Description of Function Codes
MD380 User Manual
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Pulse setting specication: voltage range 9–30 V, frequency range 0–100 kHz
• 5: Multi-reference
If the voltage source is multi-reference, parameters in group F4 and FC must be set to
determine the corresponding relationship between setting signal and setting voltage.
100.0% of the multi-reference setting in group FC corresponds to the rated motor
voltage.
• 6: Simple PLC
If the voltage source is simple PLC mode, parameters in group FC must be set to
determine the setting output voltage.
• 7: PID
The output voltage is generated based on PID closed loop. For details, see the
description of PID in group FA.
• 8: Communication setting
The output voltage is set by the host computer by means of communication.
The voltage source for V/F separation is set in the same way as the frequency source. For
details, see F0-03. 100.0% of the setting in each mode corresponds to the rated motor
voltage. If the corresponding value is negative, its absolute value is used.
Function Code Parameter Name Setting Range Default
F3-15 Voltage rise time of V/F separation 0.0–1000.0s 0.0s
F3-16 Voltage decline time of V/F separation 0.0–1000.0s 0.0s
F3-15 indicates the time required for the output voltage to rise from 0 V to the rated motor
voltage shown as t1 in the following gure.
F3-16 indicates the time required for the output voltage to decline from the rated motor
voltage to 0 V, shown as t2 in the following gure.
Figure 6-6 Voltage of V/F separation
t1 t2
Actual voltage
rising time
Set voltage rising time
Output voltage
Rated motor voltage
Target voltage
Set voltage declining time
Actual voltage
declining time
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