CONTROL SYSTEM
11-2
SM YUD 2-A.1 GB
2. I control
If the operating frequency is not change more than a certain fixed time, adjust the frequency up
and down according to the
Δ
D
value.
Obtaining the fixed
Δ
D
value
When the
Δ
D
value is small- decrease the frequency
When the
Δ
D
value is large- increase the frequency
3. Frequency management when other controls are functioning
When frequency is drooping;
Frequency management is carried out only when the frequency droops.
For limiting lower limit
Frequency management is carried out only when the frequency rises.
4. Maximum and minimum limits of frequency by PI control
The frequency upper and lower limits are set depending on indoor unit.
When low noise commands come from the indoor unit or when outdoor unit low noise or quiet
commands come from indoor unit, the upper limit frequency must be lowered than the usual setting.
11.1.3.1 Frequency range
The compressor frequency limitation is set by the following table
Minimum Frequency(MinFreq)
Mode
24 30 36 36 42 48 60
Cooling
20 20
20 20 20 20 20
Heating
20 20
20 20 20 20 20
The maximum allowed frequency is extracted from the following:
Maximum Frequency(MaxFreq)
Mode
ODU
IDU
YUD 024
YUD 030
YUD 036
YUD 036T
YUD042
YUD 048
YUD 060
DBD
65 72 66 66 - 70 70
CAD
68 70 70 70 77 - -
Cooling
FAD
70 70 70 70 - 70 -
DBD
65 68 65 65 - 75 74
CAD
65 70 68 72 75 - -
Heating
FAD
65 70 70 70 - 75 -
11.1.4.1 Frequency Changes Control
Frequency change rate is 1 Hz/sec.
11.1.4.2 Minimum On and Off Time
Prohibit turning ON the compressor for 3 minutes after turning it off.(except during deicing
protection)
Summary of Contents for YUD024
Page 28: ...OUTLINE DIMENSIONS 4 4 SM YUD 2 A 1 GB 4 5 3 Outdoor unit YUD 048 060 ...
Page 48: ...WIRING DIAGRAMS SM YUD 2 A 1 GB 8 1 8 WIRING DIAGRAMS 8 1 AWAU YUD024 H11 AWAU YUD030 H11 ...
Page 49: ...WIRING DIAGRAMS 8 2 SM YUD 2 A 1 GB 8 2 AWAU YUD036 H11 ...
Page 50: ...WIRING DIAGRAMS 8 3 AWAU YUD036 H13 AWAU YUD042 H13 SM YUD 2 A 1 GB 8 3 ...
Page 51: ...WIRING DIAGRAMS 8 4 SM YUD 2 A 1 GB 8 4 AWAU YUD048 H13 AWAU YUD060 H13 ...
Page 52: ...WIRING DIAGRAMS SM YUD 2 A 1 GB 8 5 8 5 AWSI CAD024 N11 ...
Page 53: ...WIRING DIAGRAMS 8 6 SM YUD 2 A 1 GB 8 6 AWSI CAD030 036 042 N11 ...
Page 54: ...WIRING DIAGRAMS 8 7 AWSI FAD024 N11 SM YUD 2 A 1 GB 8 7 ...
Page 55: ...WIRING DIAGRAMS 8 8 SM YUD 2 A 1 GB 8 8 AWSI FAD030 036 048 N11 ...
Page 56: ...WIRING DIAGRAMS 8 9 AWSI DBD024 030 036 048 060 N11 SM YUD 2 A 1 GB 8 9 ...
Page 79: ...SPARE PARTS LIST 13 3 Exploded view of Indoor unit DBD024 060 SM YUD 2 A 1 GB 13 3 ...
Page 81: ...SPARE PARTS LIST 13 5 Exploded view of Indoor unit DBD036 SM YUD 2 A 1 GB 13 5 ...
Page 83: ...SPARE PARTS LIST 13 7 Exploded view of Indoor unit DBD060 SM YUD 2 A 1 GB 13 7 ...
Page 85: ...SPARE PARTS LIST 13 9 Exploded view of Indoor unit CAD024 SM YUD 2 A 1 GB 13 9 ...
Page 87: ...SPARE PARTS LIST SM YUD 2 A 1 GB 13 11 13 11 Exploded view of Indoor unit CAD030 ...
Page 89: ...SPARE PARTS LIST 13 13 Exploded view of Indoor unit CAD036 042 SM YUD 2 A 1 GB 13 13 ...
Page 92: ...SPARE PARTS LIST 13 16 SM YUD 2 A 1 GB 13 16 Exploded view of Indoor unit FAD024 ...
Page 94: ...SPARE PARTS LIST 13 18 SM YUD 2 A 1 GB 13 18 Exploded view of Indoor unit FAD030 036 ...
Page 97: ...SPARE PARTS LIST 13 21 Exploded view of Indoor unit FAD048 SM YUD 2 A 1 GB 13 21 ...
Page 99: ...SPARE PARTS LIST 13 23 Exploded view of outdoor unit YUD024 030 SM YUD 2 A 1 GB 13 23 ...
Page 101: ...SPARE PARTS LIST 13 25 Exploded view of outdoor unit YUD036 SM YUD 2 A 1 GB 13 25 ...
Page 103: ...SPARE PARTS LIST 13 27 Exploded view of outdoor unit YUD036T YUD042 SM YUD 2 A 1 GB 13 27 ...
Page 105: ...SPARE PARTS LIST 13 29 Exploded view of outdoor unit YUD048 060 SM YUD 2 A 1 GB 13 29 ...
Page 107: ...APPENDIX 14 APPENDIX APPENDIX SM YUD 2 A 1 GB 14 1 ...