dSPACE DS1103 - Page 46

The DC–DC converter built into the AutoBox/Tandem-AutoBox lets
you operate a dSPACE system connected to a car battery. Due to the
high currents involved, special care must be taken when connecting
the AutoBox/Tandem-AutoBox power supply to the car. Wires with
high cross-section (6 mm
2
minimum) are mandatory to avoid poor
performance of the power supply and excessive heating of the wires.
WA R NI NG
Hazardous voltages
Risk of electric shock
Even a brief disconnection of the battery while the engine
is running results in a load dump of the car generator
producing voltages of more than 100 V.
n Turn off the engine while connecting or disconnecting
the car battery.
N O T I C E
Only valid for AutoBox up to Version 3.0 and
Tandem-AutoBox up to Version 4.0: Reverse polarity
destroys the AutoBox/Tandem-‑AutoBox power
supply even if the remote control input is turned off.
n Double check the supply voltage polarity of
AutoBox/Tandem-AutoBox.
Safety precautions
The wiring has to be performed according to the illustration below. If
you use Tandem-AutoBox up to Version 4.0, both power supplies
must be connected.
Wiring diagram
Car battery
(+) red wire to pin A2
Melting fuse
(close to battery)
+
–
AutoBox
Remote to pin 4
(-) unmarked wire to pin A1
Car chassis
s
Installing the Hardware
t
46
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DS1103 Hardware Installation and Configuration November 2014