AEG PV.630 manual System Function, Description of Sequence Control, OFF Status

Protect PV.630 Operating Instructions

5 System Function

5.1Description of Sequence Control

As soon as the equipment's control module is supplied with volt- age, sequence control starts.

Initially, load interrupter switch Q4 remains open. Once the initiali- sation phase is complete and if no deactivating faults are pending, load interrupter switch Q4 is closed. During subsequent operation, the switch is only opened by deactivating faults ( Chapter 6).

Inverter output contactor K7 remains open initially. The contactor is switched by the sequence control.

The figure below provides a graphical illustration of the sequence control statuses.

	OFF command	OFF command
		OFF
Operation	ON command	OFF command
	Feed-in
	conditions met	Daytime detection
	Waiting for feed		Night
	conditions
Operating	Delay	Night-time detection
conditions
no longer	complete
met
Fault
	Fault	Fault
		acknowledgement
	Waiting
	Fault
		Fault
		Fault
		OFF command

Figure 6 Sequence control

5.1.1The “OFF” Status

The equipment has been switched off logically via the DOU or the master control unit.

The equipment is running without faults, the monitoring systems are not activated.

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

Possible change of status:

The status can be switched from “OFF” to “Waiting for feed condi- tions” by switching the equipment on via the DOU and the master control unit.

5.1.2The “Waiting for Feed Conditions” Status

The values of the DC voltage on the PV cells, the mains voltage and the mains frequency are monitored by the equipment.

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