Page 9 Revision I FROM 2012-09-20
This is especially important for the “positive temperature” appliances that must always operate at
temperatures above 0°C.
As a manufacturer of a cooling appliance, in this case a cooling counter (positive temperatures), we
require that the device enables operation only within the range of temperatures that do not exceed the
below specified values: Switching off at min. 2°C. Switching on at max. 10°C
Symmetrical hysteresis for even values of ‘d3’
Symmetrical hysteresis for odd values of ‘d3’
Example 1.
Assume the hysteresis ‘d3’ is set to e.g. 2°C.
For the above hysteresis setting you should also
set the parameters: ‘d0’ to 3°C and ‘d1’ to 9°C
Example 3.
Assume the hysteresis ‘d3’ is set to e.g. 3°C.
For the above hysteresis setting you should also set
the parameters: ‘d0’ to 3°C and ‘d1’ to 8°C
Example 2.
Assume the hysteresis ‘d3’ is set to e.g. 4°C.
For the above hysteresis setting you should also
set the parameters: ‘d0’ to 4°C and ‘d1’ to 8°C
Example 4.
Assume the hysteresis ‘d3’ is set to e.g. 5°C.
For the above hysteresis setting you should also set
the parameters: ‘d0’ to 4°C and ‘d1’ to 7°C
VII. ON/OFF DIAGRAMS FOR INDIVIDUAL ASSEMBLIES OF THE
APPLIANCE
For individual assemblies the thick line means On and the dashed line means Off.
The field “Standstill” means off, while the “Operation” field means activation of the compressor due to
exceeded programmed temperature, of course including the hysteresis programmed in parameter ‘d3’.
INCORRECT PARAMETER SETTING CAUSES ERRONEOUS OPERATION OF THE
APPLIANCE !!!
1. fan operating together with the compressor r1’=01
t=c3
KOMPRESOR
WENTYLATOR
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2. fan operating continuously ‘r1’=02,
Temperature set
by the user
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