ECKELMANN Case Controller UA 4 E Series - Master-Slave Mode for the Synchronisation of the Zones of a Single Contr

Firmware V3.13
21.04.2021
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5.8.5.1 Master-slave mode for the synchronisation of the zones of a single contr.
Function description
Master configuration:Withthecasecontrollertheinternaldefrosttimermustbeactive(menu3-2,parameter
Defrost Timer = INT). This case controller is then designated as the master.
On reaching the defrost end temperature for the respective zone the defrost relay is switched off. Cooling is
onlyresumedonceallthecontrolzoneshavecompletedthedefrostorthesafedefrosttimehaselapsed.
Example: Synchronized defrost termination on one controller with two temperature zones.
In standard operation with two temperature zones, the defrost in each zone is terminated dependent on the
defrostterminationsensoroftherespectivezoneandimmediatelyswitchedtocooling.Ifincontrast,an
operatingmodeisrequiredwherebothzonessimultaneouslyswitchtocoolingfollowingthedefrost,thenthe
master/slavefunctiononDIPswitch3ofcodingswitch4alsoneedstobesettoON.
Cooling will then not be resumed until defrosting is terminated in both zones. The defrost heater relay is still
operatedseparatelyforeachzoneaccordingtotemperatureonthedefrostterminationsensor.
Thespecialfeaturesandrestrictionsforthemasternowapply,seechapterMaster-slave mode for the
synchronisation of the zones of a single contr.
FurtherdetailsofspecialfeaturesandrestrictionsareprovidedinchapterMaster-slave mode for the
synchronisation of the zones of a single contr..
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