When must the fan unit be replaced?
A defective fan in operation results in an overtemperature condition of the converter. For
example, the following messages indicate that the fan unit is defective:
● A05002 (air intake overtemperature)
● A05004 (rectifier overtemperature)
● F30004 (heat sink overtemperature)
● F30024 (temperature model overtemperature)
● F30025 (chip overtemperature)
● F30035 (air intake overtemperature)
● F30037 (rectifier overtemperature)
Precondition
Switch off the converter power supply before replacing the fan unit.
WARNING
Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 minutes until the capacitors in
the converter have discharged so that the residual charge is at a non-hazardous level.
Therefore, touching the converter immediately after powering off can result in electric shock
due to residual charge in the power components.
● Check the voltage at the converter connections before you replace the fan unit.
Corrective maintenance
10.2 Replacing spare parts
SINAMICS G120XA converter
834 Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
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