Operation
6.2 Alarms
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
207
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.
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.
Flashing slowly
(1 Hz; 0.1 s on / 0.9 s off)
ETU ready No measures required
ETU without power supply Check the power supply of the
ETU via the main circuit or the
auxiliary current conductors.
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