Compressor Pi Control - Daikin ERQ Service Manual

Basic Control
2.2

Compressor PI Control

2.2.1 For Z-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
43
2.2.2 For X-, Y-Control
For T
2.2.3 Frequencies ERQ 100/125/140
STn INV(Fullload) INV(Unload)
1 36.0Hz
2 39.0Hz
3 43.0Hz
4 47.0Hz
5 52.0Hz
6 52.0Hz 57.0Hz
7 57.0Hz 64.0Hz
8 62.0Hz 71.0Hz
9 68.0Hz 78.0Hz
10 74.0Hz
∗ Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions.
Selection of full load operation to/from unload operation is made with the unload circuit solenoid valve
(Y3S=SVUL). The full load operation is performed with the SVUL set to OFF, while the unload operation is
performed with the SVUL set to ON.
24
L M (Normal) H
(factory
setting)
3 6 9
L M (Normal) H
(factory
setting)
46 49
, T : see field settings
e c
STn INV(Fullload) INV(Unload)
11 80.0Hz
12 86.0Hz
13 92.0Hz
14 98.0Hz
15 104.0Hz
16 110.0Hz
17 116.0Hz
18 122.0Hz
19 128.0Hz
20 134.0Hz
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.)
STn INV(Fullload) INV(Unload)
21
22
23
24
25
26
27
28
29
30
31
: http://splitoff.ru/tehn-doc.html
ESIE09-05
140.0Hz
146.0Hz
152.0Hz
158.0Hz
164.0Hz
170.0Hz
175.0Hz
180.0Hz
185.0Hz
190.0Hz
195.0Hz
Function