Siemens SINAMICS G120D Operating Instructions Manual page 31

Mounting orientation
Mount the converter on a table or on a wall. The minimum clearance distances are as
follows:
● Side-by-side - no clearance distance is required
● Above and below the inverter 150 mm (5.9 inches).
Restrictions due to vertical mounting
If the converter is mounted in the vertical position, the maximum ambient temperature is
40°C.
Additionally you have to reduce the converter output current to 80 % of rated converter
current.
If the output current derating adversely affects the application, you have to use an converter
of the next highest power rating.
Converter with control units CU240D-2
Operating Instructions, 04/2014, FW V4.7, A5E34262100B AA
Figure 4-3 Mounting orientation: correct (✓), impermissible (X), permissible with restrictions (!)
Installation
4.1 Mechanical Installation
31