PSW-H Installation and User Manual

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29
Low voltage disconnect
The AC output is turned off
when the battery reaches this
voltage level to protect the
battery from deep discharge.
The low DC / battery warning
voltage is 2 Vdc for the 48 V
model and 1 Vdc for the 24 V
model above this setting.
Note: It is necessary for each
unit to have a PV array or AC
source connected to wake up
after a low voltage disconnect
event.
44.0 Vdc (48 Vdc model Default)
22.0 Vdc (24 Vdc model Default)
If “User-defined” is selected in
settings menu 05, this value can be
changed.
Available values: 37.5 ~ 54.0 Vdc in
0.1 Vdc increments for 48 Vdc
model.
Available values: 18.8 ~ 27.0 Vdc in
0.1 Vdc increments for 24 Vdc
model.
This voltage is fixed and
independent of the load power
level.
30
Low voltage reconnect
If the AC output is turned off
due to low voltage disconnect
(settings menu 29), the AC
output is automatically turned
back on once this voltage is
reached. This value must be at
most 0.5 Vdc below settings
menu 27, and at least 4 Vdc for
the 48 V model or 2 Vdc for
the 24 V model higher than
settings menu 29.
Note: It is necessary for each
unit to have a PV array or AC
source connected for low
voltage reconnect to function.
54.7 Vdc (48 Vdc model Default)
27.1 Vdc (24 Vdc model Default)
If “User-defined” is selected in
settings menu 05, this value can be
changed.
Available values: 41.6 ~ 63.5 Vdc in
0.1 Vdc increments for 48 Vdc
model.
Available values: 20.9 ~ 31.5 Vdc in
0.1 Vdc increments for 24 Vdc
model.
32
Boost battery charging
duration
The duration for which the
boost voltage from settings
menu 26 is held before the
Floating phase is reached.
Automatic
120 min (Default)
If “User-defined” is selected in settings menu 05, this value can be
changed. Available values: “Automatic” and 5 ~ 900 minutes in 5 min.
increments.
If “Automatic” is set, the duration of bulk phase (see chapter
“Specifications” → “Battery Charging”) is multiplied by 10, with a
minimum of 10 minutes and maximum of 8 hours.
33
Battery equalization
Battery equalization helps
prevent sulfation of lead-acid
batteries and is beneficial for
bringing all cells to the same
voltage. Consult your battery
manual to make sure the
battery can withstand the
higher voltages required for
this purpose. This is typically
the case for flooded lead-acid
batteries.
Enabled
Disabled (Default)
If “User-defined” or “Flooded” is selected in settings menu 05, this value
can be changed.