Faqs
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How to deal with the overheating fault of the frequency converter?
When this occurs, initially assess the operational status of the cooling fan by manually checking its functionality. If the fan is operating normally, ascertain whether the ambient temperature is excessively high, if there are inadequate ventilation provisions for the inverter, or if there is a malfunction in the temperature detection circuit.
Details2024-04-27
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If the motor fails to operate, what steps should be taken?
Inspect the motor, wires, and inverter for any signs of damage, ensuring that the wires are securely connected. Verify if the "RUN" button on the keyboard is illuminated and check for any error codes displayed. Validate whether the frequency parameters are accurately configured, including frequency source selection, upper and lower frequency limits, and set frequency.
Details2024-04-27
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How to deal with no display on the screen of the inverter after powering it on?
If the power indicator light is illuminated, potential causes for the keyboard display issue may include: 1. Damage or short circuit in the power supply board; 2. Poor connectivity of the keyboard cable; 3. Damage to the main control board. If the power indicator light is not illuminated, possible reasons for this failure could be: 1. Absence of input power; 2. A broken fuse; 3. Damaged rectifier bridge.
Details2024-04-29
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Can a regular motor be speed-controlled using a variable-frequency drive?
A regular motor can achieve variable-frequency speed regulation. However, it is not advisable to use it at low frequencies (below 30 Hz) for a long time as it may cause the motor to overheat and burn out.
Details2024-04-29
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What are the requirements for the installation and use of a variable-frequency drive?
The operating environment temperature is between -10℃ and +40℃. When the temperature exceeds 40℃, it should be reduced by 3% per degree Celsius. The maximum temperature should not exceed 50℃. The relative humidity of the air should be less than 90%, without condensation. The inverter can operate at its rated power when installed at an altitude of 1000m or below. When the altitude exceeds 1000m, it should be reduced by 1% per 100m in proportion. It should b...
Details2024-04-29
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Why does a variable-frequency drive have a leakage current when operating with a motor?
With the absence of a variable-frequency drive, the magnitude of leakage current is typically negligible. However, when employing a variable-frequency drive, the high switching frequency of the inverter's power module introduces higher-order harmonics into the output current. Furthermore, due to the presence of inductance between cables and ground as well as between different cables, a significantly larger leakage current (up to 10 times that observed ...
Details2024-04-29
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Can a single-phase 220V inverter output a three-phase 380V?
It can't be. The single-phase 220V inverters are capable of generating a three-phase output ranging from 0 to 220V, without incorporating any voltage boosting functionality.
Details2024-04-29
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What steps should be taken in the event of a discrepancy between the actual speed and the set speed?
In open-loop operation, the inverter outputs the specified frequency, while the motor's speed fluctuates within the range of the rated slip rate (1%-5%) during operation with a load. In situations where precise control accuracy at high speeds is required, even when there are changes in load, and the motor needs to operate close to the specified speed, a variable-frequency drive equipped with a PG feedback function (optional accessory) can be utilized a...
Details2024-04-29
