Siemens SINAMICS G120 · Fault F30003
F30003 — Power unit: DC link voltage undervoltage
On a Siemens SINAMICS G120, fault F30003 reads “Power unit: DC link voltage undervoltage”. 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
The power unit has detected an undervoltage condition in the DC link.
SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA), p.523
“F30003 Power unit: DC link voltage undervoltage — Cause: The power unit has detected an undervoltage condition in the DC link.”
First checks (from manual)
- check the line supply voltage
- check the line supply phases
SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA), p.523 — Remedy column
Parameters to check
p0210
Drive unit line supply voltage
SINAMICS G120C List Manual (LH13, 04/2014, A5E33840768B AA), p.48
“p0210 Drive unit line supply voltage / V_connect”
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