Veichi JT550 Series Manual page 103

JT550 Series Inverter Manual
F7.05 Startup DC braking current
F7.06 Startup DC braking time
Startup DC braking is generally used during restart of the inverter after the rotating motor stops.Startup
DC braking is valid only for direct start (F7.00 = 0). In this case, the inverter performs DC braking at the set
startup DC braking current. After the startup DC braking time, the inverter starts to run. If the startup DC
braking time is 0, the inverter starts directly without DC braking.
F7.07 Acceleration/Deceleration mode
It is used to set the frequency change mode during the inverter start and stop process.
0: Linear acceleration/deceleration
1: S-curve acceleration/deceleration A
2: S-curve acceleration/deceleration B
Time proportion of S-curve start
F7.08
Time proportion of S-curve end
F7.09
These two parameters respectively define the time proportions of the start segment and the end
segment of S-curve acceleration/deceleration. They must satisfy the requirement: F7.08 + F7.09 ≤ 100.0%.
F7.10
0: Decelerate to stop
After the stop command is enabled, the inverter decreases the output frequency according to the
deceleration time and stops when the frequency decreases to zero.
1: Coast to stop
After the stop command is enabled, the inverter immediately stops the output. The motor will coast to
stop based on the mechanical inertia.
F7.11 Initial frequency of stop DC braking
F7.12 Waiting time of stop DC braking
F7.13 Stop DC braking current
F7.14
The inverter starts DC injection braking when the running frequency decreases to the value set in this
parameter in the process of deceleration to stop.
F7.15
It is valid only for the inverter with internal braking unit and used to adjust the duty ratio of the
braking unit. The larger the value of this parameter is, the better the braking result will be. However, too
larger value causes great fluctuation of the inverter bus voltage during the braking process.
segment
segment
Stop mode
Stop DC braking time
Brake use ratio
0%~100%
0.0s~100.0s
Range:0~2
Range:0.0%~
（100.0%-F7.09）
Range:0.0%~
（100.0%-F7.08）
Range:0~1
Range:0.00Hz~max. freq
Range:0.0s~100.0s
Range:0%~100%
Range:0.0%~100.0%
Range:0%~100%
- 103 -
Chapter 7 Maintenance and Troubleshooting
0%
0.0s
Default:0
Default:30.0%
Default:30.0%
Default:0
Default:0.00Hz
Default:0.0s
Default:0%
Default:0.0s
Default:100%