AEG Protect PV.500-MH PV.500-MH 用户手册

Protect PV.500-MH Operating Instructions 

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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. 

Fault

OFF

Waiting for feed 

conditions

Fault

Operation

Night

Feed-in 

conditions met

Operating 
conditions 
no longer 
met

ON command

OFF command

OFF command

OFF command

Daytime detection

Night-time detection

Fault

Fault

Fault 
acknowledgement

OFF command

Delay 
complete

Fault

Waiting

 

Figure 6  

Sequence control     

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. 

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