with two evaporators
• 5: Control of low temperature cold rooms with two evaporators
An application setting will congure inputs and outputs so that the controller’s operation interface is reecting the
selected application.
AK-CC55 connections and application options
Upper and lower connection labels are laid out as shown in gure:
Figure 27: Electrical connections AK-CC55 Multi Coil
Danfoss
84B3255
115 – 230 V AC
AKV DO3 DO7DO5 DO6
DI3
115 – 230 V AC
1 2 3 7 8 9 10 11 12 13 14 23 2421 22 30 3115 16 17 18 19 20
L N
40
5V
s
AI1
AI2 AI5 AI6
(1)
AI3 AI4 DI1/
AI7
(1)
DI2 AO1
PWM
41 42 43 44 45 46 47 48 49 50 51 52 53 54 60 61 70 71 83 84
B
-
A
+
MODBUS
85
DO2 DO4
Max. 0.5 A - No overload protection!
AK-CC55 Multi Coil is optimised for control of one to three expansion valve + dierent combinations of light, rail
heat and alarm relays. It has 7 Digital Outputs (DO), known as DO1 – DO7, one Analogue Output (AO), known as
AO1, 6 Analogue Inputs (AI), known as AI1 – AI6, an input that can be used as either DI1 (Digital Input) or AI7 (Sensor
Input), and 2 Digital Inputs, known as DI2 - DI3.
Table 7: The controller covers the following ve applications:
Control of one, two and three evaporators.
Control of high temperature cold rooms with two evaporators.
Control of low temperature cold rooms with two evaporators.
AK-CC55 Multi Coil
© Danfoss | Climate Solutions | 2022.08 BC365022028193en-000201 | 22
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