The User Manual of JAC200 Series General Frequency Converter
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Set range
0.0s
～
100.0s
Initial frequency of stop DC braking: The DC braking process shall start when the operation frequency is
reduced to this frequency during deceleration stop.
Waiting time of stop DC braking: After the operation frequency is reduced to initial frequency of stop DC
braking, the frequency converter shall stop output for a period and then the DC braking process shall start.
Through this, the failures such as over-current due to the DC braking at a
relatively high speed shall be
avoided.
Stop DC braking current: There are two situations for the relative base value of stop DC braking current.
1. The relative base value is the percentage base value relative to rated current of motor when the rated
current of motor is less than or equal to 80% of the rated current of the frequency converter.
2. The relative base value is the percentage base value relative to 80% of the rated current of the frequency
converter when the rated current of motor is greater than 80% of the rated current of the frequency
converter.
Stop DC braking time: Retention time of DC restraint quantity. The DC braking process shall be canceled
when the value is equal to 0.
The stop DC braking process is shown in Fig. 6-13 diagram.
Fig. 6-13 Stop DC braking diagram
F6-15
Use rate of braking
Default value
100%
Set range
0%
～
100%
It is only applicable to the frequency converter of built-in braking unit.
It is used to adjust the duty cycle of braking unit. If the use rate of braking is high, the braking unit shall
have a high duty cycle and good braking effect, but the bus voltage of the frequency converter shall
fluctuate largely.
