How To Set Acceleration And Deceleration Time In Delta VFD

In this article, we are going to learn about how To Set Acceleration And Deceleration Time In Delta VFD. There are some important Parameters used in various Applications. Acceleration time means the time taking by motor to reach the maximum speed or the commanded speed from the zero. For example, the motor is running in 15 hertz frequency, and it is given command of 50 hertz. So the time taken by the motor to reach from 15 hertz to 50 hertz is acceleration time of the motor.

When it raise to stop, then the time taken by the motor from 50 hertz frequency to zero hertz frequency, that is the deceleration time. So this is the acceleration sign wave here, that is actually the curve. Time taken by the motor to reach from zero to maximum is acceleration time and time taken by the motor from maximum frequency to zero is deceleration time. Now we have to learn in this article is, how we can enter this setting of acceleration and deceleration timing in the Delta VFD.

How to Set Acc. & Dec. Time in Delta VFD

For setting the parameters of acceleration and deceleration timing in Delta VFD, we have to work on parameter 10 and parameter 12. Please check the Delta VFD Manual for better knowledge of parameters. So Parameter 10 says, acceleration time 1 and deceleration time is also 1. This is set by default. When you will run the motor in this speed of frequency, the motor takes some time to reach to it's maximum speed. And, when you will stop this motor, the motor will take some time to reach to the lowest speed, which is called deceleration time of the motor.

For showing you a response, please set the parameter number 1 in minimum freuqency (which is 0.1) and test your motor's speed. Also, set parameter number 11 to minimum value and then run the motor. You will see the motor will start immediately and stop directly in the short period of time.

How to Stop Motor By Delta VFD

There are two types of stop methods we have in delta vfd. First is ramp stop and second is coast stop method. Below is the graph of both methods. The ramp stop method will stop the motor according to the deceleration time that is set in the parameter (if minimum, it will stop immediately). The coast method will stop motor with its inertia. That's means slowly. The parameter of choosing the sopt method is pr-02. By selecting "1", your motor will stop by ramp stop method.

I hope this is helpful and you can understand better by watching this practical demonstration video tutorial below.