Advantages; Functions; Table Of Contents; Introduction - Danfoss AK-CC55 User Manual

User Guide | Controller for appliance control, AK-CC55
Contents

Introduction ....................................................................................................... 2

Programme overview ..................................................................................... 4
Applications ....................................................................................................... 6
Operation ..........................................................................................................16
Menu survey — Compact version ............................................................20
Menu survey — Single Coil version .........................................................26
Menu survey — Multi Coil version ...........................................................33
Introduction
Application
Complete refrigeration appliance control with great flexibility to
adapt to refrigeration appliances and cold storage rooms.

Advantages

• Allows the suction pressure to be raised several degrees
• Energy optimization of the whole refrigeration appliance
• Adaptive Minimum Stable Superheat (MSS) control is performed
with lowest possible superheat
• Adaptive Liquid Control (ALC) can be performed with superheat
down to 0 degrees on transcritical CO2 systems with liquid
ejectors
• One controller for several different refrigeration appliances
• Quick set-up with predefined settings
• Easy configuration and service using a mobile app with Bluetooth
Principle
The temperature in the appliance is registered by one or two
temperature sensors which are located in the air flow before the
evaporator (S3) or after the evaporator (S4) respectively. A setting
for thermostat, alarm thermostat and display reading determines
the influence the two sensor values should have for each
individual function.
In addition, product sensor S6, which can be optionally placed in
the appliance, can be used for registration and alarming of the
temperature near the food items.
The temperature of the evaporator is registered with the S5 sensor
which can be used as a defrosting sensor.
In addition to the output to the electronic AKV injection valve, the
controller has relay outputs which are defined by the application
setting.

Functions

• Day/night thermostat with ON/OFF or modulating principle
• Product sensor S6 with separate alarm limits
• Switch between thermostat settings via digital input
• Adaptive control of superheat
• Adaptive defrosting based on diagnostics
• Start of defrost via schedule, digital input or network
• Natural, electric or hot gas defrost
• Stop of defrost on time and/or temperature
• Coordination of defrosting among several controls
• Pulsing or speed control of fans when thermostat is satisfied
• Appliance cleaning function for documentation of HACCP
procedure
2 | BC308437742037en-000101
Functions ...........................................................................................................39
Survey of functions ........................................................................................47
Connections .....................................................................................................65
Data .....................................................................................................................68
Ordering ............................................................................................................69
• Rail heat control via day/night load or dew point
• Humidity control in cold storage rooms
• Door function
• Control of two compressors
• Control of night blinds
• Light control
• Heat thermostat
• High accuracy inputs will guarantee a better measuring accuracy
than stated in the standard EN ISO 23953-2 without subsequent
calibration (Pt 1000 ohm sensor)
• Integrated MODBUS communication with the option of
mounting a LonWorks communication card
© Danfoss | DCS (vt) | 2019.09