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USB flash drive 
for updating the 
inverter software
With the help of the USB flash drive, end 
customers can also update the inverter 
software via the SETUP menu: the update 
file is first saved to the USB flash drive, from 
where it is then transferred to the inverter.
Remove USB 
stick
USB symbol on the inverter display, e.g. in display mode 'NOW':
If the inverter detects a USB flash drive, 
the USB symbol will appear in the top right 
corner of the display.
When inserting a USB flash drive, check 
whether the USB symbol is displayed (it 
may also flash).
NOTE! Please note for outdoor applications that conventional USB flash drives 
are often only guaranteed to work within a restricted temperature range. For out-
door applications ensure that the USB flash drive also functions, for example, at 
low temperatures.
AC Output Power
NOW
USB
+
3
5
4
4
1
2
2
Security note concerning the removal of a USB stick:
IMPORTANT! To avoid any loss of data, a 
USB stick may only be removed if the fol-
lowing conditions are met:
- only remove a USB stick via the 
'Safely remove USB / HW' item on the 
SETUP menu
- the 'Data transmission' LED has 
stopped flashing or comes on steady.
Do not disconnect 
USB-Stick
while LED is flashing!
X