Alarms of ETUs of the 6-series
The electronic trip units of the 6-series indicate the signals and alarms on the display and with
the warning displays. This LED ACT additionally indicates that the ETU is ready for operation.
① LED ACT
② Warning display 1
③ Warning display 2
④ "i Test" control key
⑤ Display
Display of the LED ACT
The LED name "ACT" stands for ACTIVE. This LED indicates that the ETU is ready for operation.
If the LED does not light up, the power supply of the ETU is interrupted and the ETU is not
ready to operate.
ACT Alarm / status Measure / comment
Flashing slowly
(1 Hz; 0.1 s on / 0.9 s o)
ETU ready No measures required
O
ETU without power supply Check the power supply of the
ETU via the main circuit or the
auxiliary conductors.
Operation
6.2Alarms
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 195
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