5
EMS controllers functionality
EMS controllers have the capability to manage the following:
l
Temperature: EMS controllers measure the air temperature of the refrigeration compartment to control the
temperature of the products. EMS controllers ensure that products are at the optimal serving temperature.
l
Condenser: EMS controllers manage the temperature on the condenser to prevent high temperature.
This is optional for EMS controllers, and dependent on controller specification.
l
Compressor: EMS controllers switch the compressor to manage the performance of the compressor.
l
Evaporator fan:EMS controllers switch the evaporator fan to manage the temperature of the refrigeration
compartment.
This is optional for EMS controllers, and dependent on controller specification.
l
Lights: EMS controllers manage the cooler lights for marketing and energy saving purposes.
Note:
l
Dependent on controller and sensor configuration.
5.1
Defrost - Glass Door Cooler (GDC firmware)
Defrost cycles minimizes the risk of the evaporator icing up.
The defrost cycle occurs periodically as defined by the defrost interval (
dE
).
The defrost interval starts when the EMS controller is powered up or at the end of an uninterrupted
pull down.
Some EMS controllers also enable defrost cycles to be started manually.
The defrost cycle ends after the time defined by the defrost duration (
dd
) or on reaching the defrost
termination temperature (
dtd
), as shown:
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27 February 2014
