Trackcom Limited DPU-4500 ユーザーズマニュアル

with grommets where it passes through bulkheads or the frame of the vehicle.

3.16 Power cable

The power cable should connected to a permanent +12-volt or +24-volt supply,
earth and to an ignition line (either +12-volt or +24-volt). Please note that the
permanent positive supply does need to be a permanent supply. This needs to be
checked that it does not dip below 10.2V at the DPU when the vehicle ignition is
cranked. If the permanent voltage supply does drop briefly below 10.2V, for
instance during engine ignition, then the DPU will diagnose this as a brown out
and reboot it self. This will not damage the DPU or the vehicle, but will take up to
90 seconds to recover and continue to track. During that 90 seconds the unit will
not operate. After recovering the unit will return to its previous settings and all
previous logs will be available. When connecting to the vehicle’s power do NOT
interfere in any way with the ABS wiring (yellow) or any other safety critical wiring.

The DPU is fused internally and an external fuse is not required. If however an
external fuse is used, it is recommended that a 3-amp slow-blow fuse (or an
equivalent) and a water resistant fuse holder be used.

The wiring connections are as follows: (See figure 1.3)

a) Connect the RED wire from the power cable to a continuous +12 volt or +24
volt feed supply using the correct size crimp connector.

b) Connect the BLACK wire from the power cable to the vehicle chassis using the
correct size crimp connector.

c) Connect the GREEN wire from the power cable to a switched ignition +12 volt
or +24 volt feed supply

d) When fitting the door event wire, (optional extra) connect the PURPLE wire
from the power cable to the negative wire of the door switch (interior light).

Figure 1.3