Master module for process control of R744 refrigeration plants
4
HCO2-G4_R.1.0.9_V8.1.4_PI_2018-12_EN
Subject to technical changes
HCO
2
-G4
1.5 Circuit diagram
Fig. 4: HCO
2
-G4 circuit diagram
Wiring and enabling several master modules
Fig. 5: Wiring and enabling master modules
1.6
Technical data
11
12
13
14
15
16
17
27
26
25
24
23
22
21
29
28
0V
L
S
C-BUS
H
F-BUS
H
S
L
0V
F-BUS
C-BUS
99
98
OUTPUT
INPUT
71
72
73
74
81
82
83
84
L
N
OFF
ON
OFF
ON
Modbus1
HR 1 Request - Step 2
Fault(NC) REF MP Min
Fault(NC) REF MP Max
Fault(NC) UPS
HR 1 Valve
HR 1 Request - Step 1
HR 1 Pump
Desuperheater LT
Hot gas bypass
Post-injection
Fast return MT
11
11
11
12
12
12
24V
24V
24V
Access
barrier
Access
barrier
Access
barrier
Power supply
230V~, +10% / -15%, 50Hz, max. 13VA
Display
Graphical display with backlight
1 x red LED, flashes in case of fault
1 x green LED, for parameter adjustment
1 x yellow LED, for C-BUS operating status
1 x yellow LED, for F-BUS operating status
Communication C-BUS
3-wire CAN bus interface, shielded, galvanically isolated, 2.5mm² push-
in terminals / RJ45 socket and switchable terminating resistor for com-
munication with system devices
Communication F-BUS
3-wire CAN bus interface, shielded, galvanically isolated, 2.5mm² push-
in terminals / RJ45 socket and switchable terminating resistor for com-
munication with field modules
Communication Modbus
3-wire Modbus RTU, galvanically isolated, RJ45 socket
Digital inputs
6 x 24V=, self-powered, 5mA approx. per input, push-in terminals
2.5mm²
Digital outputs
8 x normally open contact with common supply, 1A, rated voltage 230V~,
push-in terminals 2.5mm²
Dimensions
(WxHxD) 109 x 109 x 92mm
Housing
Plastic, foil
Fastening
In MGR installation frame, individual installation with ZEM
Ambient temperature
Operation: 0...+55°C, storage: -25...+70°C
Weight
About 650g
CE conformity
2014/30/EU (EMC Directive)
2014/35/EU (Low Voltage Directive)
EAC conformity
TR ZU 004/2011
TR ZU 020/2011
RoHS II
Valid from
Revision 1.0.8 / Version 8.1.4
