ECKELMANN UA 400 - Master;Slave Mode for the Synchronisation of the Zones of a Single Controller

Firmware V3.15
21.04.2021
44/401
5.5.6.1 Master/slave mode for the synchronisation of the zones of a single controller
Operation
Master configuration:Theinternaldefrosttimermustbeactiveforthecasecontroller(menu3-2,
parameterAbtauuhr = 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:Synchroniseddefrostterminationfor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 then immediately switched to cooling. On the other hand,
if an operating mode is required where both zones should simultaneously switch to cooling after the defrost, the
coding switch 4 on the DIP switch S3 must also be set to ON for the master/slave function.
In this case, the cooling operation does not restart until both zones have finished defrosting. The relay for the
defrost heater continues to be switched individually for each zone according to the temperature of the defrost
termination sensor.
Thespecialfeaturesandlimitationsforthemasterthenapply,seechapterBesonderheiten und
Einschränkungen .
Further details of special features and limitations are provided inchapterBesonderheiten und
Einschränkungen.
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