Delta MS300 Series User Manual page 299

Chapter 12 Descriptions of Parameter SettingsMS300
 Using an S-curve gives the smoothest transition between speed changes. The acceleration and
deceleration curve adjusts the acceleration and deceleration S-curve. When enabled, the drive
produces a different acceleration and deceleration curve according to the acceleration and
deceleration time.
 The S-curve function is invalid when you set the acceleration and deceleration time to 0.
 When Pr.01-12, 01-14, 01-16, 01-18 ≥ Pr.01-24 and Pr.01-25,
the actual acceleration time = Pr.01-12, 01-14, 01-16, 01-18 + (Pr.01-24 + Pr.01-25) ÷ 2.
 When Pr.01-13, 01-15, 01-17, 01-19 ≥ Pr.01-26 and Pr.01-27,
the actual deceleration time = Pr.01-13, 01-15, 01-17, 01-19 + (Pr.01-26 + Pr.01-27) ÷ 2.
01-28
Skip Frequency 1 (Upper Limit)
01-29
Skip Frequency 1 (Lower Limit)
01-30 Skip Frequency 2 (Upper Limit)
01-31
Skip Frequency 2 (Lower Limit)
01-32
Skip Frequency 3 (Upper Limit)
01-33
Skip Frequency 3 (Lower Limit)
Settings
 Sets the AC motor drive's skip frequency. The drive's frequency setting skips these frequency
ranges. However, the frequency output is continuous. There are no limits for these six
parameters and you can combine them. Pr.01-28 does not need to be greater than Pr.01-29;
Pr.01-30 does not need to be greater than Pr.01-31; Pr.01-32 does not need to be greater than
Pr.01-33. You can set Pr.01-28–01-33 as you required. There is no size distinction among these
six parameters.
 These parameters set the skip frequency ranges for the AC motor drive. You can use this
function to avoid frequencies that cause mechanical resonance. The skip frequencies are useful
when a motor has resonance vibration at a specific frequency bandwidth. Skipping this
frequency avoids the vibration. There are three frequency skip zones available.
 You can set the Frequency command (F) within the range of skip frequencies. Then the output
frequency (H) is limited to the lower limit of skip frequency ranges.
 During acceleration and deceleration, the output frequency still passes through the skip
frequency ranges.
0.00–599.00 Hz
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Default: 0.00