EM330D User Manual
A Special Purpose Inverter for Hoisting
77
0
0
Time(S)
Output Frequency(Hz)
Motor Speed
Brake Voltage/Current
Brake Time
0
T
t
Time(S)
Time(S)
Time
（
S
）
Output Frequency(Hz)
DC Brake Start Frequency
DC Brake Waiting Time
t
Figure 7-8 DC Brake Process at Start
Figure 7-9 DC Brake Process at Stop
No.
Function
Range
Unit
Default
Type
F3-28
Lower Limit Frequency
Control
0:Run as per lower limit frequency
1:Run at zero speed after lower limit
frequency running time is up
0
〇
F3-29
Lower Limit Frequency
Running Time
0.00
～
600.00
S
60.00
〇
F3-28=0
When the output frequency is lower than the lower limit frequency, the inverter
will always run as per lower limit frequency. The lower limit frequency is set by F0-18.
F3-28=1
If the output frequency< lower limit frequency, inverter will run as per lower limit
frequency. After the running time of lower limit frequency reaches the setting value of
F3-29, inverter will run at zero speed.
See Figure 7-10 for lower limit frequency control.
Output Frequency(Hz)
Time(S)
Lower Limit Frequency
Running Time of
Lower Limit Frequency
Output Frequency(Hz)
Lower Limit
Frequency
Time(S)
F3-28=0
F3-28=1
Figure 7-10 Lower Limit Frequency Control
