C6.1.9/0219/E
17
2.10 Controller keyboard
2.10.1 How to lock the keyboard
Keep the
and
keys pressed simultaneously for more than 3 seconds. The
"PoF"
message
will be displayed and the keyboard will be locked. At this point it is only possible to see the setpoint
or the maximum or minimum temperatures stored. If a key is pressed for more than 3 seconds, the
"PoF"
message will be displayed.
2.10.2 How to unlock the keyboard
Keep the
and
keys pressed simultaneously for more than 3 seconds, till the
"Pon"
message
is displayed.
2.11 Parameters level 1
– Required settings
The XCM25D is preconfigured to reduce the required settings on job-site to a minimum. In most
cases it will not be necessary to enter programming level 2
"Pr2"
.
Table 14
gives an overview of the
parameters available in programming level 1
"Pr1"
.
Code
Description
Range
Factory
setting
MT
Factory
setting
LT
C07
Refrigerant selection
for regulation
R404A(0-404) - R507(1-507) - R134A(2-134)
R22(3-R22) - R407C(4-07C) - R407A(5-07A)
R407F(6-07F) - R448A(48A) - R449A(8-49A)
- R410A(9-410)
8-R449A 8-R449A
C16
Digital compressor
setpoint
C03 to C04
2.8
0.3
C17
Proportional band for
compressor regulation
0.1 to 9.9 bar; 0.1 to 99.9 PSI;
0.1°C to 25.5°C
2.0
1.0
C21
Cycle time for digital
compressor
10 to 40 sec
10
10
C24
Minimum capacity for
digital compressor
0 to C25
20
10
E62
Maximum fan motor
speed
30 to 100%
100
80
E66
Delta temperature
condenser floating
setpoint
0.0°C to 25.5°C
14
8
T18
Access to Pr2 level
[0÷999]
3 2 1
3 2 1
Table 14: Parameters in programming level Pr1
NOTE: The full list of parameters in programming level "Pr2" can be found in Technical
Information CC7.8.13 "
Copeland EazyCool™ Large Outdoor Condensing Units – iPro XCM25D
Controller Parameter List".
2.12 Digital operation
A Digital unit is able to operate in part-load mode. Part-load operation is achieved by loading and
unloading of the Digital scroll compressor for certain periods of time (time cycles). The cycle of time
can be chosen between 10 and 30 seconds. Example: if the time cycle is 20 seconds at 50% of
capacity request, the compressor will run for 10 seconds loaded and 10 seconds unloaded. For
proper commissioning of the Digital unit the diagram in
Figure 15
must be considered.
The regulation starts when the suction pressure (
AI1
) increases and reaches the value
(SP-PB/2+(PB*PMI)/100)
or
(C16-C17/2+(C17*C24)/100). Within the
adjustment
range
(SP-PB/2~SP+PB/2) or (C16
–C17/2 ~ C16+C17/2) the Digital scroll compressor is activated in PWM
mode in accordance with the value of the control variable.
When the pressure is higher than (SP + PB/2) or (C16 + C17/2) then the TRIAC output is at maximum
capacity. When the pressure is lower than (SP + PB/2) or (C16 + C17/2) but higher than (SP-PB/2)
the Digital Scroll compressor modulates the capacity according to the proportional band. If the
pressure is lower than (SP-PB/2)/ (C16-C17/2) the Digital Scroll compressor switches off.
Содержание Copeland Eazycool OLTE-82D-TFD
Страница 1: ...Application Guidelines Copeland Eazycool Large Outdoor Condensing Unit ...
Страница 5: ......
