Steps to debug the inverter when it is put into operation

The debugging steps of the inverter when it is put into operation mainly include pre-power-on inspection, basic parameter setting, no-load debugging, load debugging, etc. The following are the specific contents:

Pre-power-on inspection

1. Environmental inspection: Ensure that the installation environment of the inverter meets the requirements, there is no dust, water vapor, corrosive gas around, the ambient temperature and humidity are within the allowable range of the inverter, and the installation location is well ventilated.

2. Installation inspection: Check whether the inverter is installed firmly, whether the connection screws are tightened, whether the connection cables meet the requirements, whether the wiring is reasonable, and avoid mixing strong and weak lines to prevent electromagnetic interference.

3. Electrical connection inspection: Carefully check whether the input and output wiring of the inverter is correct, whether the power supply voltage is consistent with the rated voltage of the inverter, whether the grounding is good, and the grounding resistance should meet the requirements of relevant standards, generally not more than 4Ω.

Basic parameter setting

1. Motor parameter setting: According to the nameplate parameters of the driven motor, set the rated power, rated voltage, rated current, rated speed and other parameters of the motor in the inverter so that the inverter can accurately control the operation of the motor.

2. Operation parameter setting: Set the operating frequency range, acceleration time, deceleration time, control mode and other parameters of the inverter. The operating frequency range should be determined according to the actual production process requirements; the acceleration time and deceleration time should be adjusted according to the characteristics of the motor and the load to avoid overcurrent, overvoltage and other faults during acceleration or deceleration; the control mode can be selected according to the specific situation. V/F control, vector control, etc.

3. Protection parameter setting: Set parameters such as overcurrent protection, overvoltage protection, and overheating protection to ensure that the inverter and motor can be protected in time when abnormal conditions occur to prevent equipment damage.

No-load debugging

1. Power-on check: Turn on the power switch and observe whether the display of the inverter is normal and whether there is any alarm information. If an alarm occurs, find the cause and troubleshoot according to the alarm code.

2. Motor rotation direction check: Use the inverter panel or external control signal to start the motor at a lower frequency and observe whether the motor's rotation direction is correct. If the direction is wrong, adjust the output phase sequence in the inverter so that the motor's rotation direction meets the requirements.

3. Inverter operation parameter monitoring: During the no-load operation of the motor, monitor whether the output voltage, current, frequency and other parameters of the inverter are normal and consistent with the set values. At the same time, observe the running status of the motor to see if there are abnormal noise, vibration and other phenomena.

Load debugging

1. Start and run with load: Connect the motor and the load well, and gradually increase the output frequency of the inverter so that the motor drives the load to start and run smoothly. During the load operation, pay close attention to the running status of the inverter and the motor, such as the changes in current, voltage, temperature and other parameters, to ensure that the equipment operates within a safe range.

2. Load adjustment and optimization: According to the requirements of the production process, adjust the load, such as adjusting the speed, torque and other parameters of the load. At the same time, according to the changes in the load, optimize the parameters of the inverter, such as adjusting the acceleration time, deceleration time, PID parameters, etc., to obtain the best control effect and running performance.

3. Protection function test: During the load debugging process, simulate some fault conditions, such as overcurrent, overvoltage, overheating, etc., to check whether the protection function of the inverter is working normally and whether it can cut off the power supply in time to protect the safety of the equipment.