Si39-502A
Protection Control
Function
71
4.3
Discharge Pipe Protection Control
This discharge pipe protection control is used to protect the compressor internal temperature
against a malfunction or transient increase of discharge pipe temperature.
Each compressor performs the discharge pipe temperature protection control individually
in the following sequence.
[INV compressor]
[STD compressor]
In discharge pipe temp.
protection control
HTdi>115˚C
Tp>140˚C
HTdi :Value of INV compressor discharge pipe
temperature (Tdi) compensated with
outdoor air temperature
Tp :
Value of compressor port temperature
calculated by Tc and Te, and suction
superheated degree.
or
Normal operation
INV upper limit frequency:
1-step down from current
compressor frequency
INV upper limit frequency: 1-step up
from current compressor frequency
INV62 Hz + OFF + OFF
HTdi>115˚C
Tp>140˚C
or
Every 30 sec.
HTdi>135˚C
HTdi>120˚C for 10 min. or more.
or
HTdi<110˚C
Tp<125˚C
&
Every 60 sec.
HTdi>130˚C
HTdi>120˚C
for 90 sec.
or more.
or
HTdi<100˚C
Tp<110˚C
&
When occurring 3 times within 100 minutes,
the malfunction code “F3” is output.
Discharge pipe
temperature standby (for
a period of 10 minutes)
• HTds>120˚C continues for 5 min. or more.
• HTds>135˚C
• Tp>140˚C continues for 10 min. or more.
• Tp>150˚C
or
Applicable STD
compressor stops.
10 min.
Discharge pipe temp.
protection control not limited
HTds : Value of STD compressor discharge
pipe temperature (
Tds) compensated
with outdoor air temperature
Tp:
Value of compressor port temperature
calculated by Tc and Te , and suction
superheated degree.
Summary of Contents for VRV II RXYQ8MY1K
Page 53: ...Specifications Si39 502A 42 Specifications...
Page 143: ...Field Setting Si39 502A 132 Test Operation...
Page 258: ...Si39 502A Wiring Diagrams for Reference Appendix 247 FXCQ40M 50M 80M 125MVE 3D039557A...
Page 260: ...Si39 502A Wiring Diagrams for Reference Appendix 249 FXKQ25M 32M 40M 63MVE 3D039564A...
Page 264: ...Si39 502A Wiring Diagrams for Reference Appendix 253 FXMQ40M 50M 63M 80M 100M 125MVE 3D039620A...
Page 265: ...Wiring Diagrams for Reference Si39 502A 254 Appendix FXMQ200M 250MVE 3D039621A...
Page 266: ...Si39 502A Wiring Diagrams for Reference Appendix 255 FXHQ32M 63M 100MVE 3D039801C...
Page 267: ...Wiring Diagrams for Reference Si39 502A 256 Appendix FXAQ20M 25M 32M 40M 50M 63MVE 3D034206A...
Page 269: ...Wiring Diagrams for Reference Si39 502A 258 Appendix FXUQ71M 100M 125MV1 3D044973...
Page 270: ...Si39 502A Wiring Diagrams for Reference Appendix 259 FXAQ20MH 25MH 32MH 40MH 50MHV1 3D046348A...
Page 271: ...Wiring Diagrams for Reference Si39 502A 260 Appendix FXLQ20MH 25MH 32MH 40MH 50MHV1 3D046787A...
Page 272: ...Si39 502A Wiring Diagrams for Reference Appendix 261 BEVQ50MVE 3D046579A Notes...
Page 273: ...Wiring Diagrams for Reference Si39 502A 262 Appendix BEVQ71M 100M 125MVE 3D044901A Notes...
Page 285: ...Piping Installation Point Si39 502A 274 Appendix...
Page 293: ...Method of Replacing The Inverter s Power Transistors and Diode Modules Si39 502A 282 Appendix...
Page 307: ...Si39 502A iv Index...