6-22
îš„Coast to Stop with Timer
If the Stop Command is input (i.e., the Run Command is turned OFF) when b1-03 is set to 3, the Inverter out-
put is interrupted to coast the motor to a stop. After the Stop Command is input, Run Commands are ignored
until the time T has elapsed. The time T depends upon the output frequency when the Stop Command is input
and the deceleration time.
Fig 6.19 Coast to Stop with Timer
îš‹ 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.
îš„Related Constants
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
b2-02
DC injection
braking cur-
rent
Sets the DC injection braking
current as a percentage of the
Inverter rated current.
The DC injection braking cur-
rent in flux control is affected by
any change to the setting of E2-
03.
0 to
100
50% No A A A No 18AH
b2-03
DC injection
braking time
at start
Used to set the time to perform
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 performed.
0.00
to
10.00
0.00 s No A A A A 18BH
Output
frequency
Run Command
ON ON ON
OFF OFF
Inverter output voltage interrupted
Operation wait time T
100% (Maximum output frequency)Minimum output frequency
Output frequency at
Stop Command input
Operation wait time T
Deceleration time
(e.g., C1-02)
Minimum baseblock
time (L2-03)
DC injection braking is used at startup for flux vector control
with the current set in E2-03 (Motor no-load current).
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