User manual

Chapter 4: 8580/8590 Installation
Vehicle Applications (such as Forklifts)
8580/8590 Vehicle-Mount Computer User Manual 47
Warning: Carefully read the following warnings!
• Never connect a 12 VDC device to a 24/48 VDC vehicle! The device model is
identified on the device type plate, and a warning sticker is affixed to the unit
and on the external connector strip.
• Some vehicles have a chassis that is connected to DC+; therefore, the
8580/8590 chassis is also connected to DC+. If you use peripheral devices
that are not isolated, short circuits can occur. This will inevitably lead to mal-
functions or even a total system failure.
• Most electrically driven forklift vehicles have a floating chassis, connected
to neither DC+ or DC-. However, electrical faults can cause the battery + or -
to be connected to the chassis via low resistance paths. All connected periph-
erals must be completely isolated.
• Refer to “8580/8590 Adaptor Cables” on page 25 and Figure 2.5 on page 26
for a description of the 8580/8590 adapter cables (PN 1616302-001 &
1616303-001). When routing the adaptor cable, ensure that the power cable
and the chassis ground cable are routed through separate cable ducts in the
rear cover panel.
• Always ensure that the external wire of the power adapter cable is connected
to the ground lug of the terminal connector bay and to the vehicle chassis.
Make sure that the 8580/8590 connecting cable is attached as close to the
battery as possible. Connecting the vehicle-mount to large electrical loads,
such as converters for the forklift motor may result in random restarts, mal-
functions and/or irreparable damage to the device.
If you want to connect devices fed by other power sources to the 8580/8590,
such as certain PS/2-Wedges, printers and so on, be sure to power up the
peripheral devices at the same time or after the vehicle-mount. Otherwise,
you may encounter start-up problems, malfunctions or even irreparable
damage to the device.
Grounding Lug