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Victron Lynx Smart BMS 500 Manual

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Standby switch via the VictronConenct app
This is a "soft" remote switch and is accessible via the VictronConnect app.
When the Lynx Smart BMS has been switched to standby mode, the contactor will be opened and the DC system will be
disconnected. Bluetooth, VE.Can and the AUX port will remain active.
Pre-alarm
When the cell voltage drops and reaches the pre alarm threshold the alarm relay will activate. This will give an advanced warning
of an impending empty battery and before the loads are disabled. Pre-alarm is indicated by the red LED flashing 3 times every 4
seconds
Do not discharge
If the cell voltage becomes too low and if it has reached the low cell voltage threshold, the ATD contact (allowed to discharge) will
turn off all loads. If the Lynx Smart BMS is connected to a GX device and DVCC is enabled, the inverters of the devices that are
connected to the same GX device will be turned off as well.
BMS do not charge
If the cell voltage becomes too high and has reached the high cell voltage threshold, or if the low temperature threshold has been
reached, the ATC contact (allowed to charge) will turn of all chargers. If the Lynx Smart BMS is connected to a GX device and
DVCC is enabled, the chargers of the devices that are connected to the same GX device will be turned off as well.
BMS contactor operation
If the batteries are even further discharged or overcharged the Lynx Smart BMS will physically disconnect DC system from the
batteries via the contactor. This to safeguard the batteries against total discharge or extreme overcharge. The contactor will also
open if the ATC or the ATD signal have not worked and the Lynx Smart BMS has detected that current is still flowing into or out of
the battery.
The contactor will re-engage after a low voltage event as soon as a suitable charge voltage is measured on the Lynx Smart BMS
output (the system side).
The contactor will re-engage after high voltage event as soon as the cell voltage has dropped.
8.3. 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.
8.4. Battery care
Once the Lynx Smart BMS is in operation it is important to take care of the batteries.
These are the basic guidelines:
• Prevent total battery discharge at all times.
• Familiarize yourself with the pre-alarm feature and act when pre-alarm is active to prevent a DC system shutdown.
• If the pre-alarm is active, or if the BMS has disabled the loads, make sure that the batteries are recharged as soon as possible.
• Minimise the time the batteries spend in a far 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.
8.5. LED indications alarms and errors
LEDs
The Lynx Smart BMS is equipped with two LEDS, the “Bluetooth” LED and the “Status” LED. These LEDS will indicate the
operation mode and the fault mode in case there is a fault.
Bluetooth LED Description
Off No system power
Blue on A Bluetooth device is connected to the Lynx Smart BMS
Blue flashing Bluetooth is active but no devices are connected
Blue flashing at 3 seconds interval The Lynx Smart BMS is in hibernation mode but is still accessible over Bluetooth
Lynx Smart BMS
Page 22 Operation Lynx Smart BMS
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