Control Specification SiBE121123_A
95 Function and Control
4.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not used when defrosting.)
4.4 Discharge Pipe Temperature Control
Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to
keep this temperature from rising further.
Detail
40 class 50 class
A (Hz)
62 55
B (Hz)
72 70
C (Hz)
90 85
D (seconds)
140 150
E (seconds)
180 180
F (seconds)
300 300
(sec.)
Time
(R13528)
(Hz)
Frequency
B
A
C
DEF
40 class 50 class
A(°C)
110 110
B(°C)
103 103
C(°C)
102 102
D(°C)
101 100
E(°C)
97 95
Zone Control
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Reset zone The upper limit of frequency is canceled.
Reset zone
Stop zone
Dropping
zone
Keep
zone
(R14266)
A
C
D
E
B
Discharge pipe
temperature