3 - EN
EWRC 300/500 NT
English
18
19 20 21
17
EWRC300/500 NT
16
15
14
13
12
11
10
9
UNICARD
COM
NO
NC
N
L
EWRC 500NT
only
OUT1 OUT2
OUT3
OUT4
OUT5
H21
230 Vac
H22
H23
H24
H25
COPY CARD
MFK
Yellow cable
DISPLAY
RS485
OPTIONAL
ELIWELL
ELIWELL
18
A
max
GND
GND
GND
+
+
1
2
3
4
5
6
7
8
PB1 PB2
DI2 DI1
+
+
PB3/DI3
ELECTRICAL CONNECTIONS
Output relay (default settings)
•
OUT1
relay 1 = Compressor
(or liquid line valve)
•
OUT2
relay 2 = Defrost
•
OUT3
relay 3 = Evaporator fan
•
OUT4
relay 4 = Light (EWRC 500 NT only)
OUT1-4 common-line max 18 A
•
OUT5
relay 5 = Alarm/AUX (EWRC 500 NT only)
Probe inputs (default settings)
•
Pb1
= NTC cold room probe
•
Pb2
= NTC defrost end probe
•
Pb3
= Not configured
To switch between NTC/PTC probe types use parameter
H00.
SWITCH OFF AND RESTART THE INSTRUMENT
after making the change.
Digital Inputs (default settings)
•
DI1
= Door switch
•
DI2
= not configured
•
DI3
= not configured
Serial ports
• TTL
for connection to UNICARD / Copy Card / MFK
• TTL
for connection to Televis
System
• RS485
available
ONLY
with optional Plugin module
for connection to Televis
System
/ Modbus.
Important! Make sure the appliance is switched off before working on the electrical connections.
• Probe and digital inputs, OUT5 relay: screw-on terminals pitch 5.01
: electric cables with max. cross-section
2.5 mm
2
(only one wire per terminal for power connections).
• Power supply and relay OUT1..OUT4: screw-on terminals pitch 7.62
: electric cables with max. cross-section
4 mm
2
(only one wire per terminal for power connections).