Run counterclockwise (forward). When the frequency is stable, the fwd light should not flash, but when accelerating and decelerating. If the fwd light of the frequency converter keeps flashing, it means that the frequency converter is still in frequency modulation. If there is a fault after flashing, it is generally that the acceleration and deceleration time is too short, resulting in overcurrent, overload (acceleration) and overvoltage (deceleration) faults of the inverter.

Solution: Check whether the data input of motor nameplate in the Set and drC menus is correct, whether the overcurrent protection threshold is appropriate, whether the inverter selection is suitable for the motor and load, and whether the motor is blocked; Check whether the machine is stuck.

Extended data:

The energy saving of frequency converter is mainly manifested in the application of fans and pumps. After the fan and pump adopt frequency conversion speed regulation, the power saving rate is 20% ~ 60%, because the actual power consumption of the fan and pump is basically proportional to the cubic power of the speed. When the average flow required by users is small, the fan and water pump adopt frequency conversion speed regulation to reduce the speed, and the energy-saving effect is very obvious. Traditional fans and pumps use baffles and valves to adjust the flow, so the motor speed is basically unchanged and the power consumption changes little.

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