http://www.xantrex.com
Freedom e-GEN System User Guide
975-0791-01-01 Rev F
Sep 2019
Copyright © 2019 Xantrex LLC. All Rights Reserved.
All trademarks are owned by Xantrex LLC and its affiliates.
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11
BMS LED Indicator
The e-GEN Xantrex BMS has an LED indicator integrated into the Power button on the unit
itself. In some cases, there are also optional remote LED indicators – one to indicate power
(On/Off/Alarm) status and one to indicate low battery status. Please refer to your specific
installation to check which LEDs, if any, you have available in your system.
Power On/Off/Alarm
– This LED indicator is integrated into the Power button on
the BMS unit or is installed remotely as an option.
l
The LED is off when the BMS is turned off and battery power is disabled.
l
The LED is on when the BMS is on and battery power is enabled.
l
The LED flashes rapidly when BMS is in alarm state and battery power is
disabled.
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Power and Environmental Specifications
NOTE
: Specifications are subject to change without prior notice.
The specifications listed here are for the Freedom e-GEN System. Certain operating
conditions apply. For complete specifications, refer to each device’s datasheet and
Owner’s Guide.
Electrical
Overview
Energy Storage Capacity
600 Ah or 450 Ah
Nominal System DC Voltage
12.8VDC
Nominal System AC Voltage
120VAC @60Hz
System AC Output Power Rating
3000W up to 40 °C (104 °F)
Lithium-ion
Battery
Voltage
versus SoC
Battery State
Battery Voltage
State-of-Charge (SoC)
Fully Charged
14.6V – 13.6V
100%
Nominal Operation
14.6V – 12.2V
100% – 12%
Float Voltage
13.4V
100% – 80%
Low Battery Warning
12.2V
12%
Reserve Shutdown
12.0V
10%
Low Battery Shutdown
11.6V
<3%
Temperature
Charging range*
0 – 45 °C (32 – 113 °F)
Discharging range*
-20 – 55 °C (-4 – 131 °F)
* Staying within the recommended ambient temperature range will yield optimal system performance. For maximum
temperature specifications, refer to each device's datasheet and Owner's Guide.
Storage
Recommended temperature and
humidity
15 to 35°C (59 to 95°F)
，
45 to 75
％
RH
Temperature range
< 1 Month, -20 to 35°C (-4 to 95°F)
< 3 Months, -10 to 30°C (14 to 86°F)
For long term storage, see the
Battery
Storage Guide (doc number 975-1005-01-
01)
.
Battery
Disposal
At the end of the battery’s useful life, proper disposal is required. Do not dispose the battery
with ordinary household waste. Refer to your local codes for proper disposal of lithium-ion
batteries.
Full Vlt
Full Voltage
Set this to the maximum per-cell voltage your battery reaches at the end-
of-charge. This will be used to synchronize the SoC LCD Display’s
100% reading when the battery reaches this voltage level.
Typically, this value is 3.55 V per cell. So, a 12 V (4 cell) battery is 4 x
3.55 = 14.2 V. When the battery reaches this voltage at the end of a
charge cycle, the SoC value will reset to 100%.
NOTE
: If you notice that your SoC LCD Display's value never reaches 100% at the
end of a charge cycle, you may need to slightly lower the Full Vlt value to what the
voltage reading is on the LCD Display at the moment, when the charger turns off.
This value must be higher than the resting voltage of the battery since the charger’s
end voltage is higher than its resting voltage. The typical value range should be
between 14.0 and 14.4 V.
Min SoC
Minimal State-of-
Charge
This percentage value sets the Empty Battery level, also known as
Reserve Capacity, so the user can utilize the BAT Gauge reading and
not completely deplete the battery thus, preserving its lifecycles. For
example, if this value is set to 10%, then the BAT Gauge will report 0%
when there is still 10% reserve SoC. If you desire to use your battery to
its full capacity and/or want the BAT Gauge to reflect true SoC, then set
this value to zero.
In addition, when RVC Mode is enabled, the BMS will turn off battery
power when SoC reaches this preset level (assuming it comes before
battery voltage reaches RVC level), typically 3.00VPC. This allows the
Xantrex Reserve feature to act on both voltage trigger and SoC level
trigger, whichever comes first.
AGSR Lvl
Automatic
Generator
Start/Restart level
This percentage value determines the minimal Bat Gauge level at which
the AGS/R circuit is triggered. AGS/R circuit triggers on voltage set to
3.05 V per cell, or the Low Bat level, whichever comes first, hence
allowing flexible control of the generator starting point.
Temp Unit
Temperature Units
Set this to Fahrenheit (°F) or Celsius (°C).
Charge Eff
Charging Efficiency
This percentage value slows down the rate of SoC climb during the
charge to compensate for battery losses during the discharge cycle. The
recommended setting is 98%. In applications with high discharge rates,
energy losses are more pronounced, so this value must be set lower to
accurately report SoC and BAT Gauge values during partial
charges.This setting must be tuned experimentally for best accuracy.
Ideal setting will cause SoC to reach 100% at approximately the same
time as the charger is finishing up the full charge.
Dead Zone
Due to thermal drift in Hall Effect sensors when temperature fluctuations
are wide and fast, the BMS might report non-zero current reading when
no current is present. The Dead Zone value allows ignoring small
current readings when they are likely false (such as, when small reading
fluctuates between zero and non-zero values). Default value of 0.3A is
recommended for best zero-point stability.
Idle Load
Shown as mA
This setting represents the constant idle load current powering the BMS
system. This can be measured with a digital multi-meter in DC
amperage mode in series with the BMS’s negative reference wire.
Allowed range is 0 – 200 mA. Since the idle current is usually too low to
register by internal hall-effect sensor but still affects SoC reading over
long time periods when the battery sits idle, setting this value allows for
a better long-term accuracy of the SoC counter.
Alarm
Alarm function
Turns ON or OFF an Alarm function, which drives the internal buzzer as
well as the AUXOUT2 external relay circuit when the BMS is in Alarm
state.
RVC
Reserve voltage
cutoff function
Default setting STD (Standard) would turn off the battery while leaving
reserve charge, which can be accessed by pressing the Reset button.
When set to EXT (Extended), the amount of reserve charge is increased
on voltage-based triggers.
