Compressor Pi Control - Daikin R-410A Service Manual

Basic Control
2.2

Compressor PI Control

Compressor PI Control

Carries out the compressor capacity PI control to maintain Te at constant during cooling
operation and Tc at constant during heating operation to ensure stable unit performance.
[Cooling operation]
Controls compressor capacity to adjust Te to
achieve target value (TeS).
Te setting (Set in Set-up mode 2)
[Heating operation]
Controls compressor capacity to adjust Tc to
achieve target value (TcS).
Tc setting
RXYSQ4 · 5 · 6M
STEP
1
2
3
4
5
6
7
8
9
10
∗ Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions.
40
L M (Normal) H
(factory
setting)
3 6 9
L M (Normal) H
(factory
setting)
43 46 49
INV
52Hz
57Hz
62Hz
68Hz
74Hz
81Hz
88Hz
96Hz
104Hz
110Hz
Te : Low pressure equivalent saturation temperature
(°C)
TeS : Target Te value
(Varies depending on Te setting, operating
frequency, etc.)
Tc : High pressure equivalent saturation temperature
(°C)
TcS : Target Tc value
(Varies depending on Tc setting, operating
frequency, etc.)
STEP
11 116Hz
12 124Hz
13 133Hz
14 143Hz
15 158Hz
16 165Hz
17 177Hz
18 189Hz
19 202Hz
20 210Hz
SiBE39-402A
INV
Function