AEG PV.500-MH manual 5.1.3The Operation Status, 5.1.4The Waiting Status, Possible change of status

Protect PV.500_MH Operating Instructions

The set monitoring values are regularly checked.

In this status, no power is fed into the mains.

Possible change of status:

If the DC voltage rises above a certain value for a certain time and the mains voltage and mains frequency are within a certain range, the unit switches to the "Operation" status. A start-up attempt is made, which involves switching on the inverter stack. If the DC voltage collapses too dramatically during this start-up attempt, the inverter stack is switched off again and there is a delay before at- tempting to start up again. The equipment will not switch to the "Operation" status until any dip in the DC voltage that occurs dur- ing a start-up attempt is within acceptable limits.

If the DC voltage falls below a certain value for a certain time, the equipment switches to the "Night" status.

If a deactivating or self-acknowledging fault is triggered, the equipment switches to the "Fault" status.

The status can be switched from "Waiting for feed conditions" to "OFF" using the "Off" control command.

5.1.3The "Operation" Status

The equipment has met all conditions for operation and no deac- tivating or self-acknowledging faults are present.

The set monitoring values are regularly checked.

In this status, power is fed into the mains and inverter output con- tactor K7 is closed.

Possible change of status:

If the generated power falls below a certain value for a certain time, the operating conditions are no longer met. The equipment then switches to the "Waiting" status.

If a deactivating or self-acknowledging fault is triggered, the equipment switches to the "Fault" status.

The status can be switched from "Operation" to "OFF" using the "Off" control command.

5.1.4The "Waiting" Status

If the power fed in falls below a certain value when the equipment is in "Operation", it switches to the "Waiting" status. Although the incoming power is low, the DC voltage of the PV cell could still be high enough and even stable enough to meet the feed conditions in the "Waiting for feed conditions" status. So that the inverter does not switch back on again immediately, thereby subjecting inverter output contactor K7 to unnecessary strain due to frequent switch- ing, after the "Operation" status the unit initially switches to the "Waiting" status. It remains in this status for a certain time, only switching to the "Waiting for feed conditions" status once this time has elapsed.

The set monitoring values are regularly checked.

Possible change of status:

Once the delay has elapsed, the unit switches to the "Waiting for feed conditions" status.

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