Defect;"Manifestation in cyclogram";"Diagnostic signs" "Motor output shaft beat";"Opening/closing takes more time than rated";"Shared characteristics according to cyclogram: valve final action time" "Gate moving smoothness less than normal (equal in all three phases)";"Segment 3: gate moving smoothness (in terms of current) for phases (for envelope, Hilbert); current smoothness difference for phases" "No sufficient lubricant or lubricant contamination in the motor drive gear box";"Gate moving smoothness less than normal (equal in all three phases)";"Segment 3: working current asymmetry; gate moving smoothness (in terms of current) for phases (for envelope, Hilbert); spectrum amplitude" "High torque during valve closing" "Startup current much in excess of working current";"Shared characteristics according to cyclorgam: ratio of startup current to gate moving current; valve final action time" "Opening/closing takes more time than rated";"Segment 4: segment maximum; distance between maximum and minimum" "Motor high-load operation" "Motor winding damage (defects)";"Working current and voltage asymmetry in phases (phase unbalance over 10%)";"Segment 3: working current asymmetry" "Motor malfunctions";"Startup current much in excess of working current";"Segment 1: peak width at half height; segment maximum; sum of squared deviations from rising edge linear regression" "Long motor starting time" "Working current greater than rated";"Segment 3: working current value for phases" "Opening/closing takes more time than rated";"Shared characteristics according to cyclogram: ratio of startup current to gate moving current; valve final action time"