Reference values for threshold-based switching

When configuring threshold-based switching, ensure that the reference and threshold values are set optimally for your system. Depending on the situation, different reference values may be appropriate.

• System active power: The system’s active power, calculated as the sum of the current inverter outputs, can serve as a meaningful reference value if there are no other loads in the system or if the switching behavior of the heat pump is intended to be independent of other loads in the system. The reference value can only be selected if Monitoring is chosen as the function for the digital or analog output in the I/O configuration.

• System active power (grid feed-in): The active power feed-in measured at the point of interconnection is a meaningful reference value if there are additional loads in the system and the system generates more energy than is consumed, allowing regular feed-in to the utility grid. The reference variable can only be selected if Point of interconnection is chosen as the function of the digital or analog output in the I/O configuration.

• System active power (grid-supplied power): Using the grid-supplied active power measured at the point of interconnection as a threshold is advisable when there is a defined upper limit for grid-supplied power that may be exceeded. The reference variable can only be selected if Point of interconnection is chosen as the function of the digital or analog output in the I/O configuration.