Alpha 6000 - DC Injection Braking

Chapter 5 Parameter Introductions
91
P1.11 DC injection braking current at
stop
Range: This value depends on the inverter
model【0.0%】
P1.12 DC injection braking time at stop
Range: 0.0~30.0s【0.0s】
Note:
 DC injection braking is injecting DC current to motor, to let it stop quickly, and
keep the spindle of motor in standstill until finished DC injection braking
Output Freq.
DC injection braking
frequency at stop
Output Voltage
（
effective value
）
Braking
Energy
Time
Running
command
Waiting time for DC
injection braking at
stop
DC injection
braking time
Fig. 5-1-6 DC injection braking
 DC injection braking frequency at stop is the frequency at which DC injection
braking action begins when the inverter in Dec-to-stop process. In the process of
constant rate deceleration, if the output frequency is at or below the “DC injection
braking frequency at stop, the DC injection braking function will startup.
 DC injection braking current at stop is a relative percentage of inverter rated
current. The DC injection braking function disables when the braking time is 0.0s.
The setting range of Type G is 0.0~100.0%, and Type P is 0.0~80.0%.
 DC injection braking time is the DC injection braking holding time. This time
cannot be set too long; otherwise, it will cause the inverter overheating. When the
DC injection braking time is set to zero, the DC injection braking function disables.
 Tips:
This function will start up after inverter receives stop command. Usually, it is used to
improve the stop precision and not for deceleration braking in common running. If
faster stop is required, braking energy regeneration unit should be fitted, or the inverter
that has the function of brake energy regeneration should be selected.