ABB DCS880 Drive
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Oct 01, 2024 11:40 am
F517 fault in ABB DCS880 drive indicates Armature current ripple. This means one or several thyristors may carry no current.
- Check the values of 01.50 Current ripple and 01.51 Current ripple filtered1.
- Check the setting of 31.46 Current ripple function and 31.47 Current ripple level.
- Check for too high gain of current controller. See 27.29 M1 current proportional gain.
- Check the positive/negative current feedback with an oscilloscope (6 pulses within one cycle visible?).
- Check the thyristor gate-cathode resistance.
- Check the thyristor gate connection.
- Check the current transformers (T51, T52).
- Check the condition of the mains (voltage, cabling, fuses, switchgear).