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6.4.
How to Check Protection History
When the converter stops due to a protection operation, it stores data such as AC current and AC voltage of
the protection.
You can always see and check data of the last six protection histories by selecting the monitor item "trbLE."
For details of displayed items, refer to {6.2.2. List of Data of Protection Operation and Protection History
Display}.
1. When the [FNC] LED on the console is on, press the [MONI/FNC] key.
･
The [FNC] LED turns off, and the console enters the monitor (MONI) mode.
･
The current monitor item is displayed for about one second, and then its data is automatically displayed.
･
For details of the monitor (MONI) mode, refer to {4.2.4. Checking Operating State}. For details of monitor
items, refer to {4.2.5. List of Monitor Items}.
2. Press either of the [SET] key, [
↑
] key, or [
↓
] key to return to the display of the monitor item.
3. Press either of the [SET] key, [
↑
] key, or [
↓
] key to display
"trbLE" (display protection history).
･
Unless you press any key within one second while the monitor
item is displayed, you cannot change it.
･
About one second later, up to last six protection operations
are displayed in turn every one second.
･
The protection history starting with the number "1." is the
oldest.
↓
↓
･
When there is no protection history, "-----" is displayed. Press the [SET] key to return to the display of
the monitor item "trbLE."
･
Press the [SET] key while the protection history is displayed to return to the display of the monitor item
"trbLE."
