What should be noted when replacing inverters of other brands?
Inverters are increasingly used in factories and workshops in many different fields. Like other electronic devices, the inverter 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. Choose a suitable inverter from another brand:
According to demand:
The first thing you need to determine is the type of load you’re driving in one of the following categories: heavy load, medium load, and light load. In addition, you need to determine whether the machine’s operating mode is long-term mode or short-term mode.
– Short-term mode: the motor accelerates/decelerates, runs/stops and reverses continuously, so it is necessary to choose an inverter with high overload.
– Long-term mode: the motor runs at a fixed speed, with little change during operation.
According to financial ability:
Currently, the market has many inverter lines of European, Japanese, Chinese, Taiwanese … and the prices are very competitive between the firms. 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, customer care service. attentive.
According to the specifications:
Select the inverter suitable for the motor type and motor capacity. Specifically, find out if the type of motor you are using is synchronous or asynchronous, 1-phase or 3-phase, AC or DC.
2. Some experience when replacing inverters from other brands:
- 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, it will happen that a new inverter is installed and still damaged.
Some of the following reasons you need to pay attention to include: unstable voltage source for the inverter, dusty environment around the inverter, high humidity and a stuck motor. Check the old inverter’s fault code to determine the cause.
- 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 drives using encoder cards, you need to choose an inverter that supports reading the above encoder signal.
Some accessories that come with the inverter include: discharge resistor, AC/DC Reactor.
3. In some cases, it is not possible to replace the inverter with another brand
In some cases, it is not possible to replace the inverters of other brands, focusing on the communication mode due to the similarities between different brands.
4. Some notes:
When replacing a new inverter from a different 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.
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17/08/2021
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