Delta C2000 Series User Manual page 419

Chapter 12 Description of Parameter SettingsC2000
 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 the 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 50Hz and the frequency setting is 60Hz, the
maximum output frequency is 50 Hz.
 If the output frequency lower limit setting is 10Hz and the minimum operation frequency setting
(Pr. 01-07) is 1.5 Hz, the drive operates at 10Hz when the frequency command is higher 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 60Hz and the frequency setting is also 60Hz, 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

JOG Acceleration Time

12.1-01-6