Siemens SINAMICS G150 Operating Instructions Manual page 305

Battery status
In this menu, you can display the battery voltage numerically (in Volts) or as a bar display.
The battery ensures that the data in the database and the current time are retained.
When the battery voltage is represented as a percentage, a battery voltage of ≤ 2 V is equal
to 0%, and a voltage of ≥ 3 V to 100%.
The data is secure up to a battery voltage of 2 V.
● If the battery voltage is ≤ 2.45 V, the message "Replace battery" is displayed in the status
bar.
● If the battery voltage is ≤ 2.30 V, the system displays the following message: "Warning:
weak battery".
● If the battery voltage is ≤ 2 V, the system displays the following message: "Caution: The
battery is dead".
● If the time and/or database are not available after the system has been switched off for a
prolonged period due to the voltage being too low, the loss is established by means of a
CRC check when the system is switched on again. This triggers a message instructing
the user to replace the battery and then load the database and/or set the time.
For instructions on how to change the battery, see "Maintenance and servicing".
Keyboard test
In this screen, you can check whether the keys are functioning properly. Keys that you press
are represented on a symbolic keyboard on the display. You can press the keys in any order.
You cannot exit the screen (F4 – "back") until you have pressed each key at least once.
Note
Exit keyboard test
Alternatively, you can exit the keyboard test screen by pressing any key and holding it down.
LED test
In this screen, you can check that the four LEDs are functioning properly.
Database statistics
For service purposes, the database statistics are displayed in the screen form.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
6.6 Control via the operator panel
Operation
305