SiBE121021_C Control Specification
Function and Control 117
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 going up further.
Detail
50/52/58 class 68/75/80/90 class
A (Hz) 55 55
B (Hz) 70 65
C (Hz) 85 80
D (seconds) 150 120
E (seconds) 180 200
F (seconds) 300 470
A
DEF
B
C
(R13528)
(Hz)
Frequency
(sec.)
Time
Zone Control
Stop zone When the temperature reaches the stop zone, the compressor stops.
Drooping 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.
68/75/80/90 class
120
111
109
107
107
50/52/58 class
110
103
102
100
95
A (ËšC)
B (ËšC)
C (ËšC)
D (ËšC)
E (ËšC)
Reset zone
Stop zone
Drooping
zone
Keep
zone
(R14266)
A
C
D
E
B
Discharge pipe
temperature