User manual

Chapter 8: Internal Devices
Automatic Switch-Off and Heating
120 8580/8590 Vehicle-Mount Computer User Manual
Adhesion
Test scale: 0B=100% delamination, 5B=no delamination
8.8 Automatic Switch-Off and Heating
8580/8590 models with DC voltage can be equipped with either an automatic shutdown
module or an automatic shutdown and heating module.
If the heating option is implemented, the 8580/8590 can be operated at temperatures ranging
from maximum -30º C to +50º C.
Modes Of Operation
If wired accordingly, the 8580/8590 conveniently switches off together with the vehicle’s ig-
nition. Because disconnecting the power supply during operation can lead to data loss, the
operating system needs to be shut down normally using the appropriate hardware and soft-
ware installed on the system when the ignition is switched off.
The 8580/8590 is connected to the vehicle with three supply cables. DC+ and DC- are di-
rectly connected to the power supply of the vehicle, the connection is run through fuses
(refer to “DC Power Pack” on page 45). Therefore make sure that the cables are connected
directly to the battery and not to high-interference supply lines (for example, motor supply)
or to supply lines already used by other consumers.
The supply voltage connected is then linked to the 8580/8590 ignition input via a switch, for
example, the key switch of the ignition (also with a fuse, see “Power Supply Fuses” on
page 17).
Heating is required if you want to operate the 8580/8590 at ambient temperatures below
0º C.
In the following two sections, the main functions of the automatic heating and shutdown
modules are described. For detailed information on the automatic shutdown and heating
modules - complete with pre-defined thresholds - refer to the program flowchart diagrams
(part 1 and 2) below.
Resources
The automatic switch-off/heating module requires the COM3 port for configuration. In
normal use the LPT1 port is used for communication.