FENTONUPS(8)                Network UPS Tools (NUT)               FENTONUPS(8)


       fentonups  -  Driver  for  Fenton  Technologies  (Megatec protocol) UPS


       This man page only documents the hardware-specific features of the fen-
       tonups  driver.   For  information  about  the core driver, see nutups-


       fentonups primarily supports Fenton Technologies  models  such  as  the
       PowerPal,  PowerPure  and PowerOn lines.  Due to the common heritage of
       UPS equipment, it generally supports other hardware that also uses  the
       Megatec protocol.

       At  the  time  of  this  writing,  the  PowerGuard  PG-600 and PowerCom
       SMK-800A are recognized and supported.  Other Megatec units should also
       work,  but they will generate a warning since their battery information
       is not known.


       This  driver  supports  the  following   optional   settings   in   the

              Sets  a user-defined battery voltage under which the driver will
              consider that the UPS is on "low battery" condition when running
              on battery.  This allows initiating a system shutdown before the
              UPS signals a low battery status by itself, and  may  be  useful
              for  some UPSes that don’t have enough runtime left for properly
              shutting down the system when they start signaling a  "low  bat-
              tery" status.


       The  battery  percentage  is derived from the voltage data that the UPS
       returns, since the UPS doesn’t return that  value  directly.   On  some
       hardware, the charge will remain at 100% for a long time and then drops
       quickly shortly before the battery runs out.  You can confirm from  the
       battery.voltage  readings  that  this is a problem with the UPS and not
       this driver.

       Similarly, the float from the charger in some models forces the battery
       charge  percentage  back  up to 100% immedately after the UPS goes back
       on-line, so you can’t tell when it is really recharged.

       Dead/broken batteries can’t be reported reliably.  If  your  UPS  kills
       the  load  instantly  or  within seconds of starting the inverter, your
       batteries probably need to be replaced.  Recently, a pair of  3.5  hour
       outages  here  (thanks CPS!) finally killed my batteries.  You may have
       to run a manual test from the front panel before the "replace  battery"
       LED will light.


       Russell Kroll, Michel Bouissou


   The core driver:

   Internet resources:
       The NUT (Network UPS Tools) home page: http://www.networkupstools.org/

                                Tue May 03 2005                   FENTONUPS(8)

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