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A: GD20-09 is a special VFD for hoisting application. The conical motor includes internal braking, not require external brake. When the conical motor is used in the lifting industry, can select conical macro directly, the corresponding parameters will be automatically modified. It should be noted that the conical motor must select VF control, and the maximum speed cannot exceed 1.2 times of rated speed, otherwise the internal brake cannot open, will result in the overcurrent fault.
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