YASKAWA Varispeed G7 Series Instruction Manual page 246

Name
Con-
stant
Display
Number
DC injec- Used to set the time to perform DC
tion brak- injection braking at start in units of 1
ing time at second.
b2-03 start Used to stop coasting motor and
restart it. When the set value is 0, DC
DCInj
injection braking at start is not per-
Time@Start
formed.
DC injec- Used to set the time to perform DC
tion brak- injection braking at stop in units of 1
ing time at second.
b2-04 stop Used to prevent coasting after the
Stop Command is input. When the set
DCInj
value is 0.00, DC injection braking at
Time@Stop
stop is not performed.
* 0 or 1 for flux vector control and open-loop vector 2 control.
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 decel-
erates 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 6-18 Setting Acceleration and Deceleration Times.
Run command
Output frequency
Setting
Description
Range
0.00
to
10.00
0.00
to
10.00
ON
OFF
Decelerates to stop at
deceleration time
Fig 6.13 Deceleration to Stop
Control Methods
Change
Open-
Factory during
V/f loop
Setting Opera-
V/f with Vec-
tion
PG tor
1
0.00 s No A A A
0.50 s No A A A
DC injection brake
DC injection brake time
when stopping (b2-04)
Stopping Methods
MEMO-
Open
BUS
Flux Loop
Regis-
Vec- Vec-
ter
tor tor
2
A A 18BH
A A 18CH
13
6-