Schneider Electric XW-MPPT-60 User Manual

Operation
4–14 975-0400-01-01 Revision H
This manual is for use by qualified personnel only.
Daily Logs
To view the daily logs stored in memory, press Enter from the Daily Logs screen,
then press the down arrow button to view each log, starting with the most recent.
On the log screen, the current day is “Today–00,” yesterday is “Today–01,” and
so on. See Figure 4-4.
The solar charge controller stores up to 30 daily logs. After 30 days, the oldest
daily log is overwritten with the newest log.
After logging 30 daily logs, the solar charge controller totals the collected data
and creates a new monthly log.
Monthly Logs
To view the monthly logs stored in memory, press Enter from the Monthly Logs
screen, then press the down arrow button to view each log, starting with the
current month. On the log screen, the current month is “Month–00,” the previous
month is “Month–01,” and so on. See Figure 4-4.
Monthly logs consist of the total data from the previous 30 daily logs. To the solar
charge controller, a “month” is a 30-day period, and does not match the months
of the calendar.
The solar charge controller stores up to 12 monthly logs. After 12 months the
oldest monthly log is overwritten with the newest log.
Battery Equalization
Equalization charging is the process of deliberately charging a battery (or battery
bank) at a high voltage for a set period of time. Equalize charging remixes the
electrolyte, helps to remove sulfate buildup on the battery plates, and balances
the charge of individual cells.
Be sure to read all cautions and warnings regarding equalization charging
batteries before allowing an equalization charge to occur.
Important: The solar charge controller maximum output voltage is limited to 72 V
for a 60 V battery system, and so is unable to equalize a 60 V battery system.
Important: In a system where more than one device is capable of equalizing
batteries (such as a system including multiple solar charge controllers and XW
Inverter/Chargers), there is no system-wide equalization command for all
devices. To equalize with multiple devices, each would have to be enabled
individually. Alternatively, equalization can be performed using only one device.
During the equalization process, one device applies the equalization charge
while the other devices continue to operate in synchronized charge mode,
typically in float (three-stage charging) or no-float (two-stage charging).
975-0400-01-01_Rev-H(XW-MPPT60-150).book Page 14 Thursday, November 23, 2017 11:48 AM