Table Of Contents - Danfoss AKC 25H1 Description

Contents
Validity
2
Introduction ............................................................................................................................... 3
Operation .................................................................................................................................. 4
System information ................................................................................................................. 4
Language .................................................................................................................................. 4
Capacity regulation of compressor ........................................................................................ 5
Regulation ...................................................................................................................... 5
External displacement of reference ............................................................................... 5
Neutral zone and regulating band ................................................................................. 6
Compressor definition .................................................................................................... 6
Time delays for cut ins and cut outs ............................................................................... 6
Sequence for cut in and cut out of capacity ................................................................... 7
Signal from the compressor's safety controls ................................................................ 7
Hourmeter ...................................................................................................................... 8
Temperature sensor ....................................................................................................... 8
Forced control of compressor capacity .......................................................................... 8
Capacity regulation of condenser .......................................................................................... 9
Regulation ...................................................................................................................... 9
Neutral zone and regulating band ................................................................................. 9
Condenser definition ...................................................................................................... 9
Signal from the condenser's safety controls ................................................................ 10
Hourmeter .................................................................................................................... 10
Forced control of condenser capacity .......................................................................... 10
Overriding ............................................................................................................................... 11
Monitoring ............................................................................................................... 12
Monitoring of maximum discharge gas temperature ........................................ 12
Monitoring of maximum discharge pressure .................................................... 12
Monitoring of minimum suction pressure ......................................................... 13
Monitoring of suction gas superheat ................................................................ 13
Monitoring of the different parts of the compressor's safety circuit .................. 14
Monitoring of other automatic controls ............................................................ 14
Supply voltage ........................................................................................................................ 15
Function switch ...................................................................................................................... 15
Clock function ........................................................................................................................ 15
Refrigerant .............................................................................................................................. 16
Service .................................................................................................................................... 17
System measurements/data ................................................................................................ 18
Alarms and messages .......................................................................................................... 19
Access codes ........................................................................................................................ 23
Supporting text ....................................................................................................................... 23
Installation considerations ................................................................................................... 23
List of literature ...................................................................................................................... 24
This function description was revised in September 1999 and applies to AKC 25H1 with code
numbers 084B2017 and 084B2018.
Function description RC.1J.Z4.02 © Danfoss 09/1999 AKC 25H1