Siemens SINAMICS PM240-2, Hardware Installation Manual

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Service and maintenance
6.2 Commissioning after a long storage time
Power Module PM240-2
Hardware Installation Manual, 01/2017, A5E33294624B AE
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6.2 Commissioning after a long storage time
If the inverter was not operational for a longer period of time, it is possible that you must form
the DC-link capacitors before switching on.
Form the DC-link capacitors in the following cases:
● If the inverter was not operational for longer than one year.
● If the date of manufacture of the inverter was more than one year ago when
commissioning the drive system for the first time. The date of manufacture is coded in the
serial number (see the next paragraph).
You form the DC-link capacitors by connecting power to the inverters as shown below.
Figure 6-1 Forming the DC-link capacitors
Data of manufacture of the inverter
The date of manufacture of the inverter is coded in positions 3 - 6 of the serial number.
Figure 6-2 Data of manufacture in the serial number (example, April 21, 2013)