Cerbo GX Manual

'Overruled by remote' setting in VEConfigure

This chapter explains the implications of enabling or disabling user control of the input current-limiter setting, as seen here in the menu:

The limit as set by the user in the Cerbo GX will be applied to all inputs where 'Overruled by remote', configured with VictronConnect or VEConfigure, is enabled:

Using the example of a boat with two AC inputs and a Quattro where:

Configure the system exactly as in above VEConfigure screenshot. Input 1 has priority over input 2, therefore the system will automatically connect to the genset whenever it is running. The fixed input current limit of 50A will be applied. And when the genset is not available, and mains is available on input 2, the Quattro will use the input current limit as configured in the Cerbo GX.

Two more examples: (In both cases if you disable 'Overrule by remote', setting a current limit in the Cerbo GX will have no effect. And if you enable 'Overrule by remote' for both inputs, the current limit set in the Cerbo GX will be applied to both inputs.)

Minimum input current limit values

When PowerAssist is enabled in VEConfigure, there is a minimum input current limit. The actual limit differs for each model.

After setting the input current to a value below the limit, it will automatically be increased again to the limit.

Note that is still possible to set the input current limit to 0. When set to 0, the system will be in passthrough (charger disabled).

Parallel and three phase systems

The configured AC input current limit is the total limit per phase.

The AC supply, either Generator or Grid, to a three phase inverter/charger system needs to be in the correct rotation, also known as sequence. If not, then the Inverter/chargers will not accept the AC supply and remain in Inverter mode.

The Phase rotation warning will be raised in such case. To resolve the issue, change the wiring on the AC input: swap either one of the phases, effectively changing the rotation from L3 → L2 → L1 to L1 → L2 → L3. Or reprogram the Multis and modify the phase assigned to match the wiring.

On the GX device itself, the warning will be popup as a notification on the GUI:

Also, it is visible in the menus:

And on the VRM Portal, it is visible on the VE.Bus Alarms & warnings widget on the Advanced page:

And also it will be listed in the Alarm Log on VRM, and an email will be sent; using the VRM Alarm Monitoring system.

When this feature is enabled, an alarm is raised when the system hasn't been connected to the AC input configured to be Grid or Shore for more than 5 seconds.

The alarm shows as a Notification in the GUI, and as an alarm on the VRM Portal, and is available on ModbusTCP / MQTT.

Recommend to use for backup systems. But also for yachts or vehicles on shore power.

Note that this settings monitors that the system is connected to grid/shore. Generator monitoring is already available as part of the Generator start/stop function and not part of this.

Do not use this feature in systems that use the Ignore AC Input settings in our inverter/chargers: when the system ignores the AC input, ie runs in island mode, as intended, even though grid is available, it will report a grid failure.

Equalisation

Starts equalisation. See Multi or Quattro documentation for details.

Redetect system

Redetects the type of inverter/charger and its features & configuration. Use this feature when, for example, a VE.Bus BMS used to be part of a system, and is no longer.

System reset

Restarts the inverter/charger when it has stopped retrying. For example after a (very) heavy overload; or three overloads in a row.

ESS Relay test

Shows the status of the ESS Relay test. Only relevant when its an ESS system. See Q9 in the ESS Manual FAQ for details