E6582175
F-47
6
6.12 DC braking
6.12.1 DC braking
f249
: PWM carrier frequency during DC braking
f250
: DC braking starting frequency
f251
: DC braking current
f252
: DC braking time
Function
A large braking torque can be obtained by applying a direct current to the motor. These parameters
set the direct current to be applied to the motor, the application time and the starting frequency.
[Parameter setting]
Title
Function
Adjustment range
Default setting
f249
PWM carrier frequency during DC braking
2.0-16.0 (kHz)
4.0
f250
DC braking starting frequency
0.0-
fh
(Hz)
0.0
f251
DC braking current
0.0-100 (%) / (A)
50
f252
DC braking time
0.0- 25.5 (s)
1.0
Time [s]
DC braking starting frequency
DC braking current
DC braking time
Output frequency [Hz]
DC braking
Operation signal (F-CC)
ON
OFF
Output current [A]
0
0
Set frequency
Note1: During DC braking, the overload protection sensitivity of the inverter increases. The DC braking
current may be adjusted automatically to prevent tripping.
Note 2: During DC braking, the carrier frequency becomes the setting of whichever is lower parameter
f249
or
f300
.
Note 3: DC breaking can be done by using the signal at an input terminal. Input terminal 22: Assign DC
braking command (23 is reverse). DC braking is applied while the terminal is ON regardless of the
f250
,
f252
settings. Even if the terminal is OFF, DC braking is applied only for the
f252
time. The amount of DC braking depends on the
f251
settings.
Содержание TOSVERT VF-S15 series
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