Siemens SINAMICS G120 · Fault F30011
F30011 — Power unit: Line phase failure in main circuit
On a Siemens SINAMICS G120, fault F30011 reads “Power unit: Line phase failure in main circuit”. Here's what to check — cited to the manual.
Grounded · SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA) · manual-cited
What this fault means
At the power unit, the DC link voltage ripple has exceeded the permissible limit value.
SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA), p.525
“F30011 Power unit: Line phase failure in main circuit — Cause: At the power unit, the DC link voltage ripple has exceeded the permissible limit value.”
First checks (from manual)
- check the main circuit fuses
- Check whether a single-phase load is distorting the line voltages
- Detune the resonant frequency with the line inductance by using an upstream line reactor
- check the motor feeder cables
SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA), p.525 — Remedy column
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