Control Specification
SiBE04-302
46
Function and Control
3.2
Frequency Control
Outline
Frequency will be determined according to the difference between room and set temperature.
The function is explained as follows.
1. How to determine frequency.
2. Frequency command from an indoor unit. (The difference between a room temperature and
the temperature set by the remote controller.)
3. Frequency command from an indoor unit.
4. Frequency initial setting.
5. PI control.
Detail
How to Determine Frequency
The compressor’s frequency will finally be determined by taking the following steps.
For Heat Pump Model
1. Determine command frequency
Command frequency will be determined in the following order of priority.
1.1 Limiting frequency by drooping function
Input current, discharge pipes, low Hz high pressure limit, peak cutting, freeze-up protection,
dew prevention, fin thermistor temperature.
1.2 Limiting defrost control time
1.3 Forced cooling
1.4 Indoor frequency command
2. Determine upper limit frequency
Set a minimum value as an upper limit frequency among the frequency upper limits of the
following functions:
Compressor protection, input current, discharge pipes, Low Hz high pressure, peak cutting,
freeze-up protection, defrost.
3. Determine lower limit frequency
Set a maximum value as an lower limit frequency among the frequency lower limits of the
following functions:
Four way valve operating compensation, draft prevention, pressure difference upkeep.
4. Determine prohibited frequency
There is a certain prohibited frequency such as a power supply frequency.
For Cooling Only Model
1. Determine command frequency
Command frequency will be determined in the following order of priority.
1.1 Limiting frequency by drooping function
Input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature.
1.2 Indoor frequency command
2. Determine upper limit frequency
Set a minimum value as an upper limit frequency among the frequency upper limits of the
following functions:
Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention,
fin thermistor temperature.
Command frequency
Limit frequency
Skip control
Upper limit function
Compressor protection function
Lower limit function
Four-way valve operating compensation, etc. (*)
Initial frequency
PI control
Defrost control (*)
Drooping function
Input current control, etc.
Upper limit frequency
FMAX
Lower limit frequency
FMIN
Target frequency
Command frequency X repeats when frequency becomes lower
Frequency changes by PI control < repeats when frequency becomes lower
*; only for heat pump model
(R2831)
Содержание ARK25BVMB
Страница 10: ...SiBE04 302 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 Cooling Only 2 1 2 Heat Pump 5 ...
Страница 17: ...Functions SiBE04 302 8 List of Function ...
Страница 31: ...Specifications SiBE04 302 22 Specifications ...
Страница 137: ...Check SiBE04 302 128 Service Diagnosis ...
Страница 170: ...SiBE04 302 Outdoor Unit Removal Procedure 161 2 Slide the MID upward and release Step Procedure Points ...
Страница 172: ...SiBE04 302 Outdoor Unit Removal Procedure 163 4 Remove the fan motor Step Procedure Points ...
Страница 177: ...Outdoor Unit SiBE04 302 168 Removal Procedure 2 Slide the reactor assembly this side and release Step Procedure Points ...
Страница 184: ...SiBE04 302 Others 175 Part 8 Others 1 Others 176 1 1 Explanation 176 1 2 Jumper Settings 177 ...
Страница 195: ...Wiring Diagrams SiBE04 302 186 Appendix ...
Страница 199: ...SiBE04 302 iv Index ...