Cerbo GX Manual

For such batteries, there is no need to wire allow-to-charge and allow-to-discharge connections to the AUX inputs on a Multi or a

Quattro.

When inverting, ie in Island mode, Multis and Quattros will shut down when the max discharge current is zero. They will automati-

cally start again as soon as either AC mains returns, or when the BMS increases the max discharge current again.

See previous chapter, “Limit charge current”, the user 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 and MPPT Solar Chargers will charge with the voltage as received via CAN-bus from the

battery.

8.6. DVCC for systems with the ESS Assistant

• The ESS Keep batteries charged mode works properly. It does not without DVCC.

• A fixed solar offset of 0.4V is used instead of a variable 2V. (values for 48V systems, divide by 4 for 12V). Note that this solar

offset is only applied when ESS-mode is set to Optimized in combination with the Feed-in excess solar charger power-setting

enabled, or when ESS-mode is set to Keep batteries charged.

• Add Auto-recharge feature for the ESS Modes Optimized and Optimized (with BatteryLife). The system will automatically re-

charge the battery (from the grid) when the SOC drops 5% or more below the value of ‘Minimum SOC’ in the ESS menu. Re-

charge stops when it reaches the Minimum SOC.

• ESS improved state display: In addition to the charger states (Bulk/Absorption/Float), additional Discharging and Sus-

tain modes were added. In addition it also shows reasons for the state it is in:

• #1: Low SOC: discharge disabled

• #2: BatteryLife is active

• #3: Charging disabled by BMS

• #4: Discharging disabled by BMS

• #5: Slow Charge in progress (part of BatteryLife, see above)

• #6: User configured a charge limit of zero.

• #7: User configured a discharge limit of zero.

Cerbo GX Manual