SiUS042113E
Control Specification
Part 4 Functions and Control
63
PI Control
1.
P control
The
D value is calculated in each sampling time (20 seconds), and the frequency is adjusted
according to its difference from the frequency previously calculated.
2.
I control
If the operating frequency does not change for more than a certain fixed time, the frequency is
adjusted according to the
D value.
When
D value is low, the frequency is lowered.
When
D value is high, the frequency is increased.
3.
Frequency control when other controls are functioning
When frequency is dropping:
Frequency control is carried out only when the frequency drops.
For limiting lower limit:
Frequency control is carried out only when the frequency rises.
4.
Upper and lower limit of frequency by PI control
The frequency upper and lower limits are set according to the command of the indoor unit.
When the indoor or outdoor unit quiet operation command comes from the indoor unit, the upper
limit frequency is lower than the usual setting.
3.3 Standby Electricity Saving (Suspend Function)
Outline
This function is to save standby electricity consumption while the air conditioner is not in operation
by partially separating the electrical circuit of indoor and outdoor units from the power source.
Details
Standby electricity saving function can be activated/deactivated from the service mode of the
remote controller. Refer to page 155 for details.
When standby electricity saving is ON, the system enters suspend state if both indoor and
outdoor units are not in operation.
The system will not go into suspend state when some voltage is applied to the outdoor unit for
protection purpose even if the indoor unit is not in operation.
In suspend state, power supply to the outdoor unit is halted and there is no communication
between the indoor unit and the outdoor unit.
Also the service monitor LED (LED A) lights off.
To return from the suspend state, start fan or other operation to turn on the indoor unit.
Содержание FTXM-V Series
Страница 13: ...SiUS042113E Part 1 General Information 9 1 Applicable Models 10 2 Functions 11 Part 1 General Information...
Страница 16: ...SiUS042113E 12 Part 2 Specifications 1 Specifications 13 Part 2 Specifications...
Страница 96: ...Troubleshooting SiUS042113E 92 Part 6 Service Diagnosis Reference Check No 01 Refer to P 134...
Страница 147: ...SiUS042113E Check Part 6 Service Diagnosis 143 09 12 class 18 24 class 1 2 3 4 Multimeter R24538 1 2 3 4 Multimeter...
Страница 150: ...Check SiUS042113E 146 Part 6 Service Diagnosis 18 24 class R24539 DC DC W V U...
Страница 165: ...SiUS042113E Piping Diagrams Part 8 Appendix 161 1 2 Outdoor Unit RXM09 12VVJU RXM18VVJU 3D131979 3D132216...
Страница 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...
Страница 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...
