What Are You to Consider when Choosing Frequency Variable Drives
It is important to know that a variable frequency drive is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor, therefore can also be described as a variable speed drive. It is important to know that there are several factors to consider when choosing a variable frequency device for an electric motor.
Some of the things one needs to consider when choosing a variable frequency drive.
It is important to know that altitude affects cooling thus is a factor to consider since when it increases the surrounding air becomes less dense and therefore this decrease causes the air density to decrease the cooling properties. It is important to note that most of them operate at 100%. It is important to know that at higher altitudes the Frequency Drive must compensate for a decrease in cooling for the air to become less dense.
Another factor to consider when choosing a variable frequency device is temperature. Temperature in the AC drives is an important factor to consider because it generates a significant amount of heat and can cause internal temperature of an enclosure to exceed the temperature rating of the Frequency drive this may require a ventilation or cooling to control the temperature.
Another factor to consider when choosing a variable frequency drive is overload. Therefore, overload is the ability of a frequency drive to handle all conditions. One should note that overload is an important factor to consider to be sure if the variable frequency drive can handle an overload of conditions. An overload can be greater than 150% or longer than 60 seconds. an overload factor is essential because it starts and stops depending on the frequency.
It is important to note that the application type of drive is crucial to consider when choosing a frequency variable drive. There are two types of frequency variable drive. It is important to know that there are two types of frequency variable drives. One must be aware of the two types of applications which include constant torque and variable torque which each of them had its ratings. It is important to know that the application type because the frequency variable drives are organized accordingly as per the two types mentioned above. The constant torque is most recommended when one person is not sure of what to buy between the two application types thus when choosing a variable frequency drive the security can be directed to the constant drive as the most commonly used . The variable torque application type is used for the conveyors and the general machine control.