Danfoss Instructions AK-CC 550A Installation Guide

Summary

This comprehensive technical manual is designed for HVAC engineers and service technicians maintaining complex environmental control systems. It provides detailed setup and operation instructions for the AK-CC 550A controller, detailing its role in managing functions like heating, cooling, and adaptive defrost cycles. The guide covers intricate wiring specifications, digital/analog input configuration, fault diagnostics, and advanced integration utilizing MODBUS and RS485 data communication protocols.

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Page 1 Text Content

Instructions AK-CC 550A

Identification Dimensions

Principle

S2: Insulate sensor Fühler isolieren Capteur isolés Isolér føleren Sensores aislados

AKV info !!

230 V a.c. spole 230 V a.c. coil 230 V a.c. Spule 230 V c.a. Bobine 230 V c.a. Bobina 230 V c.a. Bobine

AK-CC 550A Additional information: English Manual Weitere Information: Deutsches Manual Renseignements supplémentarires: Manuel en français Yderligere information: Dansk Manual

RS8FS... www.danfoss.com

Información adicional: Manual español Informazioni aggiuntive! Manuale in italiano Ytterligare information: Svenska Handbok Aanvullende informatie: Dutch Handleiding

RI8NP602 2016-06

Page Summary Contents For Danfoss Instructions AK-CC 550A Installation Guide

Page 1 Instructions AK-CC 550A Identification Dimensions Principle S2: Insulate sensor Fühler isolieren Capteur isolés Isolér føleren Sensores aislados AKV info !! 230 V a.c. spole 230 V a.c. coil 230 V a.c....

Page 2 The controller is provided with signs from the factory indicating application 1. If you employ another use, signs are provided so that you can mount the relevant one. Werkseitig wird der Regler mit Sc...

Page 3 AK-CC 550A Instructions RI8NP602 © Danfoss 2016-06 3

Page 4 Data communication Important All connections to the data communication MODBUS and RS 485 must comply Datenkommunikation with the requirements for data communication cables. See literature: RC8AC. Tran...

Page 5 English Connections Application DO1 DO2 DO3 DO4 DO5 DO6 DI1 DI2 DI3 AI1 AI2 AI3 AI4 AI5 AI6 Overview of outputs and applications. See also electrical diagrams earlier in the instruction suction hotgas...

Page 6 DO1 DO6 Connection of expansion valve type AKV or AKVA. The coil must Light relay be a 230 V a.c. coil. There is connection between terminal 17 and 18 when the light must be on. DO2 Rail heat, Compres...

Page 7 Operation Display Get a good start The values will be shown with three digits, and with a setting you can determine whether the temperature is to be shown in °C or in With the following procedure you ...

Page 8 SW = 1.9x Menu survey Parameter EL-diagram page 2 or 3 Factory Actual Min.-value Max.-value Code setting setting Function Normal operation Temperature (setpoint) - - - -50°C 50°C Thermostat Differenti...

Page 9 Code Min. Max. Fac. Actual SW = 1.2x Continued Pump down delay d16 0 min. 60 min. Drain delay (used at hot gas defrost only) d17 0 min. 60 min. Max. aggregate refrigeration time between two defrosts d...

Page 10 Continued Code Min. Max. Fac. Actual Input signal on DI2. Function: o37 (0=not used. 1=status on DI2. 2=door function with alarm when open. 3=door alarm when open. 4=defrost start (pulse-signal). 5=ex...

Page 11 Continued Code Min. Max. Fac. Actual Service Temperature measured with S5 sensor u09 Status on DI1 input. on/1=closed u10 Actual defrost time (minutes) u11 Temperature measured with S3 sensor u12 Stat...

Page 12 Fault message Operating status (Measurement) In an error situation the LED’s on the front will flash and the alarm relay will be The controller goes through some regulating situa- Ctrl. state: activat...

Manual Details

Brand	Danfoss
Pages	12
File Size	2.24 MB
Published	June 05, 2026

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Frequently Asked Questions

Can I use the controller for an application other than Application 1?

Yes, if you use a different function, provided signs are included to help mount the correct label.

How must data communication connections be wired?

All connections to MODBUS and RS 485 must comply with the requirements set for data communication cables (see literature: RC8AC).

What is required before connecting a LON RS485 system via terminals 30, 31, and 32?

The gateway must be version 6.20 or higher if connecting using the AKA 245 for LON RS485.

Are all terminal types compatible with data communication sensors?

No; Pt 1000 ohm sensors and PTC 1000 ohm sensors require display type EKA 163A or 164A, but they cannot be used if the other sensor uses this same display type.