Nuvo-3100 Series User’s Manual
Copyright © 2014 Neousys Technology Inc. All Right Reserved.
Page 65 of 99
In addition to the typical timing correlation, the ignition power control module offers some
further features to make Nuvo-3100VTC more reliable for in-vehicle applications.
1. Low battery detection
The ignition power control module is capable to continuously monitor the voltage of DC
input when system is running. If input voltage is less than 9V (for 12VDC input) or less
than 18V (for 24VDC input) over a 60 seconds duration, it will shut down the
system automatically.
2. Guarded power-on/power-off delay duration
If ignition signal goes inactive during the power-on delay duration, the ignition power
control module will cancel the power-on delay process and go back to idle status.
Likewise if ignition signal goes active during the power-off delay duration, the ignition
power control module will cancel the power-off delay process and keep the system
running.
3. System hard-off
In some cases, system may be failed to normally shutdown via a soft-off operation due
to system/application halts. The ignition power control module on Nuvo-3100VTC offers
a mechanism called “hard-off” to handle this unexpected condition. By detecting the
system status, it can determine whether the system is normally shutdown. If not, the
ignition power control module will compulsively cut off the system power 10 minutes
after the power-off delay duration.
4. Smart off-delay
The ignition power control module on Nuvo-3100VTC offers two modes (mode 6 &
mode 7) which have very long power-off delay duration for applications require some
off-line processing after vehicle is stopped. In these two modes, the ignition power
control module will automatically detect the system status during the power-off delay
duration. If the system is shutdown (by the application software) in prior to power-off
delay expired, it will cut off the system power immediately to prevent further
consumption of battery power.
3.7.2 Wiring Ignition Signal
To have ignition power control for in-vehicle usage, you need to supply IGN signal to
Nuvo-3100VTC. The IGN input is located on the back panel via a 3-pin pluggable terminal