V5 series inverter
76
Fig.4-33.
In actual applications, if the motor speed increases with the preset value increasing, it is positive feature; if the motor speed
decreases with the preset value increasing, it is negative features.
The two close-loop features can be set via P7.14, as shown in Fig4-35.
Fig.4-34 Preset and Fig.4-35 Close-loop adjustment
expected feedback feature diagram
After confirming the system, the procedure of setting close-loop parameters is shown below:
(1) Confirm the close-loop setting and feedback channel (P7.01, P7.02).
(2) The relationship between close-loop setting and feedback value (P7.06~P7.09).
(3) Confirm the close-loop adjustment features (P7.14=1 negative function; 0 is positive function), as shown in Fig4-35.
(4) Set the close-loop preset frequency (P7.16~ P7.17).
(5) Set close-loop filter time, sampling cycle, difference limit and gain coefficient (P7.03, P7.04, P7.12, P7.13).
P7.00 Close-loop function selection Range: 0, 1 0
0: Close-loop control is disabled
1: PI close-loop control is enabled
P7.01 Close-loop setting channel Range: 0, 1, 2 1
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.
P7.02 Feedback channel selection Range: 0~6 1
0: VI (0~10V) voltage input
1: CI analog input
2: VI +CI
3: VI - CI
4: Min｛VI, CI｝
5: Max｛VI, CI｝
P7.03 Setting channel filter Range: 0.01~50.00s 0.50s
P7.04 Feedback channel filter Range: 0.01~50.00s 0.50s
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.
P7.05 Digital setting Range: 0.00~10.00V 0.00V
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.
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