Advantech-DLoG DLT-V83 Series - Functional Description; Sequence

Automatic shut down
Advantech-DLoG DLT-V83 Series Manual V1.31 Page 129 of 178
12.1. Functional description
The DLT-V83 is equipped with an automatic shut downmodule.
If wired up accordingly, the DLT-V83 conveniently switches off together with the
vehicle’s ignition (ATTENTION: Ignition signal with DC devices only). As 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 software installed on the
system when the ignition is switched off.
The DLT-V83 is connected to the vehicle with three supply cables. DC+ and DC- are
directly connected to the power supply of the vehicle, the connection is of course run
through fuses. The supply voltage connected is then linked to the DLT-V83’s ignition
input via a switch, for example, the key switch of the ignition (also with a fuse).
For more information about the electrical installation, see chapter 7 Mounting
(mechanical and electrical).
12.2. Sequence
When the vehicle ignition is turned on or the DLT-V83 <Power> button is pressed, the
DLT-V83 checks its internal temperature and runs a test to confirm that the automatic
shut down function is working.
If this check of the environmental conditions is successful, the DLT-V83 starts the
operating system normally.
Once these checks have been successfully completed, the DLT-V83 starts the
operating system. No environmental conditions (e.g. the internal temperature of the
device or the state of the ignition input) are checked for three minutes during startup.
After three minutes, the DLT-V83’s internal temperature and the state of the ignition
input are constantly monitored.
If the DLT-V83’s internal temperature reaches a critical level, a controlled shutdown of
the operating system is carried out. The computer will remain switched off until the
temperature is once again within the permitted range.
If the ignition input is grounded or isolated during normal operation of the DLT-V83, the
device will switch to a delayed shut-off state.
The device will continue to operate normally in this state until the shut-off delay (e.g. 15
minutes) has elapsed.
If the ignition is turned on again during this shut-off delay, the DLT-V83 will revert to a
normal operational state.
Once the shut-off delay (afterrun time) has elapsed, the operating system will shut
down and the device will automatically shut down (e.g. after three minutes or a signal
from the operating system).