Chapter 5 Function parameter
93
Ch
ap
ter 5
F7.26
Frequency detection value
(FDT2)
0.00Hz~F0.19(maximum frequency) 50.00Hz
☆
F7.27
Frequency detection hysteresis
value (FDT2)
0.0%~100.0%(FDT2 level)
5.0%
☆
The frequency detection function is same as FDT1 exactly, please refer to the instructions of
FDT1 or function codes F7.23, F7.24.
F7.28
Random arrivals frequency
detection value 1
0.00Hz to F0.19 (maximum
frequency)
50.00Hz
☆
F7.29
Random arrivals frequency
detection width 1
0.00% to 100.0% (maximum
frequency)
0.0%
☆
F7.30
Random arrivals frequency
detection value 2
0.00Hz to F0.19 (maximum
frequency)
50.00Hz
☆
F7.31
Random arrivals frequency
detection width 2
0.00% to 100.0% (maximum
frequency)
0.0%
☆
When the inverter's output frequency randomly reaches the range of the detected
value(positive or negative), the multi-function DO will output ON signal.
PI500 provides two groups of parameter to set frequency value and frequency detection
range. The above figure is the schematic diagram of the function.
Random arrivals
frequency
Time(t)
Frequency detection range
Running frequency
ON
OFF
ON
OFF
Random arrivals
frequency
detection signal
DO or relay
OFF
Frequency detection range
Diagram 5-24:Schematic diagram of random arrivals frequency detection
F7.32 Zero current detection level
0.0%~300.0%( rated motor
current)
5.0%
☆
F7.33 Zero current detection delay time 0.01s~360.00s
0.10s
☆
Zero current
detection level
F7.32
Time/t
Output current
Zero current detection delay time F7.33
Time/t
Zero current
detection signal
ON
Diagram 5-25:Schematic diagram of zero current detection
When the inverter's output current is less than or equal to zero current detection level and
lasts for longer than the delay time of zero-current detection, the inverter's multifunction DO will
output ON signal. The figure is the schematic diagram of zero current detection.
F7.34
Overrun value of output
current
0.0% (not detected)
0.1%~300.0%(rated motor current)
200.0%
☆
F7.35 Output Current overrun
0.01s~360.00s
0.00s
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