Delta VFD007FP4EA-41 - Page 226

Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-01-5

Output Frequency Lower Limit
Factory Setting: 0.00
Settings 0.0~599.00Hz
 The upper/lower output frequency setting is used to limit the actual output frequency. If the
frequency setting is higher than the upper limit (01-10), it will run with the upper limit frequency. If
output frequency lower than output frequency lower limit (01-11) and frequency setting is higher
than min. frequency (01-07), it will run with lower limit frequency. The upper limit frequency should
be set to be higher than the lower limit frequency. Pr.01-10 setting must be ≥ Pr.01-11 setting.
 Upper output frequency will limit the max. Output frequency of drive. If frequency setting is higher
than Pr.01-10, the output frequency will be limited by Pr.01-10 setting.
 When the drive starts the function of slip compensation (Pr.07-27) or PID feedback control, drive
output frequency may exceed frequency command but still be limited by this setting.
 Related parameters: Pr.01-00 Max. Operation Frequency and Pr.01-11 Output Frequency Lower
Limit
Pr01-07
V
o
l
t
a
g
e
Frequency
Min output.
frequency
(Fmin)
Pr01-01
Motor rated
frequency
(Fbas e)
Pr01-00
Max. operation
frequ ency
Pr01-04
Mid point voltage 1-
Pr01-02
Motor rated voltage
(Vbase)
Min output voltage.
setting (Vmin)
Pr01-08
Pr01-05
Mid point-
frequency 2
Pr01-06
Mid point voltage 2-
Pr01-03
Mid point-
freque ncy 1
Pr01-11
Lower limit of output frequency
Pr01-10
Upper limit of output frequency
 Lower output frequency will limit the min. output frequency of drive. When drive frequency
command or feedback control frequency is lower than this setting, drive output frequency will limit
by the lower limit of frequency.
 When the drive starts, it will operate from min. output frequency (Pr.01-07) and accelerate to the
setting frequency. It won’t limit by lower output frequency setting.
 The setting of output frequency upper/lower limit is used to prevent personal misoperation,
overheat due to too low operation frequency or damage due to too high speed.
 If the output frequency upper limit setting is 50Hz and frequency setting is 60Hz, max. output
frequency will be 50Hz.
 If the output frequency lower limit setting is 10Hz and min. operation frequency setting (Pr.01-07)