Otis Elevator Parts LRU-402 Inverter PCB Board KDA26800ABS6 KEA26800ABS2 KEA26800ABS6

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Current FDBK sum DSP
The software detects that the three-phase output current vector sum is not 0 and exceeds the parameter INV IO LIMIT
(1) Check INV IO LIMIT;
(2) Check the insulation of the three-phase output U, V, W;
(3) Check the connection between VA/VB and XU2 board;
(4) Replace XU2 board or LEM board;
(5) Replace inverter
6. Overtemp Motor or inverter overheating
(1) Is the ambient temperature too high?
(2) Check whether the inverter fan is working?
(3) Check thermistor and related plug-ins;
(4) Replace XU2 board
7. Motor Overload Motor overload
(1) Check speed parameters and motor learning parameters;
(2) Check parameters DRIVE RATED
RMS, MTR OVL TMR, MTR OVL I FAC, INV I FASCALE;
(3) Check MCSS acceleration, jerk and balance coefficient parameters;
(4) Is the brake fully open?
(5) Motor connection;
(6) Balance coefficient;
(7) PVT and connection