Siemens SINAMICS DCM Manual page 561

Descriptions of functions
10.26 Operation on a single-phase line supply
Parameterization
Selecting operation on a single-phase line supply with p51799 = 1
If single-phase operation is selected for a converter with more than 125 A rated DC current,
then fault message F60058 with fault value r0949[0]=5 is output when the converter is
switched-on.
The high current ripple in this mode causes ripple in the actual speed. For smooth speed
control, it is recommended to set the actual speed smoothing to approx. 10 ms (p50200 =
10 ms)
Derating
When selecting operation on a single-phase line supply, the rated DC current (r50072[0]) is
automatically reduced to 67% of the value for 3-phase operation. The reason for this is the
uneven distribution of the current in the thyristors in the power unit of the drive converter.
As a consequence, the rated output voltage is also reduced. See also Technical data in
Chapter 4.
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Operating Instructions, 02.2015, A5E34763375/RS-AA/001
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SINAMICS DCM DC Converter