OutBack Integration Guide
Table Of Contents
- Share Your OpticsRE online monitoring with Fortress Power
- Unpack batteries and check voltage
- 1. Unpack the batteries and turn each battery on by itself.
- 2. Note the voltage of each battery and serial number. The serial numbers are useful during warranty submittal.
- 3. The batteries must be within +/-0.5V of each other before commissioning. Groups of 4 batteries or more may require a narrower voltage range to commission properly.
- 4. Turn off the batteries and install them in parallel. Notes
- If the battery voltages are significantly different, one technique is to finish battery installation and only turn on the lowest voltage battery using the pushbutton. Charge the battery, and when the charging voltage is ~0.2V above the resting voltage...
- If the batteries are slightly more than +/-0.5V from each other, turning on the highest voltage batteries only will reduce their voltages, and turning on the lowest voltage batteries only will lower the highest voltage. Likewise, turning on the lowest...
- Use of the Fortress firmware update tool can help speed up commissioning times. Fortress installers should request a firmware update tool by filling out a support ticket at https://support.fortresspower.com
- Radian / FXR / VFXR Inverter Settings
- Skybox Settings
- FM60/80/100 Charge Controller Settings
- FlexNET DC Settings
- Calibrating Outback Systems
High Battery Cut-in
Voltage
55.2V
SellRE (Offset)
Voltage Max
51.6V for “zero-outflow”, 53.6V for selling at “100% full”
Temp Sensors
Do not use temperature sensors / reduce any temperature
coefficients to as close to zero as allowed
*divide voltage by 2 for 24V FXR settings
Skybox Settings
The settings below should be programmed into the unit under the Custom choice.
Inverter
Maximum SOC
100%
Minimum SOC
20%
Absorb Charge
Timed
Absorb Voltage
55.2 Vdc
Absorb Time
02:00 hr
Float Charge
Disabled
Float Voltage
Can be left at default
Float Time
Can be left at default
Re-float Voltage
54.4 Vdc
Re-bulk Voltage
52.5 Vdc
Equalize Voltage
54.4 Vdc
Minimum Equalize Time
00:00
Max Charge Current (Adc)
LFP-5 & LFP-10: 50Adc
eVault: 100Adc
eFlex: 60Adc
Max Discharge Current (Adc)
LFP-5 & LFP-10: 90Adc
eVault: 125Adc
eFlex: 60Adc
Grid Charge Limit (kW)
Site specific
Low Battery Cutout
50 Vdc
LBCO Delay
130 seconds
Low Battery Restart
51.2 Vdc
High Battery Cutout
56.0 Vdc








