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Victron Lynx Smart BMS 500 Manual

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4. Communication and interfacing
4.1. The VictronConnect App
The VictronConnect App communicates via Bluetooth. It is used for changing settings, monitoring the Lynx Smart BMS and up to
4 connected Lynx Distributors. For more information on the VictronConnect App see the VictronConnect manual.
4.2. GX Device and the VRM Portal
The Lynx Smart BMS can be connected to a GX device via VE.Can and the GX device in its turn can communicate with the VRM
portal. The GX device and the VRM will show all measured parameters, operational state, battery SoC and alarms.
4.3. Communication Lynx Distributor
Up to 4 Lynx Distributors can be connected to a Lynx Smart BMS. They communicate via the RJ11 cable. The Lynx Distributors
communicate fuse status and operational status to the Lynx Smart BMS. The Lynx Smart BMS can be used to read out the Lynx
Distributors, generate alarms in case a fuse is blown or communication is lost.
4.4. DVCC
DVCC allows the Lynx Smart BMS to control Victron Energy inverter/chargers, AC chargers and solar chargers via a GX device.
The Lynx Smart BMS will automatically adjust discharge current, charge current and charge voltage depending on the battery
state. For the action taken for each battery state, see below table.
DVCC is automatically activated. The following parameters are implemented:
Fixed parameters:
• Absorption voltage is set at 14.2V
• Storage/float voltage is set at 13.5V
• Max charge current is set at 1C
• Charge current at low cell voltage is set at 0.1C
User configurable via the VictronConnect app:
• Absorption time
• State of charge (SoC) threshold (A new charge cycle will be initiated as soon and the the battery state of charge drops below
this threshold)
• Repeated absorption time (The number of days after which a new charge cycle is initiated, even though the battery state of
charge is still above the state of charge threshold)
For more information on DVCC and to find out which Victron Energy products can be controlled via DVCC, see the GX device
manual.
Table 1. DVCC action taken when certain battery conditions occur
Battery condition Allowed to
discharge
signal
Allowed
to charge
signal
DVCC action
A battery cell voltage is below
5°C.
This is a low temperature alarm.
High Low The charge current is reduced by lowering the charge
voltage to battery voltage minus 0.15V. This will
reduce the charge current to 0A.
The battery is signalling a low
voltage pre-alarm.
High High This is user selectable. Can be set to reduce the
discharge current to 0A, or to take no action.
A battery cell voltage is too low.
This is a under-voltage alarm
Low High The discharge current is reduced to 0A. Once the
under-voltage alarm is cleared it will be set back to
600A.
The charge voltage is reduced until the charge current
is 0.1C. Once the under-voltage alarm is cleared the
charge voltage will go back to 14.2V (28.4V).
Lynx Smart BMS
Page 7 Communication and interfacing
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