Application parameter group 10
PARAMETER DESCRIPTION 249
5.11.1 DC injection brake
When stopping the motor, apply DC voltage on motor to stop motor shaft from rotating, users can adjust the motor
stop time and braking torque.
Parameter
Name
Default Setting Range
Content
10-00
P.10
DC brake operating
frequency
3.00Hz
0～120.00Hz
---
10-01
P.11
DC brake operating
time
0.5s
0～60.0s
---
10-02
P.12
DC brake operating
voltage
4.0%
0～30.0%
7.5K/11KF and below
2.0%
11K/15KF～55K/75KF
1.0%
75K/90KF and above
DC brake
After sending stop signal (please refer to chapter 4 for basic operation of starting and stopping the motor), output
frequency of inverter will gradually decrease. When the output frequency decreases to “DC brake operation
frequency (10-00(
P.10
))”, DC brake will start to operate.
During DC braking, inverter will inject DC voltage into the motor coil to lock the
motor rotor. This voltage is called
“DC brake operating voltage (10-02(
P.12
))”. The larger the 10-02(
P.12
) value, the greater the DC braking voltage,
and the better the braking ability. However, the braking current will not exceed inverter rated current.
Operation of DC braking will maintain a period of time (10-01(
P.11
)
value) to overcome the inertia from motor
rotation.
See figure below:
Output
frequency
Time
Time
10-00
(P.10)
10-02
(P.12)
DC
braking
voltage
10-01
(P.11)
10-01
(P.11)
Note: 1. User must set appropriate values to get the best control characteristic.
2. If any one of 10-01(P.11) ,10-02(P.12) is set to “0”, DC brake will not operate, when send stop signal, motor
may still rotate due to inertia.
Setting
