Parameter Description VD520 Series Inverter User Manual
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A1-08
SVC Optimize Mode
Selection
0: Not optimize
1: Optimize 1
2: Optimize 2
1
○
Optimize mode 1: used when have higher torque control linearity requirements.
Optimize mode 2: used when have high speed stability requirement.
A1-09
Dead Zone Time
Adjustment
100%~200%
150%
○
Aimed at 1140V voltage level setting.
Adjustment this value can improve the effective utilization of voltage, adjustment is too small easy to
cause system unstable.
Don't suggest the user to change.
A1-10
Droop Control
0.00Hz~10.00Hz
0.00Hz
○
This function is commonly used for load distribution when multi motors are by drive the same load.
Droop control refers to with the increase of load, make the inverter output frequency drops, so when
multi motors drive the same load, the motor output frequency of the load drop more, thus can reduce
the load of the motor, realize the load distribution of multi motors.
This parameter refers to the frequency inverter in the rated output load, the decline in value of the
output frequency.
A1-11
Cooling Fan Control
0: Fan operation in runtime
1: Fan is always running
0
○
Used to select the action mode of cooling fan, selection for 0, the fan running when the inverter in
running state or if the radiator temperature is higher than 40 degrees in stop state, and doesn't work
when radiator less than 40 degrees in stop state.
When selection for 1, the fan operation after power on.
A1-12
Speed Identification
Filter Depth
0~8
4
◎
A1-13
Low Frequency Carrier
Limit Mode
0: Limit mode 1
1: Limit mode 2
2: Not Limit
0
○
To limit the carrier frequency when low frequency.
A2, 3, 4 Motor 2 Parameter Function Group
VD520 can switch between the two motors run, two electrical motor nameplate parameters can be set
respectively, can choose for motor parameter tuning, can respectively, V/F control and vector control,
encoder related parameters can be set respectively, can be set separately with the V/F control or
vector control performance related parameters.
Specific parameter regulation refer to the motor 1 related parameters.
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