Activating Secure Power Supply Operation


If an outlet and a switch for secure power supply operation are connected to the inverter, you can supply a load with current from the PV system in case of a grid failure during the day. If you activate the secure power supply operation, the inverter supplies loads that are connected to the outlet for secure power supply operation.

In case of overload, underload or insufficient solar irradiation, the voltage supply of the outlet is briefly interrupted. The inverter automatically attempts to reestablish the voltage supply 20 seconds after the interruption. This can lead to inadvertent starting of the load that is connected to the outlet. Ensure that the load connected to the outlet does not consume too much power. If necessary, reduce the power consumption of the load.

In case of a grid failure during the night, secure power supply operation is not possible

During the night, secure power supply operation cannot be activated since the PV system does not produce power that is required to supply the load.

  1. In case of a grid failure during the night, do not activate secure power supply operation.
  2. Continue to operate the inverter on the utility grid and wait for restoration of grid operation.
  3. In the event of a persistent grid failure, switch to secure power supply operation after sunrise.

Do not connect loads that require a stable electricity supply to the outlet for secure power supply operation

Secure power supply operation must not be used for loads that require a stable electricity supply. The power available during secure power supply operation depends on the solar irradiation on the PV system. Therefore, power output can fluctuate considerably depending on the weather or may not be available at all.

  1. Do not connect loads to the outlet for secure power supply operation if they are dependent on a stable electricity supply for reliable operation.

Procedure:

  1. If no load is connected to the outlet, connect a load.
  2. Turn the switch of the outlet to secure power supply operation.
  3. Wait one minute.
  • The inverter commences secure power supply operation. As soon as the inverter supplies the outlet with power, the green LED flashes (1.5 s on and 0.5 s off) and the message SPS-mode active is shown in the display along with the amount of power being supplied from the inverter to the outlet. In addition, the control light of the outlet for secure power supply operation glows.
  • The green LED does not flash and no message that the secure power supply operation mode is activated appears on the display or the control lamp of the outlet does not glow?

    The output power of the PV system is too low. Irradiation on the PV system is probably too low or the connected load requires more power than currently available.

    • Ensure that the outlet's switch is set to secure power supply operation.
    • If irradiation is too low, wait for it to increase.
    • Connect a load with lower power consumption to the outlet.

    No voltage can be measured at the outlet?

    • Ensure that the outlet's switch is set to secure power supply operation.
    • Ensure that the switch, outlet and control light for secure power supply operation are correctly connected.