Siemens SINAMICS S120 Equipment Manual page 114

Motor Modules with Cold Plate
7.5 Installation
Properties of the heat sink
AlMgSi 0.5 is recommended as the heat sink material.
The roughness of the external heat sink surface should be at least Rz 16 and the contact
surface between the heat sink and cold plate should have an evenness of 0.2 mm
(applicable to a height of 450 mm and width of 300 mm).
Note
The machine manufacturer can choose the right heat sink version for his special plant
requirements. The specified rated data for the Power Modules can only be achieved if the
power losses can be dissipated from the external heat sink under the specified general
conditions.
Notice
During installation, you must make sure that the threaded bolts do not damage the cold
plate.
Remove the holder for securing the Control Unit
If an additional component is to be flush-mounted to the left of the component, the holders
for securing the Control Unit must be removed.
Use suitable tools to lift the latching
device and push up the holder.
7-14
Remove the holder. The holder removed
Equipment Manual Booksize Cold-Plate Power Sections
Manual, (GH4), Edition 06.2005, 6SL3097-2AJ00-0BP2