Chapter 4 Parameters｜VFD-EL-W
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Example 2:
Assume that the motor swivel table rotates at 1.5 Hz, and Pr.01.22 = 10 Hz [Simple Positioning
Stop Frequency 2], and Pr.01.30 = 10 sec. [Simple Positioning Stop Delay Time 2], then the
deceleration time from 60 Hz to 0 Hz is 40 seconds.
The delay time at stop for 1.5 Hz is 1.5 second; the deceleration time from 1.5 Hz to 0 Hz is 1
second.
After executing the stop command, Simple Positioning Stop activates, its rotation speed is n =
120 × 1.5 / 4 (revolution / minute) = 1.5/2(revolution / second)
The number of revolution of the swivel table = (1.5/2 × (1.5 + 2.5)) ÷ 2 = 1.5 (revolutions)
Therefore, the motor’s operation distance after executing the stop command = number of
revolutions × circumference = 1.5 × 2 πr. It also means that the swivel table stops after running
1.5 revolutions.
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