freightliner PX113064S T 2016, Руководство пользователя

Страница: 118 / 236

Low-Voltage Battery
Disconnect Procedure
NOTICE
The low-voltage batteries on this vehicle are
wired in series and in parallel to allow for both
12V and 24V power. Failure to follow the
disconnect procedure could cause sparks and
issues with the vehicle’s electrical system.
1.
Remove the three fasteners connecting the
negative 12V battery strap, shown in
Fig. 9.5,
and remove the strap from the vehicle.
2.
Disconnect the positive battery cable access
(BCA) cable and move it out of the way.
3.
Remove the remaining four fasteners to remove
the remaining cables from the batteries. Remove
the cables from the vehicle.
4. Remove the three fasteners to remove the
positive 24V connection plate.
Smart Battery Shut-Off Switch
WARNING
Turning the smart battery shut-off switch to OFF
does not disconnect power to all electrical
components (e.g. the starter and sSAM). To work
on the vehicle safely, the vehicle must be
decommissioned.
IMPORTANT: The keyswitch should be in the off
position before turning the smart battery shut-off
switch on or off.
The smart battery shut-off switch is located inside the
cab on the outboard side of the driver’s seat.
The smart battery shut-off switch can be used to
open (turn off) or close (turn on) the circuits between
the low-voltage battery and the battery cable access
box (BCA). Where pressing the eStop button
prevents the high-voltage system from turning on,
turning off the smart battery shut-off switch disables
the low-voltage power that enables cab and chassis
functions.
To avoid accidental activation, the smart battery shut-
off switch must be pressed and held for two seconds
when turning on or off.
A vehicle in daily use would have the smart battery
shut-off switch turned ON. When the switch is set to
ON, a red LED indicator on the switch illuminates.
See
Fig. 9.6. The switch has interlocks to prevent it’s
status from being changed while a vehicle is in
operation.
Turning the smart battery shut-off switch OFF
minimizes the power draw on the battery, preserving
battery life and the ability of the vehicle to start after
being parked for a number of days.
The smart battery shutoff switch should be set to
OFF if the vehicle is going to be parked for more
than two days.
Electric Vehicle Power
Distribution
The electric vehicle power distribution system
provides battery power to the electrical and electronic
systems.
The following components make up the electrical
vehicle power distribution system:
•
Battery Cable Access (BCA)
f080431 07/02/2022
1
2 3 3
3 4
1. Remove the negative 12V battery strap.
2. Disconnect the positive BCA cable.
3. Remove the remaining cables.
4. Remove the positive 24V connection plate.
Fig. 9.5, Low-Voltage Battery Disconnect Process
Electrical System
9.5