606.x DC voltage too low
Description
The DC link voltage remains in operation under a certain value compared to the power input.
Two events result in this error:- During a soft start, K2 has not yet picked up after expiry of the 'Max Charge Time'.
- In 'Standby' or 'On' (link loaded or welding current ON), the measured DC link voltage is lower than the peak input voltage minus 100 V.
Remedy
- Measure load resistors by measuring the electrical resistance of X102.1 at X101.L1, X102.2 at X101.L2 and X102.3 at X101.L3. Approx. 33 ohm should be shown here.
- Check power input.