11.5. DVCC features when using CAN-bus BMS battery
This chapter applies to all systems where an intelligent battery BMS is installed and connected via CAN-bus. Note that this does
not include the Victron VE.Bus BMS.
Such intelligent BMS sends the following parameters to the GX device:
1. Charge voltage limit (CVL): the maximum charge voltage that the battery currently accepts.
2. Charge current limit (CCL): the maximum charge current requested by the battery.
3. Discharge current limit (DCL): the maximum discharge current as requested by the battery.
For all three parameters, some types of batteries transmit dynamic values. For example they determine the maximum charge
voltage based on cell voltages, state of charge, or for example temperature. Other makes and brands use a fixed value.
For such batteries there is no need to wire allow to charge (ATC) and allow to discharge (ATD) connections to the AUX inputs of a
Multi or Quattro.
When inverting, i. e. in island mode, Multis and Quattros will shut down when the max discharge current is zero. They will
automatically start again as soon as either AC mains returns or when the BMS increases the max discharge current again.
See previous section Limit charge current [61], the user-configurable maximum charge current setting, for details about how the
Maximum charge current is used, how it prioritises solar and more.
All above means that setting up charge voltages or charge profiles in VEConfigure or VictronConnect is not necessary and
will also have no effect. The Multis, Quattros, Multi and Inverter RS and MPPT Solar Chargers will charge with the voltage as
received via CAN-bus from the battery. This also applies to systems with a Lynx Smart BMS connected to a GX device.
Color Control GX Manual
Page 64
DVCC - Distributed Voltage and Current
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