Siemens SENTRON 3VL160X System Manual page 111

LED display
LED display of the ETU VL160 – VL1600 electronic trip units
● Active LED
The protective function of the molded case circuit breaker is always guaranteed regardless
of the current status of the ETU.
Color
Green
● Alarm LED
Color
Yellow/orange
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
LED OFF
ETU not activated
LED OFF
No overload
8.1 Overcurrent trip unit without LCD display
LED flashes
Normal status, the flashing
green LED signals that the
microprocessor is functioning
properly.
LED flashes
--
Displays and operator controls
LED ON (continuous light)
The LED is in continuous
light mode when the current
flow of the processor is
below the activation limit, in
other words, when the load
current flow is too low.
LED ON (continuous light)
Signals overload,
I > 1.05 x I
R
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