Siemens G120C Error F07968: Drive: Lq-Ld measurement incorrect

Siemens G120C drive · taken from the manufacturer’s manual, pages cited

Fault codeF07968

The Lq-Ld measurement failed due to issues with current ratios or harmonic levels in the system. The manual's first action is: “Fault value (r0949, interpret decimal): 10: Stage 1: The ratio between the measured current and zero current is too low. 12: Stage 1: The maximum current was exceeded. 15: Second harmonic too low. 16: Drive converter too small for the measuring technique. 17: Abort due to pulse inhibit.”

Model
Siemens G120C
Display shows
Drive: Lq-Ld measurement incorrect (F07968)
Type
Fault code
Source
Manual p. 715

What F07968 means

Drive: Lq-Ld measurement incorrect p. 715

Common causes

  • A fault has occurred during the Lq-Ld measurement. p. 715

What to do

  1. Fault value (r0949, interpret decimal): 10: Stage 1: The ratio between the measured current and zero current is too low. 12: Stage 1: The maximum current was exceeded. 15: Second harmonic too low. 16: Drive converter too small for the measuring technique. 17: Abort due to pulse inhibit. p. 715

Before you service the product, read the safety instructions in the manual p. 4.

If F07968 is still not resolved

  • contact service / dealer p. 4
    “Warning concept This Manual contains information which you must observe to ensure your own personal safety as well as to avoid material damage.”
  • contact service / dealer p. 12
    “WARNING Danger to life if the safety instructions and residual risks are not observed”
Open the manual at page 715 All G120C error codes Manual details & download

This page summarises what the manufacturer’s manual says about F07968; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.