What should be noted when replacing the inverter?

What should be noted when replacing the inverter?

• Inverters are increasingly used in factories and workshops in many different fields. As with other electronic devices, inverters cannot be used forever. At some point it will fail, so replacing the new inverter is inevitable. To make the inverter replacement easy and effective, you need to note the following key points.

1. Save select suitable inverter

1.1. Customer need

• The first thing you need to determine is the type of load you are controlling, which is one of the following: heavy load, medium load, light load. In addition, you need to determine whether the operating mode of the machine is long-term mode or short-term mode.
• Short-term mode: motor accelerates/decelerates, runs/stops and reverses continuously. Therefore, it is necessary to choose an inverter with high overload capacity.
• Long-term mode: the motor runs at a fixed speed, with little change during operation.

1.2. Financial capability

• Currently, the market has many inverter lines of European, Chinese, and Taiwanese brands. And the price between them is very competitive. You should choose an inverter with a reasonable price, but especially note that it must be genuine distributed by a reputable supplier in the market. Warranty and maintenance policy, attentive customer service.

1.3. Specifications

• Select the inverter suitable for the motor type and motor capacity. Specifically, find out if the type of motor in use is synchronous or asynchronous, 1-phase or 3-phase, AC or DC.

2. Inverter replacement experience

2.1. Determine the cause of the current inverter failure

• Before replacing the new inverter, you need to determine the main cause of the failure of the old inverter. Because if the cause is not found, there will be a case of installing a new inverter and still continuing to fail.
• Some of the following reasons you need to pay attention to include: the voltage source for the inverter is not stable. The environment around the inverter is dusty, high humidity, and the motor is loaded. Check the old inverter’s fault code to determine the cause.

2.2. Select suitable inverter specifications for replacement

• Before replacing the new inverter, you need to determine the specifications of the old inverter including: capacity, input voltage, output and size.
• The important information you need to determine is the control mode of the inverter including: communication protocol, closed/open loop control.
• Check the current inverter size to avoid the new larger size inverter cannot be installed in the electrical cabinet.
• For some closed-loop control inverters using encoder card, you need to choose the type of inverter that supports reading the above encoder signal.
• Some accessories that come with the inverter include: discharge resistor, AC/DC Reactor.

2.3. In some cases, it is difficult to replace another brand’s inverter

• In some cases, it is not possible to replace the inverters of other brands, focusing on the communication mode because the similarities between the brands are different.
• The plan in this case needs to interfere with the control software, incurring change programming costs.

2.4. Note when replacing

• When replacing a new inverter from another brand, you need to have a thorough inspection and advice from a team of experienced engineers. Replacement products must be genuine and of good quality. Reputable supplier, ensuring that when there is a problem, always dedicated and fast support.

3. Contact

What should be noted when replacing the inverter?

• If you have a need to buy or quote automation equipment or need further advice, please contact us immediately for dedicated, fast and effective support!
• TRI VIET AUTOMATION SOLUTION JOINT STOCK COMPANY
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