Shenzhen Hpmont Technology Co., Ltd
Chapter 6 Function Introduction
HD20 Series Inverters User Manual
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97
―
Zero-frequency operation (F19.10
－
F19.11)
Refer to below figure for the details.
Fcmd1 = Final setting frequency 1
Fcmd2 = Final setting frequency 2
Fstart = Start DWELL frequency (parameter
F02.02)
fstart = Actual start DWELL frequency
Flow = Lower limit frequency (parameter
F00.09)
H = Target frequency
Fmin = Zero-frequency threshold (parameter
F19.10)
No.
Name Description
Range
【
factory setting
】
F19.10
Zero-frequency threshold
0.00
－
upper limit
【
1.00Hz
】
F19.11
Action selection at setting frequency is lower than
zero-frequency threshold
0
－
3
【
0
】
0: Run according to frequency command.
1: Holding stop, no output.
2: Run according to zero-frequency threshold.
3: Run according to zero-frequency.
Fcmd>Fmin
Fcmd<Fmin
Fstart>Fmin
fstart=Fstart
Flow=0
fstart=Fmin
Flow=0
Fcmd>Flow
Fcmd>Fmin
H=Fcmd
H=Fcmd
H=Flow
H=Fcmd
YES
YES
NO
Based on parameter F19.11
NO
NO
YES
YES
F19.11
NO
YES
NO
NO
NO
YES
YES
Fcmd
Fstart
Fmin
Time
Hz
Fcmd
Fstart
Fmin
Time
Hz
Fcmd1
Flow
Fmin
Time
Hz
Fcmd2
F00.06
H=Fcmd1
Fcmd>Flow and
Fcmd1>Fmin
Based on F19.11
Fcmd2>Flow and
Fcmd2<Fmin
Fcmd1
Flow
Fmin
Time
Hz
Fcmd2
F00.06
H=Flow
Flow>Fcmd1
>Fmin
Based on
F19.11
Fmin>Fcmd2
Judgement program at instantaneous start
Based on
F19.11
Based on
Operating judgement program
after starting
6