DANA TM4 SUMO MD MV, Troubleshooting Manual

Page: 178 / 182

178
Appendix
Remove electrical connections
Safety precaution
Safety instructions related to electrical
removal/installation:
Electrical connections should be handled by fully
trained personnel. High voltage, potentially as high as
750V for a HV system may be present and this should
be seen as a dangerous and possibly lethal source.
Always follow recommended precautions when
handling electrical equipment. The MCU stores
electrical energy during operation and may retain it for
some time after it is powered-off. It is highly
recommended to ensure that the internal energy has
dissipated before proceeding with the electrical
disconnection of the unit.
ESD sensitive
– do not touch connector pins.
•
The internal electronics are sensitive to
electrostatic discharges.
Risk of electric shock
– do not open the product.
•
The electrical installation of the system does
not require the product to be opened or
disassembled.
Risk of electric shock
– capacitor stores hazardous
energy.
•
Wait 10 minutes after disconnecting all
electrical power supplies prior to removing
cables and/or servicing to ensure that internal
product capacitors are discharged.
This product uses common mode capacitors between
the high-voltage DC bus and the chassis. Some
apparatuses can cause dangerous frame current to
pass through these capacitors if they are connected
to a high-voltage DC bus.
•
Always measure the voltage between the
high-voltage DC bus and the chassis using
appropriate protection and insulation before
manipulating the product.
This product uses differential mode capacitors
between the positive high-voltage DC bus (+) and the
negative high-voltage DC bus (-). Even when the
product is disconnected from the high-voltage source,
these capacitors can hold a voltage high enough to
cause an electric discharge or death.
•
Always measure the voltage between the
positive high-voltage DC bus (+) and the
negative high-voltage DC bus (-) using
appropriate protection and insulation before
manipulating the product.
Operations
1. Make sure to read and acknowledge the
previous safety instruction before starting
the following steps.
2. Disable the high-voltage and auxiliary
batteries before disconnecting any cable,
harness or hose.
3. Wait 10 minutes after disconnecting all
electrical power supplies prior to removing
cables and/or servicing to ensure that
internal product capacitors are discharged.
4. Note the cables and connectors position for
future installation.
5. Remove the coolant connection from the
MCU. Use appropriate precautions.
6. Remove the DC connector of the high-
voltage battery input of the MCU with
precaution.
7. Remove the AC phases connector or
connections of the MCU.
8. Remove the motor sensor connector from
the MCU communication connector with
precaution.
9. Remove the grounding strap with
precaution.
WARNING