The possible causes of the failure are:
1. The keypad fails or the keypad wire is not connected properly, fix the connection;
2. The main control board is invalid, need to change;
3. The drive board is not connected properly, fix the connection;
4. The power supply of the drive board has problem.
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.
Q: Leakage protection trip: the leakage protection switch often trips, causing the inverter A003 AC undervoltage and A011 power grid loss alarm
A: Possible causes:
1. The rated current of leakage protection switch is too small, or the brand quality is not good;
2. The residual operating current I Δ n of leakage protection switch is too small, and the household power consumption of general residents is 30 ma;
3. Improper handling of AC cable head, reduced insulation, or cable damage;
1. Select high rating leakage protection switch, and good brand.
2. Select leakage protection specification I Δ n ≥ 300mA;
3. Check the AC cable insulation, find the damage part, replace cable or make proper insulation.
ModbusTCP communication is possible, but requires a non-standard design
If motor cable or well depth is >50 meters, we recommended that you please buy AC output reactor,for reducing over-current issue and reducing high voltage shock.
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%.