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.
Please check the attached parameter setting block diagram.
According to the power consumption of frequency converter itself, air conditioning is required for use in confined space. Other occasions should be well ventilated.
GD200A can set terminal start, power on automatic operation, automatic fault reset and other functions. Please see the attachment for relevant parameters.
The power consumption of GD20-EU is around 3-4%.
It is suggested to replace the electrolytic capacitor after using it for 30,000-40,000 hours.
When using inverter, because IGBT is in high speed switch, the output current has higher harmonic. There is inductance between cable to ground and cable, so leakage current will be generated.
(1) Measure whether the fan power supply voltage is normal. If the fan power supply is abnormal, repair the fan power supply first;
(2) After confirming that the power supply of the fan is normal, if the fan does not rotate or runs slowly, the fan has failed and needs to be replaced.
This is probably the most common fault in the inverter. First of all, we need to eliminate the fault caused by parameter problems.
For example, current limitation and too short acceleration time may lead to over-current. Then we must judge whether there is something wrong with the current detection circuit, such as Hall sensor, hall cable fault. Whether the output side of inverter is short circuited.