Carel EVD Evolution Twin - 2.6 Shared pressure probe

ENG
“EVD Evolution TWIN” +0300006EN - rel. 2.6 - 31.01.2019
11
2 CAREL valves connected
in parallel mode
2 CAREL valves connected in
complementary mode
1
3
24
4
1
2
3
CAREL E
X
V
VALVE A_2
CAREL E
X
V
VALVE A_1
4
1
2
3
1
3
24
4
1
2
3
CAREL E
X
V
VALVE B_2
CAREL E
X
V
VALVE B_1
4
3
2
1
Fig. 2.h
Important: in the case of installations with four valves, the EVD0000UC0
module cannot guarantee all four will close in the event of power failures.
Note: operation in parallel and complementary mode can only be
used for CAREL valves, within the limits shown in the table below, where OK
means that the valve can be used with all refrigerants at the rated operating
pressure.
Model of CAREL valve
E2V E3V E4V E5V E6V E7V
Two EXV
con-
nected
together
OK E3V45, MOPD=35bar
E3V55, MOPD=26bar
E3V65, MOPD=20bar
E4V85, MOPD=22bar
E4V95, MOPD=15bar
NO NO NO
Tab. 2.b
Nota: MOPD = Maximum Operating-Pressure Dierential
2.6 Shared pressure probe
Only 4 to 20 mA pressure probes (not ratiometric) can be shared. The probe
can be shared by a maximum of 5 drivers. For multiplexed systems where
twin1, twin2 and twin 3 controllers share the same pressure probe, choose the
normal option for driver A on the twin 1 controller and the “remote” option for
the other drivers. Driver B on the twin3 controller must use another pressure
probe, P2.
Example
twin1 twin2 twin3
Probe S1
(driver A)
-0.5 to 7 barg (P1) remote, -0.5 to 7 barg remote,
-0.5 to 7 barg
Probe S3
(driver B)
remote, -0.5 to 7 barg remote, -0.5 to 7 barg -0.5 to 7 barg (P2)
Tab. 2.c
Tx/RxGND DI1
S4
S3
S2
S1
GND
DI2 VREF
TWIN 1
TWIN 2
TWIN 3
P1
P2
Tx/RxGND
DI1
S4
S3
S2
S1
GND
DI2 VREF
Tx/RxGND DI1
S4
S3
S2
S1
GND
DI2 VREF
Fig. 2.i
Key:
P1 shared pressure probe
P2 pressure probe
2.7 Connecting the USB-tLAN converter
Procedure:
• remove the LED board cover by pressing on the fastening points;
• plug the adapter into the service serial port;
• connect the adapter to the converter and then this in turn to the computer
• power up the controller
press
press
OPEN
CLOSE
EVD
evolution
Fig. 2.j
G
G0
VBAT
COMA
NOA
1
3
24
NET
GND
DI1
S4
S3
S2
S1
GND
DI2 VREF
EVD4 PC
EVD4 service USB adapter
EEV driver
4
EVDCNV00E0
Analog - Digital Input Network
OPEN A
CLOSE A
OPEN B
CLOSE B
A
B
COMB
NOB
1
3
24
EVD evolution
TWIN
3
4
2
1
Tx/Rx
Fig. 2.k
Key:
1 service serial port
2 adapter
3 USB/tLAN converter
4 personal computer
Note: when using the service serial port connection, the VPM program
can be used to congure the controller and update the controller and display
rmware, downloadable from http://ksa.carel.com. See the appendix.