High Function Parameters - Savch S900 Series User Manual

8. HIGH FUNCTION PARAMETERS

8-00 DC braking(Braking level)
Setting range
Description of parameter: This parameter sets DC braking level of motor at starting or stopping; braking capability
shall increase as DC braking percentage increases. However, pay attention that setting shall be increased gradually
enough torque appear. And great care shall be given that this braking percentage must be free from overlarge.
8-01 DC braking(Braking time at starting)
Setting range
This parameter is to set time lasting of DC braking voltage input to motor during start of AC motor drive.
8-02 DC braking(Braking time setting at stopping)
Setting range
This parameter is to set time lasting of DC braking voltage input to motor during braking. If DC braking is necessary
at stop, this function shall be available if Parameter 2-04 is set to deceleration and stop (d0).
8-03 DC braking(Braking starting frequency)
Setting range
This parameter is to set DC braking starting frequency from deceleration to stop of AC motor drive. When set value is
below starting frequency (1-05), starting frequency of DC braking shall begin from starting frequency.
Notice: If the parameter is set to be too high, over current (OC) alarm may occur.
Running frequency
Starting frequency
DC braking time at starting
Running reference
Techniques Forum:
DC braking before running is generally applied in circumstances which load can move when machine such as fan or
pumps stop. For these loads, prior to AC inverter start, motor is generally in free rotating, while direction is uncertain.
Prior to start, it is advisable to perform DC braking before starting motor. DC braking at stopping is generally used in
circumstances when motor is suggested to be braked quickly, or for control of location, such as traveling crane and
cutting machine.
d 0.0<->d 100%
d0.0<->d 60.0s
d0.0<->d 60.0s
d 0.1<->d 60.0Hz
1-05
8-01
ON
8-00 DC braking level
DC braking
starting frequency
8-03
OFF
60
Factory setting
Unit
Factory setting
Unit
Factory setting
Unit
Factory setting
Unit
Time
DC braking time at stopping
8-02
d 0.0
1%
d 0.0
0.1s
d 0.0
0.1s
d 1.0
0.1Hz