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Fault information and trouble shooting
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SINAMICS V50 converter
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
7.2 Warning information
Once warning information is detected, the frequency converter would immediately
enter the warning indicating state and giving out warning codes on LED display.
During warning the drive keeps running and returns to previous normal status once
the warning is gone. Specific warning information is shown in Table below
Warning
Code
Type
Description
Uu
Warning of under-
voltage
The bus voltage is below the voltage point
OLP2
The pre-warning about
overload of drive
Operating current exceeded the converter
overload pre-detection level and maintained
more than pre-overload detection time
OH2
Heat-sink temperature
is high
Temperature in the radiator higher than the
OH2 standard
SF3
Function codes setup is
not appropriate
Output terminal DO, Y1, Y2 does not
simultaneously select No.10 function
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