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Table 12.1-1 LED labels and their color
User configurable
setting
2
Lit up when the IED
is in service.
Lit up when an error
is occurred.
1
Note: LEDs are user-configurable. Users can use them with or without latch function.
2
Note: For setting LEDs, see section 12.6(iv).
(iv) Function keys
Seven function keys (F1 to F7) have the following two features.
➢ Skip to a specific screen directly, set by the user.
Used for skipping to a set page by pressing the function keys. Press again to return to the
previous page. Set by pressing the function key for 2 seconds on the selected page. (See
section 12.5(v)-1)
➢ Test signal generator.
A convenient method that can be used for operating binary signals. Set by assigning the
signal in the settings menu. (See section 12.5(v)-2)
Table 12.1-2 Features of Function keys (F1 to F7)
Skip to a specific screen directly.
Control for the operation of pre-assigned
binary signals.
†Note: The user can program to light the LEDs by itself. Setting are similar to the ones
of the Table 12.1-1 (For setting, see section 12.6(iv)). Note the manufacture
programs to light the respective LEDs in default prior to shipping.
(v) Operation keys
By using the operation keys, the user can display records, relay status etc. Input of setting