Carel EVD4, User Manual, Page: 19 / 48

19
Fig. 3.14
GN
X
RT+ RT
-
PHOENIX
®
MC1,5/3-ST-3,81
Fig. 3.16
G
G0
G V
bat
DI1 S4V S3 S2 S1
G0 GND DI2 S4I Vr1 Vr2 OC
EVD
4
0,8 A T
24 Vac
pCO
230 Vac
Fig. 3.15
ENGL
ISH
EVD
4
+030220227 - rel. 2.1 - 12.06.2008
3.4 Application with pCO (EVD000041* and EVD000044*) via pLAN
3.4.1 Connections
Communication: connect GNX, RT+ and RT- to the pCO unit (Fig. 3.14).
Power supply:
connect G and G0 to the 24 Vac (Fig. 3.15).
Valve: with reference to Fig. 3.16, connect the valve according to the type set for
the “Valve type” parameter;
Probes: Connect the ratiometric pressure sensors and NTC temperature sensors to S1 and S3
respectively.
For other types of probes or connections, change the value of the “EVD probes type”
parameter and see chap. 4
3.4.2 List of parameters
Below is the list of parameters; the meaning of each is detailed in APPENDIX II, while APPENDIX III shows a
list of the values of the reference parameters in relation to the most common applications.
In the standard application, the EVD4 read and write parameters are organised into three groups, accessible
from a pCO terminal: input/output, maintenance and manufacturer
The SYSTEM SET level must be compiled, as this contains the information on what is physically installed
in the system. Selecting the type of driver and enabling any advanced functions will allow access to
specifi c fi elds/masks in this or other menus.
The AUTO SETUP level of parameters must also be compiled, and contains fundamental information on
the type of unit.
The ADVANCED SET branch is not required for standard superheat control and is provided for expert
users and/or to implement non-standard functions.
MANUFACTURER group
SYSTEM SET
Key:
„
= Main parameters required to start operation;
†
= Secondary parameters required for optimum operation;
— = Advanced parameters.
Parameter name Description
EVD type
model of EVD used, from pCO
„
EVD probes type
number indicating the combination of sensors used to calculate the superheat
„
Valve type
number that defi nes the type of electronic valve used
„
Battery presence
enable valve not closed error, to be entered if the battery is present
„
Refrigerant
number indicating the type of refrigerant used
„
G Vbat DI1 S4V S3 S2 S1
G0 GND DI2 S4I Vr1 Vr2 OC
NT
C -5
0T1
05 °C
S3
NTC*WF*
Temp.
GND
ratio
OUT
Vr1
SPKT*R*
Press.
GND
P
S1
Sporlan
SEI
SEH
CAREL
DANFOSS
ETS
ALCO
EX5/6
2
1
4
3
1
2
3
4
Green
Black
Red
White
Green
Yellow
Brown
White
Green
White
Red
Black
Blue
White
Brown
Black
for code:
EVD00004**
Sporlan
SEI
SEH
CAREL
DANFOSS
ETS
ALCO
EX5/6
2
1
4
3
3
4
1
2
Green
Yellow
Brown
White
Green
Black
Red
White
Green
White
Red
Black
Blue
White
Brown
Black
for code:
EVD00014**