Sol-Ark Integration Guide

Rev 2.0 08-28-21
Fortress Power - Sol-Ark Inverter Guide
505 Keystone Rd, Southampton, PA 18966 . [phone]. [e-mail] . Fortresspower.com
7
Steps 10 - Verification:
Confirm all batteries are “working” before leaving site by confirming amperage is flowing in or out of
each battery. If the battery is showing 0 amps while other batteries are working, then that battery has
not been commissioned correctly.
eFlex + Instructions
On eFlex batteries, apply a charge current and
confirm the state-of-charge light is blinking on
each battery or
confirm using
the Fortress
firmware
update tool.
eVault MAX / Classic Instructions
Touch the LCD screen to see that amperage is
flowing in or out of each eVault. If either eVault
is not turning on, switch the master-slave roles
on the eVaults in the communication circuit and
power cycle the batteries.
Step 10 – Calibrating the State of Charge Controller (optional):
Note: This step can be performed after installation remotely by changing settings within Powerview if
necessary. It can be performed during commissioning if time allows but is not usually necessary to do so.
Calibrating the SoC controller should occur
automatically, but can be forced manually
by charging to 56V. Disable BMS control
and putting the inverter in “voltage based
control”.
The inverter should already programmed to
float/absorb at 56V. Let the batteries
operate like this on a sunny day to bring
the batteries gently to 56V via float charge.
This will recalibrate the SoC controller.
Then return the battery settings to BMS
04 % charged control.
eFlex-specific instructions: Useful if an eFlex is not showing four “state of charge lights” when charged
full or if only reaching a 99% during normal operation.
eVault-specific instructions: Useful if eVault shows 100% when voltage is less than 54V.
A blinking State of Charge
Indicator Light confirms that the
eFlex is charging.
✓
✓
✓