Conext SW4048 4,000W 48V Installation

Grid-interactive and Other Features
975-0638-01-03 1–11
With its charger enabled, the Conext SW enters AC support mode only after
completing a charge cycle when it is first powered up or reconnected to the grid.
For regular AC support mode set the Conext SW’s battery charge cycle to
2StgNoFloat to allow AC Support feature to function immediately after the
absorption charge stage.
Grid-Interactive Delay Feature
Conext SW has a delay feature that postpones the engagement of two grid-
interactive features, namely load shaving and AC support, until a connected
MPPT solar charge controller has had a chance to charge the battery for two
hours in Float mode. The delay feature is called PLSDelay in SCP. The delay
feature prioritizes the MPPT solar charge controller’s ability to sufficiently charge
the battery bank. The feature works by inhibiting grid-interactive operation for two
hours from the time the charge controller transitions from Absorption to Float
charging. This allows the battery to be fully charged before either load shaving or
AC support mode is engaged. This feature is useful in applications where battery
micro-cycling is to be minimized in order to maximize battery life. See below.
Example: Load Shave = Enabled
LoadShaveStart = 10:00AM
PLSDelay = Enabled
Absorption to float charging starts at 7:00 AM and load shaving is set to start at
10:00 AM. Absorption transitions to float at 9:00 AM but because PLSDelay is
enabled, the 2-hour delay inhibits load shaving to actually start at 10:00 AM.
Because of the 2-hour delay, load shaving does not start until 11:00 AM. See
“Load Shaving 2-Hour Delay Example” on page 1–12.
Figure 1-6 Regular AC Support without Xanbus Devices
Conext SW
Battery
Bank
SCP
AC Loads
AC OUTAC IN
DC
Grid
NOTE: Entry and exit into AC Support Mode
is determined by the battery voltage. In this
case, AC support mode is engaged because
actual battery voltage is above the AC
support voltage level.
actual battery voltage = 25V
AC support voltage = 24V
15 A
< 2 A*
> 13 A
* To prevent injecting current into the grid from the inverter, there is less than 2 amps of offset allowed
from the grid to flow into AC IN under all conditions.