User Manual
EM303B General Purpose Inverter
109
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 7-10 DC Brake Process at Start
Figure 7-11 DC Brake Process at Stop
No.
Function
Range
Unit Default Type
F3-28
Lower Limit Frequency
Control
0: Run as per the 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
If output frequency< 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 output frequency< lower limit frequency, the inverter runs per lower limit
frequency first, and then runs at zero speed after the lower limit frequency running time
reaches the setting value of F3-29. The function is applicable to process PID control like
constant pressure water supply, air compressor, and etc.
See Figure 7-12 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