Posted by Peter Kennedy on 3/3/2025 to
System Integration
The following notice was released by Victron Energy on March 3rd, 2025
Released today, VE.Bus firmware version v555 introduces two significant improvements: one for systems combining gensets with Multi and Quattro inverter/chargers, and another for the German ESS market.
- Improved system stability in combination with certain gensets: Previously, some genset and inverter/charger combinations required enabling the Weak AC Input setting for proper operation. With this update, that is no longer necessary, resulting in a higher maximum charge current. This improvement applies when the selected grid code is "None" or "Other," which are the recommended settings for genset connections.
- Added support for the German §14a EnWG requirement: The system can now limit battery charging to 4.2 kW via the AUX 2 port on the inverter. This functions similarly to the existing §9 EEG implementation, which uses AUX 1 to disable feed-in. The new §14a setting is enabled by default and is available in the latest VEConfigure version, released today.
WARNING: updating the firmware of VE.Bus inverter/chargers is strongly advised to be carried out by trained personnel only. Performing the update will cause all settings to be reset to their default & require the product to be reconfigured. .
In approximately two weeks, the VictronConnect App will be updated to carry the new v555 firmware.
See the PKYS article and video How to update the Firmware in your MultiPlus or Quattro
Peter Kennedy has been in business since 1991 designing, installing and servicing marine electrical systems. The purpose of this blog is to offer support to both professional installers and do-it-yourself boat owners who wish to undertake this work themselves.
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