1. The input voltage is too low

2. The phase missing plate fails

3. The main control board fails

4. Parameter Settings are incorrect

1. The 24V and OPEN short-circuit connectors of the terminal are lost

2. The 24V voltage of the terminal is abnormal

3. The terminal is damaged

4. The terminal polarity is incorrect

5. The parameter Settings are incorrect

The indicator on the mainboard is on, and the keyboard does not display fault

1. The keyboard cable is improperly connected or the keyboard is damaged

2. The keyboard display Settings are incorrect    

Indicators on the mainboard are off

1. No power is supplied

2. The rectifier bridge is broken

3.  The power supply of the driver power module is damaged or short-circuited

•  Measured with a digital meter with a diode, negative pen point inverter "+" pole, positive pen point inverter input terminals R, S, T and output terminals U, V, W;

•  The measured voltage drop of R, S, and T terminal rectifier bridge tubes is between 0.26-0.38, and the measured voltage drop of U, V, and W modules is between 0.3-0.38, and all three phases are balanced.

• Conversely, the positive pen point AC drive "-" pole, the measured result is the same, indicating that the main loop pipe pressure is normal

When this situation is encountered, first check by hand whether the cooling fan is operating normally, and when the fan is operating normally, determine whether the ambient temperature is too high, whether the AC drive is poorly ventilated, or whether the temperature detection circuit is malfunctioning.

AC drive is a harmonic source, easy to control equipment interference; correct grounding is very important, so the AC drive is required to be independently grounded, correct grounding can make the equipment to reduce 60% of the interference.

 Can be used simultaneously

The AC drive has been set a password.

1. Find the password, enter it and press "ENTER" to confirm, you can debug the parameters;

2. If you can not find the password, you can only return to the factory for maintenance;

3. After entering the password, you can clear the password FP-00=00000.

Frequency source selection: Select the input channel of the given frequency of AC drive, in general, there are the following choices:

      0. Digital setting (preset frequency F0-09, can be modified, no memory for power down);

1. Digital setting (preset frequency F0-09, can be modified, power-down memory);

2. AI1 (analog: 0-10V/0-20mA);

3. AI2 (analog: 0-10V/0-20mA);

4. Multi-segment instruction;

5. Simple PLC;

6. PID;

7. Communication given;

8. PULSE pulse setting;

9. Digital setting (preset frequency F0-09, can be modified, stop memory power-down is not memorized);

10. Keyboard potentiometer.

    Command source selection: Select the input channel of inverter control command, including operation panel command channel, terminal command channel and communication command channel.

U1-06 DI input status;

U1-07 DO output status; (hexadecimal display)

 The upper limit frequency is the maximum operating frequency set according to the production needs, which does not correspond to a certain definite given signal. When the upper limit frequency is less than the maximum frequency, the maximum frequency that the inverter can output is determined by the upper limit frequency.

1. In the alignment, the power output line of the AC drive should be as far away as possible from the control signal lines, especially the sensitive signal lines, such as analog signals and communication signals;

2. When the alignment can not be separated, you can add a magnetic ring on the output UVW of the AC drive;

3. The control circuit enclosure or shielding wire must be connected to a clean PE, such as the enclosure of a punch press, and it is prohibited to connect to the same grounding row as the AC drive's power PE;

4. In the PE or reference level clean premise, you can add a signal line to the reference level decoupling capacitor to filter out noise;

5. Ensure that the 485 communication ground must be connected between.

F8-54=1 to display the A1-A6 group of parameters

1. Check whether the insulation of the motor is good and whether it is short-circuited to ground

2. Check whether the braking resistor is short-circuited to ground

3. Whether the driver board and module are normal or not

1. Whether the acceleration time is too short, the process allows the extension of the acceleration time, or need to replace the higher power inverter

2. Whether the motor is rotating to start, such as setting the speed tracking start or wait for the motor to stop and then start

3. Whether there is any problem with the insulation of the motor

4. Whether there is a sudden change in the load during acceleration, such as canceling or eliminating the sudden change in the load or extend the acceleration time