Delta R4E User Manual page 65

【 De-rating Log 】
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① De-rating Log screen
The De-rating Log of the Inverter for four pair types, namely "Over Voltage De-rating_DC",
"Under Voltage De-rating_DC", "Over Temperature De-rating" and "Over Voltage De-rating_AC"
are displayed. A log entry is recorded in following cases:
・ Over Voltage De-rating_DC: In an event the output voltage exceeds the set value.
・ Under Voltage De-rating_DC: In an event the output voltage is low.
・ Over Temperature De-rating: In an event the temperature of the Inverter elevates to a
high level.
・ Over Voltage De-rating_AC: In an event the input voltage is high.
Start time: The date and time of occurrence are displayed.
The occurrence dates are displayed in chronological order, with the most recent
date on the top.
Maximum of 16 entries can be stored for each item of each Inverter.
Once the number of entries exceeds 16 the data the oldest date is overwritten.
Total occurrence time: The total duration of time during which De-rating have occurred is
(When the interval between De-rating duration and other De-rating duration is within five
minutes, then these are counted as a single occurrence of De-rating).
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Data can be downloaded onto USB memory.
The data containing the type of suppression, as well as the Inverter number, start date and
time, as well as total duration of occurrence is downloaded.
Format: CSV
File name: DeviceXDerating_yyyymmdd_hhmm.csv
The "X" in the file name is the ID of the Inverter.
The file name "yyyymmdd" represents the year, month and day on which the data was downloaded.
The file name "hhmm" represents the hour and minute at which the data was downloaded.
DeviceXDerating_yyyymmdd_hhmm.csv
Inverter ID
File description: Event (De-rating type)
※Start (start date and time) is displayed in the order of occurrence (Most recent displayed on top)
displayed.
Year Month Day Hour Minute
Over Voltage De-rating_DC: OPV
Under Voltage De-rating_DC: OPV-Lo
Over Temperature De-rating: Thermal
Over Voltage De-rating_AC: Vin
Inverter # (Inverter ID)
Start (start date and time)
Time (total duration of occurrence)
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What Power Monitor can do
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