EG_GenPro25e_1055_UG_002_UK
Page 42 / 58
Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCOGENER reserves the right to make any modification.
Dct_427_02
5 Use of the modem
5.1 Specific recommendations for the use of the modem in vehicles
The power supply connector of the modem GenPro 25e must NEVER be connected directly
to the battery of the vehicle.
5.1.1
Recommended connection on the battery of a truck
All trucks have a circuit breaker outside the cabin. The circuit breaker is used for security reasons:
The circuit breaker is connected to the ground of the truck, usually connected to the fuse box.
Most of truck circuit breakers do not cut the
+
'
PLUS
' of the battery, but cut its '
GROUND
'.
Figure 26 : Recommended connection on the battery of a truck
The scheme above shows a recommended power connection where the connection of the modem ground is
not directly connected to the battery, but connected after the circuit breaker (on the ground of the truck or in
the fuse box).
If this scheme is not respected, the modem can be damaged when starting the truck if the
circuit breaker is open. It cannot support important starting currents.
