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