Mitsubishi inverter selection must pay attention to: a model of FR-F740-18.5KW-CHT Mitsubishi inverter, the relevant parameters are as follows: parameter P570: 1, rated current 35A. With a fan with a power of 18.5KW (motor rated current 34.4A). When the inverter runs to 45HZ, the detection current is 34A. However, according to the use requirements, it needs to be accelerated to 50HZ. At this time, the actual current detected by the inverter is 37A. In this case, can the inverter run for a long time without alarm? If there is an alarm, can you set the inverter parameter P9 to 37A directly under this circumstance? But this time it is overloaded for the inverter, can it be set in reality?
For the above explanations and assumptions, let's take a look at the following analysis of the above inverter selection case can work? First of all, the workers suggest that customers should not consider the power in the future when selecting the inverter. It should also be combined with the current to select the inverter model, so that it can more effectively avoid the overload of some inverters. The above situation is now running at 50HZ. In the case of 37A, the Mitsubishi F700 inverter has a certain overload capability, but if it is operated for a long time, there may be an overcurrent or overload alarm. It is recommended to set the inverter parameter P80 to the motor power, and see if the output current can be lowered. At the same time, the inverter parameter P9 is used for electronic overcurrent protection. Generally, the rated current of the motor is used to protect the motor, so it is related to the alarm of E.THM. The overload setting of the inverter is useless. The Mitsubishi F700 inverter has its own rated current value and can be changed without parameters. Therefore, it is very troublesome to report the overload. It is recommended that the customer should fully consider the rated current of the motor when selecting the inverter. And power two factors.
For the above explanations and assumptions, let's take a look at the following analysis of the above inverter selection case can work? First of all, the workers suggest that customers should not consider the power in the future when selecting the inverter. It should also be combined with the current to select the inverter model, so that it can more effectively avoid the overload of some inverters. The above situation is now running at 50HZ. In the case of 37A, the Mitsubishi F700 inverter has a certain overload capability, but if it is operated for a long time, there may be an overcurrent or overload alarm. It is recommended to set the inverter parameter P80 to the motor power, and see if the output current can be lowered. At the same time, the inverter parameter P9 is used for electronic overcurrent protection. Generally, the rated current of the motor is used to protect the motor, so it is related to the alarm of E.THM. The overload setting of the inverter is useless. The Mitsubishi F700 inverter has its own rated current value and can be changed without parameters. Therefore, it is very troublesome to report the overload. It is recommended that the customer should fully consider the rated current of the motor when selecting the inverter. And power two factors.
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