Siemens SINAMICS G120P PM330 Installation Manuals page 60

Service and maintenance
5.2 Forming
Code to encrypt the date of manufacture
The date of manufacture is encrypted in positions 3 - 6 of the serial number.
Figure 5-2
In this example, the date of manufacture is April 21, 2013
60
Code to encrypt the date of manufacture
Hardware Installation Manual, 10/2016, A5E32844552B AD
Power Module PM330