Using The Dc Injection Brake - YASKAWA FSDrive-MV1S Instructions Manual

Using the DC Injection Brake

Set constant b2-03 to apply the DC injection braking current to the motor while it is coasting to a stop, to stop
the motor and then restart it.
Set b2-03 to 0 to disable the DC injection brake at start.
Set the DC injection brake current using b2-02. DC injection braking is used at startup for flux vector control
with the current set in E2-03 (Motor no-load current).
Related Constants
Constant
Number
b2-02
b2-03
Inputting the DC Injection Brake Command from Control Circuit Terminals
If you set a multi-function contact input terminal (H1-
apply the DC injection brake to the motor by turning on the terminal for which the DC injection brake com-
mand has been set when the Inverter is being stopped. DC injection braking is used at startup for flux vector
control.
The time chart for the DC injection brake is shown below.
DC injection brake command
Output frequency
-8
6
Name
Description
Display
DC injection braking
Sets the DC injection braking
current
current as a percentage of the
Inverter rated current.
DCInj Current
DC injection braking Used to set the time to perform
time at start DC injection braking at start in
units of 1 second.
Used to stop coasting motor
and restart it. When the set
DCInj Time@Start
value is 0, DC injection braking
at start is not performed.
FRUN
DC injection brake
(DC injection braking at
startup is used for flux
vector control.)
If you input the DC injection brake command from an external terminal, or if the Run Com-
mand and jog command are input, the DC injection brake will be disabled, and operation will
resume.
Fig 6.6 DC Injection Brake Time Chart
Change
Setting Factory
during
Range Setting
Operation
0 to
50%
100
0.00
0.00
to
s
10.00
) to 60 (DC injection brake command), you can
DC injection brake
b2-01
E1-09
(DC injection braking at
startup is used for flux
Control
Methods
MEMOBUS
Open-
Register
Flux
loop
Vector
Vector
No A No 1B1H
No A A 1B2H
vector control.)