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Q : When VFD startup, after a few secdons, dEU failure is reported. How to solve it?
A: dEU is the speed deviation fault. Set the speed and detect the speed deviation. After the detection time is exceeded, the inverter will stop reporting the dEU fault. The reason may be that the load is too heavy or the rotor is blocked, which causes the speed deviation to be too large. It is necessary to check the load condition, extend the speed deviation detection time, and adjust the speed loop PI parameters according to the control mode to increase the reduced output torque.
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