April 22
nd
, 2022 16
Integrating a Generator
Generators < 10kW (GEN Breaker)— See Diagram 1-2
A.
ONLY supports 240V generators | 50A breaker
B.
Connect the generator output to the “GEN” input breaker in the Sol-
Ark L12K-Tr user area
C.
THD of less than 15% preferred but not required
Standby Generators > 10kW (GRID Breaker)— See
Diagram 1
(OFF-GRID)
A.
Supports 240V generators
B.
Off-Grid
/ Whole-home Generator on ATS installations require selecting
“GEN Connected to Grid Input”
Home Screen → Gear Icon → Grid Setup → Sell Control
GEN
Connected to Grid Input
C.
Off-Grid = turn “Grid Sell” off
Gen Start V or %
Value batts need to reach
BEFORE
automatically starting a generator connected
to the GEN breaker to charge the battery bank.
Sol-Ark will NOT charge batteries from a generator until the batteries
reach this value.
Gen Start A
This is how many amps (
DC
) you can pull specifically from the Generator (GEN
breaker only) to charge the batts. To ensure you do not overload a small
Generator, you will want to adjust the GEN charge value.
Multiply value by # of
Sol-Arks for actual current value into batteries.
Increase Gen/Sol-Ark efficiency
1. Select “Limited to Load” 2. Select “General Standard”
3. Increase Grid frequency range: 55-65H
Suppose PV production = 0W | Disabled TOU | Enabled Grid/Gen Charge: the batteries will be
charged to "full" using the Grid or a Generator (if available) until the battery bank accepts only
5% of its rated capacity in Amperes. This value correlates to roughly 90-93% full for most
batteries and is the generator's default "OFF" signal. If producing PV, the system will use PV to
charge the batteries to 100% full instead.
Weekly Gen Exercise
If the Sol-Ark is up to date with MCU
version xx73 or newer, and your
generator has two-wire start
compatibility, you will experience
weekly generator tests.
These tests occur at 8AM (local time)
every Monday by default.
The test takes approximately 20
minutes to complete. During that
time, the generator will auto-start
and auto-stop.
The generator will not provide
power during this test. The
generator may charge the batteries
if the batteries reach designated
generator start point, however.
Summary of Contents for L12K-Tr
Page 5: ...April 22nd 2022 5 Spec Sheet 5 ...
Page 9: ...April 22nd 2022 9 Sol Ark L12K Tr x3 Standard Wiring Diagram 120 240V ...
Page 10: ...April 22nd 2022 10 This page is left blank on purpose ...
Page 11: ...April 22nd 2022 11 GUI Screens Main Menus Basic Setup ...
Page 12: ...April 22nd 2022 12 c Battery Setup Grid Setup ...