Siemens SINAMICS S120 Manual page 520

Maintenance and Servicing
10.4 Replacing components
Description
The service life of the electronic fan is designed for the typical service life of the device itself -
it doesn't operate continuously, but only when required. The electronic fan is monitored in
operation.
If the fan no longer operates correctly, then this is signaled using Alarm A30048 "Power unit:
Fan defective" with alarm value "1" in r2124.
If, with Alarm A30048 active, the measured air intake temperature indicated in r0037[3]
violates an appropriate threshold, then fault F30059 "Power unit: Interior fan defective" is
displayed, and the system is shut down with OFF2.
Preparatory steps
• Disconnect the drive line-up from the power supply
• Allow unimpeded access
• Remove the protective cover
• After it has been removed from the electrical cabinet, the device must be secured so that
it can either topple over nor roll away.
Removal
The removal step numbering corresponds to the numbers in the diagrams.
1. Open the service flap for the Control Interface Module (2 screws).
2. Withdraw the plug connector for the electronic fan the power supply.
3. Release the retaining screws for the electronic fan (2 screws).
4. Remove the electronic fan.
Installation steps
To reinstall, perform the above steps in reverse order.
Tightening torque for the retaining screws of the electronic fan (M6 x 16, item ③): 6 Nm.
Note
Pay attention to the tightening torques
The tightening torques specified in the table "Tightening torques for screw connections" must
be observed.
518
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3