PWRS-0026 User Manual
Page 16 of 19
VII. PCI Driver Operation
A Windows NT driver is provided to manage all UPS functions. After
installation, the driver will run as a back ground service, and provides
access to all set up parameters through the Control Panel icon. Select
and fill in any parameters which need to be modified from default. All
communication between the processor and UPS is through the PCI bus.
Default for UPS Time is 120,000 ms.
Default for Fail Time is 1,000 ms.
Logic:
On power up, the UPS driver task starts automatically. Assuming that the
UPS driver is installed and activated through the Control Panel utility, the
UPS is enabled and begins charging. CHRG/COMP will be orange. Upon
being fully charged, CHRG/COMP will turn green.
The system continuously checks for a power failure, indicated by the
PWR FAIL LED. A voltage loss for less than Fail Time will have no effect
on the system. A voltage loss for Fail Time or greater will result in System
Shutdown with battery backup assistance.
All programs will be shut down, and the Registry will be saved. The UPS
will monitor this activity, and upon completion will turn off the System.
If for any reason this does not happen (ie. operating system locks up), the
UPS will turn off the System after a time period of UPS_TIME.
Upon a User selected Shutdown of NT, all battery backup functionality is
disabled.
