Software Release Notes
975-0604-01-01 Revision A 7
3. Implemented new charge algorithm. The differences from the previous
implementation are:
a) Bulk exiting voltage is Vabs, and exiting timer is 1s (range 1s-1hr, can be
set via XDT). Absorption begins with a 1-hr boost stage where battery
voltage is regulated at Vbulk. Boost stage applies only to the custom
battery type.
b) Absorption exiting current is battery Ahr/50.
c) The battery capacity affects the charging current calculation in a way that
small battery capacity (less than 100Ahr on Xantrex XW6048) will limit the
charging current to the capacity level.
d) 0Ahr battery capacity is deemed that there is no absorption exit current
criteria and absorption only exit when absorption timer (default 3hrs,
range 1min-8hr) expires. Setting the battery capacity to zero will reset the
charging current to its default values.
e) Vbulk and Vabs settings are now totally independent from each other on
SCP.
f) Minimum charge percentage is now 5%.
g) Xantrex XW only waits for other Xantrex XW units to finish absorption
before exiting the absorption stage itself. It will not wait for any other types
of devices, but to exit absorption on its own.
4. The minimum load level to report on all AC ports now is 25W.
5. Implemented the "GEN SUPP PLUS" feature for the split-phase models. This
feature can be enabled via SCP. It is disabled by default. This feature allows
the neutral relay to be closed immediately upon detecting an AC over voltage
(above 300V L1-L2). This is an attempt to balance L1-N and L2-N voltage to
protect the loads when AC inputs disconnect suddenly while the unit was
powering an unbalanced load. This feature helps with generators that are less
than 5kW.
6. Changes made to read input AC current:
• Split-phase models: reading the current from the primary side.
• Single-phase models: reading L1-N current.
7. Changed the fault-set hysteresis to 0V for F48 (DC under voltage fault) to
prevent premature fault triggering. Also changed default fault level to 46V/23V,
and recovery hysteresis to 4V/2V.
8. In order to prevent passive charging, added protection to not qualify AC if DC
voltage is below 40V for 48V system or 20V for 24V system.
9. Added protection to put unit into sleep mode if the DC voltage is below V-
LBCO for more than 24hrs to prevent draining the batteries.
10. Changed the battery over temperature fault level from 70°C to 60°C.
11. Corrected "qual" cmd to display the correct GEN-L1L2 voltage.
12. Changed low battery upper limit from 26V/52V to 29V/58V on AUX output port
to give customer more flexibility.
13. Added soft start for the equalization charge stage.
14. Rebranding from Xantrex to Schneider Electric format.
15. Changed "FREQ" cmd so that it now accepts decimal frequency settings such
as "55.15Hz".
(166 paginas)
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