YASKAWA Varispeed f7

5-12
DC Injection Braking: b2
User constants for injection braking are shown in the following table.
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
b2-01
Zero-speed
level (DC
injection
braking
starting fre-
quency)
Used to set the frequency
which starts DC injection
braking in units of Hz when
deceleration to stop is
selected.
When b2-01 is less than E1-
09, E1-09 is used to set the
starting frequency for the
DC injection braking.
In flux vector control, b2-01
is used to set the starting fre-
quency for the zero-speed
control.
0.0 to
10.0
0.5 Hz No A A A A 189H
6-17
6-144
b2-02
DC injec-
tion brak-
ing current
Sets the DC injection brak-
ing current as a percentage
of the Inverter rated current.
The DC injection braking
current in flux control is
affected by any change to the
setting of E2-03.
0 to
100
50% No A A A No 18AH
6-18
6-22
b2-03
DC injec-
tion brak-
ing time at
start
Used to set the time to per-
form DC injection braking at
start in units of 1 second.
Used to stop coasting motor
and restart it. When the set
value is 0, DC injection
braking at start is not per-
formed.
0.00
to
10.00
0.00 s No A A A A 18BH
6-18
6-22
b2-04
DC injec-
tion brak-
ing time at
stop
Used to set the time to per-
form DC injection braking at
stop (zero-speed control in
flux vector control) in units
of 1 second.
Used to prevent coasting
after the Stop Command is
input. When the set value is
0.00, DC injection braking at
stop is not performed.
0.00
to
10.00
0.50 s No A A A A 18CH 6-18
b2-08
Magnetic
flux com-
pensation
volume
Sets the magnetic flux com-
pensation as a percentage of
the no-load current.
0 to
1000
0% No No No A A 190H -