Figure 4.2
SGC 121 typical wiring
G
1
2
7
23 24
41
25 26
35
37
39 40
10 11 12 21 22
36
38
27 28 29 30
13 14
17
1
18
2
19
3
20
4
42
31 32
31 32 33 34
+
-
‐
+
+
12
0
E
C
U
‐
GOV
Tacho
F1
Supply
Analogue inputs
CAN A
ECU
D
C
(
+
)
D
C
(
-)
D+
Input
Input
Input
Input
Tacho
High
Low
E-Gov
D
at
a
+
(A
)
D
at
a
- (
B)
RS485
USB
AC voltage
Mains
N
L1
L2
L3
Digital inputs
(configurable)
In
In
In
In
In
AC current CT
AC voltage
genset
L1 (s1)
L1 (s2)
L2 (s1)
L2 (s2)
L3 (s1)
L3 (s2)
N
L1
L2
L3
F4
F5
GB
MB
L1
L2
L3
N
L1
L2
L3
N
s2
s1
P2
P1
s2
s1
P2
P1
P2
P1
s2
s1
3
4
5
6
8
9
Outputs
Output
Output
Output
Output
Output
Output
G
D+
B+
Sensor common
Engine
body
NOTE
•
Wiring diagrams are examples. Use the application's wiring diagram during installation.
•
Genset and mains contactor latching relays should be compiled against 4 kV surge as per IEC-61000-4-5 standard.
•
Relay cards used with the controller should be protected against reverse battery voltages.
•
Analogue input 2 used for
Fuel level sensor
can be wired with the reference to
Battery Negative
, see
Specifications,
Analogue resistive sensor inputs
.
•
Communication ports for CAN ( terminals 13 and 14) and RS-485 (terminals 31 and 32) have built-in 120 Ω resistors.
•
If a digital output is connected to a relay, the relay must include freewheeling diodes.
USER MANUAL 4189341226A UK
Page 19 of 72
