135
3. When it is used independently in case of no switch of motor 1, the first acceleration/deceleration time is
determined by P02.13 (acceleration time) and P02.14 (deceleration time). When it is used independently in
case of no switch of motor 2, the first acceleration/deceleration time is determined by P11.04 (acceleration
time) and P11.05 (deceleration time).
The maximum output frequency is the allowable maximum output frequency of the drive, as Fmax shown
in Fig. 6-9.
The upper limit frequency is the allowable maximum output running frequency set by the user, as FH
shown in Fig. 6-9.
The frequency of lower limit is the allowable minimum running frequency set by the user, as FL
shown in
Fig. 6-9.
F
b
in Fig. 6-9 is the basic running frequency, which is defined as the minimum value of corresponding
output frequency when the drive output voltage reaches the maximum value under the A/F mode.
F
L
F
H
F
b
F
max
V
max
Output
voltage
Output
frequency
Fig. 6-9 Diagram for the definition of limit frequency parameters
Note
1. The maximum output frequency, upper limit frequency and lower limit frequency shall be set carefully
according to the parameters on the nameplate of the controlled motor and the demands of the operation
conditions.
2. The limit range of the upper limit frequency and lower limit frequency is disabled for the JOG operation and
automatic auto-tuning of the motor.
3. Besides the limit range of the upper limit frequency and lower limit frequency, the output frequency of the
drive in running is also limited by the setting values of other parameters, such as the start frequency, starting
frequency for stop DC braking, skip frequency, etc.
4. The relationship among the maximum output frequency, upper limit frequency and lower limit frequency is
as shown in the above Fig. 6-9. Please pay attention to the size and order in setting.
5. The upper/lower limit frequency is used to limit the value of the actual output frequency to the motor. If the
set frequency is higher than the upper limit frequency, it will run with the upper limit frequency; if the set
Lower limit frequency
0.00~P02.16
0.00
P02.17
Upper limit frequency
P02.17~P02.15 (50.00)
P02.16
Maximum output frequency
max{50,P02.16}~3000.00(50.00)
P02.15
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