SiMX042215E
Control Specification
Part 4 Functions and Control
39
3.3 Controls at Mode Changing/Start-up
3.3.1 3-Minute Standby
Turning on the compressor is prohibited for 3 minutes after turning off.
3.3.2 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
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.
Details
A
D
E
F
B
C
(R13528)
(Hz)
Frequency
(sec.)
Time
12 class
18 class
24 class
A
(Hz)
44
40
24
B
(Hz)
80
60
52
C
(Hz)
110
79
68
D
(seconds)
120
120
20
E
(seconds)
60
120
100
F
(seconds)
60
180
120
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.
A
(°C)
B
(°C)
C
(°C)
D
(°C)
E
(°C)
12 class
116
110
104
98
88
18 class
116
110
104
101
85
24 class
115
105
100
95
85
(R22432)
Discharge pipe
temperat
u
re
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
E
°C
A
°C
B
°C
C
°C
D
°C
