Control Specification
SiBE04-808_B
51
Function and Control
3.5
Input Current Control
Outline
The microcomputer calculates the input current during the compressor is running, and sets the
frequency upper limit from the input current.
In case of heat pump model, this control which is the upper limit control of the frequency takes
priority to the lower limit of control of four way valve operation compensation.
Detail
Frequency control in each zone
Stop zone
After 2.5 seconds in this zone, the compressor is stopped.
Drooping zone
The upper limit of the compressor frequency is defined as operation frequency – 2 Hz.
After this, the output frequency is pulled down by 2 Hz every second until it reaches the keep
zone.
Keep zone
The present maximum frequency goes on.
Reset zone
Limit of the frequency is canceled.
RK(X)S20-50G2V1B, ARXS20-50G2V1B
20 class
25 class
35 class
Cooling
Heating
Cooling
Heating
Cooling
Heating
A
(A)
9.25
9.25
9.25
B
(A)
Normal mode
6.0
7.5
6.5
7.5
7.25
8.25
ECONO mode
3.25
3.25
3.25
C
(A)
Normal mode
5.25
6.75
5.75
6.75
6.5
7.5
ECONO mode
2.5
2.5
2.5
42 class
50 class
Cooling
Heating
Cooling
Heating
A
(A)
14.25
20.0
B
(A)
Normal mode
10.0
10.5
10.0
15.0
ECONO mode
4.5
7.0
10.5
C
(A)
Normal mode
9.0
9.5
9.0
14.0
ECONO mode
3.5
6.0
9.5
Compressor Stop
Drooping Zone
Stop Zone
Keep Zone
Reset Zone
(R13572)
A
B
C
