E6580516
DC
injection braking will start when the inverter stop command is issued and the output frequency is less
than
ldbF
I.
<<
Explanation of nonnal
DC injection braking >>
ldbSL
I 0 :Normal
Output
frequency
[Hz]
ldbF I
0
0
.
---~
....................
---
.
G)When
Id
b F
I.
IF
- E
,-,
I>
reference frequency : DC injection braking is executed.
®When
ldbF
I>
reference frequency
>IF
- E
,-,I:
Motor runs at the commaneded frequency.
When
Id b F
I.
IF
- E
,-,
I>
reference frequency : DC injection braking is executed.
Note
1)
The inverter stop command includes when the reference frequency becomes
OHz,
or when the
ouput frequency becomes
less than
IF
- E
,-,
I .
in
addition to the run/stop command.
@When a run command
is
issued during DC injection braking : DC injection braking is terminated, and
the motor starts running.
<<
Explanation of DC injection
braking priority
>>
ldb
SL
I : : Priority
ldbSL
I 0 : Normal
I
db
SL
I : 0
Output
frequency
....._
__
-;._~---.
[Hz]
I dbl: I
ldbF I
0
Reference
frequency
!@
ldbF I
IF-EI")
I
0
. .
-
--
------·--------1>~--~----------~-------·1-~
-
--+------
--------s~
--l-----------+-------
--:-=·
I I I :
CLOSED
I
R-CC
OPEN
"'"·
------...tl..i,,,,,__
_____
.._
____
_
Time[S]
@During normal forward/reverse run
(Id
b
SL
I set to
[I
),
DC injection braking is not executed, as the
command
is
not regarded as an inverter stop command.
@When a reverse run (forward run) command
is
issued during a forward run (reverse run): DC injection braking
starts when
ldbF
I>
reference frequency during deceleration.
@When a run command is issued during
DC
injection braking: DC injection braking has priority.
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