SiUS091133
Control Specification
Function and Control
46
3.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows. (The
function is not activated when defrosting.)
3.4
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
the discharge pipe temperature from rising further.
Detail
09/12 class
15/18 class
24 class
30/36 class
A (Hz)
48
55
55
46 ~ 55
B (Hz)
64
70
65
65
C (Hz)
88
85
80
80
D (seconds)
240
120
120
120 ~ 500
E (seconds)
360
200
200
100 ~ 200
F (seconds)
180
470
470
470
(sec.)
Time
(R13528)
(Hz)
Frequency
C
B
D
E
F
A
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.
Up zone
The upper limit of frequency increases.
Reset zone
The upper limit of frequency is canceled.
09/12 class
15/18 class
24/30/36 class
A
110°C (230°F)
110°C (230°F)
120°C (248°F)
B
105°C (221°F)
103°C (217.4°F)
111°C (231.8°F)
C
101°C (213.8°F)
101.5°C (214.7°F)
109°C (228.2°F)
D
99°C (210.2°F)
100°C (212°F)
107°C (224.6°F)
E
97°C (206.6°F)
95°C (203°F)
107°C (224.6°F)
(R14711)
Discharge pipe
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
E
A
B
C
D