User manual

Chapter 4: 8580/8590 Installation
Power Supply
8580/8590 Vehicle-Mount Computer User Manual 45
4.3 Power Supply
An integrated, electrically isolated DC power supply is available for the 8580/8590.
The power pack is designed to fulfill the requirements for the full range of operating temper-
atures of a 8580/8590 with standard extension modules.
In a system with a 800 MHz CPU, 512 MB RAM, HDD, a 10" display and an external key-
board, this leaves approximately 20W for plug-in cards and external devices.
4.3.1 DC Power Pack
Three different DC power packs, each fully integrated and electrically isolated, are available
for the 8580/8590:
DC power packs with 18 to 60VDC input voltage, maximum output 60 W
DC power pack with 18 to 60VDC input voltage, maximum output 100 W
DC power pack with 9 to 16VDC input voltage, maximum output 100 W
The heating option requires a 100 W power pack.
Power is connected to the underside of the unit using a Phoenix Contact plug. There is no
power switch.
* The SELV circuit is a secondary circuit that is designed and protected so that its voltages
will not exceed a safe value both when operating correctly or if a single error occurs.
Important: In DC applications the 8580/8590 must only be connected to a SELV
(Safety Extra Low Voltage) circuit.*)
Ensure that there is a suitable disconnecting device such as a power switch
or circuit breaker in the power supply circuit. Ensure that the disconnect-
ing device isolates all supply voltage lines. See Appendix B: Pin
configuration.
The DC+/- connecting cables must be protected by a fuse (30AT
maximum).
The ignition connecting cables must be protected by a fuse of the following
type: 5x20mm T 125mA L/250V, for example, a Wickmann 195-
125mA/250V.