Siemens SENTRON 3WL10 - Page 195

L S I G

Alarm / status Measure / comment
Flashing slowly
(0.5 Hz)
   Circuit breaker in unde‐
󹪝ned or faulty state
Check the position of
the circuit breaker in
the guide frame; check
the functioning of the
modules signaling the
main contacts.
Flashing slowly
(3 x 0.5 Hz) with
3s pause
   Maintenance necessary Perform maintenance.
5 x 󹪞ashing fast
(5 x 2Hz)
   Battery of the connec‐
ted test
device almost empty
(in self-test)
Insert battery.
Note
Other warning indications of the individual LEDs may occur in the vicinity of the ETU wake-up
threshold. Information about the wake-up threshold can be found in Chapter Description of
functions (Page43).
Operation
6.2Alarms
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
194 Equipment Manual, 10/2023, L1V30499596002-03