71
Figure 2.26 Description of Operation starting frequency
NO. Parameter Name Setting Range Default
f506 DC braking starting frequency
f508 DC braking time 0.0~20.0 s 1.0
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. During DC braking, a-07 displays.
DC braking can be activated by two methods as follows:
Automatically DC braking: when operation frequency decreases below f506, DC braking
is activated.
Input terminal signal: when the input terminal function 13 is ON, DC braking is activated.
Figure 2.27 DC braking sequence
Note1: During DC braking,
t
he overload protection sensitivity of the inverter increases.
The DC braking current may be adjusted automatically to prevent tripping.
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General