Omron SYSDRIVE 3G3JV

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 regen-
erative 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 Control Current Changes during
operation
No
Setting
range
0 to 100 (%) Unit of
setting
1% Default setting 50
n53
Interruption DC Control 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 Control 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 frequency 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 frequen-
cy.
DC Injection Braking Control
Output
frequency
Minimum
output
frequency
(n14)
n54
Startup DC control time
n53
Interruption DC control time
Time
Advanced Operation Chapter 6