Carel Hecu CO2, User Manual

Page: 17 / 64

17
ENG
Hecu
C O
2
+0300085EN rel. 2.2 - 07.05.2019
3. Serial network confi guration
Hecu CO2 is fi tted with a built-in RS485 Fieldbus serial port and optional
RS485 BMS serial port. The RS485 Fieldbus serial line can be connected
to 2 Power+ inverters and up to 5 MPXPRO/UltraCella controllers. The
addresses are defi ned as shown in the following table. To simplify
commissioning with the default settings, it is recommended to set the
MPXPRO/UltraCella controllers with consecutive addresses, starting
from address 11. The following table shows the default values of serial
addresses for the connected MPXPRO/UltraCella controllers.
Device Address Device Address
Power+ 1 MPXPRO/UltraCella 3 13
Power+ 3 MPXPRO/UltraCella 4 14
MPXPRO/UltraCella 1 11 MPXPRO/UltraCella 5 15
MPXPRO/UltraCella 2 12
Serial address 3 is used for the parallel compressor inverter when this is
featured in the LT application.
Note: For LT units, the two inverter addresses must be 1 and 3. To
set these addresses (1 and 3), the corresponding dipswitches are set to 0
and 2, which when added to the basic address (1) will give the fi nal
addresses 1 and 3 (see the paragraph "Network address" on page 13).
C1
C2
L1/L L2/N L3 U V W
1 2 3 4 5 6 7 8 9 10
F
PE
C1
C2
AUX
master
MPX PRO
High
voltage
AUX
master
master
EVDEVO EVDEVO
master
MPX PRO
High
voltage
Fieldbus - Modbus® RS485
max 5 units
Supervisory
system
1
C1
C2
L1/L L2/N L3 U V W
1 2 3 4 5 6 7 8 9 10
F
PE
C1
C2
3
11
12 13
14
RPRV valve
J1
J9
J1
1
J1
2
J1
4
J1
6
J1
7
J1
8
J1
9
J
2
0
J
2
1
J
22
J
2
3
J
2
4
J1
0
J1
3
J
2
J3 J4 J5 J6
J8
J7
ON
1 2
OFF
RX
-/T
X
-
RX+/T
X+
GND V
out
RX
-/T
X
-
RX+/T
X+
GND
Fig. 2.n
Note : system communication is only compatible with MPXpro SW.
Important:
•
A possible short circuit on the Fieldbus serial line will compromise
operation of the system compressor.
•
As there is no software control on the connected device (MPXpro,
Ultracella), make sure during confi guration to set these correctly,
based on the physical address selected on the evaporator controller.
•
To set the power+, MPXpro and UltraCella addresses, see the
corresponding manuals.
Important: The system is only compatible with MPXpro SW revision
≥ 4.0 and UltraCella SW revision ≥ 2.0