Parameter Description VD520 Series Inverter User Manual
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Start the dc braking, generally used to make the running motor restart after stop. Pre excitation is
used to make the asynchronous motor build magnetic field first then restart, improve the response
speed.
Start the dc braking is only valid for starting mode is direct startup. The inverter dc braking will
according to the first startup dc braking current setting, start running again after start the dc braking
time. If set dc braking time is 0, then directly start without dc braking. The greater the dc braking
current, the bigger the braking force.
If the starting mode is asynchronous motor pre-excitation start, the inverter according to the first set of
pre excitation current build magnetic field beforehand, start running again after the pre excitation time
setting. If set pre excitation time is 0, then directly start without dc braking.
Start dc braking current/pre excitation current, is relative to the percentage of the frequency inverter
rated current.
F1-05
Speed Tracking Mode
LED unit’s digit: tracking direction
selection
0: According to the actual test direction
1: According to the set frequency
direction
LED ten’s digit: zero speed excitation
selection
0: No exciting
1: Exciting
0x10
○
When the motor running frequency is very low, hardware detect the counter electromotive force is
very weak, the accuracy of the motor speed identification is reduced, and through the excitation, it
can get more accurate actual motor speed.
F1-06
Delay Time of Rotation
Speed Tracking
0ms~2000ms
500ms
○
Speed tracking startup mode, the frequency inverter receives the start signal, delay the time to start
speed tracking.
F1-07
Voltage Rise Rate of
Rotation Speed Tracking
0~1000
100
○
The greater the value is set, the faster the speed tracking, too much but easy to cause overvoltage
fault, etc; the smaller the value is set, the speed tracking time will be longer.
F1-08
Stop Mode
0: Decelerate to stop
1: Coast to stop
0
○
0: decelerate to stop
After stop command effective, inverter reduced the output frequency according to deceleration time,
frequency downtime after drop to zero.
1: Coast to stop
After stop command effective, inverter stop output immediately, the motor coast to stop according to
the mechanical inertia.
F1-03
Starting DC Braking
Current/ Pre-excitation
Current
0%~100%
0%
◎
F1-04
Starting DC Braking
Current/ Pre-excitation
Current
0.0s~100.0s
0.0s
◎