Daewoo FRS-U20DD Series, Руководство по обслуживанию

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8-8-2. Inverter Control Mode
1) Frequency Mode
Controls the compressor speed through a frequency signal sent to the Inverter.
The frequency signal is a digital square wave, with 0 to +5V voltage amplitude and defined range as described ahead.
The duty cycle must be from 30% to 70%.
< Frequency signal >
2) Compressor speed
Compressor speed will follow the frequency signal, according to the relation described bellow.
< Relation between Inverter frequency and compressor rotation >
1,600 50.1 to 53.3
30 x Hz 53.4 to 150
hysteresis 105 to 111
hysteresis 130 to 132
hysteresis 136.6 to 138.6
4,500 > 150
0 0 to 50
Comp Speed
(rpm)
Input Signal
(Hz)
3) In this refrigerator, input frequency signals are used as below.
Other conditions Ambient Temperature
Initial Power connected
Weak-Cool
Super FRZ
Super REF
Normal condition
-
122 Hz
85 Hz
122 Hz
Input
Frequency
3660 rpm
2550 rpm
below 35
℃
3660 rpm over 35
℃
Comp Speed
Condition