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Mode
Soft switch VictronConnect app
OFF
Yes
* Only possible from Standby mode
How to manually switch device modes
7.4. Lynx Smart BMS trigger
This section describes the behavior of the Lynx Smart BMS in case the pre-alarm threshold is reached or either a low or high cell
voltage or low temperature event is triggered.
The limits for the pre-alarm threshold, low cell voltage and low temperature are set in the battery.
Pre-alarm
If a cell voltage drops and reaches the pre-alarm threshold, the programmable relay will activate, if configured to Alarm relay
mode. This will give an advanced warning of an impending low cell voltage and before the loads are disabled. Pre-alarm is
indicated by the red LED flashing 3 times every 4 seconds. The Lynx Smart BMS ensures a minimum delay of 30 seconds
between enabling the pre-alarm and switching off the loads.
Low cell voltage cut off
If the cell voltage gets too low and has reached the low cell voltage threshold, the ATD contact opens and turns off all loads. If the
Lynx Smart BMS is connected to a GX device, DVCC compatible inverters connected to the same GX device are also turned off.
Low temperature or high cell voltage cut off
If a cell voltage becomes too high and has reached the high cell voltage threshold (3.75V hard coded in battery), or if the low
temperature threshold (adjustable in battery) has been reached, the ATC contact opens and will turn off all chargers. If the Lynx
Smart BMS is connected to a GX device, DVCC compatible chargers that are connected to the same GX device will be turned off
as well.
7.5. Battery monitor operation
The Lynx Smart BMS has a built-in battery monitor. It measures battery voltage and current. Based on these measurements
it calculates state of charge, time to go and keeps track of historical data, such as deepest discharge, average discharge and
number of cycles.
7.6. Battery care
Once the Lynx Smart BMS is in operation, it is important to take care of the batteries.
These are the basic guidelines:
• Avoid total discharge of the battery at all times and use the discharge floor setting to prevent this.
• Familiarize yourself with the pre-alarm feature and act when pre-alarm is active to prevent a DC system shutdown.
• Charge your batteries as soon as possible when the pre-alarm is active or the BMS has deactivated loads.
• Minimize the time the batteries spend in a deeply discharged state as much as possible.
• The batteries need to spend at least 2 hours in absorption charge mode each month to ensure sufficient time in
balancing mode.
• When leaving the system unattended for some time, make sure to either keep the batteries charged during that time or make
sure the batteries are (almost) full and then disconnect the DC system from the battery. Do this by disconnecting the positive
battery pole.
Page 21
Lynx Smart BMS
Soft switch GX device
Hard wired Remote on/off switch
No
Yes
Commissioning and Operation of the
Lynx Smart BMS
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