Dc Injection Braking Function - Omron SYSDRIVE 3G3JV User Manual

Advanced Operation
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
Setting 0 to 100 (%)
range
n53
Interruption DC Control Time
Setting 0.0 to 25.5 (s)
range
n54
Startup DC Control Time
Setting 0.0 to 25.5 (s)
range
• 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)
Unit of
setting
Unit of
setting
Unit of
setting
n54
Startup DC control time
Changes during
operation
1% Default setting
Changes during
operation
0.1 s Default setting
Changes during
operation
0.1 s Default setting
n53
Interruption DC control time
Chapter 6
No
50
No
0.5
No
0.0
Time
6-5