Replacing The Heat Sink Fan - Siemens SINAMICS G120 Operating Instructions Manual

Servicing and maintaining

11.3 Replacing the heat sink fan

11.3 Replacing the heat sink fan
When do you have to replace the fan?
A defect fan involves an over temperature of the converter. Indications for a defective fan are
e. g. the following alarms and faults:
● A05002 (Air intake overtemperature)
● A05004 (Rectifier overtemperature)
● F30004 (Overtemperature heat sink)
● F30024 (Overtemperature thermal model)
● F30025 (Chip overtemperature)
● F30035 (Air intake overtemperature)
● F30037 (Rectifier overtemperature)
Preparatory steps
● Power-down the converter
● Disconnect all the cable connectors for line, motor and braking resistor.
● Remove the screening plate.
Removal
The heat sink fan of the converter is situated at the bottom of the converter below the
detachable connectors.
1. Using your fingers, press the locking latches to release the fan module.
2. Pull the fan module out from the fan module housing.
Installation
1. Ensure the fan module is correctly orientated (see figure below).
2. Gently push the fan module into the fan module housing, ensuring that the power
3. The fan module will click into place as the locking latches are engaged correctly.
4. Re-assemble the Converter by following the preparatory steps in reverse.
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connections are aligned correctly.
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB