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Controllable Consumption Device According to §14a EnWG

Chargers are classified as controllable consumption devices according to §14a EnWG, as their connection power exceeds 4.2 kW.

WARP3 Chargers can be controlled by the grid operator in various ways. Which option can be used depends on the requirements of the local grid operator.

Interfaces (EEBus, OCPP, Modbus TCP, HTTP, MQTT)​

In general, the charging power of the charger can be controlled via all implemented interfaces. Grid operators currently use OCPP or Modbus TCP for control, if at all.

In the future, EEBus is intended to serve as the interface for controlling consumption devices by grid operators.

Ripple Control Receiver/Control Box Directly at WARP Charger​

A potential-free contact (voltage-free switching contact) can be connected at the shutdown input inside the charger. For this, a control line from the ripple control receiver or the grid operator's control box must be routed into the charger and connected to the charge controller. For details on the connection at the terminal block, see Assembly and Installation.

In the charger's standard configuration, charging is limited to 4200 W when the shutdown input is closed. This behavior can be adjusted in the web interface under Wallbox -> Settings.

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Ripple Control Receiver/Control Box via WARP Energy Manager​

Instead of routing a control line into the charger, there is also the option to connect the inputs of the WARP Energy Manager to the ripple control receiver or control box. The WARP Energy Manager then controls the power of the charger(es) via the network (LAN/WLAN). A separate control line is not required. The WARP Energy Manager must be configured as the load manager of the respective charger(es) for this purpose. Subsequently, the following rule must be created in Energy Manager -> Automation:

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Instead of 6 A, 18 A must be selected for single-phase operation.

In the automation list, the added automation rule then appears as follows:

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Similarly, another rule must be created that removes the maximum total current limitation when the input is open. For this, "Limit maximum total current" must be selected again as the action, but this time with the option "Reset maximum total current (...A)" as the mode.