Delta VFD300C43S-HS User Manual page 291

drive output frequency may exceed frequency command but is still limited by this setting.
 Related parameters: Pr. 01-00 Maximum Operation Frequency and Pr. 01-11 Output Frequency
Lower Limit
 The lower output frequency limits the minimum output frequency of drive. When the drive
frequency command or feedback control frequency is lower than this setting, the lower limit of the
frequency limits the drive output frequency.
 When the drive starts, it operates from the minimum output frequency (Pr. 01-07) and accelerates
to the setting frequency. It is not limited by the lower output frequency settings.
 Use the output frequency upper and lower limit settings to prevent operator misuse, overheating
caused by operating at a too low frequency, or damage caused by excessive speed.
 If the output frequency upper limit setting is 50 Hz and the frequency setting is 60 Hz, the
maximum output frequency is 50 Hz.
 If the output frequency lower limit setting is 10 Hz and the minimum operation frequency setting
(Pr. 01-07) is 1.5 Hz, the drive operates at 10 Hz when the frequency command is greater than Pr.
01-07 and less than 10 Hz. If the frequency command is less than Pr. 01-07, the drive stays in
ready status with no output.
 If the frequency output upper limit is 60 Hz and the frequency setting is also 60 Hz, only the
frequency command is limited in 60 Hz. The actual frequency output may exceed 60 Hz if the
drive starts the slip compensation function.
Acceleration Time 1

Deceleration Time 1

Acceleration Time 2

Deceleration Time 2

Acceleration Time 3

Deceleration Time 3

Acceleration Time 4

Deceleration Time 4

Chapter 12 Description of Parameter SettingsC2000-HS
12.1-01-5