D145H4502 Ed. 01
15
WITH FREQUENCY CONVERTER
Operation is the same as in the previous point, but modulating the power of the fans with the converter while it
remains in the neutral zone using a PID control.
Near the upper limit, the fans operate at their maximum capacity, and if said limit is exceeded, the capacity is kept at
its maximum until returning to the neutral zone.
Near the lower limit, the fans operate at their minimum capacity, and if said limit is exceeded, they stop until retur-
ning to the neutral zone, upon which they activate again at their minimum capacity.
Floating condensation
The controller modulates the evaporation Set Point taking into account the ambient temperature (requiring connec-
ting probe 3) and the power of the compressors.
This type of control improves the COP (the relationship between cooling power and consumed electrical energy) and
hence increases the energy performance of the installation.
This mode is only valid if the fans of the condenser are controlled, with or without a frequency converter.
SP+E06
SP-E06
SP
100 %
100 %
0 %
OFF
(R1 OFF)
Upper limit
Time
Pres / Temp (probe 2)
Converter status
Lower limit
NEUTRAL
ZONE
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