Danfoss AK-CC55 Water Loop Owner’s
Danfoss AK-CC55 Water Loop 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 Water Loop Controllers over the RS 485 Modbus serial communication link.
- This publication is protected under the Copyright laws of Denmark and most other countries.
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 below link 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/#tab-overview
Parameter list for Compact (084B4058)
| Parameter | PNU | Value | Min. | Max. | Type | RW | Scale | A |
| Readouts | ||||||||
| — Sum alarm | 2541 | 0 | 0 | 1 | Integer | R | 0 | |
| u00 Ctrl. state | 2007 | 0 | 0 | 50 | Integer | R | 0 | |
| u17 Ther. air | 2532 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u12 S3 air temp. | 2530 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u16 S4 air temp. | 2531 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u09 S5 temp. | 1011 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u93 S8 temp | 2616 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u98 S7 temp | 2621 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| U72 Food temp. | 2702 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| U73 Def.StopTemp | 2703 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u57 Alarm air | 2578 | 0.0 | -200.0 | 200.0 | Float | R | 1 | |
| u86 Ther. band | 2607 | 1 | 1 | 2 | Integer | R | 0 | |
| u13 Night Cond. | 2533 | 0 | 0 | 1 | Integer | R | 0 | |
| u90 Cutin temp. | 2612 | 4.0 | -200.0 | 200.0 | Float | R | 1 | |
| u91 Cutout temp. | 2613 | 2.0 | -200.0 | 200.0 | Float | R | 1 | |
| u52 Comp. Cap. | 2685 | 0 | 0 | 100 | Integer | R | 0 | A |
| U28 Pump speed | 2665 | 0 | 0 | 100 | Integer | R | 0 | A |
| Settings | ||||||||
| r12 Main switch | 117 | 0 | -1 | 1 | Integer | RW | 0 | |
| r00 Cutout | 100 | 2.0 | r03 | r02 | Float | RW | 1 | |
| r01 Differential | 101 | 2.0 | 0.1 | 20.0 | Float | RW | 1 | |
| — Def. Start | 1013 | 0 | 0 | 1 | Integer | RW | 0 | |
| d02 Def.StopTemp | 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 | |
| A03 Alarm delay | 10002 | 30 | 0 | 240 | Integer | RW | 0 | |
| A13 HighLim Air | 10019 | 8.0 | -60.0 | 50.0 | Float | RW | 1 | |
| A14 LowLim Air | 10020 | -30.0 | -60.0 | 50.0 | Float | RW | 1 | |
| Parameter | PNU | Value | Min. | Max. | Type | RW | Scale | A |
| Alarms | ||||||||
| — Contr. error | 20000 | 0 | 0 | 1 | Boolean | R | 1 | |
| — RTC error | 20001 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S3 error | 20002 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S4 error | 20003 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S5 error | 20004 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S7 error | 20005 | 0 | 0 | 1 | Boolean | R | 1 | |
| — S8 error | 20006 | 0 | 0 | 1 | Boolean | R | 1 | |
| — High t.alarm | 20007 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Low t. alarm | 20008 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Door alarm | 20009 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max HoldTime | 20010 | 0 | 0 | 1 | Boolean | R | 1 | |
| — DI1 alarm | 20011 | 0 | 0 | 1 | Boolean | R | 1 | |
| — DI2 alarm | 20012 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Comp. fault | 20013 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Standby mode | 20014 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Case clean | 20015 | 0 | 0 | 1 | Boolean | R | 1 | |
| — SpeedDriveAl | 20016 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Refg.Leak | 20017 | 0 | 0 | 1 | Boolean | R | 1 | |
| — MaxBrineTemp | 20018 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Wrong IO cfg | 20019 | 0 | 0 | 1 | Boolean | R | 1 | |
| — Max Def.Time | 20020 | 0 | 0 | 1 | Boolean | R | 1 | |
Modbus Specifications and Implementation Guides
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