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Parameter
Number
DC
Injection
Braking
b2-02
Current
DCInj
Current
DC
Injection
Braking
Time/DC
Excitation
b2-03
Time at
Start
DCInj
Time@Start
DC
Injection
Braking
Time at
Stop
b2-04
DCInj
Time@Stop
* The setting range is 0 or 1 for flux vector control and open-loop vector control 2.
Deceleration to Stop
If the stop command is input (i.e., the run command is turned OFF) when b1-03 is set to 0, the motor deceler-
ates to a stop according to the deceleration time that has been set. (Factory setting: C1-02 (Deceleration Time
1))
If the output frequency when decelerating to a stop falls below b2-01, the DC injection brake will be applied
using the DC current set in b2-02 only for the time set in b2-04.
For deceleration time settings, refer to page 6-16 Setting Acceleration and Deceleration Times.
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Name
Description
Display
Sets the DC injection braking current as a
percentage of the Drive rated current.
Note: The DC excitation current is
determined by the setting in E2-03 when
operating in flux loop vector control
mode
Sets the time of DC injection braking at
start in units of 0.01 seconds.
Sets the time length of DC injection
braking at stop in units of 0.01
seconds.
1: When b1-03 = 2, actual DC Injection
time is calculated as follows: (b2-04) x
10 x (OutputFreq) / (E1-04)
2: When b1-03 = 0, this parameter
determines the amount of time DC
Injection is applied to the motor at the
end of the decel ramp.
3: This should be set to a minimum of
0.50 seconds when using HSB. This
will activate DC injection during the
final portion of HSB and help ensure
that the motor stops completely.
-ADV-
C1-01=
Fig 6.11 Deceleration to Stop
Setting
Factory
Range
Setting
0
to
50%
100
0.00
to
0.00sec
10.00
0.00
to
0.50sec
10.00
Accel Time 1
0
010.0Sec
Control Methods
Change
Open-
V/f
during
Loop
Flux
V/f
with
Operation
Vector
Vector
PG
1
No
A
A
A
No
No
A
A
A
A
No
A
A
A
A
Open
Loop
Vector
2
No
A
A
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Table of Contents
Troubleshooting
