Danfoss AK-CC55 Multi Coil Case Controllers
Danfoss AK-CC55 Multi Coil Case controllers
Copyright, Limitation of Liability and Revision Rights
This publication contains information proprietary to Danfoss. By accepting and using this interface description the user agrees that the information contained herein will be used solely for operating equipment from Danfoss or equipment from other vendors provided that such equipment is intended for communication with Danfoss AK-CC55 Multi Coil Controllers over the RS 485 Modbus serial communication link.
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Danfoss does not guarantee that a software program produced according to the guidelines provided in this manual will function properly in every physical, hardware or software environment.
Although Danfoss has tested and reviewed the documentation within this interface description, Danfoss makes no warranty or representation, either express or implied, with respect to this documentation, including its quality, performance, or fitness for a particular purpose.
In no event shall Danfoss be liable for direct, indirect, special, incidental, or consequential damages arising out of the use, or the inability to use information contained in this interface description, even if advised of the possibility of such damages.
In particular, Danfoss is not responsible for any costs including but not limited to those incurred as a result of lost profits or revenue, loss or damage of equipment, loss of computer programs, loss of data, the costs to substitute these, or any claims by third parties.
Danfoss reserves the right to revise this publication at any time and to make changes in its contents without prior notice or any obligation to notify previous users of such revisions or changes.
Modbus Communication
Danfoss AK-CC55 controllers are using Modbus RTU.
Communication speed is default “auto detection” Default communication settings are “8 bit, Even parity, 1 stop bit”.
Network address can be set via AK-UI55 setting display and Network address as well as Network communication settings can be changed via the AK-UI55 Bluetooth display and the AK-CC55 Connect service app. For further information see AK-CC55 Documentation.
Danfoss AK-CC55 controllers are Modbus compliant and MODBUS Application Protocol Specification can be found via http://modbus.org/specs.php
AK-CC55 Documentation:
AK-CC55 User Guides and Installation Guides can be found via www.danfoss.com:
https://www.danfoss.com/en/products/electronic-controls/dcs/evaporator-and-room-control/#taboverview
Parameter list for Multi Coil (084B4084)
| Parameter | PNU | Value | Min. | Max. | Type | RW | Scale | A |
| Readouts | ||||||||
| — Sum alarm | 2541 | 0 | 0 | 1 | Boolean | R | 1 | |
| u00 Ctrl. State | 2007 | 0 | 0 | 48 | Integer | R | 1 | |
| U74 Ctrl. State B | 2734 | 0 | 0 | 48 | Integer | R | 1 | X |
| U83 Ctrl. State C | 2743 | 0 | 0 | 48 | Integer | R | 1 | X |
| u17 Ther. air | 2532 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| U77 Ther. air B | 2737 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U86 Ther. air C | 2746 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| u26 Evap Temp Te | 2544 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| u20 S2 temp | 2537 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| U79 S2 temp. B | 2739 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U88 S2 temp. C | 2748 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| u16 S4 air temp. | 2531 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| U76 S4 temp B | 2736 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U85 S4 temp C | 2745 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| u09 S5 temp | 1011 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| u75 S5 temp. B | 2595 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U72 Food temp | 2702 | 0 | -200 | 2000 | Float | R | 0.1 | X |
| u23 EEV OD % | 2528 | 0 | 0 | 100 | Float | R | 0.1 | X |
| U82 EEV OD % B | 2742 | 0 | 0 | 100 | Float | R | 0.1 | X |
| U91 EEV OD % C | 2751 | 0 | 0 | 100 | Float | R | 0.1 | |
| U73 Def. Stop Temp | 2703 | 0 | -2000 | 2000 | Integer | R | 1 | X |
| U93 Def. Stop Tem B | 2763 | 0 | -2000 | 2000 | Integer | R | 1 | X |
| U94 Def. Stop Tem C | 2764 | 0 | -2000 | 2000 | Integer | R | 1 | X |
| u57 Alarm air | 2578 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| u86 Ther. band | 2607 | 1 | 1 | 2 | Integer | R | 0.1 | |
| U34 Alarm air B | 2671 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U92 Alarm air C | 2762 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| u13 Night cond | 2533 | 0 | 0 | 1 | Boolean | R | 1 | |
| u90 Cutin temp. | 2612 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| u91 Cutout temp. | 2513 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| u21 Superheat | 2536 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| u22 Superheat Ref | 2535 | 0 | -2000 | 2000 | Float | R | 0.1 | |
| U80 Superheat B | 2740 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U81 SH Ref B | 2741 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U89 Superheat C | 2749 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| U90 SH Ref C | 2750 | 0 | -2000 | 2000 | Float | R | 0.1 | X |
| Settings | ||||||||
| r12 Main switch | 117 | 0 | -1 | 1 | Integer | RW | 1 | |
| r00 Cutout | 100 | 20 | -500 | 500 | Float | RW | 0.1 | |
| r01 Differential | 101 | 20 | 1 | 200 | Float | RW | 0.1 | |
| — Def. Start | 1013 | 0 | 0 | 1 | Boolean | RW | 1 | |
| d02 Def . Stop temp | 1001 | 60 | 0 | 500 | Float | RW | 0.1 | |
| A03 Alarm delay | 10002 | 30 | 0 | 240 | Integer | RW | 1 | |
| A13 High Lim Air | 10019 | 80 | -500 | 500 | Float | RW | 0.1 | |
| A14 Low Lim Air | 10020 | -300 | -500 | 500 | Float | RW | 0.1 | |
| r21 Cutout 2 | 131 | 2.0 | -60.0 | 50.0 | Float | RW | 1 | |
| r93 Diff Th2 | 210 | 2.0 | 0.1 | 20.0 | Float | RW | 1 | |
| d02 Def. Stop Temp | 1001 | 6.0 | 0.0 | 50.0 | Float | RW | 1 | |
| d04 Max Def. time | 1003 | 45 | d24 | 360 | Integer | RW | 0 | |
| d28 DefStopTemp2 | 1046 | 6.0 | 0.0 | 50.0 | Float | RW | 1 | |
| d29 MaxDefTime2 | 1047 | 45 | d24 | 360 | Integer | RW | 0 | |
| Alarms | ||||||||
| — Contr. error | 20000 | 0 | 0 | 1 | Boolean | R | 1 | |
| — RTC error | 20001 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Pe error | 20002 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S2 error | 20003 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S4 error | 20004 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S5 error | 20005 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S5 error B | 20006 | 0 | 0 | 1 | Boolean | R | 1 | |
| — RH input err | 20007 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S4 error B | 20008 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S4 error C | 20009 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S2 error B | 200010 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S2 error C | 200011 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Hight. alarm | 200012 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Low t. alarm | 200013 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Door alarm | 200014 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max Hold Time | 200015 | 0 | 0 | 1 | Boolean | R | 1 | |
| — No Rfg. sel. | 200016 | 0 | 0 | 1 | Boolean | R | 1 | |
| — DI1 alarm | 200017 | 0 | 0 | 1 | Boolean | R | 1 | |
| — DI2 alarm | 200018 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Standby mode | 200019 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Case clean | 200020 | 0 | 0 | 1 | Boolean | R | 1 | |
| — High Temp. B | 200021 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Low Temp. B | 200022 | 0 | 0 | 1 | Boolean | R | 1 | |
| — CO2 Alarm | 200023 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Refg. Leak | 200024 | 0 | 0 | 1 | Boolean | R | 1 | |
| — High Humidity | 200025 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Low Humidity | 200026 | 0 | 0 | 1 | Boolean | R | 1 | |
| — High Temp. C | 200027 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Low Temp. C | 200028 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max Def. Time | 200029 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max Def Time B | 200030 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max Def Time C | 200031 | 0 | 0 | 1 | Boolean | R | 1 | |
Note: Parameters marked with “X” in the “A” (App mode column) is not present in all App modes (for further info see AK-CC55 User Guide).
Customer Support
Danfoss A/S
Climate Solutions danfoss.com +45 7488 2222
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©Danfoss | Climate Solutions | 2022.02
Documents / Resources
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Danfoss AK-CC55 Multi Coil Case Controllers [pdf] User Guide AK-CC55, AK-CC55 Multi Coil Case Controllers, Multi Coil Case Controllers, Coil Case Controllers, Case Controllers, Controllers |
