Carel EVD4, User Manual, Page: 22 / 48

22
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
µC 2
230 Vac
Fig. 3.19
USB
convertitore /
converter
CVSTDUTTL0
A
GN
X
RT+ RT
-
B
Fig. 3.18
Fig. 3.20
G Vbat DI1 S4V S3 S2 S1
G0 GND DI2 S4I Vr1 Vr2 OC
NT
C -5
0T1
05 °C
S3
Temperature
NTC*WF*
Digital input
DI1
GND GND
DI1
ratio
OUT
Vr1
Ratiometric
pressure SPKT*R*
GND
P
S1
ENGL
ISH
EVD
4
+030220227 - rel. 2.1 - 12.06.2008
3.5 Application with supervisor (EVD000*42* and EVD000*45*) via RS485
3.5.1 Connections
Communication: connect GNX, RT+ and RT- to the converter CVSTDUMOR0 (Fig 3.17).
Confi guration: Connect the converter (CVSTDUTTL0 or CVSTD0TTL0) to the service serial port
and to a PC with USB or RS232 serial port (Fig. 3.18).
Power supply: connect G and G0 to the 24 Vac power supply (Fig 3.19)
Valve: connect the valve according to the type set for the “Valve type” parameter (Fig. 3.20).
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 technical leafl et.
3.5.2 List of parameters
Below is the list of parameters visible from the EVD4-UI, divided into write and read; 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
certain applications.
Key:
„
= Main parameters required to start operation;
†
= Secondary parameters required
for optimum operation; — = Advanced parameters.
WRITE
Mode Parameter name Parameter description
Mode dependent parameters (Fig. 3.21)
Main
Circuit/EEV ratio percentage of the maximum capacity managed by the valve
„
CH-Superheat set
superheat set point
„
CH-Prop. gain PID proportional factor
„
CH-Integral time integral time for superheat control
„
Advanced I
SH dead zone dead zone for PID control —
Derivative time PID derivative time
†
CH-Low Superheat low superheat value
†
LOP Cool Mode temperature at minimum operating pressure (LOP) in CH mode
†
MOP Cool Mode temperature at maximum operating pressure (MOP) in CH mode
†
Low SH int. time integral time for low superheat control —
LOP integral time integral time for low evaporation pressure (LOP) control —
MOP integral time integral time for high evaporation pressure (MOP) control —
Alarms del. Low SH low superheat alarm delay —
Alarms del. LOP low evaporation pressure (LOP) alarm delay —
Alarms del. MOP high evaporation pressure (MOP) alarm delay —
MOP startup delay MOP delay time when starting control —
Advanced II
EEV mode man. enable/disable manual valve positioning —
Requested steps required motor position in manual control —
BlockedValve check time after which the valve is considered as being blocked —
EVD probes type type of sensors used —
S2-Pt1000 calib. calibration index for PT1000 sensor —
Probes offset S1 correction of S1 —
Probes offset S2 correction of S2 —
Probes offset S3 correction of the lower limit of S3 —
Al. delay probe err. probe error alarm delay —
Open relais low SH enable/disable relay opening following low superheat —
Open relais MOP enable/disable relay opening following MOP —
Valve alarm enable/disable valve alarm
†
GN
X
RT+ RT
-
PHOENIX
®
MC1,5/3-ST-3,81
Supervisor
(RS485)
Fig. 3.17
Key:
A Service serial port
B Main serial port
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**