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Control Specification
2.3
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
Correction value (a) = correction value by operation frequency (b)
Correction value by operation frequency (b)
Correction value by outdoor temperature (c)
58
118 – correction value (a)
108 – correction value (a)
103 – correction value (a)
97 – correction value (a)
85 – correction value (a)
Discharge pipe
temperature (˚C)
+ correction value by outdoor temperature (c)
Operation frequency
50 rps
35 rps
Outdoor temperature
– 10˚C
Zone
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.
Stop zone
Dropping zone
Keep zone
Correction value (b) = 0 deg
Correction value (b) = 8 deg
Correction value (b) = 12 deg
Correction value (c) = 0 deg
Correction value (c) = 7 deg
Control
SiBE04-624_B
Up zone
Reset zone
(R18149)
45 rps
30 rps
(R13908)
– 9˚C
(R13909)
Function and Control
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