**What is the Operating Mode of the Inverter?**
1. **No-Load Current Test of the Inverter**
- Ground the inverter's ground terminal to ensure safety.
- Connect the inverter’s power input to a power supply through a leakage protection switch.
- Check the factory display on the inverter’s screen. If it shows incorrect information, reset it. Otherwise, return the unit for service.
- Familiarize yourself with the inverter’s operation keys. Most inverters have 6 basic keys: RUN (start), STOP (stop), PROG (program), DATA (data confirmation), UP (increase), and DOWN (decrease). Some models also include additional keys like MONITOR, RESET, JOG, and SHIFT.
2. **Motor Running at No Load**
- Set the motor’s power rating and number of poles, and consider the inverter’s working current.
- Configure the inverter’s maximum output frequency, base frequency, and torque characteristics. The choice of V/f type includes parameters such as maximum frequency, base frequency, and torque type. The maximum frequency should be set according to the motor’s specifications if it is lower than the inverter’s capability.
- The base frequency determines whether the inverter operates in constant torque or constant power mode, and should match the motor’s rated voltage. Choose between constant torque and variable torque based on the load type.
- For fan and pump loads, set the V/f curve to variable torque. Adjust the starting torque to improve low-speed performance. In asynchronous motor systems, voltage compensation may be needed at low frequencies to maintain sufficient torque.
- Set the inverter to keyboard operation mode, press the RUN and STOP buttons, and observe whether the motor starts and stops normally.
- Understand the protection codes and check the thermal relay settings. Adjust the overload protection if necessary. The electronic thermal relay threshold is usually set as a percentage of the motor and inverter’s rated current.
3. **Load Test Run**
- Manually operate the inverter’s RUN/STOP button and monitor the motor and inverter display for any abnormalities.
- If overcurrent occurs during motor start/stop, adjust the acceleration and deceleration time. The motor’s inertia and load affect the required time.
- If overcurrent still occurs, change the start/stop curve from linear to S-shaped, U-shaped, or reverse S-shaped.
- Increase the maximum current protection value slightly but do not disable the protection. Keep at least 10–20% margin.
- If the problem persists, replace the inverter with a higher power model.
- If the motor fails to reach the preset speed during startup, check the inverter settings again.
**Five Types of Frequency Converter Operation Methods (1)**
1. **Fuji Inverter Operation**
- Use the PRG key to access the menu. Press FUNC to view details, use ∧/∨ to navigate, and press FUNC again to edit values.
- Use the SHIFT > key to select data bits and press FUNC to save. Return to the original state by pressing RESET and PRG.
- During self-learning, set parameter F02 to 0, press FWD or RWD, stop the machine, then set F02 to 1 to complete the process.
**Five Types of Frequency Converter Operation Methods (2)**
1. **Yaskawa Inverter**
- Access the Programming menu using MENU/ESC, enter A1-00 = 1, change it to 0 for English language settings, and press ENTER to save.
2. **Yaskawa Inverter Settings**
- To change the language, go to the AUTO-TUNING menu, select the desired setting, and follow the prompts.
- For auto-tuning, follow the steps until “TUNE SUCCESS†appears. Then return to QUICK SETTING mode.
This guide provides a detailed overview of inverter operating modes and testing procedures. It helps users understand how to properly configure and test their inverter systems for safe and efficient operation.
Enclosure For Mini Safety Breaker
Rccb Enclosure,Breaker Enclosure,Circuit Breaker Enclosure,Circuit Breaker Enclosure Box
ZHEJIANG QIANNA ELECTRIC CO.,LTD , https://www.traner-elec.com