DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

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General Information
High Voltage Battery Terminal
The figures below show an example of an MCU DC
connection where the High Voltage battery (Traction
Battery) is connected.
High-voltage Battery
The high-voltage battery must be connected to the
MCU using specific cable assemblies. The table
below is an example for the cable specifications.
Refer to the Dana TM4 extranet site under your
product family within the "Accessory" tab for the cable
specifications.
Important Note : It is absolutely necessary to regard
the safety precautions for the High Voltage Battery
before connecting the High Voltage Cables.
High Voltage Battery Short Circuit Protection
The MCU requires a fuse on the High Voltage DC
bus. Proper fuse rating is necessary to protect
against reverse polarity and short-circuit. Dana TM4
recommends installing a fuse with the following
characteristics:
Refer to the "Application Note - TM4 SUMO Fuse
and DC Cable Selection" published on the
"Knowledge base" section of the Dana TM4
extranet site for proper fuse selection.
High-voltage battery pre-charge circuit
The system requires the protection of a pre-charge
circuit without which the system start-up sequence
will fail and the MCU may be permanently damaged.
This pre-charge mechanism will protect the system
from component stress during each power-up
thereby reducing the risk of damage to system
components and promoting component reliability.
Notes** :
1. The wire size or wire wall material can be adapted
to fit required use.
2. Depending on the location of the wires, a wire
tubing (orange split loom) can be used to prevent
abrasion or other effects that could damage the
wires.
Polyester expandable sleeving is
recommended since it provides durable abrasion
resistance over the cable without compromising
the air circulation around the cable.
3. Based on a temperature of 85 °C.
4. The color orange is recommended for safety
purposes when handling high voltage levels.
5. The external cables used for high-voltage are be
orange and shielded.