Omron SYSDRIVE 3G3JV-AB001, User Manual

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6-5
6-2 DC Injection Braking Function
The DC injection braking function applies DC on the induction motor for
braking control.
Startup DC Injection Braking:
This braking is used for stopping and starting the motor rotating by inertia
with no regenerative processing.
DC Injection Braking to Stop:
Adjust the stop DC injection braking time if the motor rotating does not
decelerate to a stop in normal operation due to inertia from a heavy load.
By increasing the DC injection braking time or DC injection braking current,
the time required for stopping the motor is reduced.
n52
DC Injection Braking Current Changes during
operation No
Setting
range 0 to 100 (%) Unit of
setting 1% Default setting 50
n53 DC Injection Braking-to-stop Time Changes during
operation No
Setting
range 0.0 to 25.5 (s) Unit of
setting 0.1 s Default setting 0.5
n54
Startup DC Injection Braking Time Changes during
operation No
Setting
range 0.0 to 25.5 (s) Unit of
setting 0.1 s Default setting 0.0
•
Set the DC injection braking current as percentage based on the rated current of the
Inverter as 100%.
•
After the startup DC injection braking time is set, the Inverter starts up at minimum fre-
quency on completion of the startup DC injection braking control of the Inverter.
•
After the speed is reduced, the Inverter is switched to DC injection braking at minimum
output frequency.
DC Injection Braking Control
Output
frequency
Minimum
output
frequency
(n14)
n54
Startup DC injection
braking time n53
DC injection
braking-to-stop time
Time
Advanced Operation
Chapter 6