Integrated Installation Monitoring
SP25-55_User Manual_B8_EN_2012-11-06 22/32
50 Hz is higher than the alarm threshold for this
variation for longer than 5 minutes.
for variation
from rated
frequency of 50
Hz
frequency
8 Frequent faults. This text is displayed if, during
the past 2 hours, the same fault has occurred
more than 3 times in succession or if more than
6 different faults have occurred.
Number of
the fault (fault
code)
7
9 External. This text is displayed if an external
alarm has been tripped.
- 8
Parameter 279: Configuration warning
Menu: Maintenance
Unit: ---
Resolution: 1
Default setting: 383
Password level: 1
Each of the 9 alarms described above can be activated or deactivated separately.
Parameter 279 is bit-programmed, i.e. each of its bits activates or deactivates one of the 9 alarms.
8 7 6 5 4 3 2 1 0 = Bit
External
warning
1 0 1 1 1 1 1 1 1 = 383
1 0 1 0 1 1 1 1 1 = 351
1 1 1 0 1 1 1 1 1 = 479
Example:
The installation comprises several inverters that are networked by means of their RS485 ports.
However, since the PV generators of the installation have very different orientations (i.e. point in
different directions), integrated yield monitoring is to be performed but no alarm is to be given in the
event of a variation in yield. All other alarms, however, are to remain active. This means that bits 0, 1,
2, 3, 5, 6, 7 and 8 are to remain set, but bit 4 must be deleted. This results in a binary value for P279
of 111101111, which equates to a decimal value of 495. P279 must therefore be set to 495.
Parameter 155: Status warning
Menu: Maintenance
Unit: ---
Resolution: 1
Parameter 155 displays the alarm (warning) currently active. You can find details in the table above.
Please note that only the first alarm given on the particular day is displayed. If further alarms occur
during the course of the day, they are not recorded as subsequent or secondary alarms.
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