Delta MH300 Series - Page 362

Chapter 12 Description of Parameter Settings
MH300
12.1-01-9
 Sets a slow start when the drive begins to accelerate at the start. The acceleration and
deceleration curve adjust the S-curve acceleration and deceleration according to the parameter
value. When you enable this function, the drive has a different acceleration and deceleration
curve based on the acceleration and deceleration time.
 The S-curve function is disabled 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)
Default: 0.00
Settings 0.00–599.00 Hz
 Sets the AC 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. Pr.01-28–
01-33 can be set as 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.
 When accelerating and decelerating, the output frequency still passes through the skip frequency
ranges.