Carel EVD4 - Application with Supervisor (EVD000*42* and EVD000*45*) Via RS485

22
G
G0
G Vbat 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
GNX RT+ RT-
B
Fig. 3.18
Fig. 3.20
G Vbat DI1 S4V S3 S2 S1
G0 GND DI2 S4I Vr1 Vr2 OC
NTC -50T105 °C
S3
Temperature
NTC*WF*
Digital input
DI1
GND
GNDDI1
ratiometric +
OUT
Vr1
Ratiometric
pressure SPKT*R*
GND
P
S1
ENGLISH
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 
GNX 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**