NOTE
Siemens recommends replacing the battery when the LOW BATTERY indication is displayed.
In the low battery mode, the following relay operations lead to insufficient operating voltage. The LCD
displays the INSUFFICIENT ENERGY message and the relay enters the sleep mode.
•
Turning on the backlight
•
Resetting the local flag
•
Binary outputs
•
LEDs
NOTE
In the low battery condition, when editing the settings, if the battery voltage falls below 1.5 V, the relay
goes to the sleep mode and all the unsaved settings are discarded.
NOTE
When the battery voltage falls below 1.5 V, the LOW BATTERY LED flickers continuously and indicates that
the critical voltage level is reached. The Critical Battery event is raised. This is not available in MLFB
7SR450[1/3]-xGA10-1AA0 variant.
In Service Operation
6.4 Modes of Operation
72 Reyrolle, Operating, Manual
C53000-B7040-C101-1, Edition 08.2020
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