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SiUS331708EA
Protection Control
Functions and Control
52
4. Protection Control
4.1
High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due to an abnormal
increase in high pressure and to protect compressors against transient increases in high pressure.
Cooling operation
Pc > 3.53 MPa (512 psi)
After 10 sec.
Pc > 3.47 MPa (503 psi)
Pc < 3.38 MPa (490 psi)
Pc > 3.78 MPa (548 psi)
Pc > 3.63 MPa (526 psi)
Current step maintained
After 1 minute
After 10 sec.
High pressure not limited
High pressure limited
Pc: High pressure sensor detection value
Compressor upper limit
frequency: 1-step down from
current compressor frequency
When occurring 3 times within 30 minutes,
high pressure switch is activated without
high pressure standby, thus outputting the
error code
E3
.
Compressor upper limit frequency: Maximum
High pressure
standby
Compressor upper limit
frequency: 1-step up from
current compressor frequency
Lower limit
frequency
Содержание RXSQ24TAVJU
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