Xinje VH6 Series - Group P6 Vector Parameters

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If it is found that the actual deceleration time of the motor is much longer than the deceleration time under
V/F control mode, the following measures can be taken:
(1) If there is no braking resistor or energy feedback unit, the set value of P5-16 overexcitation gain can be
increased by ± 20 each time. If the increase of overexcitation gain causes motor oscillation overvoltage fault,
please reduce the setting value of overvoltage stall suppression voltage gain P5-26.
(3) If the braking resistor or energy feedback unit is added, and the input voltage level of the inverter is
323~437V, adjust the P7-53 braking starting voltage setting value to 690V, and set P5-16 (overexcitation gain)
to 0; Use shutdown DC braking, and the recommended setting values are: P4-23 (shutdown DC braking starting
frequency) =0.5Hz, P4-25 (shutdown DC braking current percentage) = 50%, P4-26 (shutdown DC braking
time)= 1s.
Note: when using the brake resistor: P5-16 (over excitation gain) is set to 0, otherwise it is easy to cause
excessive current in operation; P5-24 (overvoltage stall enable) is set to 0, otherwise the deceleration time may
be too long.
4-2-7. Group P6 Vector parameters
Parameter
Name
Range
P6-00
Speed loop proportional gain 1
1~100
P6-01
Speed loop integral time 1
0.01s~10.00s
P6-02
Speed loop proportional gain 2
1~100
P6-03
Speed loop integral time 2
0.01s~10.00s
P6-04
Switching frequency 1
0.00~P6-05
P6-05
Switching frequency 2
P6-04~max output frequency P0-13
Different PI parameters of speed loop can be selected when the inverter operates at different frequencies. When
the operating frequency is less than the switching frequency 1 (P6-04), the PI regulation parameters of the speed
loop are P6-00 and P6-01. When the operating frequency is greater than the switching frequency 2, the PI
regulation parameters of the speed loop are P6-02 and P6-03. The PI parameters of speed loop between
switching frequency 1 and switching frequency 2 are linear switching of two groups of PI parameters, as shown
in the figure below:
By setting the proportional coefficient and integral time of the speed regulator, the speed dynamic response
characteristics of the vector control can be adjusted.
Increasing the proportional gain and decreasing the integration time can accelerate the dynamic response of the
speed loop. Improper setting of PI parameters may lead to excessive speed overshoot. Even when the overshoot
falls back, overvoltage fault occurs.