Possible causes:
- The movement (the back and forth) of the wire and the final wire break happens, because the analog signal is right on the threshold to start. You can solve the problem, when you increase the „Hertz“ setting of the frequency converters U4 and U6.
- Place the programming display on the converter U4 and change the parameter C19 from 5Hz to 7Hz, and do the same for the converter U6.
- A second reason for this phenomena could be the incorrect position of the analog sensors B1 and B2, see the following description, which is explained for the CM X8, but is valid also for the other automatic welders.
