Basic Control
Mini UM S/M
34
Function
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]
[Heating operation]
Controls compressor capacity to adjust Te to
achieve target value (TeS).
Te : Low pressure equivalent saturation temperature
(˚C)
Te setting (Set in Set-up mode 2)
TeS : Target Te value
(Varies depending on Te setting, operating
frequency, etc.)
L
M (Normal)
(factory
setting)
H
3
6
9
Controls compressor capacity to adjust Tc to
achieve target value (TcS).
Tc : High pressure equivalent saturation temperature
(˚C)
Tc setting
TcS : Target Tc value
(Varies depending on Tc setting, operating
frequency, etc.)
L
M (Normal)
(factory
setting)
H
43
46
49
U-4-5-6ML3DPQ
STEP
INV
1
52Hz
2
57Hz
3
62Hz
4
68Hz
5
74Hz
6
81Hz
7
88Hz
8
96Hz
9
104Hz
10
110Hz
STEP
INV
11
116Hz
12
124Hz
13
133Hz
14
143Hz
15
158Hz
16
165Hz
17
177Hz
18
189Hz
19
202Hz
20
210Hz
∗
Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions.
Mini UM.book Page 34 Monday, January 24, 2005 11:32 AM
