27
4.7. Data for Electrical Interconnection
a) Power supply
The power supply must be individual per module. The switchboard has a power terminal for this connection.
b) Communication
All modules must be interconnected via a communication terminal named BC1. The control (thermostat) must also be
connected to this bus.
FIG. 20
12 V
GND
MESTRE
30EVA / 30EXA
30EXA
ESCRAVA 1
A
B
12 V GND
BC1
A
B
12 V GND
BC1
A
B
... até 30EXA ESCRAVA 8
30EVA / 30EXA
MASTER
30EXA
SLAVE1
12 V
GND
A
B
BC1 12 V G N D A
B
BC1 12 V G N D A
B
... Up to 30EXA SLAVE 8
FIG. 19
30EXA2 A 30EXA8
SLAVE
30E
30E
30E
3
30E
30E
30E
30
E
3
3
3
30
3
30
30
0E
E
3
3
30
0
0
0
E
E
0E
3
30
0
0E
E
3
3
0
0
0E
E
3
3
3
3
0
0
0
0
0
0
0
0
E
E
E
E
3
3
3
0
0
0
E
XA2
XA
XA2
XA
XA2
XA2
X
X
XA
X
2
2
XA
X
XA
A
A2
X
XA
XA
X
X
A
A
A2
XA
XA
XA
A
A
2
XA
XA
A
A2
X
X
X
XA
A
A
A
A
XA
A
2
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
30E
30E
30E
30E
30E
30
30
0E
0
E
30
0E
0E
0E
0E
30E
E
30
0
0
0
0
E
E
3
30
0
0
0
0
0
E
E
3
30
0
E
0
XA8
XA8
XA8
8
XA8
8
XA8
8
A
A8
XA8
A8
X
8
A8
XA8
XA8
A8
A8
A8
X
X
A8
8
X
X
X
X
A
X
XA
X
A
A8
A8
A
A
A
A
A
8
8
8
8
8
XA8
X
A
A
A
A
A
A8
8
8
8
8
8
8
XA8
XA8
8
8
8
8
8
8
8
8
8
SLA
VE
Diameter to be dimensioned
as per
Power
switch
as per
NBR5410
380/440V - 3F + N + GND
30EVA / 30 EXA
MASTER
Diameter to be dimensioned
as per
Power
switch
as per
NBR5410
380/440V - 3F + N + GND
30EXA2 A 30EXA8
SLAVE
POWER CABLE
FOR SWITCHBOARD 220V -
3F + GND
POWER CABLE
FOR SWITCHBOARD 220V -
3F + GND
e 19
Cables dimensioned in fi eld
Cables dimensioned in fi eld
