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Multi RS

Auxiliary inputs

The Multi RS is equipped with 2 digital input ports, they are labelled AUX_IN1+ and AUX_IN2+ on the removable terminal block, with AUX_IN- being the common terminal for both.

An AUX_IN+ input is considered active when it is connected to AUX_IN-.

Warning

Do not connect any of the AUX_IN terminals to the battery positive or negative.

The diagram on the right shows AUX_IN1 as active.

Connector_aux_input_active.png

The diagram on the right shows AUX_IN1 as inactive.

Connector_aux_input_inactive.png

In VictronConnect, the Aux input settings page allows different functions to be configured.Aux Input

  • Unused: The Aux input has no function.

  • AC IN connect: The AC input can be connected or disconnected as needed. For example, you can disable the AC input during expensive peak periods of a time-of-use tariff. Either an active signal or an inactive signal can be used to set the AC input connected state.

  • AC IN feed-in enable: In a grid parallel installation, the Aux input can be used to enable or disable grid feed-in. Either an active signal or an inactive signal can be used to set the feed-in state.

  • Safety switch: The Multi RS only operates when the Aux input is active.

    This can be used to remotely switch off the Multi RS if the REMOTE_L and REMOTE_H terminals are configured for a 2-wire BMS.

    It could also be used as a separate safety switch signal from another system which needs its own input.

    Note

    If the REMOTE_L and REMOTE_H terminals are in a state that switches the Multi RS off, then this will override the Aux input Safety switch function, and it will remain off.

    For example, if the REMOTE_H and REMOTE_L terminals are open circuit, then the Multi RS will be switched off regardless of the state of the Aux input Safety switch

If the same function is assigned to both aux inputs then they will be treated as an AND function, so both will need to be active for the function to be recognized as active.

Note

Some grid codes require the auxiliary inputs to be used for charge power limiting or to prevent export. Any grid code functions will override functions defined in the Aux input settings and they will be greyed out.

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