Operating instructions

Protect PV.600/800 OD Series - Operating Instructions
8000041160 BAL Page 43 of 100
5.6 MPP Tracker
In the "Operation" status ( Chapter 5.1.3), the optimum efficiency
level is determined by the MPP tracker.
Figure 9 - MPP performance curve
5.7 Monitoring and Fault Messages
5.7.1 General
Fault messages are only detected by the monitoring systems when
the inverter is switched on.
A distinction is made between deactivating, self-acknowledging
and signalling faults.
Deactivating faults switch the equipment off permanently once
they have occurred a number of times. The output contactor K7
and the load interrupter switch Q4 are opened.
When a fault first occurs, it can be acknowledged after a certain
time has elapsed and the inverter makes a start-up attempt. This
start-up attempt is only made if the DC voltage did not drop too
dramatically during the fault. If the cause of the fault is still present
after the start-up attempt, the inverter is switched off again.
A maximum of three start-up attempts are made.
Each time the inverter is switched off, K7 and Q4 are opened.
After a successful start-up and once a certain operating time has
elapsed, the counter for start-up attempts is reset.
If the third start-up attempt is unsuccessful, the inverter is switched
off permanently. No more independent acknowledgements occur.
The fault can be rectified by acknowledging it manually or by
switching the equipment off and on. If the cause of the fault is still
present following manual acknowledgement, another deactivating
fault will be generated.
Self-acknowledging faults switch the equipment off.
Output contactor K7 is opened, load interrupter switch Q4 remains
closed.