=A3.1 BCU BYD B-Box Premium
=A3.2 Battery BYD B-Box Premium HVS/HVM
=A3.x Battery BYD B-Box Premium HVS/HVM
P+
P-
12V IN
12V IN_GND
RS485A
RS485B
EN
EN_GND
CANL
CANH
X
=A4.1 BCU BYD B-Box Premium
=A4.2 Battery BYD B-Box Premium HVS/HVM
=A4.x Battery BYD B-Box Premium HVS/HVM
P+
P-
12V IN
12V IN_GND
RS485A
RS485B
EN
EN_GND
CANL
CANH
X
=A2.1 BCU BYD B-Box Premium
=A2.2 Battery BYD B-Box Premium HVS/HVM
=A2.x Battery BYD B-Box Premium HVS/HVM
P+
P-
12V IN
12V IN_GND
RS485A
RS485B
EN
EN_GND
CANL
CANH
OPTION A
OPTION B
X
OPTIONAL A OR B
OPTIONAL A OR B
CAN RS485
IN COM
PARALLEL
OUT COM
PARALLEL
ETHERNET
CAN RS485
IN COM
PARALLEL
OUT COM
PARALLEL
ETHERNET
CAN RS485
IN COM
PARALLEL
OUT COM
PARALLEL
ETHERNET
=A1 Fronius
GEN24 / GEN24 Plus
Primary Battery Secondary Battery #1 Secondary Battery #2
connection area at BCU´s:
*
The ferrite cores -Z1 to -Z8 are only mandatory for storage installations in Italy!
Certified ferrites for DC connection path: -Z1 to -Z3: WE742-712-21, manufacturer: Würth
Certified ferrites for communication connection: -Z4 to -Z8: WE742-711-12, manufacturer: Würth
FUSES
OPTIONALLY
FUSES
OPTIONALLY
FUSES
OPTIONALLY
MODE SWITCH
MODE SWITCH *
MODE SWITCH
* Note the
position of the
dip switches !
=A3.1-X0
PE
1
=A3.1-X7
3
=A3.1-X1
27
1
27
2
28
3
29
4
5
30
31
6
32
7
8
33
2
PE
=A4.1-X0
=A4.1-X7
1
3
1
=A4.1-X1
27
27
2
28
3
4
29
30
5
31
6
32
7
33
8
2
=A1-X5:A4 (BAT+)
=A1-X6:A1 (BAT-)
WE742-712-21
-Z3 *
-Z2 *
WE742-712-21
=A2.1-X0
PE
=A2.1-X7
1
3
1
42
=A2.1-X1
43
2
44
3
4
45
46
5
47
6
48
7
49
8
2
-Z1 *
WE742-712-21
=A2.1-X2 =A2.1-X3 =A2.1-X4 =A2.1-X5 =A2.1-X6
8
7
2
1
=A3.1-X2 =A3.1-X3 =A3.1-X4 =A3.1-X5 =A3.1-X6
=A4.1-X2 =A4.1-X3 =A4.1-X4 =A4.1-X5 =A4.1-X6
=A1+A2-X8:MO+
=A1+A2-X8:MO-
=A1+A2-X8:GND
=A1+A2-X8:V+
-Z5 *
WE742-711-12
-Z6 *
WE742-711-12
-Z7 *
WE742-711-12
-Z8 *
WE742-711-12
-Z4 *
WE742-711-12
-Z4 *
WE742-711-12
=A1+A2-X8:SHIELD
1
-X6
26
26
2
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