Digital input DI 1-4

A ripple control receiver or remote terminal unit can be connected to digital input DI 1-4.

Information on EnWG §14a: Via the digital input, known as the grid operator interface, the SMA eCharger can respond to grid operator specifications to prevent grid overload. The external control device can temporarily limit the charging power according to the specifications of the grid operator. The type of external control device (e.g. control box or ripple control receiver) is determined by the responsible grid operator.