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Control Specification
SiBE12-816_D
87
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 going up further.
Detail
40 class
50 class
Unit
A
62
55
Hz
B
72
70
C
90
85
D
140
150
seconds
E
180
180
F
300
300
(sec.)
Time
(R13528)
(Hz)
Frequency
B
A
C
D
E
F
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.
50 class
110
103
102
100
95
40 class
110
103
102
101
97
(˚C)
(˚C)
(˚C)
(˚C)
(˚C)
Reset zone
Stop zone
Drooping
zone
(R14062)
Keep
zone
A
B
D
E
C
A
B
D
E
C
Discharge pipe
temperature