Description of Function Codes
MD380 User Manual
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Function Code Parameter Name Setting Range Default
F8-33
Any frequency reaching
detection amplitude 2
0.0%–100.0% (maximum
frequency)
0.0%
If the output frequency of the AC drive is within the positive and negative amplitudes of the
any frequency reaching detection value, the corresponding DO becomes ON.
The MD380 provides two groups of any frequency reaching detection parameters, including
frequency detection value and detection amplitude, as shown in the following gure.
Figure 6-21 Any frequency reaching detection
Running frequency
OFF
Any frequency reaching
detection signal
DO or relay
OFF OFF
ON ON
Time
Any frequency
reaching
Frequency reaching
detection amplitude
Frequency reaching
detection amplitude
Function Code Parameter Name Setting Range Default
F8-34 Zero current detection level
0.0%–300.0% (rated
motor current)
5.0%
F8-35 Zero current detection delay time 0.00–600.00s 0.10s
If the output current of the AC drive is equal to or less than the zero current detection level
and the duration exceeds the zero current detection delay time, the corresponding DO
becomes ON. The zero current detection is shown in the following gure.
Figure 6-22 Zero current detection
Output current
Zero current
detection level
F8-34
Zero current
detection signal
Time
Time
Zero current
detection delay time
F8-35
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