VB5N series inverter
74
Close-loop function selection
0: Close-loop control is disabled
1: PI close-loop control is enabled
Close-loop setting channel
0: Digital setting
1: VI (0~10V) voltage setting
2: CI analog setting. 0~10V voltage or 4~20mA current are available. For speed close-loop, 10V corresponds to the syn-
chronized speed of the motor’s max output frequency.
Feedback channel selection
0: VI (0~10V) voltage input
1: CI analog input
2: VI +CI
3: VI - CI
4: Min{VI, CI}
5: Max{VI, CI}
External setting channel and feedback channel have noise. To filter the channel by setting the filter time P7.03 and P7.04. the
longer the time, the stronger the noise immunity ability. But the reponse will be slow.
If P7.01=0, the value of P7.05 will be considered as the setting value of close-loop control system. Therefore, modify the value
of P7.05 to change the system setting value when controlling the close-loop system by operate panel or serial port.
Range: 0.0~Max setting value
Feedback value corresponding to min setting
Range: min reference~100.0 (%)
Feedback value corresponding to max setting
P7.06~P7.09 defines the relationship curve of analog close-loop setting value and expected feedback. See Fig4-36.
Fig. 4-36 setting and feedback curve
Feedback value of max setting
(1)positive control feedback
(2)negative control feedback
Feedback value of min setting
Feedback value of max setting
Feedback value of min setting