Siemens SENTRON 3VL series - Page 111

Displays and operator controls
8.1 Overcurrent trip unit without LCD display
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
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
LED OFF
LED flashes
LED ON (continuous light)
Green ETU not activated Normal status, the flashing
green LED signals that the
microprocessor is functioning
properly.
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.
● Alarm LED
Color
LED OFF
LED flashes
LED ON (continuous light)
Yellow/orange No overload -- Signals overload,
I > 1.05 x I
R