Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 727

19.1 GENERAL INFORMATION
19.1.1 Specific features
(1) Fuzzy control
(a) Response speed and stability are enhanced.
¡ The system automatically controls changes of return air temperature, set temperature and room temperature according to
the fuzzy control.
¡ The system response speed, can keep room temperature constant, and can adjust room temperature to set temperature quickly.
Set temp.
Temp.
(Return air thermistor)
FUZZY
Input value
(b) Elimination of temperature irregularity as the time of operation ON/OF control
¡ The system finely controls the compressor to room temperature according to the temperature sensor, air conditions room
temperature consistently and improves cooling or heating feeling in each room(or minimize influence of shutdown in
other room).
(2) Super lynk system
¡ Non polar 2-core signal wires for indoor, outdoor units by means of the automatic polarity selection.
¡ In addition, the max. 48 units can be controlled with a pair of signal wires. The high speed transmission method same as the
computer network system [start up of 48 units can be completed within a few seconds by the determination of operation mode
and the start of operation].
¡ As separate power supplies for the indoor and the outdoor units are employed, a pair of 2 signal wires only are required for the
inter connecting wiring of indoor and outdoor uniits regardless of the number of units so that the installation work can be
simplified, the cost of wiring work can be curtailed and causes of wiring error can be minimized.
(3) Floor layout can be changed by resetting address unit number.
¡ For change of floor layout, the control group can be recombined only by resetting address unit number.
(4) Installation of automatic address setting function
¡ The address setting method are divided into three types according to wiring method: "Automatic Address Setting,""Remote
controller Address Setting" and "Manual Address Setting," In case of the Automatic Address Setting, no address needs be set
as usual.
Temp. difference
operation
Gradient of temp.
30
Heating
27
23
20
25
23
20
FUZZY operation
0 30 60
Time (min)
FDC-HKX
Inverter Hz
E.E.V. pulse
: Fuzzy logic control
: Conventional control
: Set temp.
90 120
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