Installation; Din Rail Assembly And Dimensions; Description Of The Terminals; Connection Diagram - Superheat Control - Carel EVD evolution User Manual

2.1 DIN rail assembly and dimensions

EVD evolution is supplied with screen-printed connectors to simplify
wiring. The shield is connected with a spade terminal.
1 3 2 4
Power Supply E X V connection Relay
EVD
evolution
110
Analog – Digital Input Network
GND Tx/Rx
70
Fig. 2.a

2.2 Description of the terminals

Power Supply
EVD
evolution
aa
Analog – Digital Input
Fig. 2.b
Terminal Description
G, G0 Power supply
VBAT Emergency power supply
Functional earth
1,3,2,4 Stepper motor power supply
COM1, NO1 Alarm relay
GND Earth for the signals
VREF Power to active probes
S1 Probe 1 (pressure) or 4 to 20 mA external signal
S2 Probe 2 (temperature) or 0 to 10 V external signal
S3 Probe 3 (pressure)
S4 Probe 4 (temperature)
DI1 Digital input 1
DI2 Digital input 2
Terminal for tLAN, pLAN, RS485, Modbus® connection
Terminal for tLAN, pLAN, RS485, Modbus® connection
Terminal for pLAN, RS485, Modbus® connection
aa service serial port (remove the cover to access )
b serial port

2. INSTALLATION

45
60
1 3 2 4
E X V connection A Relay A
Network
GND Tx/Rx
b
Tab. 2.b

2.3 Connection diagram - superheat control

X
CAREL E V
230 Vac
24 Vac
2 AT
20VA(*)
5
EVDCNV00E0
7
(*) in combination with Alco EX7 or EX8 valves, use a 35 VA transformer
(code TRADRFE240)
Key:
1 green
2 yellow
3 brown
4 white
5 personal computer for confi guration
6 USB/tLAN converter
7 adapter
8 ratiometric pressure transducer - evaporation pressure
9 NTC suction temperature
10 digital input 1 confi gured to enable control
11 free contact (up to 230 Vac)
12 solenoid valve
13 alarm signal
Note:
•
connect the valve cable shield to the spade connector;
•
the use of the driver for the superheat control requires the use of the
evaporation pressure probe S1 and the suction temperature probe
S2, which will be fi tted after the evaporator, and digital input 1/2 to
enable control. As an alternative to digital input 1/2, control can be
enabled via remote signal (tLAN, pLAN, RS485). For the positioning of
the probes relating to other applications, see the chapter on "Control";
•
inputs S1, S2 are programmable and the connection to the terminals
depends on the setting of the parameters. See the chapters on
"Commissioning" and "Functions";
•
pressure probe S1 in the diagram is ratiometric. See the general
connection diagram for the other electronic probes, 4 to 20 mA or
combined;
•
four probes are needed for superheat control with SIAM ANB
compressors, two to measure the superheat and two to measure the
discharge superheat and the discharge temperature. See chap. 5.
"EVD evolution" +0300005EN - rel. 3.1 - 25.07.2011
9
ENG
4
2
12 13
3
S
1
shield
11
1 3 2 4
NET
OPEN
CLOSE
GND
Tx/Rx
8 9
10
Fig. 2.c