Siemens SENTRON 3WA1 - Display and Operating Keys F1 to F4; LED Displays

Description
2.5 Electronic trip unit ETU600
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
89
2.5.2.2 Display and operating keys F1 to F4
The ETU600 electronic trip unit has an integrated color display. This can be used to
display measured values and report events. You can set parameters in combination with
the four operating keys.
The four operating keys F1 to F4 are assigned menu-dependent actions. One to four
operating keys can be active.
(1)
Action that is executed by the assigned operating key
(2)
Operating keys
The display is also used for detailed representation of events. A description of selected
events is given in Chapter Display and menu structure (Page 93).
2.5.2.3 LED displays
Status information of the ETU600 electronic trip unit and the last trip cause are indicated
by LEDs.
LED
Meaning
Description
ACT (active)
Activation of the ETU
Off
Electronic trip unit not activated
Flashing
(frequency: 1 Hz)
Electronic trip unit activated
AL (alarm)
Two-stage overload alarm
Off
Current is less than the set alarm threshold
AL1
On
Current in a phase exceeds the set alarm
threshold AL1
On
Current in a phase is greater than or equal to
the setting I
r
of the overload protection (alarm
threshold AL2)