Operation
6.2 Alarms
Air circuit breaker 3WL10
162
Manual, 11/2017, L1V30499596002-01
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 off)
ETU ready
No measures required
Off
ETU without power supply
Check the power supply of the
ETU via the main circuit or the
auxiliary current conductors.
LED displays of the protection releases
L
S
I
G
Alarm / status
Measure / comment
Flashing fast
(2 Hz)
Flashing fast
(2 Hz)
Flashing fast
(2 Hz)
Flashing fast
(2 Hz)
Auxiliary solenoid
closing coil / shunt
release (CC/ST) not
connected or
trip command failed
Check connections.
Flashing slowly
(0.5 Hz)
Flashing fast
(2 Hz)
Flashing fast
(2 Hz)
Flashing fast
(2 Hz)
Current sensor not
connected
Check connections.
Flashing slowly
(0.5 Hz) with 2 s
pause
Flashing slowly
(0.5 Hz) with 2 s
pause
Flashing slowly
(0.5 Hz) with 2 s
pause
Flashing slowly
(0.5 Hz) with 2 s
pause
Fault in rating
plug
Check the connection
between the release
and the rating plug.
Perform installation.
Flashing slowly
(0.5 Hz)
Flashing slowly
(0.5 Hz)
Flashing slowly
(0.5 Hz)
Flashing slowly
(0.5 Hz)
Internal configuration
error
Contact Siemens
Technical Support.
Summary of Contents for SENTRON 3WL10
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Page 8: ...Table of contents Air circuit breaker 3WL10 6 Manual 11 2017 L1V30499596002 01 ...
Page 170: ...Operation 6 3 Troubleshooting Air circuit breaker 3WL10 168 Manual 11 2017 L1V30499596002 01 ...
Page 180: ...Technical specifications Air circuit breaker 3WL10 178 Manual 11 2017 L1V30499596002 01 ...
Page 199: ...Air circuit breaker 3WL10 Manual 11 2017 L1V30499596002 01 197 Circuit diagrams 10 ...
Page 212: ...Circuit diagrams Air circuit breaker 3WL10 210 Manual 11 2017 L1V30499596002 01 ...
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