E
N
C
A
R
A
V
A
N
S
P
D
U
-5
2
9
4 stage level 1 & 2, each pin is connected to a percentage mark (25%, 50%,
75%) and one is connected to base input for power. The NC in the 4 stage
level 1 stands for "not connected" and does not require an input.
Starter & main battery must be connected to the ground on the SPDU-52
(black cable connected to GND).
Charger and solar charger both have to be connected to the main battery
and common ground (GND on SPDU-52).
F1–F12 are connected to any external devices.
·
For example, F1 and F2 ports are connected to the main battery. F3
connects to the heating and so on.
(You can find the information of all relay connections on the physical cover
of the SPDU-52 or under the Diagram section)
5.1
Diagram
