3: braking during starting
and stopping
Mfr’s value: 0
F601 Initial Frequency for DC Braking (Hz)
Setting range: 0.20~5.00
Mfr’s value: 1.00
F602 DC Braking efficiency before Starting
Setting range: 0~100
Mfr’s value: 10
F603 DC Braking efficiency During Stop
F604 Duration of Braking Before Starting (S)
Setting range: 0.0~30.0 Mfr’s value: 0.50
F605 Duration of Braking During Stopping (S)
When F600=0, DC braking function is invalid.
When F600=1, braking before
starting is valid. After the right
starting signal is input, inverter
starts DC braking. After braking is
finished, inverter will run from the
initial frequency.
In some applications, such as fan,
motor is running at a low speed or
in a reverse status, if inverter starts
immediately, OC malfunction will
occur. Adopting “braking before
starting” will ensure that the fan
stays in a static state before
starting to avoid this malfunction.
Figure 9-11 DC Braking
During braking before starting, if “stop” signal is given, inverter will stop by deceleration time.
When F600=2, DC braking during stopping is selected. After output frequency is lower than the
initial frequency for DC braking (F601), DC braking will stop the motor immediately
During the process of braking during stopping, if “start” signal is given, DC braking will be
finished and inverter will start.
If “stop” signal is given during the process of braking during stopping, inverter will have no
response and DC braking during stopping still goes on.
When jogging function is valid, the function of braking before starting set by F600 is valid, and
the function of speed track is invalid.
When jogging function is invalid and F613-1, the function of braking before starting is invalid.
Parameters related to “DC Braking”: F601, F602, F603, F604, F605 and F606, interpreted as
follows: